Abstract
Biological features, population dynamics and harmfulness of Aphis fabae on red beet crops in Ukrainian Woodlands were specified. The degree of phytophag population on red beet of the varieties of different maturity groups and under different seeding terms was detected. The efficiency of biological agents Aktofit 0.2 % emulsifiable concentrate, Bitoksybatsylin (BTU) and insecticide Konfidor water-soluble concentrate was determined. It was detected that the agents reduced the pest population (Bitoksybatsylin (BTU) by 77.5 %, Aktofit 0.2 % emulsifiable concentrate — 77.8 %, Konfidor watersoluble concentrate — 78.7 %) and provided root crop growth by 12 %.
Highlights
In Ukraine red beet occupies a leading and in case of mass reproduction of pests the position among vegetables both by cultivating stems and leaves dry up, resulting in weight and area (9%) accounting for 40-45 thousand ha, and sugar content decrease, crops yield sharply by its consumption by population
On red beets the aphid reproduces up to phytophage, the most common and harmful of the autumn, giving in this time 8-10 or more which is the beet leaf aphid – Aphis fabae Scop, generations of wingless and winged individuals (Homoptera, Pemphigidae) (Fig. 1), which is that provide fast spreading over the crop
First of all for timely and efficient conduct of complex plant protection measures against beet leaf aphid it is important to consider its biological characteristics and natural factors action regulating the number of phytophages
Summary
In Ukraine red beet occupies a leading and in case of mass reproduction of pests the position among vegetables both by cultivating stems and leaves dry up, resulting in weight and area (9%) accounting for 40-45 thousand ha, and sugar content decrease, crops yield sharply by its consumption by population. The mass of roots commodity may be areas are concentrated Woodlands of Ukraine – reduced to 30%, sugar – by 1%. Among the factors limiting the realization of is able to quickly increase its population due to potential productivity of red beet varieties, the rapid biotic and parthenogenetic reproduction leading role belongs to pests, including sucking potential. Efficient conduct of complex plant protection measures against beet leaf aphid it is important to consider its biological characteristics and natural factors action regulating the number of phytophages. An integral part of integrated protection of red beet from sucking phytophages is chemical control method by spraying the crops, which is characterized by high technical performance, is the most cost-effective and mobile [2; 5; 6]
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