The Experts below are selected from a list of 9417 Experts worldwide ranked by ideXlab platform

Palm Pollinating Weevil - One of the best experts on this subject based on the ideXlab platform.

  • EFFECT OF Bt PRODUCTS, LEPCON-1, BAFOG-1
    2012
    Co-Authors: Mohd Najib Ahmad, Siti Ramlah, Ahmad Ali, Mohamed Mazmira, Mohd Masri, Available Mohd, Najib Ahmad, Palm Pollinating Weevil
    Abstract:

    MOHD BASRI WAHID* The effects of Bacillus thuringiensis products, Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC), on the oil palm pollinating weevil, Elaeidobius kamerunicus, and Beneficial Insects, especially parasitoids, were studied. For pollinating weevils, oil palm male spikelets with weevils were treated by spraying with Lepcon-1 an

Mohd Najib Ahmad - One of the best experts on this subject based on the ideXlab platform.

  • EFFECT OF Bt PRODUCTS, LEPCON-1, BAFOG-1
    2012
    Co-Authors: Mohd Najib Ahmad, Siti Ramlah, Ahmad Ali, Mohamed Mazmira, Mohd Masri, Available Mohd, Najib Ahmad, Palm Pollinating Weevil
    Abstract:

    MOHD BASRI WAHID* The effects of Bacillus thuringiensis products, Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC), on the oil palm pollinating weevil, Elaeidobius kamerunicus, and Beneficial Insects, especially parasitoids, were studied. For pollinating weevils, oil palm male spikelets with weevils were treated by spraying with Lepcon-1 an

  • effect of bt products lepcon 1 bafog 1 s and ecobac 1 ec against the oil palm pollinating weevil elaeidobius kamerunicus and Beneficial Insects associated with cassia cobanensis
    Journal of Oil Palm Research, 2012
    Co-Authors: Mohd Najib Ahmad, Mohamed Mazmira, Mohd Masri, Mohd Basri Wahid
    Abstract:

    The effects of Bacillus thuringiensis products, Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC), on the oil palm pollinating weevil, Elaeidobius kamerunicus, and Beneficial Insects, especially parasitoids, were studied. For pollinating weevils, oil palm male spikelets with weevils were treated by spraying with Lepcon-1 and Ecobac-1 (EC) at five different concentrations, ranging from 5.2 × 10 7 to 5.2 × 10 11 cfu ml -1 for Lepcon-1, and 7.34 × 10 7 to 7.34 × 10 11 cfu ml -1 for Ecobac-1 (EC). For Bafog-1 (S), male spikelets with weevils were fogged at a dose of 7.7 × 10 11 cfu ml ml -1 . The Bt products Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) were safe for E. kamerunicus. Direct spraying of Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) at the highest concentrations caused 13%, 10% and 11% corrected mortality at nine days after treatment (DAT), respectively. Cypermethrin was toxic to the pollinating weevils as it killed 100% of the weevils at as early as five DAT. Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) were also harmless to Beneficial Insects. Application of these products by spraying at the highest concentrations resulted in low mortality of the Beneficial Insects, ranging from 8% to 13%. Cypermethrin was toxic to the parasitoids as spraying of the chemical at 7.5% w/w killed 100% of the Beneficial Insects at as early as five DAT. The laboratory study showed that Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) were safe for the oil palm pollinating weevils and Beneficial Insects and, therefore, they are recommended for use in the integrated control of bagworms in oil palm.

  • effect of bacillus thuringiensis terakil 1 and teracon 1 against oil palm pollinator elaeidobius kamerunicus and Beneficial Insects associated with cassia cobanensis
    Journal of Oil Palm Research, 2009
    Co-Authors: Mohd Najib Ahmad, Mohamed Mazmira, A Siti A Ramlah, Mohd Basri Wahid
    Abstract:

