Co-inoculação e condicionador de solo sobre a produtividade da cultura da soja

Abstract

Soy is the main agricultural crop in Brazil, representing the main export product. Soybean productivity is closely associated with good nutrition, with Nitrogen being the main nutrient in this oilseed. As the main source of nitrogen in soybeans, there is a natural absorption process by symbiosis with the Bradyrhizobium bacteria. The use of inoculation is something primordial and already consolidated, however, the association with Azospirillum, which is called co-inoculation, is something that has been showing agronomic efficiency. Also the use of soil conditioners, such as the use of humic and fuvic acids, are alternatives that have been used in association with co-inoculation, in order to improve the soil biota. Still the use of soil scarification is something that has been associated. In this sense, studies that can refer to the joint use of co-inoculation with the use of conditioners and the scarification of the soil, on the response of soybean productivity need to be explored, thus, the objective of the present work. The experiment was carried out in the municipality of Verê - PR, in a commercial field. Using the following treatments: T1 (without co-inoculation and without conditioner), T2 (co-inoculation), T3 (co-inoculation + conditioner + with scarification) and T4 (co-inoculation + conditioner + without scarification). The parameters evaluated were: plant height, number of pods per plant, number of total nodes, height of insertion of the first pod, weight of 1000 grains and productivity. The results showed that the use of co-inoculation associated with the soil conditioner, provided greater productivity gains. The use of scarification did not interfere with the production process of the culture.