Influence of non-chemical weed control methods and biological preparations on weed infestation in the organically grown spring oilseed rape
2015
Mockeviciene, R., Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania) | Velicka, R., Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania);Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania). Experimental Station | Marcinkeviciene, A., Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania);Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania). Experimental Station | Butkeviciene, L.M., Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania);Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania). Experimental Station | Pupaliene, R., Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania);Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania). Experimental Station | Kriauciuniene. Z., Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania). Experimental Station | Kosteckas, R., Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania). Experimental Station | Cekanauskas, S., Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania). Experimental Station
The aim of the research: to identify the influence of non-chemical weed control and biological preparations on spring oilseed rape crop weed density and seed yield. The field experiment was carried out at the Aleksandras Stulginskis University (ASU) Experimental Station in 2014. Soil of the experiment field – Basic epihypogleyic luvisol (HapliEpihypogleyic Luvisol). Treatments of the experiment: factor A – non-chemical weed control: 1) thermal (wet steam); 2) mechanical (inter-row loosening); 3) smothering (self-regulation). Factor B – biological preparations: 1) not used; 2) used. Spring oilseed rape 'Fenja' was grown (8 kg haE-1). Spring oilseed rape 'Fenja' was grown (8 kg haE-1). In the treatment where biological preparations were used, before sowing rape seed was processed with bio-organic fertilizer Nagro (Bioplante) (0.5 litres/10 litres of water per tonne of seed), and crop during the growing sprayed three times with a biological preparation Konflic. Using the thermal and mechanical weed control oilseed rape was grown within 48 cm row spacing. Without the use of biological preparations for mechanical weed control the efficiency was 1.9 times higher than using thermal. With the use of biological preparations thermal weed control efficiency was 1.3 times greater than the mechanical. Significantly lower weed number from 1.7 to 4.6 times in comparison with other weed control methods was obtained in plots with mechanical weed control, without biological preparation, as well as with using them. The lowest dry weight of weeds found after using mechanical control and without the use of biological preparation. The highest seed yield of oilseed rape was determined in plots were mechanical weed control was used. The use of biological preparations significantly increased rapeseed yield by 17.4 percent only in plots with thermal weed control.
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