Kavita Parihar - Academia.edu (original) (raw)

Papers by Kavita Parihar

A pot experiment was conducted to evaluate the efficacy of Pochonia chlamydosporia, oil cakes of ... more A pot experiment was conducted to evaluate the efficacy of Pochonia chlamydosporia, oil cakes of neem, mustard and cotton and nematicide (carbofuran) in the management of root knot nematode, Meloidogyne javanica infecting brinjal under glasshouse conditions. All the treatments were effectively suppressed the nematode population and kept the infection at significantly low levels. Among oilcakes individual treatment of neem was more effective than other oil cakes in controlling M. javanica, whereas among combined treatment, neem cake+P. chlamydosporia was more effective in the management of M. javanica followed by mustard cake+P. chlamydosporia and cotton cake+P. chlamydosporia. However, the efficacy of P. chlamydosporia increased in the presence of oilcakes. Oilcakes when combined with nematicide (carbofuran) showed best results in terms of plant growth parameters, reduce root knot diseases and nematode multiplication after combining with P. chlamydosporia. These organic amendments are capable of producing secondary metabolites, which have an allelopathic effect and develop resistance in plants. This approach is non hazardous, cheaper and easily available to the farmers.

The antagonistic effect of five organic additives (fresh chopped leaves) of various latex bearing... more The antagonistic effect of five organic additives (fresh chopped leaves) of various latex bearing plant species were applied against Meloidogyne javanica in bottlegourd. The two doses (50&100g) of organic additives were treated with 1 kg soil separately, filled in pots under a glasshouse trial to determine nematicidal effect against root-knot infections.

Bottle gourd, Lagenaria siceraria (Molina) Standl. (Family-Cucurbitaceae) is popular vegetable gr... more Bottle gourd, Lagenaria siceraria (Molina) Standl. (Family-Cucurbitaceae) is popular vegetable grown almost all the year around and having medicinal value.This crop is affected by root knot nematode.The objective of study was to evaluate, the antagonistic effect of organic additives against root-knot nematode (Meloidogyne javanica) infecting bottle gourd, under glasshouse conditions. Fresh chopped leaves of five different plant species were mixed with soil before inoculation of bottle gourd with second stage juveniles (J2s) of root-knot nematode. Soil treated with Datura stramonium (100g) leaves were found most effective in reducing the reproductive potential of populations of root-knot nematode and increased chlorophyll content and plant growth parameters viz., length, fresh and dry weight of shoot and root as compared to other plant species viz., Argemone mexicana, Lantana camara, Parthenium hysterophorus and Withania somnifera. In conclusion it can be retrieved that the use of organic additives can reduce root-knot diseases and nematode multiplication and henceforth enhance the plant growth parameters.

The experiment was conducted to test the nematostatic potential of aqueous extracts of different ... more The experiment was conducted to test the nematostatic potential of aqueous extracts of different plant parts viz., leaves ,flowers and seeds of both Calotropis procera and Thuja orientalis. The results revealed that standard aqueous concentration were found highly deleterious to J2 of Meloidogyne incognita either compared with other aqueous extracts or control (Distilled water). The per cent mortality were found maximum in the standard concentration of aqueous plant extracts followed by other aqueous extracts. Similar results were also found in case of hatching inhibition of J2 of M. incognita. However, S/100 concentration of all parts were found least effective as compared to S, S/2, S/10. The per cent mortality and percent inhibition increased with increase in the strength of aqueous extracts. Therefore, the higher concentration of plant parts of C. procera and T. orientalis showed more potential, nematostatic properties as compared to lower concentration.

The use of plant parts as organic amendments is non-hazardous in nature and retain the sustainabi... more The use of plant parts as organic amendments is non-hazardous in nature and retain the sustainability of environment without showing any kind of environmental pollution. Hence the present investigations were undertaken. The efficacy of organic amendments and nematicides in the management of root-knot nematode Meloidogyne incognita (Kofoid and White) Chitwood on eggplant,Solanum melongena L. cv."Krishna" were examined under glasshouse conditions. Organic additives included chopped leaves, flowers and seeds of four test plants viz., Azadirachta indica, Lantana camara, Calotropis procera and Thuja orientalis were applied alone and in combination with two nematicides viz.,Carbofuran/Furadan-3G and Phorate/Thimet-15G.Results revealed that all the treatments significantly improved plant growth parameters and reduced root knot development in comparison to untreated control .Among the tested organic additives chopped green leaves of A. indica(50g) with carbofuran(1g) added to the soil were found most effective to increase in plant growth parameters including plant height,fresh weight, number of leaves, number of flowers and highest reduction in root-knot development whereas the lowest reduction was observed in plants treated with the leaves of T. orientalis (50g).

