scholarly journals Survey of Insects and Other Arthropods in Tomato (Lycopersiconesculentum Mill.) in Lanaodel Sur Province, ARMM, Philippines

2019 ◽  
pp. 45-53
Author(s):  
Balabag , Nelson M. ◽  
Anub, Remedios R. ◽  
Sabado, Emma M.
Keyword(s):  
Insect Pests ◽  
Flea Beetle ◽  
Aphis Gossypii ◽  
Cabbage Looper ◽  
Ladybird Beetles ◽  
Braconid Wasp ◽  
Tomato Fruitworm

This study was conducted to identify the insects and other arthropods associated with tomato. Insects on tomato belong to 14 families under six orders. Tomato insects were classified under orders Coleoptera, Diptera, Hemiptera, Homoptera , Lepidoptera , and Hymenoptera. The insect pests included the leafminer, Liriomyza sp., aphids, Aphis gossypii, cutworm, Spodopteralitura , tomato fruitworm, Helicoverpaarmigera, cabbage looper, Trichoplusiani, flea beetle, Psylliodessp, ladybird beetles like the 12-spotted and 28-spotted ladybird beetles, Epilachnachrysomelina and Epilachnaphilippinenesis, squash beetle, Aulacophorasimilisandmelon fly, Bactroceracucurbitae. Beneficial species were bees (Apis sp.), braconid wasp ( Cotesia sp.) and spiders. The survey started from December 14, 2013 and it ended on February 16, 2014.

scholarly journals Incidence of Insect Pests on Chayote, Sechium edule (Swartz.) in Nepal

2006 ◽  
Vol 27 ◽  
pp. 161-164
Author(s):  
FP Neupane ◽  
MD Sharma ◽  
KR Neupane
Keyword(s):  
Insect Pests ◽  
Flea Beetle ◽  
Aphis Gossypii ◽  
Fruit Fly ◽  
Field Cricket ◽  
Stink Bug ◽  
Cotton Aphid ◽  
White Grubs ◽  
Fruit Skin ◽  
Tobacco Caterpillar

The insect pests recorded during 1993-96 on chayote in Chitwan, Lalitpur and Parbat districts were as follows: white grubs (Phyllophaga spp.), mole cricket (Gryllotalpa fussor Fab.), field cricket (Brachytrypes portentosus Licht.), red pumpkin beetle (Aulacophora foveicollis Lucas), blue pumpkin beetle (Aulacophora lewisii Baly), flea beetle (Monolepta signata Oliv.), tobacco caterpillar (Spodoptera litura Fab.), stink bug (Coridius janus Fab.), spotted beetle (Epilachna pusilanima Mulsant), banded blister beetle (Mylabris phalerata Pallas), brown bug (Agonoscelis nubila Fab.), cotton aphid (Aphis gossypii Glov.), pumpkin fruit fly (Bacterocera cucurbitae Coq.), and three unidentified insect pests- brown weevil, hairy caterpillars and stem boring beetle. Of them, the fruit fly and cotton aphid were the serious ones. Nepalese and Mexican accessions of chayotes varied for their susceptibility to both the above insects. The chayote fruits with tough fruit skin and dense and long spines were less susceptible to fruit fly, while the spineless and smooth fruits were the most susceptible. Key words: Chayote germplasm, insect pests, aphid and fruit fly J. Inst. Agric. Anim. Sci. 27:161-164 (2006)

scholarly journals Economically significant pests of vegetable crops in Smederevska Palanka

Biljni lekar ◽  
2020 ◽  
Vol 48 (5) ◽  
pp. 475-487
Author(s):  
Bojana Jovanović ◽  
Olivera Petrović-Obradović ◽  
Bogoljub Zečević ◽  
Suzana Pavlović ◽  
Jelena Damnjanović
Keyword(s):  
Frankliniella Occidentalis ◽  
Insect Pests ◽  
Flea Beetle ◽  
Aphis Gossypii ◽  
Aphis Fabae ◽  
Macrosiphum Euphorbiae ◽  
Vegetable Crops ◽  
Stink Bugs ◽  
Insect Reproduction ◽  
Sufficient Food

The aim of this research was to determine insect pests on vegetable crops in Smederevska Palanka area. By using standard methods, equipment and tools, insect pests that caused significant and less significant damages have been determined on vegetable crops: pepper, tomato, cucumber, melon, zucchini, cabbage, pea, bean, spinach and beet at the arable area at the Institute for Vegetable Crops. The most significant insect pests, causing the most damages were Frankliniella occidentalis and Tuta absoluta, and also several species of aphids (Brevicoryne brassicae, Myzus persicae, Aphis gossypii, Aphis fabae and Macrosiphum euphorbiae), stink bugs (Nezara viridula, Eurydema spp.) and flea beetle (Phyllotreta spp.). These insects caused direct and indirect damages. The most significant damages have been noted in green houses due to favourable conditions for insect reproduction and sufficient food supplies.

