Long-term application of the herbicide roundup in the Central Nonchernozemic zone | Многолетнее применение общеистребительного гербицида раундап в Центральном районе Нечерноземья
2010
Spiridonov, Yu.Ya. | Larina, G.E. | Protasova, L.D. | Abubikerov, V.A. | Zharikiov, M.G., All-Russia Research and Development Inst. of Phytopathology, Moscow Region (Russian Federation)
Development of a weed cenosis was studied on a fallow field after the application of organophosphorus herbicides in the Nonchernozem zone. It was found that the biannual (in 2007-2008) application of Roundup at a rate of 3 1/ha reduced the content of impurities by 94-99%. Perennial regular application at a rate of 3-9 l/ha did by 98-100%. A number and abundance of species reduced to 0-15 (153-275 g/square meter) in different years of observations compared to 58 species (796 g/square m on average) in the control treatment (without application of the herbicide). Bird vetch (Vicia cracca) and wormwood (Artemisia vulgaris) were found to be tolerant (or relatively resistant) to the glyphosate herbicide. Foalfoot (Tussilago farfara), ommon dandelion (Taraxacum officinale), couch grass (Agropyron repens), maywedd (Matricaria inodora), purple deadly (Lamium purpureum were sensitive to Roundup. The residual herbicide increased a population of saprotrophic microflora in soddy-podzolic soil during one month after application. Later the number meaning was close to be normal (1.46 х 10 E7 CFU (colony forming unit per 1 gram of soil).
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