CRITICAL PERIODS OF HARMFUL PLANTS IN POTATO PLANTS

Main Article Content

Зарина Петровна Оказова

Abstract

According to the conclusion of leading Russian herbologists, 1/3 of the cost of a unit of agricultural production is the cost of weed control, the main factor limiting yield and product quality. The purpose of the study is to determine the species composition of weeds and the critical periods of their harmfulness in the agrocenosis of potatoes in the forest-steppe zone of the Republic of North Ossetia-Alania. The experiment on the study of critical periods of weed damage was carried out using 2 zoned potato varieties: Goryanka and Vineta in the period 2020-2022. in the Prigorodny district of the Republic of North Ossetia-Alania. The study was carried out in accordance with the Guidelines for the determination of critical periods and economic thresholds of weed damage in crops (1985). As a feature of the joint growth of potatoes and weeds, one can name the location of the root system of most components of the agrocenosis in a layer of 10-20 cm. In the potato agrocenosis, a complex type of infestation prevailed, spring weeds (43.8%), which is associated with the biological characteristics of the culture. In second place in terms of occurrence are wintering weeds (16.25%): in particular, blue cornflower (Centaurea cyanus (L.)), Canadian small-flowered (Erigeron canadensis (L.)), self-seed poppy (Papaver rhoeas (L.)). The critical period of weed damage when growing potatoes of the Vineta variety is 25-27 days; Goryanka 15-16 days from the moment of emergence of shoots. In the forest-steppe zone of the Republic of North Ossetia-Alania, it is advisable to cultivate an early ripe potato variety of the Russian selection Goryanka. The results obtained are necessary for the development of evidence-based measures to control weeds in potato plantings in the forest-steppe zone of the Republic of North Ossetia-Alania.

Article Details

Section
Food science

References

1. Ivanova I.YU., Konstantinova S.P. Zashchita semennykh posadok kartofelya ot sornyakov // Mezhdunarodnyi nauchnyi sel'skokhozyaistvennyi zhurnal. 2019. № 3. S. 32-35.
2. Isaev V.V. Prognoz i kartirovanie sornyakov // M.: Agropromizdat, 1990. 192 s.
3. Makaeva A.Z., Okazova Z.P. Vidovoi sostav sornykh rastenii posevov osnovnykh polevykh kul'tur v lesostepnoi zone Chechenskoi Respubliki // Uspekhi sovremennogo estestvoznaniya. 2016. № 7. S. 70-75.
4. Tebuev KH.KH. Metody zashchity kartofelya ot sornyakov, vreditelei i boleznei v KBR // Izvestiya Kabardino-Balkarskogo gosudarstvennogo agrarnogo universiteta im. V.M. Kokova. 2017. № 2(16). S. 20-24.
5. Tkach A.S., Golubev A.S., Svirina N.V. Bor'ba so zlakovymi sornymi rasteniyami v posadkakh kartofelya // Izvestiya Sankt-Peterburgskogo gosudarstvennogo agrarnogo universiteta. 2021. № 2(63). S. 62-68.
6. Yakovleva M.I., Dmitriev V.L., Lavrent'ev A.YU. Urozhainost' kartofelya v sevooborote po lyupinovomu predshestvenniku // Fermer. Chernozem'e. 2019. № 3(24). S. 20-21.
7. Chovancova S. Effect of Tillage Technology on Species Composition of Weeds in Monoculture of Maiz // International Journal of Biological, Biomolecular, Agricultural, Food and Biotechnological Engineering. - 2014. - № 8. - Р. 856-860.
8.Raoofi M. The effect of hand weeding and planting density on the yield, essential oil content and some morphological properties of peppermint(MenthaPiperitaL.) in Hamadan // Journal Crop and weed. - 2015. - № 11. - Р. 154-160.
9.Rudska N.O. Influence of technological techniques and improvement of the system of protection of sunflower crops from weeds // Colloquium-Journal. 2021. № 16-2 (103). С. 22-30.
10.Yakimovich A. Influence of row spacing and harmfulness of weeds on yield and quality of flowers of german chamomile (matricaria chamomilla l.) in spring sowing crops // Progress in Plant Protection. 2020. Т. 60. № 3. С. 193-200.
11.Vasic V. Weeds in Forestry and Possibilities of Their Control // Edited by Dr. Andrew Price. - Rijeka, 2012. - 276 p.