Effects of soil tillage minimization and crop rotation on the weediness of crops | Augsnes pamatapstrādes minimalizācijas un augu maiņas ietekme uz sējumu nezāļainību
2013
Ausmane, M., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture | Melngalvis, I., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture | Ruza, A., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture
Soil tillage is one of the most power-consuming and expensive processes in agricultural production. The minimum tillage practices have significant ecological as well as agronomic impact by reducing the soil disturbance and enhancing the soil system stability. The paper presents the results of stationary field experiments carried out in the Training and Research Farm Peterlauki of Latvia University of Agriculture during the period 2010, 2011 and 2012. Two soil primary tillage treatments were investigated: conventional ploughing – plough tillage – (0.22 – 0.23 m) with mouldboard plough was compared with the minimal – shallow (0.10 – 0.12 m) tillage with disc harrow. The weed control with herbicides was applied. The hypothesis states that the decreasing intensity of soil tillage has important influence on the weed population – the number of weeds in crop may increase. It was established that the number of short-lived weeds was similar in differently tilled soils, the significantly higher number of perennial weeds was determined in the soil of ploughless tillage. In the investigation statistically significant differences in the weed weight were not observed when ploughing was replaced by minimum tillage.
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