A legal system is relatively nominalist, on one understanding of this term, to the extent that its rules depend to a lesser degree than they might otherwise on facts of the matter, that is, on facts not produced by the legal system itself. In an earlier article centered on a story in the Babylonian Talmud (B. Sanhedrin 5a–b) about Rav and the herders, I argued that one impetus toward nominalism comes from the desire to disentangle law from complicated bodies of technical fact.Footnote 1 According to the story, Rabbi Judah the Patriarch denied Rav license to “permit” firstborn animals, that is, to determine that their blemishes are severe enough to render the animals profane. The stam insists that the patriarch's denial did not stem from any lack of familiarity on Rav's part with animal anatomy. Rav had in fact devoted eighteen months to studying the subject with herders. The problem, on the contrary, was that Rav had become too expert. Because the logic of his decisions would remain opaque to other licensed but less knowledgeable experts, and hence sow confusion, the patriarch excluded him from the circle of licensed experts. On the stam's explanation, the rabbinic law of permitting firstborns becomes nominalist by settling for, and indeed insisting upon, knowledge of animal anatomy that is less detailed than the knowledge of the professional herder.Footnote 2 Nominalism emerges, on this analysis, as the result, at least in part, of a problem in the sociology of knowledge.
The same article provides the framework for a broader inquiry into the relationship between rabbis and other professionals or quasi-professionals, or between rabbinic knowledge and bodies of technical knowledge that are analytically independent from rabbinic Halakhah, but to which Halakhah “speaks.”Footnote 3 This essay will consider the relationship between agricultural law and agricultural science, or, more loosely, between rabbis and farmers. Rabbinic texts speak of specialized agricultural tasks, and of an “expert farmer” (איכר אומן).Footnote 4 But do they recognize a corresponding body of technical farming knowledge that bears on agricultural law? If so, how do they treat it? Is there any evidence of a desire to disentangle agricultural law from agricultural fact, or, in other words, to construct agricultural law in nominalist terms?
Greco-Roman Background
The status of agriculture as a subject is a question that Greek and Roman writers debated across many centuries. In Xenophon's Oeconomicus, of the early fourth century bce, Isomachus manages to persuade Socrates that “farming is not troublesome to learn, like other arts (τέχνας), which the pupil must study till he is worn out before he can earn his keep by his work. Some things you can understand by watching men at work, others by just being told, well enough to teach another if you wish” (15.10).Footnote 5 Because one can pick up sufficient agricultural knowledge incidentally, through observation and casual inquiry, the qualities that ultimately separate the good farmer from the bad are care and diligence, not knowledge. “[T]he slothful cannot plead ignorance, as in other arts: land, as all men know, responds to good treatment. Husbandry is the clear accuser of the recreant soul” (20.14–15).
Antonius, a character in Cicero's first-century BCE dialogue, On the Orator, takes his cue from Xenophon's Isomachus. In arguing against Crassus that the art of the orator does not demand detailed study of the common law, Antonius compares rhetoric to agriculture.
