Effects of soil tillage minimization on weediness of crops | Augsnes apstrādes minimalizācijas ietekme uz kultūraugu sējumu nezāļainību
2012
Melngalvis, I., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture | Ausmane, M., 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. According to the modern view on the arable cropping system, the new minimal tillage systems become more popular. 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 Study and Research Farm “Peterlauki” of the Latvia University of Agriculture during the period 2009, 2010. Two soil primary tillage treatments were studied: 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 used. 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 lowest number of perennial weeds was determined in the soil of deep ploughing. During the research the statistically significant differences in weed number were not observed, when ploughing was replaced by minimum tillage.
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