scholarly journals INSECTICIDAL EVALUATION OF AQUEOUS EXTRACT OF INDIGENOUS PLANTS IN COMPARISON WITH SYNTHETIC INSECTICIDE FOR THE MANAGMENENT OF THRIPS Scirtothrips dorsalis (Thysnaoptera; Thripidae) IN TOMATO CROP

2021 ◽  
Vol 27 (3) ◽  
pp. 431-441
Author(s):  
Amjad Usman ◽  
Hina Gul ◽  
Karishma Karishma ◽  
Seema Zubair
Keyword(s):  
Natural Enemies ◽  
Spray Application ◽  
Green Lacewing ◽  
Indigenous Plants ◽  
Neem Extract ◽  
Tomato Crop ◽  
Ladybird Beetle ◽  
Synthetic Insecticide ◽  
Tomato Yield ◽  
Scirtothrips Dorsalis

Insecticidal evaluation of aqueous extracts of indigenous plant extracts in comparison with synthetic insecticide against Thrips (Scirotothrips dorsalis) on tomato was conducted under natural field condition during spring 2019. Experiment consists of 8 treatments (neem extract, tobacco extract, garlic extract, datura extract, lantana extract, eucalyptus extract, flonicamid (synthetic insecticide) and control following RCB Design with 3 replications. Treatments were applied thrice after 15 days interval. Results revealed that the three times application of the tested treatments showed varying toxicity against S. dorsalis 24, 48, 72 hours and 7 days after spray applications while ladybird beetle and green lacewing were also significantly affected when recorded 7 days after spray application. However, Flonicamid 50%WG proved to be the most effective till 7th and had lowest pest population followed datura and neem extract. neem extract in all the three spray application . Garlic and eucalyptus also produced significant results compared to control. Neem, tobacco, datura and flonicamid were found to be comparatively more hazardous to ladybird beetle and green lacewing population compared to eucalyptus, garlic and lantana to in all three spray application. Tomato yield was highest with flonicamid (12533 kg/ha) followed by datura and neem (11810 kg/ha and 11300 kg/ha) respectively, while lowest (8133 kg/ha) in control. It is concluded from the current research that flonicamid performed better against S. dorsalis but comparatively more hazardous to natural enemies however lantana, garlic and eucalyptus extract showed better result against S. dorsalis and comparatively safe towards natural enemies thus recommended to be incorporated in IPM program.

Efficacy of some indigenous plants and a synthetic insecticide for the control of Tribolium castaneum (herbst.) (coleoptera: tenebrionidae)

2016 ◽  
Vol 5 (01) ◽  
pp. 4742
Author(s):  
Mumtaz Akhtar ◽  
Naheed Akhtar* ◽  
Muhammad Arshad ◽  
Naima Iram ◽  
Muhammad Iqbal ◽  
...  
Keyword(s):  
Tribolium Castaneum ◽  
Eucalyptus Camaldulensis ◽  
Ethanol Extract ◽  
Cumulative Effects ◽  
Piper Nigrum ◽  
Paper Test ◽  
Indigenous Plants ◽  
Synthetic Insecticide ◽  
Insecticidal Action ◽  
Coleoptera Tenebrionidae

Research studies were carried out to evaluate insecticidal action of two plant products and a synthetic insecticide on a major stored-product insect, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). The plant species studied were, Piper nigrum and Eucalyptus camaldulensis, whereas methoprene used as synthetic insecticide. Two formulations viz., powder and ethanol extract of each plant and four concentrations (5ppm, 10ppm, 15ppm and 20 ppm) of methoprene were tested. Repellency was tested using the filter paper test whereas mortality, weight loss protection and anti-feedant potential of all treatments was evaluated by using whole maize grains. Our results were highly significant as compared to control however; P. nigrum was more effective as compared to E. camaldulensis. The investigation of cumulative effects of botanical and synthetic insecticide and isolation of active ingredients of botanicals are further issues to be investigated for their inclusion in. I. P. M programs.

scholarly journals Evaluation of soil solarisation and bio-fumigation for the management of bacterial spot of tomato

