Efficacy of botanical pesticides against white backed plant hopper in rice (original) (raw)
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Effectiveness of Insecticides and Biopesticides against White backed Plant Hopper
2014
An ecofriendly alternative to chemical pesticides i s biopesticides, which encompasses a broad array of microbial pesticides, biochemicals derived from micro -organisms and other natural sources, and processes involving the agricultural commodities that confer protection aga inst pest damage.The field studies were carried out for effectiveness of insec ticides and biopesticides against White backed Plan t Hopper on rice in rewa region. Study of insect pest complex w as done from 2006-07 to 2007- 08. The observations were made regarding the grain yield monocrotophos was the most efficient insecticide where as among biopescides wanis was
Evaluation of new insecticides against rice brown plant hopper
Indian journal of entomology, 2018
Evaluation of six insecticides viz., ethiprole 40 + imidacloprid 40 WG, etofenprox 10 EC, buprofezin 25 SC, pymetrozine 50 WG, acephate 75 SP and monocrotophos 36 SL were evaluated against rice brown plant hopper BPH. The BPH population was counted on 20 randomly selected hills before spray at 1, 3, 7 and 10 days after spray. The experiment was conducted during kharif 2014 and 2015 at the Agricultural Research Station, Kampasagar, laid out in Randomized Block Design with three replications. All the insecticides significantly reduced the BPH. The BPH population varied from 114.0 to 156.6 and 133.4 to 176.6/20 hills during kharif 2014 and 2015 at one day prior to spray. The population was significantly lower with pymetrozine 50 WG @ 250 g/ha, followed by ethiprole 40 + imidacloprid 40 W.G @ 125 g/ha, etofenprox 10 EC @ 750 ml/ha, acephate 75 SP @ 667g/ha, monocrotophos 36 SL @ 1390 ml/ha and buprofezin 25 SC @ 825 ml/ha at all the counting days of after spray in both 2014 and 2015. Th...
2009
The effects of two different neem products (Parker Oil™ and Neema®) on mortality, food consumption and survival of the brown planthopper, Nilaparvata lugens Stål (BPH) (Homoptera: Delphacidae) were investigated. The LC50 (3.45 ml/L for nymph and 4.42 ml/L for adult in Parker Oil™ treatment; 4.18 ml/L for nymph and 5.63 ml/L for adult in Neema® treatment) and LC90 (8.72 ml/L for nymph and 11.1 ml/L for adult in Parker Oil™ treatment; 9.84 ml/L for nymph and 13.07 ml/L for adult in Neema® treatment) were identified by probit analysis. The LC90 (equal to recommended dose) was applied in the rice field. The effective concentration of both Parker Oil™ and Neema® took more than 48 h to kill 80% of the N. lugens. Fourth instar nymph and adult female N. lugens were caged on rice plants and exposed to a series (both LC50 and LC90) of neem concentrations. Nymph and adult female N. lugens that were chronically exposed to neem pesticides showed immediate mortality after application in laboratory experiment. The quantity of food ingested and assimilated by N. lugens on neem-treated rice plants was significantly less than on control rice plants. The results clearly indicate the neem-based pesticide (Parker Oil™ and Neema®), containing low lethal concentration, can be used effectively to inhibit the growth and survival of N. lugens.
International Journal of Tropical Insect Science, 2020
The experiment was based on the management of Brown plant hopper, important pest of rice. All the given treatment was applied on this pest. The data observed after 3, 7 and days after spray. The observations revealed that all the treatments were found significantly superior over untreated control, Imidacloprid 17.8 SC @ 200 ml/ha were found most effective in comparison to all other treatments. The next effective treatment was Fipronil 5 SC @ 1000 ml/ha followed by Thiamethoxam 25 WG @ 100 g/ha. and in bio-pesticides Metarhizium anisopliae 4.7 × 10 8 c.f.u./gm @ 2.5 kg/ha.gave the best result among all bio-pesticides. The plot treated by Imidacloprid provide the best Cost benefit ratio
Bioefficacy of crude polyherbal formulations against hoppers (Insecta: Hemiptera) of rice
Journal of Entomology and Zoology Studies, 2020
Bio-efficacy of two crude polyherbal formulations against Nephotettix virescens-the Green Leafhopper (GLH) and Sogatella furcifera, the White-backed plant hopper (WBPH), major sucking insect pests of paddy was carried out at farmer's field of North Gujarat Zone (GJ-4), Gandhinagar, Gujarat during Kharif 2018. The aqueous and oil-based crude formulations were tested at two different concentrations each, in comparison with chemical, botanical and untreated control. Both the crude formulations were effective in the management of green leafhopper and white backed plant hopper in a dose-dependent manner, however, the aqueous formulation was more efficacious as compared to the oil-based formulation. These herbal formulations are an eco-friendly, cost-effective and safe alternative to chemical control measures for the management of paddy pests and can easily be incorporated in the integrated pest management (IPM) programs for the control of sucking pests in Paddy.
