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 Use of In vitro Technique in Predicting In vivo Response of Poultry to Enzyme Supplementation <p>The need for rapid test in evaluation of feedstuffs in poultry nutrition cannot be overemphasized. Such test must however be able to replace exactly the response in the animal concern. This study was conducted to determine the suitability of <em>In vitro</em> technique in predicting the <em>In vivo</em> response of poultry to enzyme supplemented feedstuffs. Rice husk was used in a Completely Randomized Design with individual and cocktail of enzymes for both <em>In vitro</em> and <em>In vivo</em> trials. Three exogenous enzymes namely a xylanase, a multipurpose and a phytase were used individually, pairwise and altogether with the feedstuff to constitute the treatments namely T1, T2, T3, T4, T5, T6, T7, and T8. Each treatment was replicated thrice for both <em>In vitro</em> and <em>In vivo</em> trials. The <em>In vitro</em> trial was done to simulate the chicken digestive system while the <em>In vivo</em> trial was done using the intubation method. Parameters measured for both trials were digestibility values for dry matter, crude protein, ether extract, crude fiber and fiber fractions. All data collected were statistically analyzed using Analysis of Variance procedure and treatment means were separated using Duncan Multiple Range Test. Correlation analysis was carried out to compare the results of both trials.&nbsp; Results show that enzymes individually and as cocktails significantly improved the digestibility of parameters for both <em>In vitro</em> and <em>In vivo</em> trials. Cocktails of enzymes were significantly better than the individual enzymes for dry matter and crude fiber digestibility for both <em>In vitro</em> and <em>In vivo</em> trials. Correlation analysis shows positive correlation (r=0.99, r=0.96, r=0.94, r= 0.86, r=0.78) between <em>In vitro</em> and <em>In vivo</em> trials in most of digestibility values for the rice husk. It was concluded that<em> In vitro</em> trial can be used as both criterion and replacement for <em>In vivo</em> trial when determining the efficacy of exogenous enzymes in poultry nutrition.</p> Abdulhameed Jimoh Job Olutimehin Atteh ##submission.copyrightStatement## 2020-10-29 2020-10-29 1 10 10.9734/ajaar/2020/v14i330131 Determination of the Development Performances of Pecan Saplings in Aydin ecological Conditions <p>In this research, the sapling growth performances of Pecan cultivation in Aydın ecological conditions were investigated. "Burkett" Pecan rootstock and "Mahan14", "Wichita7" and "Choctaw2" pecan cultivars were used. Starting from the date of planting; Sapling stem diameters were measured 5 cm above the graft site. Diameters of rootstocks was measured 5 cm below the graft site,&nbsp; bud burst dates are determined (min %70 of buds),&nbsp; shoot diameters were measured at 15-day intervals from the place after the first two buds. Shoot lengths were measured at 15-day intervals. The measurements were carried out for 2 consecutive years. Repeared Measures Anova is used to determine whether there are significant differences in the data. The development difference between cultivars in both regions was investigated. In the analysis, averages of five replicate measurements in two years and 12 different periods. Pecan saplings showed a good development in the ecological conditions of Aydin (37°45′ 0″N - 28°0′0″E). These results show that in the province of Aydın, Pecan cultivation can be done except in very cold and very dry places. However, the study should be supported by future fruit productivity studies. The present research findings will be useful for regions with similar climatic conditions.</p> Oguz Dolgun F. Ekmel Tekıntas Suleyman Bayram Temur Kurtaslan ##submission.copyrightStatement## 2020-11-13 2020-11-13 11 19 10.9734/ajaar/2020/v14i330132 The Response of Fordhook Giant / Swisschard (Beta vulgaris var Cicla) and Mustard (Brassica Juncea) Spinach Vegetables to Irrigation with Saline Water <p>Saline irrigation water is becoming an important water source as fresh water is fast becoming a scarce resource in many areas of the world, including Eswatini, especially in arid and semi-arid regions.&nbsp; A study to test the response of two varieties of spinach (fordhook giant and mustard) to salinity was conducted in a field pot experiment at the Faculty of Agriculture at the Luyengo Campus of the University of Eswatini.&nbsp; The treatments were laid in a randomized block design (RCBD).&nbsp; The experiment consisted of four treatments, each replicated twelve times.&nbsp; Treatments were salinity levels of 0.0 dS/m, 1.5 dS/m, 2.0 dS/m and 3.5 dS/m.