Semeadura de milho em solo compactado sob diferentes profundidades de atuação da haste sulcadora

Abstract

The Corn is used in crop rotation with soybeans and animal feed as silage, providing food to animals for production, mainly of milk, the vast majority of corn planted in southwestern Paraná is spread with tillage system. The objective of this study was to evaluate the effects of different depths of action of the shank of fertilizer in compacted soil on quality parameters of sowing of corn, cultivated after black oat in a Latossolo Vermelho distroférrico. The experiment was conducted in the experimental area of UTFPR - Campus Pato Branco - PR. The experimental design was randomized blocks, with four treatments and four repetitions, totaling 16 experimental units. The treatments consisted of four depths of shank of fertilizer (0.06; 0.09; 0.12; 0.15 m), and evaluated the depth of seed deposition, groove width, area and volume soil mobilized, seedling index emergence speed, stand of initial plant. With this work it can be seen that with increasing depth of operation of the shank, there is an increase of sowing depth, maximum depth groove, groove width, area and volume of soil disturbed and that the increasing depth of operation the grooved shaft has no effect on the emergence velocity index and initial plants stand.