[Dynamics of weed number and the composition of their varieties in Latvia during last fifty years]

Lapins, D. . Faculty of Agriculture. Inst. Crop Sciences. Dept. of Soil Management

[Dynamics of weed number and the composition of their varieties in Latvia during last fifty years]

1999

Lapins, D. (Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. Crop Sciences. Dept. of Soil Management)

On the ground of the scientific investigations at the Latvia Plant Protection Centre (1947-1981) and the Latvia University of Agriculture (1994-1998) the dynamics of grain crop weediness in Latvia has been analysed. It has been established that such weed species as Bromus secalinus L. and Agrostemma githago L. have almost disappear. The number of Galium aparine L. and Veronica sp. is increasing in crop agrocenosis. In the last 50 years the occurrence of Agropyron repens (L.) in crop sowings has increased. At the beginning of 1980-ies the level of grain crops weediness in some regions of Latvia (Kurzeme and Zemgale) was not lower than that of 1994-1998.

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Mots clés AGROVOC

bromus dynamic models elymus repens escarda galium latvia letonia lettonie malezas mauvaise herbe plant protection protection des plantes recherche research weed control weeds

Informations bibliographiques

Editeur

Latvia University of Agriculture

Pagination

p. 211-218

D'autres materias

Desherbage; Proteccion de las plantas; Modele dynamique; Investigacion; Modelos dinamicos

Langue

russe

Note

Summaries (En, Ru)

3 tables; 12 ref.

ISBN

9984-596-17-6

Titre traduit

Dinamika kolichiestva i vidovogo sostava sornykh rastenij v Latvii za poslednie pyat'desyat let

Type

Summary; Conference

Source

[Agroecological optimization of husbandry technologies. Proceedings of the International scientific conference on Agronomy of the Baltic States Agricultural Universities], Rubenis, J. (Ed.).- Jelgava (Latvia): Latvia University of Agriculture, 1999.- ISBN 9984-596-17-6. 262 p.

Conférence

International scientific conference: Agronomy, Jelgava (Latvia), 8-10 Jul 1999

Sur AGRIS depuis: 2000-08-15

Format: AGRIS AP

Fournisseur de données

Cette notice bibliographique a été fournie par Fundamental Library of Latvia University of Life Sciences and Technologies

Découvrez la collection de ce fournisseur de données dans AGRIS

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