Effects of primary soil tillage on weediness of crops | Augsnes pamatapstrādes ietekme uz sējumu nezāļainību
2014
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. 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 at the Study and Research Farm “Peterlauki” of the Latvia University of Agriculture during the period 2010 – 2013. Two soil primary tillage treatments were investigated: conventional ploughing, plough tillage (0.22 – 0.23 m) with a mouldboard plough, was compared with the minimum or shallow (0.10 – 0.12 m) tillage with a disc harrow. The weed control with herbicides was applied. The hypothesis stated that the decreasing intensity of soil tillage has a significant influence on the weed population – the number of weeds in crops may increase. A significant higher total number of weeds and perennial weeds was determined in the crops on soils with ploughless tillage. Statistically significant differences in weed weight were not observed during the research when ploughing was replaced by minimum tillage.
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