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Effect of sublethal doses of abamectin on demographic traits of tomato leafminer Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae)

100%

Zibaee I. , Esmaeily M.

tom 57

nr 3

The tomato leafminer, Tuta absoluta is a serious pest of tomato crops worldwide. In this study the effect of sublethal concentrations of abamectin (at 10 and 30% lethal concentrations, LC10 and LC30) was investigated on developmental and reproduction parameters of the tomato leafminer Tuta absoluta. Lethal concentrations were estimated by leaf dip bioassay on the fourth instar larvae of the T. absoluta that, LC50, LC30 and LC10 were 0.23, 0.15 and 0.12 mg · l–1, respectively. The sublethal concentrations led to significant decreases in adult emergence, the percentage of pupation of the parent generation, fecundity and adult longevity compared to the control. Sublethal concentrations significantly decreased the net reproductive rate (R0), intrinsic rate of increase (r), finite rate of increase (λ), and gross reproduction rate (GRR). There was a significant decrease in the time to egg developmental and doubling time (DT) of T. absoluta. However, sublethal concentrations of abamectin had no significant effects on the percentage of pupation, larva, prepupa and pupa developmental periods, hatchability and sex ratio of offspring. The results of this study indicated that sublethal concentrations of abamectin could influence some biological parameters of T. absoluta. The results could also be helpful for making better management decisions for controlling the tomato leafminer.

Zagrozenie upraw szkolkarskich roslin ozdobnych przez wegorka chryzantemowca i proba jego zwalczania

67%

Soika G. , Labanowski G.

Progress in Plant Protection

2003

tom 43

nr 2

936-939

Wpływ wybranych związków chemicznych stosowanych w formie opryskiwania i zapraw nasiennych na uszkodzenia roślin przez Arion lusitanicus Mabille

59%

Jaskulska M. , Kaluski T. , Kozlowski J. , Kozlowska M.

Progress in Plant Protection

2010

tom 50

nr 1

The mini-plots experiment was made on the effectiveness of selected chemicals to reduce damage to Chinese cabbage caused by Arion lusitanicus slugs. Two active substances used as spray, seed coating and molluscicides were tested. Effective action in reducing plant damage by slugs showed methiocarb and abamectin used as spray. The damage was reduced also by abamectin used as a seed coating. It was found that the effectiveness of methiocarb and abamectin, applied in the form of spray, was comparable to the efficiency of molluscicide Mesurol Alimax 02 RB (2% methiocarb).

Patogeny grzybowe i abamektyna w biologicznym zwalczaniu szkodnikow szklarniowych

51%

Fiedler Z. , Sosnowska D. , Baranowski T.

Progress in Plant Protection

2002

tom 42

nr 2

420-423