    A laboratory study on the effect of Bacillus thuringiensis (Bt) product, Terakil-1 ® and Teracon-1 ® on oil palm pollinating weevil, Elaeidobius kamerunicus and Beneficial Insects such as predators and parasitoids was studied to evaluate the safety and specificity of Bt product against non-target organisms in particular the Beneficial Insects as compared to chemical. The male spikelets were sprayed with Terakil-1 ® and Teracon-1 ® at different doses, ranging from 3.7x10 7 cfu ml -1 -3.7x10 11 cfu ml -1 and 0.1124 µg ml -1 - 1124 µg ml -1 , respectively. At five days after treatment (DAT), Terakil-1 ® and Teracon-1 ® being target specific at dose of C5, 3.7x10 11 cfu ml -1 and 11.24 µg ml -1 , resulted in 21% and 25% mortality of Beneficial Insects, respectively. Whereas, at seven DAT, Terakil-1 ® and Teracon-1 ® being a safe Bt products at dose of C5, 3.7x10 11 cfu ml -1 and 11.24 µg ml -1 , resulted in 22% and 23% corrected mortality of Beneficial Insects, respectively. Cypermethrin at 5.5% w/w as a chemical control led to 100% corrected mortality of Beneficial Insects at five DAT. As for oil palm pollinating weevil, E. kamerunicus, Terakil-1 ® and Teracon-1 ® being a safe and environmental-friendly products, each resulted in 26% and 33% mortality of E. kamerunicus at seven DAT at 100-fold higher dose than the recommended dose of C3, 3.7x10 9 cfu ml -1 and 11.24 µg ml -1 . Whereas, at seven DAT, Terakil-1 ® and Teracon-1 ® being a safe Bt products at dose of C5, 3.7x10 11 cfu ml -1 and 1124 µg ml -1 , resulted in 14% and 16% corrected mortality of E. kamerunicus, respectively. At five to seven DAT, the mean mortality of the adult E. kamerunicus subjected to the five different doses, 3.7x10 7 cfu ml -1 to 3.7x10 11 cfu ml -1 and 0.1124 µg ml -1 - 1124 µg ml -1 of Terakil-1 ® and Teracon-1 ® , respectively was not significantly different at P=0.05 when tested using Duncan's Multiple Range Test, implying that even at very high doses, Bt products were equally safe to the weevils. Cypermethrin was significantly toxic to pollinating weevils as compared to high doses of Terakil-1 ® and Teracon-1 ® . Unlike chemicals, B. thuringiensis, Terakil-1 ® and Teracon-1 ® were found to be safe for Beneficial Insects under the oil palm and is therefore recommended for integrated control of bagworm under oil palm.

Mohd Basri Wahid - One of the best experts on this subject based on the ideXlab platform.

  • effect of bt products lepcon 1 bafog 1 s and ecobac 1 ec against the oil palm pollinating weevil elaeidobius kamerunicus and Beneficial Insects associated with cassia cobanensis
    Journal of Oil Palm Research, 2012
    Co-Authors: Mohd Najib Ahmad, Mohamed Mazmira, Mohd Masri, Mohd Basri Wahid
    Abstract:

    The effects of Bacillus thuringiensis products, Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC), on the oil palm pollinating weevil, Elaeidobius kamerunicus, and Beneficial Insects, especially parasitoids, were studied. For pollinating weevils, oil palm male spikelets with weevils were treated by spraying with Lepcon-1 and Ecobac-1 (EC) at five different concentrations, ranging from 5.2 × 10 7 to 5.2 × 10 11 cfu ml -1 for Lepcon-1, and 7.34 × 10 7 to 7.34 × 10 11 cfu ml -1 for Ecobac-1 (EC). For Bafog-1 (S), male spikelets with weevils were fogged at a dose of 7.7 × 10 11 cfu ml ml -1 . The Bt products Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) were safe for E. kamerunicus. Direct spraying of Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) at the highest concentrations caused 13%, 10% and 11% corrected mortality at nine days after treatment (DAT), respectively. Cypermethrin was toxic to the pollinating weevils as it killed 100% of the weevils at as early as five DAT. Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) were also harmless to Beneficial Insects. Application of these products by spraying at the highest concentrations resulted in low mortality of the Beneficial Insects, ranging from 8% to 13%. Cypermethrin was toxic to the parasitoids as spraying of the chemical at 7.5% w/w killed 100% of the Beneficial Insects at as early as five DAT. The laboratory study showed that Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) were safe for the oil palm pollinating weevils and Beneficial Insects and, therefore, they are recommended for use in the integrated control of bagworms in oil palm.

  • effect of bacillus thuringiensis terakil 1 and teracon 1 against oil palm pollinator elaeidobius kamerunicus and Beneficial Insects associated with cassia cobanensis
    Journal of Oil Palm Research, 2009
    Co-Authors: Mohd Najib Ahmad, Mohamed Mazmira, A Siti A Ramlah, Mohd Basri Wahid
    Abstract:

