Dicotyledonous weed control in maize and the influence of weed densities on the yield | Divdīgļlapju nezāļu ierobežošana kukurūzas sējumos un nezāļu skaita ietekme uz ražu
2013
Vanaga, I., Latvian Plant Protection Research Centre, Riga (Latvia) | Mintale, Z., Latvian Plant Protection Research Centre, Riga (Latvia)
The area of maize (Zea mays L.) grown in Latvia has increased almost 11 times during the past 10 years (2002: 1.2 thousand ha; 2011: 10 thousand ha), mainly the crop has been used for biomass to produce biogas. The aim of the investigation was to determine the possibilities of the application of herbicides on weed control in maize and effect of weed infestation on the crop yield. The field trials were carried out at the Research and Study Farm „Vecauce” of the Latvia University of Agriculture during growing seasons of 2011 (cultivar ‘Cester’) and 2012 (cultivar ‘Tango’) in maize. The numbers of dicotyledonous weed species recorded in each trial ranged from 18 to 19, and from 3 to 5 species were dominant (i.e. accounting for more than 75% of population). Among the most frequent weed species were Chenopodium album, Viola arvensis, Thlaspi arvense, Polygonum convolvulus, Lamium purpureum and Veronica arvensis. The results showed that both mechanical and chemical weed control significantly increased the yield of maize.
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