scholarly journals The Role of Soil Amendments on Population Dynamics of Insect Pests, Growth Parameters and Yield of Eggplant, Solanum melongena (L.) Moench

2017 ◽  
Vol 7 (1) ◽  
pp. 7
Author(s):  
P. K. Baidoo ◽  
M. B. Mochiah ◽  
D. Asare ◽  
A. A. Sefah
Keyword(s):  
Soil Fertility ◽  
Plant Height ◽  
Bemisia Tabaci ◽  
Insect Pests ◽  
Soil Amendments ◽  
Aphis Gossypii ◽  
Solanum Melongena ◽  
Cow Dung ◽  
Leucinodes Orbonalis ◽  
Number Of Leaves

Loss of soil fertility as a result of continuous cropping on the same piece of land has necessitated the need to improve soil fertility for better crop yields. Inorganic and organic fertilizers have been used to improve soil fertility, however, excessive use of soil amendments improve vegetative growth of plants thereby attracting large numbers of insect pests. Cow dung and poultry droppings were used as soil amendments in a field experiment using eggplant Solanum melongena. The effects of these organic manures were compared with inorganic fertilizer (NPK) and a control where there was no application of soil amendment in a randomized complete block design with 3 replicates. Parameters studied were pests’ and their numbers, plant height, number of leaves per plant, leaf area, stem girth and yield. The major insect pests identified on the plant were Bemisia tabaci, Aphis gossypii, Leucinodes orbonalis and Eublemma olivacea. Bemisia tabaci and Aphis gossypii scores were significantly larger on cow dung and poultry manure plots. Leucinodes orbonalis and Eublemma olivacea numbers were not significantly different on the treated and control plots. Mean plant height, number of leaves and yield differed significantly among the soil amended plots. Even though soil amendments improve the nutrient content of the soil and the yield of crops it could lead to increase in pests numbers and damage caused to plants.

scholarly journals Efficacy of some insecticides against insect pests of mungbean (Vigna radiata L.)

2016 ◽  
Vol 40 (4) ◽  
pp. 657-667 ◽  
Author(s):  
Md Altaf Hossain
Keyword(s):  
Management Practices ◽  
Insect Pests ◽  
Flea Beetle ◽  
Management Approach ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Pod Borer ◽  
Insect Infestations ◽  
Benefit Cost ◽  
Thrips Population

Efficacy and profitability of insecticidal management practices using different insecticides were tested against insect pests of mungbean at Pulses Research Center, Ishurdi, Pabna, Bangladesh during two consecutive seasons of kharif-1 2013 and 2014. Insect infestations were reduced significantly by the application of synthetic insecticides. Spraying of Imidachloprid (Imitaf 20 SL) @ 0.5 ml/l of water showed the best efficacy in reducing flower infestation and thrips population followed by Fipronil (Regent 50 SC). Spraying of Thiamethoxam + Chlorantraneliprol (Voliam flexi 300 SC) @ 0.5 ml/l of water showed the best efficacy in reducing pod borer and flea beetle infestations. Spraying of Fipronil (Regent 50 SC) performed highest efficacy against stemfly infestation. The yield and the highest net return were obtained from Voliam flexi 300 SC, the highest benefit was obtained from Regent 50 SC treated plots. This might be due to the higher cost of Voliam flexi that reduced the profit margin and showed the lower marginal benefit cost ratio (MBCR) compared to Regent. Therefore, considering the efficacy and benefit, spraying of Fipronil (Regent 50 SC) @ 0.5 ml/l is the most profitable insecticidal management approach against insect pests of mungbean followed by Imidachloprid (Imitaf 20 SL) at the same dose.Bangladesh J. Agril. Res. 40(4): 657-667, December 2015

scholarly journals Transcriptomic Profiling of Cotton Leaves in Response to Cotton Aphid Attack

2019 ◽  
Author(s):  
Jianmin Zhang ◽  
Xiao Zhong ◽  
Pei Feng ◽  
Qiqi Ma ◽  
Qi Su ◽  
...  
Keyword(s):  
Molecular Mechanism ◽  
Functional Annotation ◽  
Insect Pests ◽  
Aphis Gossypii ◽  
Rna Seq ◽  
Cotton Production ◽  
Cotton Aphid ◽  
Time Points ◽  
New Genes ◽  
Comparison Results

