Banka semena korova u zemljištu zavisno od plodoreda i primenjenih herbicida / Weed seed banks in the soil depending on the crop rotation and herbicide
2015
Konstantinović, Bojan (Poljoprivredni fakultet, Novi Sad (Srbija)) | Blagojević, Milan (Poljoprivredni fakultet, Novi Sad (Srbija)) | Samardžić, Nataša (Poljoprivredni fakultet, Novi Sad (Srbija)) | Popov, Milena (Poljoprivredni fakultet, Novi Sad (Srbija)) | Stošić, Nemanja (Poljoprivredni fakultet, Novi Sad (Srbija)) | Konstantinović, Branko (Poljoprivredni fakultet, Novi Sad (Srbija))
Knowledge of weed seed bank contexture provides better insight into the influence of the applied crop rotation and herbicides to weeds. Spread of weed seeds is critical parameter in the development of weed populations and it could be the key to their control. The study carried out in 2013 at localities Orašac and Mišar, had the aim to establish number and distribution of weed seeds at different soil depths of 0-10 cm, 10-20 cm and 20-30 cm u in wheat and maize crops. The aim was also to determine correlation of the present weed seed bank with crop rotation, as well as with herbicides used in previous years on the given plots. In wheat crop at locality Orašac, where vegetables, alfalfa and maize had been grown with minimal herbicide use for several years repeatedly, great number of weed seed was found (318.779/m2), among which dominated seeds of Portulaca oleracea (229.933/m2) and Amaranthus retroflexus (59.656/m2). In maize crop at locality Mišar, where each year different culture was sown and herbicide use was more intensive, significantly lower number of weed seeds was found in comparison to the studied plot at locality Orašac (28.074/m2), among which the most numerous was seed of Stellaria media (10.049/m2) and Amaranthus retroflexus (5.264/m2).
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