The effects of planting and harvesting factors on hay yield and stem-leaf ratio of Medicago sativa

doi:10.11686/cyxb20150305

Abstract

Abstract: This paper reports the effects of cultivar, seed sowing rate, row spacing, sowing depth and cutting height on hay yield and stem∶leaf ratio of Medicago sativa. Row spacing had the greatest impact on hay yield, especially the first 3 cuts of the growing season and annual yield. However, the cultivar of M. sativa and cutting height were the most important determinants of stem-leaf ratio. Hay yield was greatest at a row spacing of 20 cm and diminished with increasing row spacing. Yield was significantly lower at 50 cm than 20 cm row spacing, but not significantly reduced at 30 cm, compared to 20 cm row spacing. Cultivar differences were evident for hay yield of the fourth cutting, with Xingjiangdaye and Jinhuanghou having high late season yield compared to other cultivars. However, there were obvious differences between the breeds in stem∶leaf ratio, with Zhongmu the lowest and that of Jinhuanghou the highest. Some statistically significant effects of seed sowing rate, sowing depth and cutting height were observed and are discussed. Effects of seed sowing rate, sowing depth and cutting height were not statistically significant.

LIU Dongxia, LIU Guihe, YANG Zhimin. The effects of planting and harvesting factors on hay yield and stem-leaf ratio of Medicago sativa[J]. Acta Prataculturae Sinica, 2015, 24(3): 48-57.

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