For it is one thing to be a craftsman in a specific subject and art, and another to be no dullard or raw hand in social life and the general practices of mankind. Which of us may not survey his estate or go to see his rural concerns, whether in quest of profit or of amusement? Yet no one passes his days so bereft of sight and sense as to be wholly ignorant of the nature of sowing and reaping, or of lopping of trees and pruning of vines, or of the times of year for doing these things, or of how they are done. If then some one of us has occasion to look over his estate, or give some commission to his agent, or order to his bailiff, on details of husbandry, need he get by heart the volumes of Mago of Carthage? Or may we be satisfied with our own mother-wit? (1.58.248–49)
Antonius appears to accept that there is a technical science of agriculture, of the sort elucidated in Mago's treatise, which was translated from Punic into Latin with the sponsorship of the Roman Senate.Footnote 6 But Antonius denies that expert agricultural knowledge is relevant for estate management in the ordinary course of things.Footnote 7
Varro, a contemporary of Cicero, appears to respond to Antonius's position in his dialogue, On Agriculture, also from the first century BCE.Footnote 8 A character named Agrasius poses the question “whether the knowledge (scientia) of those things used in agriculture is an art (ars) or not” (1.3).Footnote 9 Scrofa, “who is esteemed the Roman most skilled (peritissimus) in agriculture” (1.2.10), responds: “[I]t is not only an art but an important and noble art. It is, as well, a science (scientia), which teaches what crops are to be planted in each kind of soil, and what operations are to be carried on, in order that the land may regularly produce the largest crops” (1.3). For Scrofa, the profitable farmer is one well versed in agricultural science. Two generations after Varro, Columella, at the beginning of his technical treatise On Agriculture, takes vigorous issue with “the common notion … that farming is … a business which has no need of direction or precept.” He, on the contrary, marvels at the subject's magnitude, “like the immensity of some great body,” and at “the minuteness of its several parts” (1.preface.21). Both Varro (through the mouths of his characters) and Columella recommend attentiveness to the agricultural wisdom of ancient and contemporary farmers, as well as personal experimentation.Footnote 10 Among those who recognize an agricultural science we may also count the Jewish philosopher-exegete Philo, who, in his On Husbandry, distinguishes between Noah the “husbandman” (γεωργὸς) and Cain the “worker of the ground.”Footnote 11 The latter is Xenophon's farmer, who merely expends effort, and “carries very heavy loads” (21). The former, by contrast, is proficient in the science of husbandry (τῆς γεωργικῆς τέχνης), not an “unprofessional” (ἰδιώτης, rabbinic Hebrew הדיוט) but a “skilled worker” (ἔμπειρος, the equivalent of the rabbinic אומן) (4).Footnote 12
Agriculture emerges in these sources as a contested area: the common knowledge of a farming society, for some, but for others, a technical science. In the sections that follow we turn to the rabbinic literature of Roman Palestine (especially the Mishnah, the Tosefta, and the Yerushalmi) for evidence of rabbinic views on agriculture and, most importantly, on the extent to which agricultural Halakhah depends on technical agricultural knowledge. In view of the wide scope of the relevant corpus—an entire order of the Mishnah is dedicated to laws bearing on agriculture, and discussions that implicate agriculture also occur throughout the other five orders of the Mishnah, and in related texts—and of the fact that the corpus only addresses these questions incidentally, the aim here is not to provide exhaustive answers, but to collect and explicate the most relevant texts and patterns.
“Like an Expert Sharecropper”
At the beginning of the fifth chapter of tractate Shevi‘it (Y. Shevi‘it 5:1 [35d]) the Yerushalmi probes the “one third” standard, that is, the rule that the fruits of a tree that have reached one third of their growth before the New Year belong to the previous year's crop for the purpose of tithing. The passage of immediate interest to us addresses the standard's apparent imprecision.
ר' בון בר חייא בעא קומי ר' זעירא מעתה שליש הראשון לשעבר ושליש השיני לבא אמ' ליה שליש הראשון קשה לבוא מכיון שהוא בא מיד הוא גדל אמ' ר' בא ב(!)אריס אומן ילף לה ר' זעירא שמואל אמ' שיתין יומין שו(!)תה עליי שיתא יומין שיתין עליי
R. Bun b. Ḥiyya asked before R. Zeira: On this basis, the first third should count for the previous one, and the second third for the coming one? He said to him: The first third comes with difficulty. Once it comes, it grows immediately. Said R. Ba: R. Zeira learned it like an expert sharecropper. Samuel said: Sixty days, six leaves; six days, sixty leaves.Footnote 13
R. Bun would have the year for tithing correspond precisely to growth. If the fruit completes one third of its growth by the New Year, then that one third should be tithed according to the previous year, while the other two thirds should be tithed according to the following year. R. Zeira offers a scientific defense of the one-third standard. The final two thirds of the fruit's growth are, as it were, contained in the first third, because it is in the first third of its growth that the fruit expends effort, while the final two thirds follow easily afterward. R. Zeira's claim is presumably connected to the view, which he himself assumes in a statement cited numerous times in the Yerushalmi, that the seed of a fruit that has attained one third of its growth is viable.Footnote 14 Samuel's statement confirms that the initial growth is the slowest.Footnote 15
What does R. Ba mean when he observes that R. Zeira has responded like an expert sharecropper? Is his tone condescending? Complimentary? Neutral?Footnote 16 It is worth noting that R. Zeira may well have been a sharecropper, or something like it. The Yerushalmi (Y. Bava Meẓi‘a 4:12 [9d]) reports that he worked in flax (עסק בהדא כיתנא). R. Zeira tells elsewhere (Y. Berakhot 1:1 [2d]) that he was conscripted into agricultural labor, which was often the fate of small landholders in the vicinity of imperial estates, who were given cultivation rights with the understanding that they would, in exchange, contribute their labor to those estates.Footnote 17 Be that as it may, R. Ba speaks directly not to R. Zeira's occupation, but to the social location of the information that he has invoked. R. Zeira answers R. Bun's question less as a rabbi than as a farmer well versed in agricultural science. R. Ba's statement acknowledges a difference between halakhic discourse (unmarked) and specialized farming discourse (marked).
