ADUBAÇÃO DE SISTEMA COM FÓSFORO E POTÁSSIO NA SUCESSÃO SOJA/MILHO EM CONDIÇÕES DE CERRADO

Abstract

This work aimed to test the efect of the fertilizing system in the management of phosphorus and potassium of soybean and corn succession. The experimental desing used was randomized block desing with nine tratament and 4 repetition. Was tested 9 trataments with a Check tratamento (T1); Conventional fertilizing (T2); All fertilizing at soy (T3); All P at soy and 50% of K (T4); All P in soy (T5); All P at soy and K at corn (T6); All K at soy and P at corn (T7); 50% of K at soy, 50% K at corn (T8) and All P and K in corn (T9). The experimental trials were conducted at the innovation and Technology Center – CIT GAPES, in the city of the Rio Verde –GO, during two soybean crops (2018/2019 and 2019/2020), were evaluated: plant stand, plant height, number of pods, number of nodes, weight of Thousand grains and productivity. In the corn crop in 2019 plants stand, plant heigth, ear insertion height, number of grains per ear, weight of a Thousand grains and productivity were evaluated. There was no statistical difference between the treatments tesded in the fertilization of systems with phosphorus and potassium in the soybean/corn succession for the soybean crop, with statistical difference only in the plant height and number of grains per ear in the corn crop.