Open AccessTest of some insecticides for Tanymecus dilaticollis Gyll. control, in organic agriculture conditions
Author(s) -
Maria Toader,
EMIL GEORGESCU,
ALINA MARIA IONESCU,
Cosmin Șonea
Publication year - 2020
Publication title -
romanian biotechnological letters
Language(s) - English
Resource type - Journals
eISSN - 2248-3942
pISSN - 1224-5984
DOI - 10.25083/rbl/25.6/2070.2078
Subject(s) - spinosad , agriculture , weevil , neem oil , organic farming , agronomy , toxicology , pest analysis , biology , pest control , pesticide , environmental science , horticulture , ecology
The research focus to study the effectiveness of some active substances of insecticides for the control of maize leaf weevil (Tanymecus dilaticollis) in the organic agriculture conditions at the Plant Protection Laboratory of National Agricultural Research and Development Institute Fundulea (NARDI). In experiment, were used some permitted active substances in organic farming, according to Annex 2 of Regulation 889/2008 for the pests control, respectively: neem oil, spinosad and Bacillus thuringiensis for treatment of seeds and the same products applied in vegetation period of maize plant. The highest value of saved plants was 82.78% for treatment of maize seeds with neem oil and for spinosad applied in vegetation with 79.78%. The attack intensity had the highest level in the untreatment variant (5.90) and the lowest was in the variant of seed treated with neem oil (3.72). In conclusion, this experiment demonstrates the good efficacy of these products, that could be an alternative method for pest control in organic farming, in Romania.