Effect of Plant Spacing on Growth and Grain Yield of Soybean

• 作者: Bhagirath S. Chauhan Jhoana L. Ope?a
• 来源期刊: 美国植物学期刊(英文)
• 学科: 农学
• 关键词: ROW SPACING PLANT to PLANT SPACING LEAF Area WEED Biomass
• 年，卷（期）: mgzwxqkyw_2013,（10）
• 页码范围: 2011-2014
• 页数: 4页
• 分类号: S5

摘要

In the Philippines, rice monoculture systems are common. Compared to these systems, the rice-soybean cropping system may prove more water-efficient and there is a trend of increasing soybean area in the response to water scarcity and need for crop diversification in the Philippines. A field study was conducted to evaluate the effect of row and plant to plant spacing (20 × 10, 20 × 5, 40 × 10, and 40 × 5 cm) on growth and yield of soybean. Plant height was not influenced by the plant geometry. Spacing, however, influenced leaf area and shoot biomass of soybean. Plants grown at the widest spacing (i.e., 40 × 10 cm) produced lowest leaf area and shoot biomass at 6 and 12 weeks after planting. Leaf area and shoot biomass at other three spacing were similar. There was a negative and linear relationship between weed biomass and crop shoot biomass at 6 and 12 weeks after planting. Grain yield of soybean was not affected by plant geometry and it ranged from 1.3 to 1.9 t·ha-1 at different spacing.