The construction of agriculture as a distinct body of knowledge also emerges implicitly from a formula that occurs almost exclusively in the Tosefta and the Yerushalmi, and generally—in the Yerushalmi almost always—with reference to agriculture. After stating a law that implicates a finding of fact, the anonymous voice asks: How does one know (יודע), or, how does one determine (בודק)?Footnote 18 The following example is typical. The Mishnah (M. ‘Orlah 1:5) cites the anonymous view that in the case of a shoot of a vine that has been directed into the soil, so that it grows its own roots, the shoot does not have the status of an independent plant, and hence is not subject to the law of the “foreskin” (ערלה), which prohibits consumption of the fruit of a plant for three years after its planting. R. Meir contends that the shoot is only exempt if the shoot has been planted in poor soil. In the Yerushalmi (Y. ‘Orlah 1:5 [61a]), R. Abbahu, in the name of R. Yoḥanan and R. Ḥisda, contends that the debate between the anonymous view and R. Meir occurs only when one does not know whether the shoot is nourished (chiefly) from itself (“the youngling”) or from the vine (“the elder”), for if it is certain that the shoot is nourished from itself, all agree that it constitutes a new plant, and if from the elder, then all agree that it does not constitute a new plant. The Yerushalmi probes this position. How can one know the source of the shoot's nutrition? And if it is possible to know, then how can the situation of ignorance—the only situation subject to the debate in the Mishnah, according to R. Abbahu—ever arise?
כיצד הוא יודע ר' ביבי בשם ר' חנינה אם היו העלים הפוכין כלפי הילדה דבר בריא שהוא חי מכח הזקנה ואם היו העלים הפוכין כלפי הזקנה דבר בריא שהוא חי מכח הילדה אמר ר' יודן בר חנין סימנא דאכל מן חבריה בהית מסתכלא ביה אמר ר' יודן אבוי דר' מתנייה תיפתר שנשרו העלין
How does one know? R. Bibi in the name of R. Ḥaninah: If the leaves are turned toward the youngling, it is certain that it lives from the strength of the elder.Footnote 19 And if the leaves are turned toward the elder, it is certain that it lives from the strength of the youngling. Said R. Yudan b. Ḥanin: The mnemonic is, one who eats from his friend is embarrassed to look at him. Said R. Yudan father of R. Metanya: Resolve it as being when the leaves have fallen.
R. Bibi reports that one can use the orientation of the leaves on the youngling as an indicator of the source of its nutrition, for the leaves consistently point away from the source. What, then, is the case of uncertainty, where the Mishnah's debate arises? When there are no leaves.
This short sugya can be read as a kind of turn and counterturn around the problem of rabbinic law and technical fact. R. Abbahu's statement confines the debate in the Mishnah to the case of uncertainty, and thus relieves the law of the need to make a factual determination. It is precisely where no factual determination can be made that the law speaks. Relegation of the law to the case of uncertainty is a common move in rabbinic dialectic, but the exchange in the continuation of the sugya—the “how does one know” question and its aftermath—exposes this move as a strategic way of aligning law with the question of fact without directly engaging that question in any real detail. In this case, the sugya powers beyond this point, to delve precisely into the factual question. The existence of fixed formulae—“how does one know/determine?”—for such turns to (chiefly agricultural) fact marks them off as a distinct form of inquiry, which we may with good reason call that of the “expert sharecropper.”
