Effect of winter cover crops on corn growing under zero-tillage system
Keywords:
agroecological management, spontaneous plants, soil cover, yield, familiar farmingAbstract
With the aim of assessing the feasibility of using zero-tillage with no herbicides, different mixtures of rye, vetch and oilseed radish were tested for the control of resident vegetation and promotion of maize yield. Cover crop biomass, soil cover, and resident vegetation biomass were measured during winter. Soil cover was higher than 80% during all the season, with no significant differences among the measured variables. The use of cover crops allowed for satisfactory growth of maize, which had yields (6.0-6.0 t.ha-1) above the average in the region, with no difference among tratments. The comparison of harvested grain value and cover crop seed costs showed that no-herbicide zero-tillage growth of maize is viable.
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