EFFICIENCY OF NITROGEN AND PHOSPHORUS UTILIZATION IN FOLIAR APPLICATION IN SOYBEAN CROPS

Abstract

The aim of this work was to evaluate the efficiency and agronomic practicality of the INTACTO (P + N) product on soybean crops. The experiment was conducted in the municipality of Londrina - PR latitude S:23º24'11.386", longitude W:51º9'57.418", altitude 480m. The cultivar used was DM 66i68, sown on 24/10/2022, with the following characteristics: 13 plants per meter, spacing of 0.45 m between rows and population density of 288,888 plants per hectare, the first application carried out on 18/11/2022 and ending the trial with the harvest on 21/02/2023. The experimental design used was randomized blocks with 5 treatments and 4 replications. The applications were carried out with a CO 2 knapsack sprayer equipped with a 2 m spray boom containing 4 fan-type tips spaced 0.50 m apart. The working pressure was 20 lb/in2, with a spray volume of 150 L/ha. In the following results, the treatments show the formulated products with their respective doses in mL/ha or g/ha in brackets. The application times used were A: V4 Third fully developed trifoliate leaf. The evaluations carried out were: Plant height: 14/11/2022. Final plant stand: 22/01/2023.