Biological efficacy of neem extract (Azadirachta indica L.) In the fight against aphids and mites on cucumbers in protected space
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2024-04-19 16:16
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632.951:634.667 (1)
Boli ale plantelor. Dăunători și organisme vătămătoare pentru plante. Protejarea plantelor (999)
Diferite fructe tropicale și subtropicale (16)
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GUSAN, Ana, SÎTNIC, Victor, POPA, Alexei, SAVRANSCHII, Denis. Biological efficacy of neem extract (Azadirachta indica L.) In the fight against aphids and mites on cucumbers in protected space. In: Ştiinţa în Nordul Republicii Moldova: realizări, probleme, perspective, Ed. 7, 19-20 mai 2023, Bălți. Balti, Republic of Moldova: Casa Editorial-Poligrafică „Bons Offices”, 2023, Ediția 7, pp. 59-62. ISBN 978-9975-81-128-6.
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Ştiinţa în Nordul Republicii Moldova: realizări, probleme, perspective
Ediția 7, 2023
Conferința "Ştiinţa în Nordul Republicii Moldova: realizări, probleme, perspective"
7, Bălți, Moldova, 19-20 mai 2023

Biological efficacy of neem extract (Azadirachta indica L.) In the fight against aphids and mites on cucumbers in protected space

CZU: 632.951:634.667

Pag. 59-62

Gusan Ana, Sîtnic Victor, Popa Alexei, Savranschii Denis
 
Institute of Genetics, Physiology and Plant Protection, MSU
 
 
Disponibil în IBN: 7 iunie 2023


Rezumat

The article presents the results of pesticidal activity study of product elaborated on the neem oil base. Neem extract (Azadirachta indica L.) is a product that can be used as an alternative to combat pests such as some species of insects and mites. In the present study, we aimed to evaluate the biological efficacy of neem extract in combating aphids and mites in cucumber culture. The experiments were carried out in the experimental greenhouse of the IGFPP. Four experimental variants of three repetitions each were used in the research. Thus, the experiment scheme included two different concentrations of neem oil, the standard (Pelecol) and the untreated control. The experimental parcels were located according to the randomized block method. During the vegetation period, 2 treatments were carried out. The term of treatment was determined according to the biological characteristics, the numerical density and the spread degree of the pests. After two treatments with an interval of ten days between them it was determined that the higher concentration of neem oil showed higher biological efficacy compared to the lower one. This fact is due to the active substance of the extract (Azadirachtin), which reduces the feeding of insects and acts as a repellent against aphids, which stop feeding and populating the treated plant. However, after carrying out the 2nd treatment on the cucumber plants, mites appeared, the biological effectiveness of the extract in combating them being lower. In conclusion, it can be mentioned that neem extract (Azadirachta indica L.) represents a viable alternative for the control of pests (especially aphids) of cucumber plants in protected space.

Cuvinte-cheie
aphids, spider mites, treatment, effectiveness, neem extract, cucumbers