Corn productivity in function of surface application of lime in differents management systems and cultural preparation

Abstract

ABSTRACT:The evaluation of technologies employed at the agricultural production system such as crop rotation and soil preparation, both associated with crop-livestock integration, is crucial. Therefore, the aim of the present study was to evaluate the incorporation of lime for three no-tillage systems and cultural managements in system of crop-livestock integration, with emphasis on corn grain yield. The experiment was conducted from January 2003 to April 2005 at Selvíria city, MS, in Dystroferric Red Latosol, clay texture. The experimental design was randomized blocks with split plots consisted of three main treatments, aimed the soil physics conditioning and the incorporation of lime: PD -No-no-tillage; CM -minimum no-tillage, and PC -conventional no-tillage; and of two secondary treatments related to the management: rotation and crop succession, with four replications. Data on agronomic traits of maize were analyzed: plant height, stem diameter, height of the first spike insertion, 100 grains weight and grain yield. The results showed that the maize produced under the system of croplivestock integration is quite feasible, showing that grain yields are comparable to averages in the region and the different soil physical conditioning and incorporation of lime did not influence the corn yield as well as the cultural managements, rotation and succession, did not affect the maize crop behavior after two years of cultivation.

Tillage and sowing rate in soil physical and agronomic attributes of maize crop

“…Another factor that may affect the development of the maize plant is the tillage system and, in this respect, Kappes et al (2013) verified that maize height was lower with soil tillage systems when compared to no-tillage in two agricultural years, the same effect being observed for ear height. Narimatsu et al (2014) found that maize yield did not differ between soil management systems (conventional tillage, minimum tillage and no-tillage), with differences only for the first ear insertion height.…”