Abstract Main conclusion The molecular mechanism of the interaction between cotton and cotton aphids remains unclear currently. The RNA-Seq study of cotton leaves was performed in response to cotton aphid damage at different time points. The transcriptome analysis revealed that a lot of cotton gene transcripts were regulated by cotton aphid damage. Cotton aphids (Aphis gossypii Glover) are regarded as one of the most harmful insect pests for cotton production. They are usually capable of causing severe yield loss through sucking cotton liquids, secreting honeydews and transmitting plant viral diseases. However, the molecular mechanism of the interaction between cotton and cotton aphids remains unclear currently. Therefore, the RNA-Seq study of cotton leaves was performed in response to cotton aphid damage at different time points (0 h,6 h,12 h, 24 h, 48 h and 72 h). A total of 9, 103 new genes were identified, and 7, 510 of them were annotated functionally. Based on the comparison results, the gene expression was analyzed according to the expression amount of genes in different samples. 24,793 differentially expressed genes were authenticate in all and their functional annotation and enrichment analysis were conducted. Compared with 0 h (without aphid damage, CK), the amount of down-regulated DEGs was largely more than that of the up-regulated genes at different time points under cotton aphid attack except for 48h. As revealed by the functional annotation of DEGs, these genes were involved in all kinds of plant biological process, including various resistance to abiotic and biotic stress, hormone metabolism, signaling transduction and transcriptional regulation. These results established a firm foundation for the study of the molecular mechanism of the interaction between cotton and cotton aphids and would facilitate the development of plant aphid resistant cultivars.

scholarly journals Impact of Intercropping Sorghum and Okra on the Incidence of Flea Beetles of Okra Podagrica spp in Dalwa, Maiduguri Semi-Arid Zone of Nigeria

2014 ◽  
Vol 14 ◽  
pp. 51-58
Author(s):  
M.M. Degri ◽  
I.B. Richard
Keyword(s):  
Field Experiments ◽  
Insect Pests ◽  
Arid Zone ◽  
Flea Beetle ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Leaf Damage ◽  
The Impact ◽  
Fruit Formation ◽  
Semi Arid

Field experiments were conducted at faculty of Agriculture teaching and research farm, university of Maiduguri in 2010 and 2011 rainy seasons. The aim was to investigate the impact of intercropping sorghum with okra on the incidence of flea beetle of okra (Podagrica spp) in the semi-Arid zone of Nigeria. The results showed that sole crop okra suffered flea beetle attack which affected its growth, fruit formation, fruit weights and fruit yield. Intercropping okra with sorghum significantly reduced the flea beetle populations, leaf damage caused by Podagrica spp (Coleoptera: Chrysomelidae). While increasing number of leaves for photosynthetic activities, plant height, fruit formation, fresh fruit weight and total fruit yield. The study concluded that okra intercropping at 1:1, 1:2 and 2:2 are the most efficient and productive intercrop systems in flea beetle management. Okra intercropping with cereal sorghum was found to be good for sustainable agriculture and organic farming in Nigeria due to its numerous advantages, particularly with respect to insect pests’ control.

Screen Hole Size and Barriers for Exclusion of Insect Pests of Glasshouse Crops

1991 ◽  
Vol 26 (1) ◽  
pp. 169-177 ◽  
Author(s):  
James A. Bethke ◽  
Timothy D. Paine
Keyword(s):  
Bemisia Tabaci ◽  
Myzus Persicae ◽  
High Density Polyethylene ◽  
Insect Pests ◽  
Aphis Gossypii ◽  
Liriomyza Trifolii ◽  
Hole Size ◽  
Aphis Gossypii Glover ◽  
Hole Geometry ◽  
Pass Through

Laboratory trials were conducted to determine the effectiveness of screens as barriers to five major greenhouse pests. Four screen types with a range of hole sizes were tested: high density polyethylene sheets perforated with holes that were in the center of an indentation on one side and a corolla of material on the opposite side; a woven mesh of polyethylene strands; a filter of unwoven polyester; and woven brass strainer cloth. Liriomyza trifolii (Burgess), Aphis gossypii Glover, Myzus persicae (Sulzer), Bemisia tabaci (Gennadius), or Frankiniella occidentalis (Pergande) were placed in a cage with a test screen separating them from a source of light and food. The insects' ability to pass through any barrier could not be predicted solely from thoracic width and hole size. Hole geometry or the way in which holes were formed were important elements in insects' exclusion. The most effective barriers to insect penetration correspondingly reduced air flow. The unwoven polyester filter designed specifically as an insect barrier did not restrain any of the insects under the methodology used. Results suggest that the maximum hole sizes for exclusion were: L. trifolii (640 μm), A. gossypii (341 μm), B. tabaci (462 μm) and F. occidentalis (192 μm).

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