Susceptibility and Resistant of Difference Host Varieties of Oil Palm and Coconut Palm Towards Pest, Rhinoceros Beetle (Oryctes Rhinoceros)

In the current study, population dynamics of males, females, and total males and females of Rhinoceros Beetle (Oryctes rhinoceros), namely, DXP PPNJ 1 and DXP PPNJ 2, was evaluated in different host varieties of oil palms and coconut palms of Ladang Penyelidikan Segamat in Johor State of Malaysia. Ethyl 4-methyloctanote had been used as a pheromone aggregation in this study. The results clearly indicated that population dynamics of Oryctes Rhinoceros (total male and female) in oil palms and coconut palms has significant difference within the whole sampling period. Based on cumulative Oryctes Rhinoceros caught, varieties of DXP PPNJ 1 and DXP PPNJ 2 had significant effects on its male and female population. MYD inclined more towards the population of Oryctes Rhinoceros male, female and total male and female, giving more impacts, when ccompared with MRD and Tagnanan. Both crops of same species/family were not recommended for planting in that area, because it facees similar problems of direct Oryctes Rhinoceros attacks, obviously affecting the yield. Therefore, MRD and Tagnanan, considered to be a cross-variety, had been recommended to farmers. Instead of having higher yields, farmers have lesser chances of severe attacks by Oryctes Rhinoceros, within the same time period

Susceptibility and Resistant of Difference Host Varieties of Oil Palm and Coconut Palm Towards Pest, Rhinoceros Beetle (Oryctes Rhinoceros)

In the current study, population dynamics of males, females, and total males and females of Rhinoceros Beetle (Oryctes rhinoceros), namely, DXP PPNJ 1 and DXP PPNJ 2, was evaluated in different host varieties of oil palms and coconut palms of Ladang Penyelidikan Segamat in Johor State of Malaysia. Ethyl 4-methyloctanote had been used as a pheromone aggregation in this study. The results clearly indicated that population dynamics of Oryctes Rhinoceros (total male and female) in oil palms and coconut palms has significant difference within the whole sampling period. Based on cumulative Oryctes Rhinoceros caught, varieties of DXP PPNJ 1 and DXP PPNJ 2 had significant effects on its male and female population. MYD inclined more towards the population of Oryctes Rhinoceros male, female and total male and female, giving more impacts, when ccompared with MRD and Tagnanan. Both crops of same species/family were not recommended for planting in that area, because it facees similar problems of direct Oryctes Rhinoceros attacks, obviously affecting the yield. Therefore, MRD and Tagnanan, considered to be a cross-variety, had been recommended to farmers. Instead of having higher yields, farmers have lesser chances of severe attacks by Oryctes Rhinoceros, within the same time period

An Evaluation of Mortality of Sitophilus Oryzae Treated with Selected Insecticides Via Filter Paper and Food Impregnated Method

Laboratory bioassay were conducted at University Putra Malaysia in order to evaluate the toxicity and the antifeedant activity of five insecticides which is Cypermethrin, Malathion, Prevathon, Rotenone and also Spinosad against the adult of S.oryzae by using the filter paper impregnation and food impregnation method for 1, 3, 5 and 7 days. Rotenone found to be effectives in toxicity via filter paper impregnation method based on the LC50 values with 0.003% while the other was 0.04%, 0.017%, 0.106% and 1.109% were indicated Spinosad, Malathion, Cypermethrin and Prevathon. The less effective was Prevathon. Food impregnation method showed that the effective insecticides was Spinosad with LC50 values 0.001%. The lowest was Prevathon with LC50 values 5.776%. In addition, the other insecticides showed LC50 values was 0.003%, 0.05% and 0.875% which indicated Malathion, Cypermethrin and Rotenone. For the antifeedant activity via feeding deterrent index (FDI), it showed that, the lowest FDI was Spinosad with 0.535% while the highest was Rotenone with 1.756%. The other showed 0.63%, 0.869% and 0.949% indicated Malathion, Cypermethrin and Prevathon respectively. As conclusion, most effective insecticides against adult of S.oryzae was Spinosad because able to control the insect at the prepared concentration in both method

An Evaluation of Mortality of Sitophilus Oryzae Treated with Selected Insecticides Via Filter Paper and Food Impregnated Method

Laboratory bioassay were conducted at University Putra Malaysia in order to evaluate the toxicity and the antifeedant activity of five insecticides which is Cypermethrin, Malathion, Prevathon, Rotenone and also Spinosad against the adult of S.oryzae by using the filter paper impregnation and food impregnation method for 1, 3, 5 and 7 days. Rotenone found to be effectives in toxicity via filter paper impregnation method based on the LC50 values with 0.003% while the other was 0.04%, 0.017%, 0.106% and 1.109% were indicated Spinosad, Malathion, Cypermethrin and Prevathon. The less effective was Prevathon. Food impregnation method showed that the effective insecticides was Spinosad with LC50 values 0.001%. The lowest was Prevathon with LC50 values 5.776%. In addition, the other insecticides showed LC50 values was 0.003%, 0.05% and 0.875% which indicated Malathion, Cypermethrin and Rotenone. For the antifeedant activity via feeding deterrent index (FDI), it showed that, the lowest FDI was Spinosad with 0.535% while the highest was Rotenone with 1.756%. The other showed 0.63%, 0.869% and 0.949% indicated Malathion, Cypermethrin and Prevathon respectively. As conclusion, most effective insecticides against adult of S.oryzae was Spinosad because able to control the insect at the prepared concentration in both method