2021
A field experiment was conducted during Kharif season 2019 at central crop research farm, Department of Entomology, SHUATS, Prayagraj, (UP). A replicated field trial was conducted in a Randomized block design at central crop research farm. The objective was to include the commercial and natural neem products to control the leaf folder, (Cnaphalocrocis medinalis). A spray was given in two intervals. There were seven treatments each replicated thrice. Among seven treatments the combination of Neem oil + NSKE proved the best efficacy with 9.85 in first spray and 7.25 in the second spray and also 40.25 q/ha increased by 23.75 q/ha compared to control plot in yield and B:C ratio is 1:5.90 were recorded followed by Neem oil proved efficacy with 8.35 in second spray and yield with 38.75 q/ha and B:C ratio is 1:5.72. It could be concluded that for the management of Rice Leaf folder (Cnaphalocrocis medinalis) on Rice crop, recommended treatment schedule of Neem oil + NSKE proved to be most e...
The purpose of research is to study impact of different time planting of soybean and neem seed extract application to pest insect population on rice field. The research was used Random Block Design in three treatment of insecticides application i.e: neem seed extract together with rice planting, neem seed extract on soybean 17 days after rice planting, synthetic insecticides on 17 days after rice planting (Delthametrin on soybean and Chlorpirifos on rice), respectively. Research was conducted in rice fields with irrigation channels. The land area is 0.8 hectares with extensive experiments each rice terraces approximately 900 m 2 with separate by rice terraces for every treatment. Each treatment consisted of three groups and using nine rice terraces. Samples of the rice plant population is 25 plants per sample unit. The results was showed treatment by neem seed extract with different time planting of soybeans able to reduce number of pest insects populations such as : N. virescens (80.38%) , N. lugens (67.17%), S. incertulas (66.5 %), and L. oratorius (93.46%) when compared to treatment with synthetic insecticides (Delthamethrin and Chlorpyrifos).
International Journal of Plant & Soil Science
The present study on Integrated Pest Management (IPM) of brown plant hopper, Nilaparvata lugens (Stal) in rice has been conducted as a Front Line Demonstration (FLD) in the adopted villages of KVK, Bellampalli, Mancherial district of Telangana state during the kharif (June – December), season of 2018‒19, 2019‒20 and 2020‒21 respectively to create awareness among the farming community on the IPM practices to manage the pest. The adoption of IPM practices includes formation of alleyways, recommended dose of nitrogen fertilizer, alternate wetting and drying, spraying of need based insecticides like Dinotefuran 20 SG @ 0.4 g or Pymetrozine 50 WDG @ 0.6 g l-1 of water were carried out. The study reveals that the lowest hoppers incidence was witnessed in the demonstrated plot with 1.84, 12.18 and 19.0 adults hill-1 in tillering stage and 7.76, 24.95 and 52.38 adults hill-1 in panicle stage over farmers practice (3.33, 35.40 and 25.42 adults hill-1 in tillering stage and 19.84, 50.30 and...
International Journal of Pure & Applied Bioscience, 2017
against Yellow Stem Borer (Scirpophaga incertulas Walker) under kharif Rice-Crop-Ecosystem of Manipur valley. Among the various ecofriendly insecticides field evaluated against the Lepidoterous pest, (Acephate 50% + Imidacloprid 1.8) 51.8 SP@750 g a.i. ha-1 (2.11% DH) was found most effective against the yellow stem borer with a record of lowest Dead Heart damage.The maximum dead heart percent was recorded in plots treated with EMFPE @ 2500 ml/ha(3.92% DH).The pooled mean data further indicated that (Acephate 50% +Imidacloprid 1.8) 51.8 SP@750 g a.i. ha-1 proved to be the most effective insecticidal treatments in reducing white ear head (WEH) incidence with a record of 1.61% WEH as against 2.23% in untreated control.