2014 ◽  
Vol 14 (64) ◽  
pp. 8998-9015
Author(s):  
K Misrak ◽  
◽  
A Amare ◽  
N Dechassa N Dechassa
Keyword(s):  
Xanthomonas Campestris ◽  
Plant Pathogens ◽  
Bacterial Spot ◽  
Management Options ◽  
Tomato Crop ◽  
Soil Medium ◽  
Ethiopian Mustard ◽  
Tomato Yield ◽  
Mustard Plant ◽  
Dire Dawa

Soil -borne plant pathogens cause heavy losses to all major crops, leading to reductions in both yield and quality. Soil solarisation and bio- fumigation offer disease management options that are safe and reduce the use of pesticides for soil -borne plant pathogens. Mustard plant releases antimicrobial hydrolysis products, notably isothiocyanates when used as a bio- fumigant. Bacterial spot of tomato caused by Xanthomonas campestris pv. vesicatoria (Xcv) can survive in soil and plant debris, which serve as a primary inoculum for infecting the next tomato crop. An experiment was carried out with the objective of evaluating effects of soil solarisation and the use of Ethiopian mustard ( Brassica carinata A. Braun) as a bio -fumigant to control bacterial spot disease and on yield of tomato. The tr eatments consisted of six types of potted soil medium (solarised at Haramaya and Dire Dawa, bio -fumigated, biofumigated as well as solarised at Haramaya and Dire Dawa, and untreated control as non- solarised non- biofumigated pots). Treated tomato seeds were planted and fruit yields were compared among treatments. Potted soil was inoculated with the pathogen, Xcv, belonging to T2P2 race group. The total microbial and Xcv counts were done before as well as after setting up the experiment. The results revealed that solarisation reduced the population of Xcv from 10.68 to 8.79 CFU g -1 , total bacterial population from 11.27 to 9.86 CFU g -1 , and total actinomycete counts from 11.69 to 9.44 CFU g -1 while bio -fumigation had a non- significant effect on Xcv and total microbial counts. None of the treatments exhibited a significant effect on fungal counts. The fruit yield of tomato grown on biofumigated as well as solarised soil was the highest (91.18 t ha -1 ) as compared to the other treatments. It can, therefore, be con cluded that solarisation and bio- fumigation cannot be used as a bio- rational option for effective management of Xcv on tomato but the two methods could be used to increase tomato yield in the presence of the pathogen.

scholarly journals Impact of a synthetic insecticide and plant extracts on Aphis craccivora (Hemiptera: Aphididae) and coccinellid species in common beans

2021 ◽  
Vol 47 (2) ◽  
Author(s):  
Mateus Cardoso De Sousa ◽  
Vanessa Andaló ◽  
Renan Zampiroli ◽  
Cleyton Batista De Alvarenga ◽  
Gleice Aparecida De Assis ◽  
...  
Keyword(s):  
Aphis Craccivora ◽  
Control Treatment ◽  
Economic Damage ◽  
Phytophagous Insects ◽  
Common Beans ◽  
Neem Extract ◽  
Synthetic Insecticide ◽  
Crop Development ◽  
Insect Mortality ◽  
Bean Crop

Bean crop is attacked by several phytophagous insects, affecting its production and causing losses to farmers. Among the insects considered as bean crop pests, aphids can cause economic damage by continuously sucking the plant sap throughout crop development. Thus, this study aimed to evaluate the control of Aphis craccivora on bean crop with insecticides and its effect on the presence of ladybugs. The tested products were: 1) imidacloprid + bifenthrin; 2) neem extract; 3) d-limonene, and, as a control treatment, water was applied. Insect mortality and the presence of ladybugs were checked every three days until harvest. There was a reduction in the population of aphids after the application of the products for up to 27 days. The presence of ladybugs was higher in the control treatment than in the treatments with insecticides. Thus, the tested products were considered potential in the control of A. craccivora. However, they also negatively affected the presence of coccinellids.

