Desenvolvimento e avaliação de um implemeto agrícola para abertura de sulcos de irrigação, semeadura e adubação na lateral do camalhão.

Abstract

The literature recommends that sowing and fertilization should be on the side of the ridges, to favor the germination of seeds and avoid salinity problems. However, this practice is faced with limitations due to the lack of equipment suitable for mechanization. Aiming to meet this need, an agricultural implement was developed and evaluated to simultaneously perform the operations of furrowing, sowing and fertilization on the side of the ridge, mechanized. The development of the prototype consisted of the adaptation of an animal traction seed drill under a conventional tractor. For this purpose, a support plate, shaped like the irrigation groove, has been constructed and welded to the furrows of the trencher to follow the geometrical shape of the furrow. On the side of the support plate were introduced small independent furrowers, to effect the opening of grooves for deposition of seeds and fertilizers. In the rear part it was fixed to terradores in order to complete the cover of the seeds and fertilizers. For the evaluation of the prototype, an experiment with a randomized complete block design was used. tested against the conventional tractor, sowing manual and with the rattle and manual fertilization in the implantation of the cultivation of cotton under irrigated conditions. The experimental data of operational capacity, operational efficiency and economic analysis were submitted to the analysis according to the conventional method of comparison of variance. The results indicate that the prototype performed satisfactorily the operations proposed, presenting a cost savings of 216.8% in relation to conventional grooving, sowing and manual fertilization and 110% when sowing was done with the rattle and manual fertilization.