RAVENOUS ENTOMOFAUNA OF OAT DENSITY CULTIVATED ON NO-TILL TECHNOLOGY
Abstract
Stability of phytosanitary situation in agrocenoses of crops is supported by entomophages that can restrict the growth of harmful species density. The paper reveals the assessment of the situation in concern of useful fauna on the oats sowings cultivated traditionally and on No-till technologies. Oat is an important food and feed grain crop. No-till technology implies the absence of mechanical tillage and seed sowing in stubble, what contributes to conservation of material and energy resources, soil fertility and environmental protection. The researchers found out that on average total number of ravenous entomofauna in a stalk oat on No-till technology was 1.6 times higher, than that in traditional technology for 2 years. The authors didn’t observe the impact caused by No-till technology on the number of some species of entomophages (Coccinellidae, lion aphids, Nabis, Orius, syrphids and spiders). The abundance of cereal aphids, which are the main food source of the most studied predators didn’t depend on the technology of oat cultivation in concrete years and on average.
Keywords
oats,
cultivating technologies,
No-till,
Coccinellidae,
lion aphids,
Nabis,
Orius,
syrphid fly,
Chamaemyiidae,
spiders,
greenbugs,
entomophages
About the Author
I. G. Bokina
Siberian Research Institute of Farming and Chemicalization of Agriculture
Siberian Federal Research Centre of Agribusiness, RAS, Novosibirsk
Russian Federation
Dr. of Biological Sc.
Russian Federation
Dr. of Biological Sc.
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Review
For citations:
Bokina I.G. RAVENOUS ENTOMOFAUNA OF OAT DENSITY CULTIVATED ON NO-TILL TECHNOLOGY. Bulletin of NSAU (Novosibirsk State Agrarian University). 2018;(1):72-79. (In Russ.)
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