scholarly journals Aleurocanthus spiniferus (Hemiptera: Aleyrodidae) in Some European Countries: Diffusion, Hosts, Molecular Characterization, and Natural Enemies

Insects ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 42 ◽  
Author(s):  
Francesco Nugnes ◽  
Stefania Laudonia ◽  
Giovanni Jesu ◽  
Maurice Gerardus Maria Jansen ◽  
Umberto Bernardo ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Natural Enemies ◽  
Host Plants ◽  
Biocontrol Agent ◽  
First Record ◽  
New Host ◽  
Ladybird Beetle ◽  
Albanian Population ◽  
First Time

After the first record in 2008 in Southeast Italy, the alien invasive and quarantine pest Aleurocanthus spiniferus (orange spiny whitefly—OSW) has gradually spread throughout Europe, infesting several new host plants in addition to the known hosts. Molecular characterization of some Italian populations and a newly found Albanian population highlighted two different haplotypes invading Europe, belonging to one of the haplogroups previously recorded in China. A predator was recorded for the first time in several fields in Italy in association with OSW and other whitefly species. It was successively identified through a morpho-molecular characterization as a Nearctic member of the tribe Serangiini, the ladybird beetle, Delphastus catalinae. This predator represents a promising biocontrol agent to manage A. spiniferus outbreaks in Italy and other invaded countries.

scholarly journals Fertilizer type influences tomato yield and soil N2O emissions  

2017 ◽  
Vol 63 (No. 3) ◽  
pp. 105-110 ◽  
Author(s):  
Vitale Luca ◽  
Polimeno Franca ◽  
Ottaiano Lucia ◽  
Maglione Giuseppe ◽  
Tedeschi Anna ◽  
...  
Keyword(s):  
Crop Production ◽  
Global Climate ◽  
Nitrification Inhibitor ◽  
Mineral Fertilizer ◽  
Fruit Production ◽  
Mineral Fertilizers ◽  
Soil N ◽  
Mineral Fertilization ◽  
Tomato Crop ◽  
Tomato Yield

Improvements in crop management for a more sustainable agriculture are fundamental to reduce environmental impacts of cropland and to mitigate effects on global climate change. In this study three fertilization types – ammonium nitrate (control); mineral fertilizer added with a nitrification inhibitor (3,4-dimethylpyrazole phosphate (DMPP)), and an organo-mineral fertilizer (OM) – were tested on a tomato crop in order to evaluate effects both on crop production and soil N<sub>2</sub>O emissions. Plants grown under OM fertilization had a greater relative growth rate compared to mineral fertilization, due to a higher net assimilation rate, which was related to a greater light interception rather than to a higher photosynthetic efficiency. OM fertilization determined the highest fruit production and lower soil N<sub>2</sub>O fluxes compared to NH<sub>4</sub>NO<sub>3</sub>, although the lowest soil N<sub>2</sub>O fluxes were found in response to mineral fertilizer added with a nitrification inhibitor. It can be concluded that organo-mineral fertilizer is a better nutrient source compared to mineral fertilizers able to improve crop yield and to mitigate soil N<sub>2</sub>O emission.  

scholarly journals Effects of pest control on aphids and theirs natural enemies in maize stands

2008 ◽  
Vol 56 (1) ◽  
pp. 149-156
Author(s):  
Václav Psota ◽  
Vladimír Hula
Keyword(s):  
Natural Enemies ◽  
Parasitoid Wasps ◽  
Green Lacewing ◽  
Trichogramma Evanescens ◽  
Biological Preparation ◽  
Significant Difference ◽  
Syrphid Flies ◽  
South Moravia ◽  
Correlative Relationship ◽  
Aphid Populations

