Fertilização líquida via jato dirigido sobre sulco de semeadura na cultura da soja

Abstract

Soybean is the most cultivated species in Brazil and is currently in constant expansion. For a good development of this culture and consequently good yield, many key factors are taken into consideration, among the most important is fertilization. In this context, this study aimed to evaluate the influence of the nutrients Calcium, Sulphur and Molybdenum during the early development stages through liquid spraying over the seeding line immediately after planting. The study was conducted in Sinop – Mato Grosso, between October and March, during the 2013/14 season. The treatments were arranged as follows: T1: control; T2: Calcium; T3: Sulfur; T4: Molybdenum; T5: Calcium and Sulfur; T6: Calcium and Molybdenum; T7: Calcium, Sulfur and Molybdenum in fixed dosages of 2 L ha -1, 1,5 L ha -1 and 0,3 L ha -1 of Calcium, Sulfur and Molybdenum fertilizers respectively. The following characteristics were analyzed: Average plant height, average height of first pod insertion, number of pods per plant, number of grains per pod, weight of 100 grains, average grain productivity and soil fertility. There was no significant difference between treatments, however there was an increment of productivity in the plots that received treatment in relation to control.