Asian Research Journal of Agriculture <p style="text-align: justify;"><strong>Asian Research Journal of Agriculture (ISSN: 2456-561X)</strong> aims to publish high quality papers (<a href="/index.php/ARJA/general-guideline-for-authors">Click here for Types of paper</a>) in 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 Research Journal of Agriculture 2456-561X Evaluation of Fungicide against Taro Leaf Blight Disease Caused by Phytophthora colocasiae in Three Agro-Ecological Zones of Cameroon <p>Globally the taro leaf blight (<em>Phytophthora colocasiae)</em>&nbsp;disease causes between 50 to 70% yield loss. Four taro landraces were planted in three agroecological zones of Cameroon; the Western Highlands (Bambui), Mono-Modal Humid Forest (Ekona), and the Bimodal Humid Forest (Nkolbisson) and evaluated for taro blight severity in four successive growing seasons in March and July, 2018 and 2019.&nbsp;Different concentrations of copper oxide (600 g)–Metalaxyl (120 g) fungicide were applied to control taro blight before and during plant growth. Results showed that, in all the field sites, the disease severity of <em>Phytophthora colocasiae</em> greatly decreased below 1.5 with varying concentrations of copper oxide (600 g)–Metalaxyl (120 g) fungicide applied at two-week intervals. The control field at Ekona recorded the highest taro blight severity of 7.8.&nbsp;There was no significant difference in taro blight severity (<em>P</em>≤0.05) between landraces treated with the different concentrations of copper oxide (600 g)–Metalaxyl (120 g) fungicide. Therefore, lower concentrations (0.33% and 0.27%) of copper oxide (600 g)–Metalaxyl (120 g) can be effectively used in the pre and post control of taro blight in the field. All the landraces in the screen house experiments were susceptible to&nbsp;<em>P. colocasiae</em>.&nbsp;&nbsp; In all the zones, Landrace L2 (red petiole small leaves) was highly resistant to <em>P. colocasiae </em>and should be recommended to farmers for optimum taro production in the three agro-ecological zones and zones with similar characteristics.</p> Manju Evelyn Bi Ache Neh Teke Suh Christopher Mbong Grace Annih Fokunang Charles ##submission.copyrightStatement## 2020-11-07 2020-11-07 1 12 10.9734/arja/2020/v13i330102 Investigating the Growth and Yield of Upland Rice Using Application of Trichocompost and NPK Fertilizers at Dry Land <p>Upland rice production at South Sumatra is still low compared to national average production level due to low soil fertility. Therefore, effort to increase soil fertility level is needed such as through application of <em>Trichocompost</em> and NPK fertilizers at dry land area. This research objective was to determine the application effect of <em>Trichocompost</em> produced from rice straw and NPK fertilizers on the growth and yield of upland rice crop of henic strain at dry land area. The methods used in this research was a 2 by 3 Factorial in Completely Randomized Design with two treatment factors and three replications for each treatment. <em>Trichocompost</em> fertilizer treatments (T) were consisted of: T0 (without <em>Trichocompost: </em>0 ton/ha; T1: 10 ton/ha <em>Trichocompost</em>; T2: 20 ton/ha <em>Trichocompost </em>and T3: 30 ton/ha <em>Trichocompost</em>, whereas NPK fertilizer treatments (P) were consisted of: P1: 200 kg NPK/ha; P2: 300 kg NPK/ha and P3: 400 kg NPK/ha. All data from this research was analyzed using Analysis of Variance to determine the given treatment effect by using SPSS 17.0 software.&nbsp; The results showed that application of <em>Trichocompost</em> produced from rice straw and NPK fertilizers had effect on the growth and yield of upland rice of henic strain at dry land area. Application of <em>Trichocompost</em> fertilizer produced from rice straw at dose of 30 ton/ha and NPK fertilizer at dose of 400 kg/ha tend to produce higher rice yield with magnitude of 4.6 kg/plot than that of other treatments.</p> . Novriani . Gribaldi . Nurlaili Nurmala Dewi Firnawati Sakalena ##submission.copyrightStatement## 2020-11-27 2020-11-27 13 19 10.9734/arja/2020/v13i330103