Over the period of July to September 2005 effects of insecticide Integro with the effective substance methoxifenozide and biological preparation Trichoplus using parasitoid wasps Trichogramma evanescens and T. pintoi were evaluated in maize stands. These natural enemies of aphids were recorded in monitored fields (located in South Moravia, Czech Republic): parasitoids of genera Aphidius and Praon (Hymenopetra, Aphidiidae), predatory syrphid flies (Diptera, Syrphidae), ladybirds (Coleoptera, Coccinellidae), Orius bugs (Heteroptera, Anthocoridae), Green Lacewing – Chrysoperla carnea (Neuroptera, Chrysopidae) and spiders (Araneida). No significant difference (T = 0.003; F = 4.894; P = 0.004) in popu­lations of aphids and their antagonists was found in the studied variants (Integro, Trichoplus). More remarkable differences were found only soon after spraying with Integro. Syrphid flies pupae decreased by 41% in the Integro variant, and by 13% in the Trichoplus variant. Ladybird larvae did not occur in the Integro variant after spraying, there where 0.12 ladybird larvae on plant in the Trichoplus variant. Number of ladybird adults increased from 0.01 to 0.53 individuals per plant in the Trichoplus variant, but from 0.03 to 0.1 individuals in the Integro variant. Number of ladybird pupae decreased from 0.32 to 0.02 pupae per plant in the Integro variant, but it has increased from 0.04 to 0.54 in the Trichoplus variant. Correlative relationship between ladybird adult growing coefficient and aphid populations in the Trichoplus variant was found.

scholarly journals Impact of Legumes as a Pre-Crop on Nitrogen Nutrition and Yield in Organic Greenhouse Tomato

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 468
Author(s):  
Anastasios Gatsios ◽  
Georgia Ntatsi ◽  
Luisella Celi ◽  
Daniel Said-Pullicino ◽  
Anastasia Tampakaki ◽  
...  
Keyword(s):  
Tomato Fruit ◽  
Soil Mineral N ◽  
Soil Mineral ◽  
Mineral N ◽  
Tomato Crop ◽  
Total N ◽  
Green Manuring ◽  
Preceding Crop ◽  
Greenhouse Tomato ◽  
Tomato Yield

An organic greenhouse crop of tomato was established in February following cultivation of cowpea (CP) or common bean (CB) for green pod production, or faba bean (FB) for green manuring. The vegetative residues of CP and CB were incorporated to the soil together with farmyard manure (FYM), prior to establishing the tomato crop. The FB plants were incorporated to the soil at anthesis together with either FYM or composted olive-mill waste (CO). Green manuring with FB resulted in higher soil mineral N levels during the subsequent tomato crop and higher tomato fruit yield when combined with FYM, compared to compost. The level of soil mineral N was the main restrictive factor for yield in organic greenhouse tomato. FB for green manuring as preceding crop to tomato increased significantly the level of soil mineral N and tomato yield compared to CB or CP aiming to produce green pods. The lowest tomato yield was obtained when the preceding crop was CB cultivated for green pod production. The soil mineral N was significantly higher when FYM was applied as base dressing compared with CO, despite the higher total N concentration in CO, pointing to slower mineralization rates of CO during tomato cultivation.

scholarly journals ABUNDANCE OF INSECT PESTS AND THEIR NATURAL ENEMIES ASSOCIATED WITH BRINJAL (SOLANUM MELONGENA) CROP

2020 ◽  
Vol 2 (1) ◽  
pp. 01-03
Author(s):  
Muhammad Ramzan ◽  
Ghulam Murtaza ◽  
Muhammad Nauman ◽  
Aqsa Zainab ◽  
Ahmad Ali ◽  
...  
Keyword(s):  
Experimental Study ◽  
Insect Pests ◽  
Solanum Melongena ◽  
Stem Borer ◽  
Green Lacewing ◽  
Weekly Basis ◽  
Praying Mantis ◽  
Ladybird Beetle ◽  
Leaf Roller ◽  
Fruit Borer

An experimental study was conducted to check the abundance of insect pests and biological fauna in brinjal crop (Solanum melongena L.) during 2018. One acre of brinjal was cultivated for this purpose and data was recorded on weekly basis from ten tagged plant. In this study, biological fauna such as hover fly, honey bee, butterfly, green lacewing, praying mantis and ladybird beetle were recorded. The insect pests such as brinjal fruit borer, leafhopper, whitefly, leaf roller, thrips, stem borer, aphid and mealybug were recorded during the present study.

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