Expression of agronomic characteristics of soybean managed under different sowing times and cultivation densities
The work aimed to evaluate the effect of different sowing times and crop densities on the expression of soybean agronomic characters. The design used was completely randomized in a 2x5 factorial scheme (two sowing times and five cultivation densities), in four replications. Sowing in the first season was carried out on November 15, 2018 and the second on December 14, 2018. The cultivation densities were 160, 200, 240, 280 and 320 thousand plants per hectare. Plant height, height of first pod insertion, stem diameter, number of branches, number of pods, number of seeds, number of pods in the lower and upper half of plants, seed mass in the main stem and branches were evaluated, yield and mass of a thousand seeds. Sowing densities did not affect seed yield, sowing in the first season favored higher seed yield and greater mass of a thousand seeds. At lower cultivation densities there was a greater branching of plants and a greater number of vegetables per plant, showing phenotypic plasticity. The increase in the density of crops favors a greater proportion of seeds in the main stem and in the upper half of the plants.
| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | por |
| Published: |
Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata
2021
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| Online Access: | https://revistas.unlp.edu.ar/revagro/article/view/13020 |
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| Summary: | The work aimed to evaluate the effect of different sowing times and crop densities on the expression of soybean agronomic characters. The design used was completely randomized in a 2x5 factorial scheme (two sowing times and five cultivation densities), in four replications. Sowing in the first season was carried out on November 15, 2018 and the second on December 14, 2018. The cultivation densities were 160, 200, 240, 280 and 320 thousand plants per hectare. Plant height, height of first pod insertion, stem diameter, number of branches, number of pods, number of seeds, number of pods in the lower and upper half of plants, seed mass in the main stem and branches were evaluated, yield and mass of a thousand seeds. Sowing densities did not affect seed yield, sowing in the first season favored higher seed yield and greater mass of a thousand seeds. At lower cultivation densities there was a greater branching of plants and a greater number of vegetables per plant, showing phenotypic plasticity. The increase in the density of crops favors a greater proportion of seeds in the main stem and in the upper half of the plants. |
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