scholarly journals The impact of different plant extracts on population suppression of Helicoverpa armigera (Hub.) and tomato (Lycopersicon esculentum Mill) yield under field conditions

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0260470
Author(s):  
Shahbaz Ali ◽  
Yunzhou Li ◽  
Inzamam Ul Haq ◽  
Waseem Abbas ◽  
Muhammad Zeeshan Shabbir ◽  
...  
Keyword(s):  
Lycopersicon Esculentum ◽  
Plant Extracts ◽  
Helicoverpa Armigera ◽  
Field Conditions ◽  
Growth And Yield ◽  
Neem Seed ◽  
Management Options ◽  
Tomato Yield ◽  
Helicoverpa Armígera ◽  
The Impact

Helicoverpa armigera (Hub.) is a destructive pest of the tomato (Lycopersicon esculentum Mill) crop in Pakistan. Although insecticides are the primary management strategy used to control H. armigera, most of them are not effective due to considerable toxic residual effects on the fruits. Nonetheless, H. armigera is rapidly evolving resistance against the available pesticides for its management. This situation calls upon the need of alternative management options against the pest. Different plant extracts have been suggested as a viable, environment-friendly option for plant protection with minimal side effects. Furthermore, the plant extracts could also manage the insect species evolving resistance against pesticides. This study evaluated the efficacy of different plant extracts (i.e., Neem seed, turmeric, garlic and marsh pepper) against H. armigera. Furthermore, the impact of the plant extracts on growth and yield of tomato crop was also tested under field conditions. The results revealed that all plant extracts resulted in higher mortality of H. armigera compared to control. Similarly, the highest plant height was observed for the plants treated with the plant extracts compared to untreated plants. Moreover, the highest tomato yield was observed in plants treated with plant extracts, especially with neem seed (21.013 kg/plot) followed by pepper extract (19.25 kg/plot), and garlic extract 18.4 kg/plot) compared to the untreated plants (8.9 kg/plot). It is concluded that plant extracts can be used as eco-friendly approaches for improving tomato yield and resistance management of H. armigera.

scholarly journals PERBAIKAN REKOMENDASI PAKET PHT UNTUK PENGENDALIAN HAMA Helicoverpa armigera Hbn. PADA TANAMAN KAPAS

2020 ◽  
Vol 9 (2) ◽  
pp. 63
Author(s):  
SKI HADIYANI ◽  
DA SUNARTO ◽  
A. A A. GOTHAMA ◽  
S. A. WAHYUNI
Keyword(s):  
Gossypium Hirsutum ◽  
Helicoverpa Armigera ◽  
Rate Of Return ◽  
Research Station ◽  
Neem Seed ◽  
Marginal Rate ◽  
Action Threshold ◽  
Helicoverpa Armígera ◽  
Marginal Rate Of Return ◽  
Nuclear Polyhedrosis

