Avaliação da cultura da soja cultivada em diferentes espaçamentos

Abstract

Soy is a plant belonging to the legume family, scientifically named Glycine max (L), and comprises more than 7000 varieties. The grain presents 90 to 100% of total digestible nutrients, due to the high oil content, and 42% crude protein in the dry matter, but it is low in calcium, vitamin D and carotene. Soybean farmers are looking for more efficient alternatives or technologies to be able to increase their production using the same amount of area, but these technologies are expensive. Therefore, this work was carried out in Marialva-PR, with the objective of evaluating different population arrangements in the soybean crop, as an alternative to increase production and improve the productive system. The treatments applied were: T1: 50 cm between plants, T2: 35 cm between plants, T3: 25 cm between plants with parallel of 50 cm, T4: 25 cm between plants, T5: 35 cm between plants with parallel of 70 cm, being evaluated the variables responses: height, number of branches, number of nodes, number of pods, productivity and dry matter. Although the population densities did not contribute significantly to the increase in grain production, the use of reduced spacings such as 35 cm and 25 cm provided an increase in plant size, both in height and in the production of branches. In addition, it is worth mentioning that the use of parallel lines is not a profitable technology for soy producers.