The Minimum Vineyard
The Mishnah's overview of the laws of “mingled species of the vineyard” (כלאי הכרם) in tractate Kil'ayim (chapters 4–7) is almost wholly occupied with the question of whether a given formation of vines constitutes a vineyard. If it does, then the prohibition against planting another species holds for the entire area, and four cubits beyond it. If it does not, then the prohibition applies only to the six handbreadths around each vine. There is evidence that these vineyard formations, and the dimensions ascribed to them, served as the paradigm cases of linear measurement for early rabbinic authorities.Footnote 20
The foundational measurement is that of the minimum vineyard. According to M. Kil'ayim 4:6, the smallest vineyard is one that consists of two vines aligned across from two vines, with a third “protruding as a tail” (יוצא זנב). If, according to the anonymous view in M. Kil'ayim 5:1, the vines are planted in a jumble, rather than in rows, they constitute a vineyard only if it is possible to discern an arrangement of two opposite three. Contemporary Roman writers also recommend planting vines in units of five, but in their case, the five vines take the form of a quincunx, with two vines in opposite rows, and the fifth in between the two pairs, equidistant from all four vines. According to Varro's Scrofa, the quincunx is an innovation. “Our ancestors, on the same amount of land but not so well laid out, made less wine and grain than we do, and of a poorer quality” (1.7.2).Footnote 21 The Mishnah (M. Kil'ayim 4:6) is familiar with the quincunx arrangement, but denies it the status of a vineyard. Whether we are to see in this denial a traditionalist or a nativist or an anti-Roman sentiment is uncertain, but, as we will later observe, rabbis do recognize a link between their planting practices and their native soil.Footnote 22
Two pericopes, one in the Tosefta and one in the Yerushalmi, concern the rabbinic definition of the vineyard, and offer insight into the question of technical agricultural knowledge and its relationship to rabbinic agricultural law. The Tosefta (T. Kil'ayim 3:5) reports that the case of the jumbled vineyard came before R. Gamaliel. He instructs his interlocutors to go and ask a certain Yose b. Giali (Golai, according to the editio princeps), whom he characterizes as “one most well versed” (בר ובקי) in “the laws of the vineyard” (הלכות הכרם).Footnote 23 Yose provides the answer enshrined anonymously in M. Kil'ayim 5:1: If it is possible to discern an arrangement of four vines in two rows, plus a tail, then it is a vineyard.
Why does R. Gamaliel not know the law? Why is it known to Yose b. Giali? Is R. Gamaliel's ignorance connected with the fact that, as a large landholder who leased his estate to sharecroppers, he was less than familiar with matters pertaining to vineyards, and especially small ones?Footnote 24 Virtually nothing is known of Yose b. Giali outside of this source.Footnote 25 Nor can we be sure of the nature of the expertise attributed to him here. I have rendered the phrase הלכות הכרם as “the laws of the vineyard,” but in fact, outside of this case, the word הלכה occurs in tractate Kil'ayim (Mishnah and Tosefta) only in the phrase: “[a vine formation] planted in accord with its הלכה,” that is, its way (M. Kil'ayim 5:1; T. Kil'ayim 3:5–6). Thus, what Yose knows may be characterized less as law than as fact, and in particular, the conventions of viticulture. But just as the term הלכה itself spans is and ought, so Yose's knowledge bears directly on legal questions.Footnote 26
A set of three interrelated stories that also involve ignorance about matters connected to the laws of mingled species of the vineyard sheds some additional light on the varying levels of expertise in this body of law within rabbinic circles. One of the three stories, which occurs in the Bavli (B. ‘Eruvin 11b), makes explicit reference to such expertise.
