Efeito da velocidade de operação e uniformidade longitudinal de uma adubadora puncionadora.

Abstract

The objective was to study the speed effect on the applied amount of seasoning and the longitudinal uniformity of the punch fertilizer applicator, and mapping the fertilizer meter behavior as well. The fertilizer applicator unit was mounted in a testing apparatus to make it operate in different speeds and seasoning levels by punching. The speed effects of 4, 5, 6 and 7 km h-1 and the opening levels of the fertilizer meter in 2, 6,7, 11,4, and 15 mm were analyzed. The uniformity of application among punches using the variation coefficient (VC%) as index was evaluated for the same four opening levels of fertilizer meter and, keeping the same speed. The VC for the longitudinal uniformity of distribution was of 10,6% in the opening of the fertilizer meter of 2 mm, it was less than 6,6% for the other regulations.