Agronomy Research (2006) 4, 433-436

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I. Vanaga, J. Gurkina, O. Treikale, I. Priekule and J. Pugacova (2006)
Influence of Heracleum sosnowskyi control measures on weed diversity in agricultural fields in Latvia
Agronomy Research 4 (special issue), 433-436
Abstract: In a field infested with Heracleum sosnowskyi, plots were cultivated by disc harrow or ploughed in 2003 and then sown with one of two grass mixtures. Half of the grass plots were sprayed once with a herbicide containing MCPA, fluroxypyr and chlorpyralid; the other half were cut 3 times with a hand mower. In 2004 a similar trial was established after an early season application of glyphosate to control Elymus repens and the soil had been deep ploughed. The most effective control of H. sosnowskyi and E. repens was obtained by glyphosate application after spring regrowth followed by deep ploughing. This treatment did not adversely affect either numbers of dicotyledonous species or numbers of dicotyledonous plants that grew in the sown grass swards. Ploughing gave better control of H. sosnowskyi and E. repens than disc harrowing and provided better seedbeds for sward establishment. Ploughing also increased the numbers of dicotyledonous species and plants compared to disc harrowing. Chemical weed control reduced diversity and plant numbers, but weed control by cutting did not.
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Full text of article
Database assignments for author(s): Ineta Vanaga

Research topic(s) for pests/diseases/weeds:
control - general


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Elymus repens (weed) Grasses/turf/rangeland Latvia
Heracleum sosnowskyi (weed) Grasses/turf/rangeland Latvia