הלך ר' יהושע אצל ר' יוחנן בן נורי ללמדו תורה אע"פ שבקי בהלכות כלאים ומצאו שיושב בין אילנות ומתח זמורה בין אילן לאילן ואמ' לו איבעא גפני' כאן מהו לזרוע אמ' לו בעשר מותר ביותר מעשר אסור
R. Joshua went to R. Yoḥanan b. Nuri that he might teach him Torah, even though he was well versed in the laws of mingled species. And he found him sitting among trees. And he extended a vine shoot from tree to tree and he said to him: If vines were here, could one seed [another species] there? He said to him: If the distance is ten, it is permissible, but if more than ten, it is forbidden.Footnote 27
The halakhic question is whether “the form of a doorframe” (צורת הפתח) constitutes a partition, whether for the Sabbath, so as to demarcate a property as private, or, in particular here, for the laws of mingled species, so as to allow one to plant vines on one side and another species on the other without leaving any additional space. In the above story, attributed to R. Yoḥanan, R. Joshua asks R. Yoḥanan b. Nuri about the status of a vine shoot stretched across two trees, so as to form the shape of a doorframe. R. Yoḥanan b. Nuri counts this quasi-doorframe as a partition, so long as the distance between the two trees is ten cubits or less.
What appears to be a different version of the same story occurs in the parallel sugya in the Yerushalmi (Y. ‘Eruvin 1:9 [19c] = Y. Kil'ayim 4:4 [29b] = Y. Sukkah 1:1 [52a]), again in the name of R. Yoḥanan.
מעשה שהלך ר' יהושע בן קרחה אצל ר' יוחנן בן נורי לנגנגד והראהו שדה אחת ובית חבירתה היתה נקראת והיו שם פרצות יותר מעשר והיה נוטל אעים וסותם דוקרנין וסותם עד שמיעטן פחות מעשר אמ' כזו כן מחיצת שבת
A story: R. Joshua b. Korḥah went to R. Yoḥanan b. Nuri to Ginegar, and he showed him a field that was called the white house (?), and there were breaches there larger than ten. And he took planks and sealed it, pitchforks and sealed it, until he had reduced them to less than ten. He said: Like this, so is the partition for the Sabbath.Footnote 28
While the traveler in the Bavli's version, R. Joshua, is presumptively R. Joshua b. Ḥananiah, the R. Joshua in the Yerushalmi's version is R. Joshua b. Korḥah. The details of the two rabbis’ interactions also vary.
A traditional commentator on the Yerushalmi, Ber Ratner ('Ahavat Ẓiyon ve-Yerushalayim, on Y. Kil'ayim 4:4) speaks for many when he argues in favor of the Yerushalmi's originality. “The version [in the Bavli] is puzzling, for R. Joshua b. Ḥananiah would not go to R. Yoḥanan b. Nuri.” It is more natural, on this view, that R. Joshua b. Korḥah, a third-generation Tanna, rather than R. Joshua b. Ḥananiah, an early second-generation Tanna, should have traveled to receive instruction from R. Yoḥanan b. Nuri, a late second-generation Tanna. But this view, even if correct, furnishes no grounds for emending the Bavli (against almost all witnesses) so that it, too, features R. Joshua b. Korḥah. On the contrary, the Bavli's apologetic qualifier, “even though he was well versed in the law of mingled species,” should be taken as evidence that the Bavli indeed takes its R. Joshua to be R. Joshua b. Ḥananiah. It is precisely because R. Joshua should not, in the Bavli's view, be going to his junior colleague for instruction in the laws of mingled species that the Bavli deems it necessary to insist on R. Joshua's competence in the area.
Moreover, the consideration that Ratner raises is far from dispositive. One tannaitic source (T. Ta‘anit 2:5) imagines R. Joshua (b. Ḥananiah) conceding to R. Yoḥanan b. Nuri in a debate. Even more pertinently, M. Kil'ayim 6:4 (paralleled in T. Kil'ayim 4:7) tells of R. Joshua (b. Ḥananiah) visiting another late second-generation Tanna, R. Ishmael, and engaging him, in the field, in a conversation about the laws of mingled species.