<p>Rekomendasi pengendalian hama terpadu (PUT) hama utama lanaman kapas, akan tetapi secara tcknis dan ekonomis masih sulit diterapkan oleh petani. Unluk memperbaiki rekomendasi itu maka dikaji efisiensi pemanfaatan parasitoid Trichogrammatoidea armigera N&amp;N. HeUcoverpa armigera nuclear polyhedrosis virus (//oNPV). dan insektisida nabati serbuk biji mimba (SBM) terhadap // armigera. Penelitian dilaksanakan pada musim lanam 199899 di kebun Instalasi Penelitian Tanaman Tembakau dan Serat, Asembagus, Situbondo, Jawa Timur. Rancangan penelitian adalah acak kelompok dengan 6 perlakuan, dan 3 ulangan Ukuran plot adalah 50 m x 50 m Pada rekomendasi standar rakitan komponen PITT, perlakuan yang ditambahkan adalah (1) penyemprotan SBM. (2) pelepasan T. armigera ■ penyemprotan SBM, (3) pelepasan '/'. armigera ' penyemprotan insektisida kimia, (4) penyemprotan faNPV I penyemprotan insektisida kimia. (5) penyemprotan insektisida kimia, dan (6) lanpa perlakuan (kontrol). Penyemprotan SUM, //oNPV, dan insektisida kimia dilakukan apabila populasi ulat // armigera mencapai ambang pengendalian (4 tanaman lerinfestasi per 25 tanaman). dan pelepasan 7 armigera dilakukan apabila populasi telur //. armigera mencapai ambang pelepasan (25 telur per 25 tanaman) Penyemprotan SBM, pelepasan T. armigera dan penyemprotan //oNPV dapat ditambahkan pada rekomendasi standar rakitan komponen PHT. Penambahan penyemprotan SBM pada rekomendasi standar rakitan komponen PITT adalah paling cisien diantara tiga komponen PITT yang ditambahkan, memberikan eisiensi (Marginal Regional Rate of Return. MRR) scbasar 3.64 dengan produktivitas kapas berbiji 1 562 kgha (meningkatkan 392 kg atau 25%) dan biaya penyemprotan Rp 172 267 (menurun Rp 259 883 atau 60%).</p><p>Kata Kunci : Azadirachla tndica A. Juss, Trichogrammatoidea armigera N&amp;N, WoNPV, HeUcoverpa armigera Hbn . PITT, Gossypium hirsutum I.</p><p> </p><p><strong>ABSTRACT </strong></p><p><strong>Improved 1PM recomendation package for controlling Helicoverpa armigera Hbn. on coton</strong></p><p>An experimcnl on Ihe use of IPM components for controlling HeUcoverpa armigera Hbn. as ihe pests of cotton was conducted in Asembagus Research Station during cotton planting season 1998/99 Ihe objective of this experiment was to assess the usefulness of Trichogrammatoidea armigera N&amp;N., //oNPV, and botanical insecticide (neem seed powder) in improving the IPM recommendation package, so that it can be adopted by farmers This experiment was arranged in randomized blok design with 6 treatments and 3 replicates. Ihe size of each plot was 50 m X 50 m Ihe treatments comprise: (1) neem spray; (2) T. armigera release neem spray; (3) T. armigera release i insecticide spray; (4) //(A'I'V spray I chemical. (5) chemical; and (6) control (unlrcatment) were added lo the standar IPM recommendation package. Neem, /YoNPV, and chemical spray was done whenever population of H. armigera larvae reached action threshold (4 infected plants 25 plants) and release of T. armigera was done whenever population of H. armigera eggs reached "release threshold" (25 cggs/25 plants) Neem seed powder spray, T. armigera release, and //oNPV spray could be added to (he standar IPM recomendation package. Ihe most efficient among this three components was neem seed powder spray. Which gives eicjency Marginal Rate of Return (MRR) 3 64, cotton seed productivity I 562 kgha (increase 392 kg or 25%) and spraying cost Rp 172 267 (decrease Rp 259 883 or 60%).</p><p>Key words: Azadirachla indica A. Juss., Trichogrammatoidea armigera N&amp;N, 7/aNPV, Helicoverpa armigera Hbn , IPM, Gossypium hirsutum I.</p>

scholarly journals Seed Coating with Arbuscular Mycorrhizal Fungi for Improved Field Production of Chickpea

Agronomy ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 471 ◽  
Author(s):  
Inês Rocha ◽  
Isabel Duarte ◽  
Ying Ma ◽  
Pablo Souza-Alonso ◽  
Aleš Látr ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal ◽  
Field Conditions ◽  
Growth And Yield ◽  
Seed Coating ◽  
Agricultural Practice ◽  
Agricultural Crops ◽  
Field Inoculation ◽  
Inoculation Methods ◽  
Fungal Isolates ◽  
The Impact

Although arbuscular mycorrhizal (AM) fungi are known to promote growth and yield of agricultural crops, inoculation methods for effective scaling up from greenhouse to the field are still underexplored. The application of single or mixed beneficial AM fungal isolates is hindered by the lack of experimental reproducibility of findings at different scales and the cost-effectivity of inoculation methods. Seed coating has been considered a feasible delivery system of AM fungal inocula for agricultural crops. In this study, the impact of single and multiple AM fungal isolates applied via seed coating on chickpea productivity was evaluated under greenhouse and field conditions. Overall, plants inoculated with multiple AM fungal isolates had better performance than those inoculated with single AM isolate under greenhouse and field conditions. While plants in greenhouse displayed higher shoot dry weight (14%) and seed individual weight (21%), in field, inoculation with multiple AM isolates increased pod (160%), and seed (148%) numbers, and grain yield (140%). Under field conditions, mycorrhizal root colonization was significantly higher in chickpea plants inoculated with multiple AM fungal isolates compared to other treatments. These findings highlight the potential of field-inoculation with multiple AM fungal isolates via seed coating as a sustainable agricultural practice for chickpea production.

scholarly journals Bio-rational Management of Pod Borer (Helicoverpa armigera L.) in Chickpea Crop

