Resistência do solo à penetração em diferentes sistemas de manejo em área cultivada com Triticale BRS, 148.

Abstract

Soil resistance to penetration is an important indicator of physical quality of cultivated soils. The present work aims to evaluate soil resistance to penetration in different management systems as well as the development of triticale BRS 148 cultivation. The study was conducted at Fazenda Experimental Lageado, FCA/UNESP, Botucatu - SP. Soil at experimental area was classified as NITOSSOLO VERMELHO. Three management soil systems were held: height harrow followed by light harrow (conventional tillage); chisel-plow (reduced tillage) and no-tillage with four repetitions. At the 22 th day after inflorescence soil resistance to penetration was determined by a connected to a Mobile Unit of Soil Sampling (MUSS) which was developed at FCA/UNESP. Data was registered in a Micrologger CR 23X. Simultaneously to data collecting of soil resistance soil samples were extracted for determining water content. Studied data show that the reduced system tillage was the only one which showed lower resistance to penetration within 20 cm of depth; mean data of triticale yield showed no difference among soil preparations.