מעשה שהלך ר' יהושע אצל ר' ישמעא' לכפר עזיז והראהו גפן שהיא מודלה על מיקצת תאינה אמ' לו מה אני להביא זרע תחת המותר אמ' לו מותר והעלהו משם לבית המגנייא והראהו גפן שהוא מודלה על מקצת הקורא בתוך סדן שלשיקמה ובו קורות הרבה אמ' לו תחת הקורא זו אסור והשאר מותר
A story: R. Joshua went to R. Ishmael in Kefar Aziz, and he showed him a vine trained over part of a fig tree. He said to him: May I introduce seeds under the remainder [of the fig tree]? He said to him: It is permitted. He brought him from there to the house of Maganya and showed him a vine trained on part of a branching in the trunk of a sycamore, and in [the trunk] were many branchings. He said to him: Under this branching is forbidden, and the remainder is permissible.Footnote 29
It is not certain who asks whom in this exchange. In another exchange between R. Ishmael and R. Joshua (M. ‘Avodah Zarah 2:5), the two rabbis come off more or less as equals. Whichever way the conversation is construed, but especially if R. Joshua asks the questions, the story offers further evidence that R. Joshua b. Ḥananiah's seniority does not, in itself, compel us to identify R. Yoḥanan b. Nuri's visitor as R. Joshua b. Korḥah rather than R. Joshua b. Ḥananiah.Footnote 30
If the Bavli's story indeed represents a secondary version of the Yerushalmi's, the shift from R. Joshua b. Korḥah to R. Joshua (b. Ḥananiah), along with other details that distinguish it from the Yerushalmi's version (a question about the planting of “seeds”; the extending of a vine over a tree; a concluding statement distinguishing between the permissible and the forbidden), may have been influenced by the story of R. Joshua and R. Ishmael in M. Kil'ayim 6:4.Footnote 31 However we construe the relationship between the three stories, the Bavli's apology for R. Joshua—“even though he was well versed in the laws of mingled species”—is specific to the Bavli, and, as we have noted, likely reflects its own anxiety about the possibility of rabbinic ignorance, or perhaps, about the possibility that a junior colleague might know more than a senior one.Footnote 32
Together, the three stories reinforce the notion that some rabbis were more conversant in the laws of mingled species than others, but, at least in the two stories in Palestinian sources, relative ignorance is not a matter of anxiety. The stories also highlight a different dimension of the laws of mingled species that bears on our inquiry, namely, their visual character. In both the Mishnah and the Yerushalmi, the halakhic analysis originates in situ, in the act of pointing out (הראה) a feature of a vineyard or field. Laws that implicate complex visual details are often precisely those in which questions of expertise, and of the structuring of rabbinic knowledge vis-à-vis that of other professions, arise. Thus halakhic texts speak, for example, of “appearances of afflictions” (מראות נגעים; M. Nega‘im 1:1) and “seeing (i.e., diagnosing) afflictions” (רואין את הנגעים; T. Mo‘ed Katan 1:8); of and “showing” a firstborn animal to an expert in animal blemishes (הראהו למומחה; T. Bekhorot 3:2).Footnote 33 In the above stories, the laws of mingled species take their place, if a peripheral one, among these other, intensely visual bodies of law.Footnote 34
The second datum on the minimum vineyard that bears on our inquiry occurs in the Yerushalmi's commentary (Y. Kil'ayim 4:6 [29c]) on M. Kil'ayim 4:6, which specifies the number and arrangement of the vines in such a vineyard. The commentary on the Mishnah pericope begins with the following exchange.
ר' חייה בר בא בשם ר' חייא בר יוסף ארץ כנען לגבולותיה גבולות שבדו להם הכנעניים ר' אימי בעי ולמידין מן הכנעניים
R. Ḥiyya b. Ba in the name of R. Ḥiyya b. Yosef: “The land of Canaan according to its boundaries” [Numbers 34:2]. The boundaries that the Canaanites conceived. R. Immi asked: And do we learn from the Canaanites?
It is far from obvious that the quoted exegesis of Numbers 34:2, taken by itself, means to provide a basis for the Mishnah's definition of the minimum vineyard. We will return to this issue below. For now let us note that R. Immi's challenge takes the exegesis as an attempt to ground some sort of conclusion, probably the one in the Mishnah. This challenge is followed, in the Yerushalmi, by two statements about the minimum vineyard. While traditional commentaries (e.g., the Penei Moshe) suppose that these statements respond to and acknowledge R. Immi's challenge by offering different arguments for the logic of the minimum vineyard, it is possible that the statements are not intended as responses to R. Immi, but address a different question.Footnote 35
Another version of R. Ḥiyya b. Ba's teaching occurs in the Bavli (B. Shabbat 85a). The Mishnah pericope to which it attaches, M. Shabbat 9:2, offers a prooftext for a notion conveyed in M. Kil'ayim 3:1, that one can plant seeds of five distinct species in a bed that measures six handbreadths by six handbreadths in such a way that the seeds do not draw nourishment from each other, so that one does not run afoul of the laws of mingled species. The Bavli assumes that the prooftext by itself is insufficient. How, it asks, can the rabbis ultimately be sure that five seeds planted in such an arrangement do not intermingle?