2021 ◽  
Author(s):  
B.L. Jat ◽  
Nidhi . ◽  
Gopichand Singh ◽  
Pushpa Kumawat
Keyword(s):  
Helicoverpa Armigera ◽  
Pheromone Trap ◽  
Cost Ratio ◽  
Yield Increase ◽  
Benefit Cost Ratio ◽  
Pod Borer ◽  
Helicoverpa Armígera ◽  
Rational Management ◽  
Benefit Cost ◽  
The Impact

On Farm Testing of Pheromone trap @ 5/ha + Coriander row (7/8:1) + HaNPV @ 250 LE/ha against pod borer (Helicoverpa armigera L.) management was assessed on farmers field in Nagaur district during 2020-21. Trial was conducted on 10 farmer’s field to know the impact of said technology on chickpea pod borer management. In the demonstrated technologies the chickpea seed production 19.83 q/ha. The percent seed yield increase over the farmer’s practices was 34.11%. The net return in demonstration technology was ` 67036/ha and the same was ` 44525/ha. The incremental benefit cost ratio was 3.26 in demonstration technology as compared to farmer’s/ local check 2.60 respectively.

scholarly journals COMPARATIVE EFFICACY OF FOUR INSECTICIDES AGAINST AMERICAN BOLLWORM (Helicoverpa armigera) UNDER FIELD CONDITIONS

2020 ◽  
pp. 191-194
Author(s):  
Ahmad Nawaz Sipra
Keyword(s):  
Helicoverpa Armigera ◽  
Block Design ◽  
Tomato Fruit ◽  
Field Conditions ◽  
Large Area ◽  
Experimental Conditions ◽  
Solanum Lycopersicum L ◽  
American Bollworm ◽  
Helicoverpa Armígera ◽  
Fruit Borer

The tomato, Solanum lycopersicum L., is the 2nd major crop which is widely grown on the large area of Pakistan. This crop is affected by the fruit borer, Helicoverpa armigera (Hubner). Although some predators and parasitoids have been recorded in the field for their natural control, their manipulation to a successful crop management is still awaited. The present study was planned to evaluate the toxic effects of four insecticides, i.e. Coragen 20SI (Chlorantraniliprole), Steward (indoxicarb), Belt 39.4 (Flubendiamide), Proclaim (emamectin benzoate) against tomato fruit borer (H. armigera) under field conditions. The research trial was laid out under randomized complete block design (RCBD) together with control. Findings of the bioassays displayed that Coragen 20SI exhibited noteworthy mortality (75.23%) of H. armigera after exposure of 6 days, among the four tested insecticides. Whilst Proclaim and Chlorantraniliprole exhibited relatively lower mortalities of 70.90% and 65.41%, respectively. While relatively lower mortality values i.e. 61.10, 55.41, 52.76 and 48.19% were recorded after 4 days and 57.80, 50.12, 46.09 and 39.24% after 2 days. Overall, results disclosed that all four tested insecticides gave enhanced control under controlled experimental conditions. Hence, Coragen 20SI and Steward can be used in integrated pest management (IPM) of H. armigera.

scholarly journals (183) Effects of Colored Plastic Mulches on Tomato Growth and Yield

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1000A-1000
Author(s):  
Maurice Ogutu
Keyword(s):  
Lycopersicon Esculentum ◽  
Block Design ◽  
Growth And Yield ◽  
Bare Ground ◽  
Plastic Mulch ◽  
Tomato Variety ◽  
Tomato Yield ◽  
Randomized Complete Block Design ◽  
Tomato Growth

Different colored plastic mulches can influence tomato (Lycopersicon esculentum L.) growth and yield. A study was carried out to compare the effects of different colored plastic mulches and bare ground on growth and yield of tomato. Ten treatments, namely, control (bare ground), and plastic mulches (black smooth, red, black embossed, blue, olive, yellow, clear, white, and reflective) were replicated four times in a randomized complete-block design. Tomato variety `Sunstart' seeds were planted in flats filled with Jiffy Mix in a greenhouse in late Apr. 2004 and seedlings transplanted in early June 2004. The seedlings planted in white and reflective plastic mulches were taller than seedlings planted in black smooth, black embossed, clear, blue, red, and olive mulches by 24 July 2004. Weeds were growing underneath clear, yellow, and red plastic mulches, and squash bugs were observed in yellow plastic mulch treatment on 2 July. Cumulative marketable tomato yield was highest in plants grown in reflective and white plastic mulches, and lowest in plants grown in yellow plastic mulch. Marketable fruits from plants grown in reflective and white mulches were larger than fruits from other treatments. In comparison with black embossed plastic mulch, plants grown in reflective and white plastic mulches had 2 and 1.2 tons/acre higher marketable yields, respectively, than plants grown in black embossed plastic mulch.

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