    A laboratory study on the effect of Bacillus thuringiensis (Bt) product, Terakil-1 ® and Teracon-1 ® on oil palm pollinating weevil, Elaeidobius kamerunicus and Beneficial Insects such as predators and parasitoids was studied to evaluate the safety and specificity of Bt product against non-target organisms in particular the Beneficial Insects as compared to chemical. The male spikelets were sprayed with Terakil-1 ® and Teracon-1 ® at different doses, ranging from 3.7x10 7 cfu ml -1 -3.7x10 11 cfu ml -1 and 0.1124 µg ml -1 - 1124 µg ml -1 , respectively. At five days after treatment (DAT), Terakil-1 ® and Teracon-1 ® being target specific at dose of C5, 3.7x10 11 cfu ml -1 and 11.24 µg ml -1 , resulted in 21% and 25% mortality of Beneficial Insects, respectively. Whereas, at seven DAT, Terakil-1 ® and Teracon-1 ® being a safe Bt products at dose of C5, 3.7x10 11 cfu ml -1 and 11.24 µg ml -1 , resulted in 22% and 23% corrected mortality of Beneficial Insects, respectively. Cypermethrin at 5.5% w/w as a chemical control led to 100% corrected mortality of Beneficial Insects at five DAT. As for oil palm pollinating weevil, E. kamerunicus, Terakil-1 ® and Teracon-1 ® being a safe and environmental-friendly products, each resulted in 26% and 33% mortality of E. kamerunicus at seven DAT at 100-fold higher dose than the recommended dose of C3, 3.7x10 9 cfu ml -1 and 11.24 µg ml -1 . Whereas, at seven DAT, Terakil-1 ® and Teracon-1 ® being a safe Bt products at dose of C5, 3.7x10 11 cfu ml -1 and 1124 µg ml -1 , resulted in 14% and 16% corrected mortality of E. kamerunicus, respectively. At five to seven DAT, the mean mortality of the adult E. kamerunicus subjected to the five different doses, 3.7x10 7 cfu ml -1 to 3.7x10 11 cfu ml -1 and 0.1124 µg ml -1 - 1124 µg ml -1 of Terakil-1 ® and Teracon-1 ® , respectively was not significantly different at P=0.05 when tested using Duncan's Multiple Range Test, implying that even at very high doses, Bt products were equally safe to the weevils. Cypermethrin was significantly toxic to pollinating weevils as compared to high doses of Terakil-1 ® and Teracon-1 ® . Unlike chemicals, B. thuringiensis, Terakil-1 ® and Teracon-1 ® were found to be safe for Beneficial Insects under the oil palm and is therefore recommended for integrated control of bagworm under oil palm.

Mohamed Mazmira - One of the best experts on this subject based on the ideXlab platform.

  • EFFECT OF Bt PRODUCTS, LEPCON-1, BAFOG-1
    2012
    Co-Authors: Mohd Najib Ahmad, Siti Ramlah, Ahmad Ali, Mohamed Mazmira, Mohd Masri, Available Mohd, Najib Ahmad, Palm Pollinating Weevil
    Abstract:

    MOHD BASRI WAHID* The effects of Bacillus thuringiensis products, Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC), on the oil palm pollinating weevil, Elaeidobius kamerunicus, and Beneficial Insects, especially parasitoids, were studied. For pollinating weevils, oil palm male spikelets with weevils were treated by spraying with Lepcon-1 an

  • effect of bt products lepcon 1 bafog 1 s and ecobac 1 ec against the oil palm pollinating weevil elaeidobius kamerunicus and Beneficial Insects associated with cassia cobanensis
    Journal of Oil Palm Research, 2012
    Co-Authors: Mohd Najib Ahmad, Mohamed Mazmira, Mohd Masri, Mohd Basri Wahid
    Abstract:

    The effects of Bacillus thuringiensis products, Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC), on the oil palm pollinating weevil, Elaeidobius kamerunicus, and Beneficial Insects, especially parasitoids, were studied. For pollinating weevils, oil palm male spikelets with weevils were treated by spraying with Lepcon-1 and Ecobac-1 (EC) at five different concentrations, ranging from 5.2 × 10 7 to 5.2 × 10 11 cfu ml -1 for Lepcon-1, and 7.34 × 10 7 to 7.34 × 10 11 cfu ml -1 for Ecobac-1 (EC). For Bafog-1 (S), male spikelets with weevils were fogged at a dose of 7.7 × 10 11 cfu ml ml -1 . The Bt products Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) were safe for E. kamerunicus. Direct spraying of Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) at the highest concentrations caused 13%, 10% and 11% corrected mortality at nine days after treatment (DAT), respectively. Cypermethrin was toxic to the pollinating weevils as it killed 100% of the weevils at as early as five DAT. Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) were also harmless to Beneficial Insects. Application of these products by spraying at the highest concentrations resulted in low mortality of the Beneficial Insects, ranging from 8% to 13%. Cypermethrin was toxic to the parasitoids as spraying of the chemical at 7.5% w/w killed 100% of the Beneficial Insects at as early as five DAT. The laboratory study showed that Lepcon-1, Bafog-1 (S) and Ecobac-1 (EC) were safe for the oil palm pollinating weevils and Beneficial Insects and, therefore, they are recommended for use in the integrated control of bagworms in oil palm.