דא”ר חייא בר אבא א“ר יוחנן לא תשיג גבול רעך אשר גבלו ראשונים גבו' שגבלו ראשונים לא תשיג ומאי גבול גבלו ראשונים א“ר שמואל בר נחמני א”ר יונתן אלה בני שעיר החרי יושבי הארץ אטו כליה (!) עלמא יושבי רקיע נינהו אלא שהיו בקיאי' בישיבה של ארץ [ישר'] שהיו או' מלא קנה זה לגפן מלא קנה זה לתאנה וחורי שמריחין את הארץ וחוי שהיו טועמין את הארץ כחיווי
For R. Ḥiyya b. Abba said in the name of R. Yoḥanan:Footnote 36 “You shall not move aside your countryman's boundaries, which the first ones bounded” [Deuteronomy 19:14]. The boundary that the first one bounded, do not move aside. And what is the boundary that the first ones bounded? Said R. Samuel b. Naḥmani in the name of R. Jonathan: “These are the children of Seir, the Horite, inhabitants of the land” [Genesis 36:20].” And are all others inhabitants of the firmament? Rather, they were expert in making the land habitable,Footnote 37 for they would say: The full length of this rod is [suitable] for vines, the full length of this rod is [suitable] for figs.Footnote 38 And “Horite” [ibid.]: that they would sniff the earth. And “Hivite” [Genesis 36:2]Footnote 39: that they would taste the earth like a snake.Footnote 40
In the Bavli passage, as in the Yerushalmi, the author of the statement about the boundary makers is R. Ḥiyya b. Ba. The second comment, which is introduced to elucidate the first, is also attributed to Palestinian Amoraim, R. Samuel b. Naḥmani and R. Jonathan.
The two versions of R. Ḥiyya b. Ba's teaching are attached to different aspects of the law of mingled species: in the Yerushalmi, to the law of minimum vineyard, and in the Bavli, to the law of five seeds in a bed. Is it possible to ascertain which context, if either, is original? Both versions depend on the word גבול (boundary). But only a bed is said, in rabbinic literature (M. Kil'ayim 3:1–2; B. Shabbat 85a), to be surrounded by a גבול. A vineyard is surrounded instead by a fence (גדר; e.g., M. Kil'ayim 4:2) or partition (מחיצה; e.g., T. Kil'ayim 3:2). If, then, we are to suppose a common origin for the two versions, then the more original context is more likely the bed.
Most likely the teaching was not originally offered in the context of the law of mingled species at all, and did not speak originally to the Canaanites' purported agricultural expertise. Rather, it constructs the Canaanites as surveyors, who established and marked the boundaries of the land that Israel would later conquer.Footnote 41 A likely tannaitic comment on Deuteronomy 19:14—the verse to which R. Ḥiyya b. Ba's teaching also attaches, in the Bavli—distinguishes between the boundaries that Joshua established, probably the tribal allotments within the land of Canaan, and those that the Canaanites established, probably the boundaries of the land of Canaan itself.Footnote 42 Against this background, the Yerushalmi's version of the tradition conveyed by R. Ḥiyya b. Ba can be understood as meaning to clarify that Numbers 34:2 introduces the external boundaries of the land, not its internal divisions.Footnote 43 On this reconstruction, the sugyot in their present form attest to the secondary transfer of R. Ḥiyya b. Ba's tradition from the realm of surveying to the planting of vineyards and the science of root nourishment.Footnote 44
The use of the word בדו in the Yerushalmi's version appears to strike a discordant note, for the root בד“י ordinarily conveys not simply invention but fabrication, or falsehood. It is possible, in immediate terms, that בדו is conditioned by the verse. The exegesis would depend on reading Biblical Hebrew גבול in light of Aramaic and Hebrew גב”ל “to make, form.”Footnote 45 More generally, the cultural framework implicit in R. Ḥiyya b. Ba's use of בדו is probably that of technological innovation, instances of which we have already encountered in connection with the quincunx and with the validation of experimentation in Varro and Columella.Footnote 46
The expertise that R. Samuel b. Naḥmani's statement attributes to the Horites—the ability to discern which soil is suitable for which crop—is of foundational importance in Greco-Roman agricultural writing. According to Xenophon's Isomachus (16.1), “the nature of the soil,” that is, “what the soil is capable of growing,” is what authors on agriculture call “the most complicated problem in agriculture,” and the “first” thing a farmer must know. In the definition of agricultural science proffered by Varro's Scrofa, reproduced at the very beginning of this article, the determination of the crop suitable for each soil likewise has pride of place.Footnote 47
