Preliminary Survey on Occurrence of Aphids, Thrips Leaf Miner in Tomato Growing Areas in Morogoro Region Tanzania (original) (raw)

Preliminary Studies on Insect Pest Incidence on Tomato in Bama, Borno State, Nigeria

International Letters of Natural Sciences, 2014

This study assessed the insect pest infestation of tomato during 2011 and 2012 in three localities namely Bula Kuliye, Kajeri and Soye of Bama Local Government Area, Borno State, Nigeria. Fifty plants were randomly checked per farmers’ field for insect pest recovery and count. Sampling was carried out in five to nine farmers’ fields per locality. With 38-52 %, 9-62 %, 13-39 % and 5-9 % species composition respectively across localities, Helicoverpa armigera Hubner (Lepidoptera: Noctuidae) followed by Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) were more predominant insect pests of tomato in these localities over Tetranychus sp. (Acari: Tetranichidae) and Spodoptera litoralis (Boisd.) (Lepidoptera: Noctuidae). Total proportion of infested tomato plants per farmers’ field ranged from 19-36 %, and was significantly higher in Bula Kuliye and Kajeri than in Soye. Total number of insect pests per plant/leave and bored fruits per farmers’ field fell between 2-5 and 21-35, and likew...

Ecological limits and management practices of major arthropod pests of tomato in Kenya

Journal of Agricultural Science and Practice

In Kenya, tomato is cultivated for home consumption, as a cash crop, and a source of vitamins. In recent years, the growth rate of tomato production in the country has increased. Yields, however, continue to remain low due to a myriad of constraints, including incidences of arthropod pests. This paper catalogues arthropod pests of tomato in Kenya, establishes the pests' distribution patterns in relation to spatial and temporal dimensions and documents practices employed by farmers for their management. The study relies on plant health clinics as primary providers of data. Relationship between variables is proved using multinomial logistic regression. A diverse range of arthropod pests was found to hamper tomato production in Kenya. Tomato leaf miner, whiteflies, and spider mites emerged as the major threats to the sustainability of tomato production. Most of the arthropod pests reported were associated with upper and lower midland agro-ecological zones. The reverse, however, was true for upper highland zones. For the management of arthropod pests, essentially, the use of synthetic pesticides was the preferred practice by farmers. The study underscores the need to consider variations in arthropod pests' risk, both spatially and temporally when designing their management strategies. Also, alternative management procedures to the use of highly hazardous pesticides and better assessments of potential profit-loss to a smallholder for application and non-application of highly hazardous pesticides are required.

Management Practices Of Insect-Pests And Diseases Of Common Vegetable Crops Of Selected Districts Of Central And Northern Tanzania

2018

Vegetable crops are known for their enriched vitamins and essential nutrients. Vegetable production is among the main sources of income to a majority of smallholder farmers in central and northern Tanzania. Despite a number of factors affecting vegetable production, farmers’ knowledge and skills are so important towards proper management of insect-pests and diseases. This study was therefore carried out to assess the farmers’ management practices of insect-pest and diseases of common vegetable crops mainly tomatoes and sweet peppers in selected districts of semi-arid climates of central and northern Tanzania. To obtain baseline data, a socio-economic survey was carried out is the selected areas with a total of 60 respondents involved. In general, this study revealed unsustainable farming practices that resulted in notable insect-pests and diseases infestation within the farms across Dodoma Municipality, Kongwa, Babati, and Kiteto districts. Proper control and management practices we...

Identification of Tomato Insect Pests and Their Integrated Pest Management

AgriCos e-Newsletter, 2021

Tomato, Lycopersicum esculentum L. (Solanaceae), is an important vegetable crop in the Mariana Islands (Guam, Saipan, Rota and Tinian). Because tomato is heavily attacked by both the tomato fruitworm Helicoverpa armigera Hübner and the red spider mite Tetranychus marianae McGregor, research was begun in 2011 to develop an integrated pest management program to better protect the crop from these pests. Our previous studies have indicated nominal threshold levels for T. marianae to be 8-12 mites/leaf in the dry season and 8-14 mites/leaf during the wet season, while for H. armigera the threshold was found to be 2 eggs per 10 of the plants, followed by an additional pesticide application only if 2 damaged fruit or H. armigera larvae were detected per 50 immature fruits. Other studies have found the IPM package used here of petroleum spray oil (PSO), BotaniGard, neem, and DiPel applied 15, 30, 45 and 60 days after tomato transplant to be a viable approach, significantly reducing the pest complex and giving higher tomato yield compared to both the growers' current practice (carbaryl or malathion, 15 applications per cropping season) and control plots.

