Effects of dense planting and artificial shading on five maize hybrids

摘要: Abstract The effect of light stress originating from artificial partial shading and selfshading caused by dense planting on the grain yield five maize communities differing genotypically in earliness was studied. sensitivity plants different growth stages to also investigated. Finally, possibility relieving manipulating leaf inclination tested populations. Increasing density a 5 plants/m 2 community two half times seemed as detrimental for per plant decreasing community's illumination shading. relative performance hybrids changed both self-shading. No relationship found between response nor self-shading resulting planting. Both pot field trials showed higher during period 10–20 days after silking than earlier periods. Leaf erectness small increase 10 when soil conditions were optimum. Under moisture it had no while depressed at densities.