Sējas vīķu (Vicia sativa L.) šķirņu salīdzinājums bioloģiskās saimniekošanas apstākļos
2021
Zarina, L., Institute of Agricultural Resources and Economics, Priekuli, Priekuli Parish, Priekuli Municipality (Latvia) | Stramkale, V., Institute of Agricultural Resources and Economics, Priekuli, Priekuli Parish, Priekuli Municipality (Latvia) | Jansone, I., Institute of Agricultural Resources and Economics, Priekuli, Priekuli Parish, Priekuli Municipality (Latvia)
Common vetch (Vicia sativa L.) has been grown in Latvia since the beginning of the 19th century. They are valuable in the rough fodder plant, the green mass of which is used for the preparation of green mass, hay and silage, and the seed as additives for concentrates. Despite the ancient experience in growing vetch and it Latvian breeders since the 1960s selection is not addressed. At present, the variety ‘Cēsis vietējie’, which was districted in Latvia in 1950, is still grown. Farmers several varieties imported from abroad are currently grown on the farms, but the vetch seed fields in 2019 in Latvia, there were 160 ha in which three varieties were grown. Variety demonstration trials were established in 2018 in the biological crop rotation fields of AREI Stende Research Centre and Priekuli Research Centre (PRC) and PRC Vilani Division (VD). The experiment includes the most widely grown seed vetch varieties ‘Cēsis vietējie’ and ‘Hanka’. On average, 21.4 t haE−1 was obtained for both varieties in 2019 green mass and 2.9 t haE−1 seed yield. In 2020, the yield of both vetch green and grain was significantly (α = 0.05) lower than in 2019, for the variety ‘Hanka’ by 8.4 and 0.8 t haE−1, respectively, but for the variety 'Cēsis vietējie' by 0.8 t haE−1 for the green mass , and seeds (see Figures 1, 2). The results show that the variety ‘Cēsis vietējie’ has green mass indicators more stable than the ‘Hanka’ variety, which indicates that the local variety is better suited to local conditions, i.e. sk. climate change caused by the prolonged drought in August 2020. The results of the research of sowing vetch varieties show that the variety ‘Cēsis vietējie’ developed in Priekuli has more stable yields in local agro-ecological conditions, for which the difference in both green mass and grain yield did not exceed 0.8 t haE−1 per year. The Polish ‘Hanka’ variety, on the other hand, has a unfavorable weather due to the conditions in the 2020 season, the yield of green mass and grain was significantly (α = 0.05) lower. Preliminary data show that this variety has lower adaptability and yield stability.
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