A pot experiment was conducted to evaluate the efficacy of Pochonia chlamydosporia, oil cakes of ... more A pot experiment was conducted to evaluate the efficacy of Pochonia chlamydosporia, oil cakes of neem, mustard and cotton and nematicide (carbofuran) in the management of root knot nematode, Meloidogyne javanica infecting brinjal under glasshouse conditions. All the treatments were effectively suppressed the nematode population and kept the infection at significantly low levels. Among oilcakes individual treatment of neem was more effective than other oil cakes in controlling M. javanica, whereas among combined treatment, neem cake+P. chlamydosporia was more effective in the management of M. javanica followed by mustard cake+P. chlamydosporia and cotton cake+P. chlamydosporia. However, the efficacy of P. chlamydosporia increased in the presence of oilcakes. Oilcakes when combined with nematicide (carbofuran) showed best results in terms of plant growth parameters, reduce root knot diseases and nematode multiplication after combining with P. chlamydosporia. These organic amendments are capable of producing secondary metabolites, which have an allelopathic effect and develop resistance in plants. This approach is non hazardous, cheaper and easily available to the farmers.

The antagonistic effect of five organic additives (fresh chopped leaves) of various latex bearing... more The antagonistic effect of five organic additives (fresh chopped leaves) of various latex bearing plant species were applied against Meloidogyne javanica in bottlegourd. The two doses (50&100g) of organic additives were treated with 1 kg soil separately, filled in pots under a glasshouse trial to determine nematicidal effect against root-knot infections.

Bottle gourd, Lagenaria siceraria (Molina) Standl. (Family-Cucurbitaceae) is popular vegetable gr... more Bottle gourd, Lagenaria siceraria (Molina) Standl. (Family-Cucurbitaceae) is popular vegetable grown almost all the year around and having medicinal value.This crop is affected by root knot nematode.The objective of study was to evaluate, the antagonistic effect of organic additives against root-knot nematode (Meloidogyne javanica) infecting bottle gourd, under glasshouse conditions. Fresh chopped leaves of five different plant species were mixed with soil before inoculation of bottle gourd with second stage juveniles (J2s) of root-knot nematode. Soil treated with Datura stramonium (100g) leaves were found most effective in reducing the reproductive potential of populations of root-knot nematode and increased chlorophyll content and plant growth parameters viz., length, fresh and dry weight of shoot and root as compared to other plant species viz., Argemone mexicana, Lantana camara, Parthenium hysterophorus and Withania somnifera. In conclusion it can be retrieved that the use of organic additives can reduce root-knot diseases and nematode multiplication and henceforth enhance the plant growth parameters.

The experiment was conducted to test the nematostatic potential of aqueous extracts of different ... more The experiment was conducted to test the nematostatic potential of aqueous extracts of different plant parts viz., leaves ,flowers and seeds of both Calotropis procera and Thuja orientalis. The results revealed that standard aqueous concentration were found highly deleterious to J2 of Meloidogyne incognita either compared with other aqueous extracts or control (Distilled water). The per cent mortality were found maximum in the standard concentration of aqueous plant extracts followed by other aqueous extracts. Similar results were also found in case of hatching inhibition of J2 of M. incognita. However, S/100 concentration of all parts were found least effective as compared to S, S/2, S/10. The per cent mortality and percent inhibition increased with increase in the strength of aqueous extracts. Therefore, the higher concentration of plant parts of C. procera and T. orientalis showed more potential, nematostatic properties as compared to lower concentration.

The use of plant parts as organic amendments is non-hazardous in nature and retain the sustainabi... more The use of plant parts as organic amendments is non-hazardous in nature and retain the sustainability of environment without showing any kind of environmental pollution. Hence the present investigations were undertaken. The efficacy of organic amendments and nematicides in the management of root-knot nematode Meloidogyne incognita (Kofoid and White) Chitwood on eggplant,Solanum melongena L. cv."Krishna" were examined under glasshouse conditions. Organic additives included chopped leaves, flowers and seeds of four test plants viz., Azadirachta indica, Lantana camara, Calotropis procera and Thuja orientalis were applied alone and in combination with two nematicides viz.,Carbofuran/Furadan-3G and Phorate/Thimet-15G.Results revealed that all the treatments significantly improved plant growth parameters and reduced root knot development in comparison to untreated control .Among the tested organic additives chopped green leaves of A. indica(50g) with carbofuran(1g) added to the soil were found most effective to increase in plant growth parameters including plant height,fresh weight, number of leaves, number of flowers and highest reduction in root-knot development whereas the lowest reduction was observed in plants treated with the leaves of T. orientalis (50g).