Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Weed control in sunflower crops by soil herbicides.

Abstract

Weeds are all harmful or undesirable plants which significantly reduce the yield of crops. Sunflower is a crop of great inter-row distance which has similar weed community as soybean, mayze and sugar beet. According to the previous research, in these crops the main mass of weeds consists of: Amaranthus retroflexus L., Ambrosia artemisiifolia L., Bilderdykia convolvulus L., Cirsium arvense L., Chenopodium alburn L., Convolvulus arvensis L., Datura stramonium L., Echinochloa crus-galli L., Hibiscus trionum L., Polygonum aviculare L., Polygonum lapathifolium L., Polygonum persicaria L., Setaria glauca L., Setaria viridis L., Sinapis arvensis L., Solanum nigrum L., Sorghum halepense (L.) Pers., Stachys annua L. and Xanthium strumarium in L. This paper presents the results of research during spring of 2009, performed in localities, Kovin and Zmajevo in sunflower crop on herbicide efficiency in weed control. The study referred to the efficiency of the herbicides terbutilazine (Radazin TZ 50) and acetochlor+terbutilazine (Radazin extra TZ). The efficiency evaluation of the applied herbicides to the determined weed species was performed 28 days after spraying. Herbicide efficiency is presented by the efficiency coefficient in relation to the number of individuals of each species in comparison with the control variant.