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O‘zbekcha

SEASONAL DEVELOPMENT RATES OF PEST INSECT POPULATIONS (EXAMPLE OF PEA AGROCENOSIS)

Mualliflar

Kalit so‘zlar:

pea agrocenosis, A. pisum, H. armigera, dominant, pest, phytophage, population, seasonal dynamics, regression, Fergana Valley.

Annotatsiya

The article presents the population dynamics of the species Acyrthosiphon pisum and Helicoverpa armigera in pea agrocenoses. The research was conducted in the northern part of the Fergana Valley within pea agrocenoses.

Acyrthosiphon pisum (Harris, 1776) is a dominant aphid species in the entomofauna, exhibiting a single peak in its population during the season. The empirical results and approximated indicators demonstrated a level of reliability (tf=3.60; tst=12.59, and P=0.05).

Helicoverpa armigera (Hübner, 1808) shows an increase in its impact on peas in May. The empirical results and approximated indicators for this species also exhibited a reliable level (tf=10.22; tst=16.92, and P=0.05). The second peak occurs in the alfalfa agrocenosis, with reliable results (tf=2.98; tst=16.92, and P=0.05).

Mualliflar haqida

  • , Namangan davlat universiteti

    Namangan davlat universiteti katta o‘qituvchisi, b.f.f.d. (PhD);

  • , Fergana Stete University

    Farg‘ona davlat universiteti professori, b.f.d.;

  • , Fergana Stete University

    Farg‘ona davlat universiteti doktoranti, b.f.n., dotsent;

  • , Fergana Stete University

    Farg‘ona davlat universiteti o‘qituvchisi

Adabiyotlar

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Yuklab olishlar

Nashr etilgan

2024-11-11

Son

№ 5 (2024): FarDU.Ilmiy xabarlar jurnali (Aniq va tabiiy fanlar)

Bo‘lim

Biology

Litsenziya

Mualliflik huquqi (c) 2024 Scientific journal of the Fergana State University

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