PRELIMINARY SURVEY ON OCCURRENCE OF APHIDS, THRIPS LEAF MINER IN TOMATO GROWING AREAS IN MOROGORO REGION TANZANIA
DOI:
https://doi.org/10.29121/granthaalayah.v7.i7.2019.675Keywords:
Tomato, Aphids, Thrips, Leaf MinerAbstract [English]
Tomato (Lycopersicum esculentum L.) is one of the important crop in East Africa as a source of food, income and export. Occurrence of different pest including indigenous and alien in tomato fields are considered as a major threat pests to tomato growers. Worldwide pest problems in horticultural investment need to be considered carefully as their presence increase cost of production. Despite of this information in Tanzania there has been little research to update pest list infesting our tomatoes. The study was conducted in Morogoro region in Kauzeni and Bigwa wards whereby farmers grow different varieties of tomatoes. Farmers spray different fungicides and pesticides twice per week to manage different pests. The selected fields were located at S 04˚47ʹ41.7ʹʹ, E 038˚13ʹ11.8ʹʹ and S 06˚53ʹ38.3ʹʹ, E 037˚36ʹ07.4ʹʹ Random sampling using “W” Pattern was used to get representation of the fields. Occurrence of pest population was estimated from ten plants during 2018/19, searching from young, middle and older leaves. Insect specimens were collected using fine forceps, aspirators, and preserved in ethanol 70% for laboratory identification.
The results showed no aphids were detected from frequent sprayed tomato fields, other pests observed include the white flies with mean (57) individuals per plant, followed by leaf miner (70) and the highest number was thrips representing (107) Mean population comparison showed a significant differences P< 0.005. Understanding occurrence of different pests in tomato growing areas could assist in planning sustainable Integrated Pest Management programme in tomato growing areas.
Downloads
References
Anang, B.T., Zulkarnain Z.A. and Yusif S. (2013) Production constraints and measures to enhance the competitiveness of the tomato industry in Wenchi municipal District of Ghana. American Journal of Experimental Agriculture 3(4): 824-838 DOI: https://doi.org/10.9734/AJEA/2013/4373
Bliev U. K., Martynov A. N., Zarkov A. V. and Maximova L. I. (1985). Effect of Verpa preparation on the fertilityof soddy podzolic soil. Agrochimica 2: 97–100
Desneux, N., Luna, M.G., Guillemaud, T. & Urbaneja, A. (2011). The invasive South American tomato pinworm,Tuta absoluta, continues to spread in Afro-Eurasia and beyond: the new threat to tomato world production.Journal of Pest Science84: 403–408 DOI: https://doi.org/10.1007/s10340-011-0398-6
De Oliveira CM, Junior CV, Maluf RW, Neiva PI, Maciel MG (2012). Resistance of tomato strains to the moth Tuta absoluta imparted by allelochemicals and trichome density. Ciência e Agrotecnol. 36:45-52 DOI: https://doi.org/10.1590/S1413-70542012000100006
Graham-Bryce I. J. (1981). The behaviour of pesticides in soil. In The Chemistry of Soil Processes. (D. J. Greenland and M. H. B Hayes, ed.) John Wiley and Sons Ltd
Grandillo, S., Zamir, D. & Tanksley, S.D. (1999) Genetic improvement of processing tomatoes: A 20 years perspective. Euphytica 110: 85–97 DOI: https://doi.org/10.1023/A:1003760015485
Gray, Q., Abu, T. and Teddy, T. (2013). Tomato Production in Ethiopia Challenged by Pest. GAIN Report Number: 1305.
Korycinska A, Moran H (2009). South American tomato moth (Tuta absoluta): plant pest factsheet. Sand Hutton, York, UK: FERA.
Lietti MM, Botto E, Alzogaray RA, (2005). Insecticide resistance in Argentine populations of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae). Neotrop. Entomol. 34:113-119 DOI: https://doi.org/10.1590/S1519-566X2005000100016
Palmer JM. (1987) Megalurothrips in the flowers of tropical legumes: a morphometric study. In: Holman J, Pelikan J, Dixon AFG, Weismann L. (Eds). Population structure, genetics and taxonomy of aphids and Thysanoptera. The Hague (SPB Academic Publishing): 480-495.
Silva GA, Picanco MC, Bacci L, Grespo AL, Rosado JF, Guedes RN (2011). Control failure likelihood and spatial dependence of insecticide resistance in the tomato pinworm, Tuta absoluta. Pest Manage. Sci. 67:913-920 DOI: https://doi.org/10.1002/ps.2131
Downloads
Published
How to Cite
Issue
Section
License
With the licence CC-BY, authors retain the copyright, allowing anyone to download, reuse, re-print, modify, distribute, and/or copy their contribution. The work must be properly attributed to its author.
It is not necessary to ask for further permission from the author or journal board.
This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.
