Lucratividade financeira das culturas de milho e soja semeadas diretamente em campo natural degradado.

Abstract

Aiming to evaluate economics when introducing grain on physically degraded pasture fields, an experiment was established, comparing different winter crops (CN/P - Natural camp/ fallow; A- Oats; A+E - Oats plus vetch). With a planter coupled to the three point linkage of the tractor, maize and soybeans, (three and five rows, respectively), were planted, placing the fertilizer shank to work to 6 and 12 cm depths. The soil was fairly compacted averaging 1,7 Mg m-3 density. Completely randomized split plots were used working with four repetitions. Main treatments were the winter over crops and summer grain crops (maize and soybeans), and secondary treatments were the working depth of fertilizer shanks. When it came to financial analyses, production costs were higher when using winter cover crops, being the inputs, along with the operations, the higher costs. Using the net results of two years of testing, only CN/P showed lucrativity for soybeans and maize.