Asian Journal of Advances in Agricultural Research <p style="text-align: justify;"><strong>Asian Journal of Advances in Agricultural Research (ISSN: 2456-8864)</strong> aims to publish high quality papers (<a href="/index.php/AJAAR/general-guideline-for-authors">Click here for Types of paper</a>) in the field of agricultural science. This journal facilitates the research and wishes to publish papers as long as they are technically correct, scientifically motivated. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer reviewed, open access INTERNATIONAL journal.</p> SCIENCEDOMAIN international en-US Asian Journal of Advances in Agricultural Research 2456-8864 Efficacy of Trichoderma Fortified Organic Amendments on Fusarium Wilt Suppression, Growth and Yield of Eggplant <p><em>Trichoderma</em> <em>harzianum</em> is commonly used as effective biological control agent against phytopathogens especially the soil-borne fungi while some isolates are able to ameliorate plant growth. In the present study, <em>Trichoderma</em> fortified with different organic amendments were evaluated to reduce the pre-emergence and post-emergence seedling mortality, diseases of stem and root of eggplant caused by <em>Fusarium oxysporum</em> f. sp. <em>melongenae</em>, a soil-borne fungal pathogen. Two experiments were set up, one at pot culture and second in the field under natural epiphytotic conditions. Among the nine <em>Trichoderm harzianum</em> fortified amendments tested, neem seed cake recorded significant and superior effect as pre-sowing soil application against <em>Fusarium</em> wilt with respect to seed germination (92.33%), pre-emergence seed rot (7.66%) and post-emergence seedling mortality (15.33%) in pot culture. However, cotton cake recorded least efficacy in all respect. Similar trend observed in wilt incidence under field experiments during <em>autumn </em>2018 (17.47%) and 2019 (18.60%) with <em>T. harzianum</em> fortified neem cake soil application against <em>Fusarium</em> wilt with mean inhibition of disease incidence (58.43%) and also observed excellent enhancement of mean yield (54.63%). It is observed that organic amendment at higher concentrations further increase the microbial populations and stimulate the microbial activity in soil against <em>Fusarium</em><em> oxysporum</em> resulted to decrease the pathogen populations. Moreover, yield and yield related attributes increased remarkably due to fortified amendments providing adequate nutrient reservoir to the bioagents thereby enhancing its survival in a hostile environment.</p> V. Govardhan Rao D. N. Dhutraj K. D. Navgire K. T. Apet ##submission.copyrightStatement## 2021-07-17 2021-07-17 1 16 10.9734/ajaar/2021/v16i130163 Evaluation of Synthetic Insecticides for the Management of Helicoverpa Armigera Mill in Tomato Production <p>This study was conducted to evaluate the efficacy of synthetic insecticides in managing <em>Helicoverpa armigera </em>Mill in tomato production. The experiment was conducted during the major and minor tomato growing seasons at the Sekyere Kumawu and Asante Akim North districts in Ghana. The experimental design was a 3 x 5 factorial randomized complete block with four replications. Four insect pest control regimes were evaluated for their effectiveness in controlling the tomato fruit borer. Three tomato varieties were used in this experiment. The results showed that, significantly, higher marketable fruit yields were obtained on the sprayed plots than the control plots. In general, the variety “pectomec” suffered the highest yield loss on the water sprayed field, followed by UC 82 and lastly, power rhino, although all the varieties suffered losses greater than 50%. This shows that none of the varieties used for this study is completely resistant to <em>Helicoverpa armigera</em>. Yields were generally higher in the major season (March-July) than in the minor season (September-December) for pectomec and power rhino. The best insecticides are Oxymatrin (2.4%), Lambda-cyhalothrin (2.5%) and Dimethoate (400g/l) +Cypermethrin (36g/l) in descending order. Contrarily, UC 82 had low yields in the major season than in the minor season. The study recommends that <em>Helicoverpa armigera </em>Mill should be controlled with pesticides to improve yields of tomato.</p> John Manu J.V.K Afun ##submission.copyrightStatement## 2021-07-24 2021-07-24 17 28 10.9734/ajaar/2021/v16i130164