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Light Period, Temperature, and Kochia Flowering

Published online by Cambridge University Press:  12 June 2017

Allyn R. Bell ,
John D. Nalewaja  and
A. B. Schooler
Allyn R. Bell
Affiliation:
Dep. of Agron., North Dakota State Univ., Fargo, North Dakota 58102
John D. Nalewaja
Affiliation:
Dep. of Agron., North Dakota State Univ., Fargo, North Dakota 58102
A. B. Schooler
Affiliation:
Dep. of Agron., North Dakota State Univ., Fargo, North Dakota 58102
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Abstract

Floral induction in kochia (Kochia scoparia (L.) Schrad.) was influenced more by light period and temperature than by soil fertility or soil moisture. Floral induction occurred when the light period per 24-hr cycle was shorter than a critical length. However, the critical duration of light per 24-hr cycle at which floral induction occurred varied from about 13 to 15 hr among kochia selections. The time from emergence to flowering varied from 57 to 100 days. The kochia selection from New Mexico required a shorter light period and a longer time after emergence for floral induction than did selections from North Dakota, South Dakota, and Minnesota. Kochia selections from the latter three states varied greatly in flowering date.

Information

Type
Research Article
Information
Weed Science , Volume 20 , Issue 5 , September 1972 , pp. 462 - 464
Copyright
Copyright © Weed Science Society of America 

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References

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