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Vztah hustoty porostu ozimých plodin a intenzity zaplevelení v provozních podmínkách
Punčochář, Radek
Weed infestation was carried out in the vegetation of oilseed rape and winter wheat in the operating conditions. The aim was to observe a difference between between autumn and spring in the weed species composition in individual crops. Species Chenopodium strictum and Thlaspi arvense were identified in the vegetation of oilseed rape in autumn and species Capsella bursa-pastoris and Tripleurospermum inodorum during spring. Species Euphorbia cyparissias, Stelaria media and Rumex crispus were found in winter wheat during autumn. Results, which are not statistically significant, show that there is a relation between the density of winter crop vegetation and the weed species composition. Species Chenopodium strictum, Thlaspi arvense, Triticum aestivum and Tripleurospermum inodorum occurred in sparse population of oilseed rape. Species Lycopsis arvensis and Polygonum arenastrum were found in denser vegetation of oilseed rape. Species Avena fatua, Stelaria media and Thlaspi arvense were observed in sparse population of winter wheat and in denser species Geranium dissectum and Erodium cicutarium.
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Vyhodnocení zaplevelení vybraných plodin v provozních podmínkách
Punčochář, Radek
Evaluation I conducted on the land where it was planted winter wheat (Triticum aestivum) variety ELLY and Rape (Brassica napus var. Napus) variety PL 45 D03. I conducted measurements on land now Agri Ujčov, Inc., located the Vysočina Region, micro Bystřicko. Calculation of individual weed species have I done before spring application of herbicide products in terms of 15.3, 16.3, 21.3 and 22 Mar. 2014. The winter wheat crop occurred following weed species: Capsella bursa-pastoris, Thlaspi arvense, Cirsium arvense, Silene noctiflora, Galium aparine, Viola arvensis and Fumaria officinallis. On one plot occurred Fraxinus excelsior raid. The crop of winter oilseed rape occurred following weed species: Carduus acanthoides, Tripleurospermum maritimum, Apera spica-venti, Geranium pusillum, Thlaspi arvense, Lycopsis arvensis and Viola arvensis.
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