Assessment of leaf miner Liriomyza spp (diptera: Agromyzidae) damage on tomato and the yield output in Ilorin, Southern Guinea Savannah, Nigeria

Agrosearch

Tomato plays an important nutritional role in human diet. Although, Nigeria is the largest producers of tomato in Africa, its production is threatened by the invasive polyphagous insect pest belonging to the genus Liriomyza. An experiment was conducted to enumerate the level of damage of the agromyzid fly Liriomyza spp on the tomato variety, UC82B. Infestations were observed on potted tomato plants and studied from December 2016 to March, 2017. The experimental treatment consisted of both screen house and field trials. The experiment was laid out in a Randomized Complete Block Design with four replicates. Data were collected on the number of tomato leaves mined by larvae of the pest every week after transplanting (WAT) and on the total weight of tomato fruits harvested. Using t-test statistical analysis, results revealed that tomato plants grown in the field were the most infested by the insect pest from 5 to 10 WAT having significantly higher (P < 0.05) mean population of the pe...

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

International Journal of Science and Management Studies (IJSMS), 2019

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.

Comparison of Tomato (Lycopersiconlycopersicum Mill) Varieties to Field Insect Pest Infestations

Tomato crop is widely cultivated in Nigeria. It is prone to heavy infestation by several insect pest species which limit its production. Field experiments were conducted at Gombe State Agricultural Development trial farm, Kwadon, Gombe State in 2012 and 2013 rainy seasons. The study was laid out in a randomized complete block design with four improved tomato varieties and one local variety as treatments replicated four times. Different insect pest species were counted and recorded, plant height, mean number of branches, fruits, mean number of holes, damaged and undamaged fruits were recorded. The results indicated that improved tomato varieties Roma VFN, UTC, Leventis, and Ronita (TOM) were less susceptible to insect pest species infestations while local tomato variety was more susceptible to the pests. Improved tomato varieties used for the study had less insect pest species, produced taller plants, more branches and fruits compared to the local variety. The result further showed that improved tomato varieties were less susceptible to Helicoverpaarmigera damage, hence the lower mean number of holes, damaged fruits and higher undamaged fruits compared to the local tomato variety which had higher mean number of holes, damaged fruits and lower undamaged fruits per plant. The use of improved varieties by poor resource tomato farmers will increase tomato production in Nigeria. Tomato farmers in the study area should be advised to adopt the use of improved tomato varieties for cultivation.

Control of Insect Pests Attacking Tomato Crops in District Bajaur, Khyber Pakhtunkhwa

JOURNAL OF WEED SCIENCE RESEARCH, 2021

Tomato plant (Lycopersicon esculentum) is a widely cultivated vegetable crop. The plant is economically very important. To ensure a successful and economically viable harvest, it is essential that all aspects of its production to be monitored. At present, there is a limited scientific data regarding the use of pesticides in relation to the seasonal incidence of insect pests in the Bajaur district of Pakistan. This study was carried out at a local farm, where the efficacies of Flurofenafire pesticide were examined. The pesticide Flurofenafire was applied once a week to examine its efficacy. The stability of the pesticide was highly dependent on the weather. The occurrence of rain within 24 hours of spraying resulted in Aphid, Jassid, White fly, Thrips and Fruit borer infestations. Aphid infestations were observed on the tomato crop in May 2019, which peaked in July. Bemisia Tabaci infestations peaked in August. Amrasca Biguttula populations peaked in September 2019. Scirtothrips dors...

Insect Pest Associated With Tomato In Local Vegetable Markets Of Sindh, Pakistan

International Journal of Applied Sciences and Biotechnology, 2019

Study was carried out on “Insect pests associated with tomato in local vegetable markets of Sindh, Pakistan” during November and December 2018. The insect pests’ infested-tomatoes are also sold in local vegetable markets and consume by people in Sindh, Pakistan. In present study was seen that the tomato fruit borer (caterpillar) fed symptoms, it had holed and bored, starting where the stem is attached to the fruit and these were ripped tomatoes and red colour. Insect infested tomatoes were collected; the thickness, length, the holes and inner fruit (interior) portions of the fruit damaged by the larvae were also measured and examined. A random selection of 30 vegetable vendor shops was selected in each city of Sindh. The largest pest infested tomato fruit was 30,120, the minimum was 2, 2 from the stock of 5, 5 kg, and 4, 7 green vegetable vendor shops there no pests found in tomato fruits. Overall, 243,995 insect-infested tomatoes were found in 305,515 kg, 30, 30 vegetable vender sh...