Avaliação de três sistemas de aplicação de produtos fitossanitários líquidos

Abstract

At present days agriculture has been looking for new technologies for quickly supplying the human needs in foods. It is undeniable that the use of machines in the agriculture as well as the discovery and application of new agricultural techniques or modern and efficient cultural methods allowed the increase of the production and agricultural productivity in the world, enlarging in a significant way, the income of the work, the areas of the cultures and the respective productions, reducing the hand of manual work in the accomplishment of the agricultural works, mainly the dangers to the human health. Due to those technological progresses there is a series of alternatives at the farmer's reach, but that, due to great speed in the innovations, he doesn't have enough information to choose for one or other more appropriate technique. That work had as subject to evaluate a new drag pulverization system (SPAR) as well as to compare it with the two more used systems which are: bars pulverizer and agricultural aviation. Three parameters were used to compare the systems and evaluate, operational capacity, mechanical damages and drops deposition. Regarding to the operational capacity the SPAR system was 100% superior on average to the pulverizer equipped with normal bars under tests conditions. Aerial application under tests conditions presents a superior operational capacity in relation to the two terrestrial systems. For mechanical damages doesn t exist any medium productivity difference among the systems, however, in grassy having between nodes as corn and sorghum should only be used the SPAR system in the initial phase of the culture before the between nodes appearance. The SPAR system has the larger penetration of the product in the inferior layer of the dossal. Within statistical terms didn't exist significant differences among the systems with fungicides application in soybean productivity