Ampliação da época de semeadura cultivares de feijão na safrinha para a região sudoeste do Paraná

Abstract

The cultivation of common bean in the second crop has economic and social importance as it is a basic food component of the Brazilian diet. The objective of this study was to evaluate the yield of common bean cultivars in four growing seasons in the off-season period aiming at a possible increase in the sowing period by agricultural zoning in the southwest region of Paraná. The sowing took place mechanically with the aid of a planter of plots composed of four lines of five meters in four different times, taking place every fortnight starting on January 20, 2020, February 5, 2020, February 20, 2020 and February 5th. March 2020. The management of pests and weeds took place according to the need determined in evaluations carried out every three days. Disease management was carried out with seed treatment and a preventive application of trifloxystrobin and prothioconazole. The harvest took place following the physiological maturation stage of each plot, harvesting the two central lines and after harvesting they were transported, threshed, cleaned, weighed and stored with the aid of equipment from the Federal Technological University of Paraná. The results were influenced by climatic and human factors, where the fourth season was disregarded as the productivity was zero and losses related to productivity occurred due to the strong drought present in the development phase of the bean plant. The late sowing of beans, from the second half of February in the Southwest Region of Paraná, exposes the crop to productivity losses related to low temperatures, and until the first half of February it is advisable as the crop responds positively to climatic conditions of region.