Behaviour of corn complex herbicides applied in different ways on common chernozems in steppes of the Ukraine. Report 3. Dynamics of the content of residual amounts of herbicides in the soil and their modelling

Ladonin, V.F.; Kramarev, S.M.; Klyavzo, S.P.; Golovko, A.I.; Bondar' , V.P.

Agrokhimiya (1): 72-78


ISSN/ISBN: 0002-1881
Accession: 002763585

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Results are given of investigations in Ukraine on the fate of various herbicides applied by the continuous and band methods in maize. Differing precursor crops and types of basic soil cultivation were also taken into account. Data are presented on persistence in the soil, movement in the soil profile, and accumulation in maize plants. Mathematical analysis showed that the dynamics of herbicide residues in the soil was best represented by an exponential model, enabling residue contents to be predicted in relation to time on the basis of the data from monitoring. In constructing the model it is necessary to take into account the duration of the lag period. In establishing new methods of cultivation preference should be given to the band method of herbicide application, although in pointing out the importance of proper adherence to norms of herbicide application reference is made to unacceptable crop residues arising from band application of pure Acenite [acetochlor?] rather than its application as a working solution.