Productivity of soybean cultivars in two planting seasons
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Abstract
The research was developed in areas of the Scientific and Technological Base Unit, Los Palacios, Pinar del Rio, belonging to the National Institute of Agricultural Sciences, with the objective of analyzing the productivity of soybean cultivars in two planting seasons. Cultivars DT-20, DVN-5, DT-26, DVN-6 of Vietnamese origin were used, which were sown on a Ferruginous Petroferric Nodular Gley Hydromorphic soil, on two different dates (January and May 2013), corresponding to the cold and spring seasons, respectively. A randomized block experimental design with four treatments (cultivars) and three replicates was used, and growth and agricultural yield variables were evaluated. The results showed variation among cultivars for the same planting date and between seasons. At sowing in May 2013, cultivars achieved a higher value of total aerial dry mass as well as agricultural yield. However, the best results in terms of harvest index were obtained in the January sowing. It should also be noted that in general for the two sowing dates, the variables most associated with agricultural yield were the number of pods and the number of grains per plant.
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