It is tempting to see in the attribution of agricultural expertise to Canaanites an echo of the esteem for Carthaginian agricultural science in Roman literature. We have already made reference to the Carthaginian Mago's monumental treatise on the subject, deemed of such great importance that the Roman Senate sponsored its translation into Latin. The offhand way in which Varro's Antonius refers to it in the remark quoted above suggests that the name “Mago of Carthage” had achieved a cultural resonance beyond the province of technical writers on agriculture.Footnote 48 The fact that Columella not only makes use of Mago's treatise, but also cites a maxim about farm size in the name of “the Carthaginians, a very shrewd people” (1.3.9), is further evidence of the association of the Carthaginians with agricultural expertise. Rabbinic sources manifest a very explicit awareness of the connection between the ancient Canaanites and contemporary Phoenician colonies in North Africa, including Carthage.Footnote 49 Their construction of the Canaanites of old as expert farmers may build on this connection.
But it is more likely that the statements in the Yerushalmi and the Bavli simply develop the intuitive link between autochthony and agriculture. The Pentateuch itself, in a passage (Deuteronomy 6:11) on which various rabbinic interpreters dwell, speaks of the Israelites entering into a land already cultivated, with vineyards and olive trees.Footnote 50 A passage from the Mishnah (M. ‘Orlah 1:2) considers the legal status of plants that “our fathers” (אבותינו) found when they came to Canaan.Footnote 51 The talmudic sources analyzed above likewise presume agricultural continuity between Jews in Israel and their Canaanite predecessors.Footnote 52
The construction of agriculture as a Canaanite expertise recollects the category of “the ways of the Amorites” (דרכי האמורי), which likewise associates a particular set of practices, in this case superstitious or magical ones, with pre-Israelite inhabitants of the land. The close connection between superstition or magic and agriculture in the rabbinic worldview emerges from, inter alia, the fact that the paradigmatic instance of witchcraft for the Mishnah (M. Sanhedrin 7:11) is the magical harvesting of cucumbers.Footnote 53 Most strikingly, for our purposes, Canaanite agriculture and “the ways of the Amorites” occur, respectively, in the Akivan and Ishmaelian comments on the biblical prohibition (Leviticus 18:3) against “walking in the laws” of the Egyptians and the Canaanites. The Akivan comment excepts building and planting from this prohibition, while the Ishmaelian comment finds in the verse the source of the ban on “the ways of the Amorites.”Footnote 54 The sources that we have analyzed replicate the distinction that emerges from a comparison between the two schools' approaches by upholding Canaanite agricultural expertise as authoritative, despite the fact that the same Canaanites are recognized elsewhere as experts in another, not unrelated area of illicit superstition.
Conclusion
In rabbinic circles in Palestine, some rabbis were considered more knowledgeable than others in certain agricultural laws. On one occasion, a rabbi appears to defer to an individual who may not be a rabbi (Yose b. Giali), but there is no evidence for a general practice of the sort. Rabbinic sources do betray an awareness of technical agricultural facts as a distinct body of knowledge that bears on Halakhah. This body of knowledge is marked out by a formula, “how does one know/determine.” It is constructed as the province of the “expert sharecropper,” and of the ancient Canaanites. But the existence of such a body of knowledge does not appear to be a source of overt anxiety to rabbis of tannaitic and amoraic Palestine. They do not overtly recognize it as a problem for rabbinic authority, nor do they, in evident ways, construct agricultural Halakhah so as to make it less dependent on technical agricultural facts, or in other words, more nominalist.