Abstract
Leaf angles, frequency distribution of leaf area inclinations, leaf area index, amount of intercepted radiation, biological, vegetative and grain yields and grain yield proportion of biological yield were determined in maize stands of two population densities, 55 555 plants ha−1 (S 1), and 80 000 plants ha−1 (S 2). Also the effect of the artificial change of leaf angle upon these indices was studied. We classified normal maize stand (N) as the interstage between a planophile and a plagiophile type of canopy, that with artificially changed leaf angle (V) as an erectophile type of canopy. The relative interception of the incoming radiation in the variantsV S 1 andV S 2 was lower than in the variantsN S 1 andN S 2. The variantsV in comparison with variants N increased grain yield and biological yield.
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