  • effect of bacillus thuringiensis terakil 1 and teracon 1 against oil palm pollinator elaeidobius kamerunicus and Beneficial Insects associated with cassia cobanensis
    Journal of Oil Palm Research, 2009
    Co-Authors: Mohd Najib Ahmad, Mohamed Mazmira, A Siti A Ramlah, Mohd Basri Wahid
    Abstract:

    A laboratory study on the effect of Bacillus thuringiensis (Bt) product, Terakil-1 ® and Teracon-1 ® on oil palm pollinating weevil, Elaeidobius kamerunicus and Beneficial Insects such as predators and parasitoids was studied to evaluate the safety and specificity of Bt product against non-target organisms in particular the Beneficial Insects as compared to chemical. The male spikelets were sprayed with Terakil-1 ® and Teracon-1 ® at different doses, ranging from 3.7x10 7 cfu ml -1 -3.7x10 11 cfu ml -1 and 0.1124 µg ml -1 - 1124 µg ml -1 , respectively. At five days after treatment (DAT), Terakil-1 ® and Teracon-1 ® being target specific at dose of C5, 3.7x10 11 cfu ml -1 and 11.24 µg ml -1 , resulted in 21% and 25% mortality of Beneficial Insects, respectively. Whereas, at seven DAT, Terakil-1 ® and Teracon-1 ® being a safe Bt products at dose of C5, 3.7x10 11 cfu ml -1 and 11.24 µg ml -1 , resulted in 22% and 23% corrected mortality of Beneficial Insects, respectively. Cypermethrin at 5.5% w/w as a chemical control led to 100% corrected mortality of Beneficial Insects at five DAT. As for oil palm pollinating weevil, E. kamerunicus, Terakil-1 ® and Teracon-1 ® being a safe and environmental-friendly products, each resulted in 26% and 33% mortality of E. kamerunicus at seven DAT at 100-fold higher dose than the recommended dose of C3, 3.7x10 9 cfu ml -1 and 11.24 µg ml -1 . Whereas, at seven DAT, Terakil-1 ® and Teracon-1 ® being a safe Bt products at dose of C5, 3.7x10 11 cfu ml -1 and 1124 µg ml -1 , resulted in 14% and 16% corrected mortality of E. kamerunicus, respectively. At five to seven DAT, the mean mortality of the adult E. kamerunicus subjected to the five different doses, 3.7x10 7 cfu ml -1 to 3.7x10 11 cfu ml -1 and 0.1124 µg ml -1 - 1124 µg ml -1 of Terakil-1 ® and Teracon-1 ® , respectively was not significantly different at P=0.05 when tested using Duncan's Multiple Range Test, implying that even at very high doses, Bt products were equally safe to the weevils. Cypermethrin was significantly toxic to pollinating weevils as compared to high doses of Terakil-1 ® and Teracon-1 ® . Unlike chemicals, B. thuringiensis, Terakil-1 ® and Teracon-1 ® were found to be safe for Beneficial Insects under the oil palm and is therefore recommended for integrated control of bagworm under oil palm.

Alejandro Tena - One of the best experts on this subject based on the ideXlab platform.

  • neonicotinoids in excretion product of phloem feeding Insects kill Beneficial Insects
    Proceedings of the National Academy of Sciences of the United States of America, 2019
    Co-Authors: Miguel Calvoagudo, Alberto Urbaneja, Joel Gonzalezcabrera, Yolanda Pico, Pau Calatayudvernich, Marcel Dicke, Alejandro Tena
    Abstract:

    Pest control in agriculture is mainly based on the application of insecticides, which may impact nontarget Beneficial organisms leading to undesirable ecological effects. Neonicotinoids are among the most widely used insecticides. However, they have important negative side effects, especially for pollinators and other Beneficial Insects feeding on nectar. Here, we identify a more accessible exposure route: Neonicotinoids reach and kill Beneficial Insects that feed on the most abundant carbohydrate source for Insects in agroecosystems, honeydew. Honeydew is the excretion product of phloem-feeding hemipteran Insects such as aphids, mealybugs, whiteflies, and psyllids. We allowed parasitic wasps and pollinating hoverflies to feed on honeydew from hemipterans feeding on trees treated with thiamethoxam or imidacloprid, the most commonly used neonicotinoids. LC-MS/MS analyses demonstrated that both neonicotinoids were present in honeydew. Honeydew with thiamethoxam was highly toxic to both species of Beneficial Insects, and honeydew with imidacloprid was moderately toxic to hoverflies. Collectively, our data provide strong evidence for honeydew as a route of insecticide exposure that may cause acute or chronic deleterious effects on nontarget organisms. This route should be considered in future environmental risk assessments of neonicotinoid applications.