Yield and productivity indices of common bean and sunflower intercropping in different planting ratios

Subject Areas : Journal of Plant Ecophysiology

محمد قلی‌پور ¹ (دانشجوی کارشناسی ارشد، دانشگاه آزاد اسلامی، واحد رشت، گروه زراعت و اصلاح نباتات، رشت، ایران)
Peyman Sharifi ² (دانشگاه آزاد اسلامی، واحد رشت، گروه زراعت و اصلاح نباتات، رشت، ایران)

Received: 2016-05-29 Accepted : 2016-07-20 Published : 2018-08-23

Keywords: competition, land equivalent ratio, Competitive ratio, Relative Crowding Coefficient,

Abstract :

Intercropping beside of increasing of yield than sole crops, enhance heterogeneity and biodiversity in agroecosystems. To evaluate yield and productivity indices of Guilan lanrace bean (Phaseolus vulgaris L.) and sunflower (Helianthus annuus L.) intercropping, a field experiment was conducted as randomized complete block design with three replications in 2014-15 growing season, at Somea-Sara, Iran. The planting ratios were 0:100, 25:75, 50:50, 75:25 and 100:0 (bean: sunflower) using replacement method. Intercropping had significant effect on pods per plant and seed yield of bean, and it had significant on plant height, head diameter, heads per plant, 100 seed weight, seeds per head and grain yield of sunflower. The land equivalent ratio (LER) were less than one in 75:25 and 50:50 (bean: sunflower) intercropping ratios, while it was equal to 1.15 in 25:75 bean-sunflower intercropping ratio, which indicates the intercropping cultivation of beans-sunflower had the highest efficiency by 15%. Sunflower in the planting ratios of 25:75 and 50:50 (bean: sunflower) had the highest relative crowding coefficient (RCC), therefore it was a dominant crop and bean had the least RCC and was a reccesive crop. The competitive ratio value (CR) of bean was less than one, which this means that bean was less competitive than sunflower in the intercropping system. It is concluded that sunflower and bean intercropping system have a substantial advantage compared to sole cropping systems and the intercroping ratios of 25:75 (bean-sunflower) was as superior planting ratio.

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