Effects of seeding rate and variety on branch number and plant height of alfalfa

doi:10.11686/cyxb2016426

Abstract

Abstract: In order to explore the effects of the seeding rate and alfalfa varieties on the branch number and plant height, we carried out a field experiment comprising a split plot design with 3 seeding rates (15.0, 22.5, 30.0 kg/ha) as the main plots and 8 alfalfa varieties with different fall dormant classes as subplots in 2012-2014 (Concept, WL-319HQ, Adrenalin, WL-343HQ, WL-363HQ, Icon, WL-525HQ, WL-903HQ). The results indicated: 1) Seeding rate had no significant effects on the primary and secondary branch number in alfalfa, and the primary and secondary branch number differences among varieties also were not significant. With increase in stand age, the primary and secondary branch number of all varieties increased (planted in 2012>2013>2014). 2) Average branch number of different varieties did not differ significantly between 2012 and 2013, but in both cases was higher than that of 2014-sown plants. 3) Seeding rate and stand age did influence plant height. With increase in seeding rate from 15.0 to 30.0 kg/ha, plant heights of most varieties were gradually decreased, but branch number was unchanged. Plant height was greater for 2013-sown plants, than for those sown in 2012 and in 2014.

WANG Yan-Hua, LI De-Feng, QI Sheng-Li, WANG Cheng-Zhang, GAO Yong-Ge, ZHENG Chun-Lei, LI Peng-Fei. Effects of seeding rate and variety on branch number and plant height of alfalfa[J]. Acta Prataculturae Sinica, 2017, 26(3): 183-190.

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