&nbsp; All the treatments were subjected to similar agronomic practices. Spinach was grown and observed for a period of five weeks.&nbsp; Plant height was measured and the number of leaves counted weekly throughout the experiment. Significant differences (P &lt; 0.05) between salinity treatments were obtained for plant height beginning in week 2 but were more pronounced in week 3, 4 and week 5.&nbsp; No significant differences were obtained for the number of leaves.&nbsp; There were however, clear significant differences between spinach irrigated with none saline irrigation water compared to saline irrigation water.&nbsp;&nbsp; It was concluded that irrigating spinach with saline water of more than 2.0 dS/m drastically reduce plant growth but not the number of leaves under the conditions of the experiment.</p> M. V. Dlamini M. T. Masarirambi ##submission.copyrightStatement## 2020-11-21 2020-11-21 20 26 10.9734/ajaar/2020/v14i330133 Evaluation of Host Stinging Behavior of the Larval Ectoparasitoid Diglyphus isaea on Some Selected Host Plants <p><strong>Background:</strong> In parasitoid insects, beside parasitism, there are two other behaviors that may increase leaf miner mortality: Feeding on the host (host feeding) and, host penalization without oviposition or feeding (host stinging).</p> <p><strong>Objectives:</strong> The present study aimed to evaluate (host stinging) behavior of the larval ectoparasitoid <em>D. isaea</em> in field on some selected host plants.</p> <p><strong>Methods:</strong> The present study was carried out in Alejelat region. Four selected host plants were studied, chick pea (<em>Cicer arietinum</em>) and broad bean (<em>Vecia faba</em>) as a Winter host plants and, Cow pea (<em>Vigna unguiculate</em>) and kidney bean (<em>Phaseolus vulgaris</em>) were selected as summer host plants during the growing seasons 2018 and 2019. Samples were kept in plastic bags and transferred to be examined in the laboratory. Number of living <em>L. trifolii</em> larvae, and number of killed larvae according to feeding (no oviposition) by <em>D. isaea</em> were counted and recorded.</p> <p><strong>Results:</strong> On cow pea host stung larvae recorded (156 individuals/ 100 infested leaflets) occurred in 10<sup>th</sup> of August, with (r = +0.69**) between host stung larvae and the population of <em>L. trifolii</em> recorded). On kidney bean host stung larvae recorded (101 individuals/ 100 infested leaflets) occurred in 24<sup>th</sup> of August, with (r = + 0.85**) value between host stung larvae and the population of <em>L. trifolii</em> recorded. On the other hand, the percentage of host stung larvae ranged between (5.67% and 28.22%) and (15.88% and 42.30%) for cow pea and kidney bean respectively. On broad bean host stung larvae recorded (159 individuals/ 100 infested leaflets), with (r = +0.59*) between host stung larvae and the population of <em>L. trifolii</em> .On chick pea host stung larvae recorded (82 individuals/ 100 infested leaflets) with (r = +0.20<sup>ns</sup>) between host stung larvae and the population of <em>L. trifolii</em>. On the other hand, percentages of host stung larvae ranged between (8.45% and 36.60%) and (21.80% and 87.65%) for broad bean and chick pea respectively.</p> <p><strong>Conclusion:</strong> The highest percentage of host stung larvae recorded on chick pea 44.65% followed by kidney bean 24.21%, broad bean 18.45% and cow pea 12.97% respectively. On the other hand, the correlation coefficient value (r) between numbers of <em>L. trifolii</em> larvae and, host stung larvae recorded the highest on kidney bean +0.85** followed by cow pea +0.69**, Broad bean +0.59* and Chick pea +0.20<sup>ns </sup>&nbsp;respectively.</p> Alansary R. Elkhouly Husen A. Shafsha Almabruk A. Al Hireereeq ##submission.copyrightStatement## 2020-11-21 2020-11-21 27 33 10.9734/ajaar/2020/v14i330134 Models Establishment for Predicting Interaction between Tillage Practices and Some Selected Engineering Properties of Cassava (Manihot esculenta) Tubers <p>Enough technical data on the physical and mechanical properties of tubers are needed for machine design and crop parameters in modeling and designing cassava processing. The main objective of this study was to establish models for forecasting interaction between the tillage practices and some physical and mechanical properties of cassava tubers. Eight tillage practices have been used and are coded in alphabets such as, ploughing + harrowing (A); ploughing + harrowing + ridging (B); manual ridging (C); flat manual clearing (D); ploughing + harrowing + manual digging to a depth of 30 cm + 10 cm of saw-dust placed at the base (E); ploughing + harrowing + ridging +10 cm of saw-dust placed at the base (F); manual ridging + 10 cm of saw-dust placed at the base (G) and manual digging to a depth of 30 cm + 10 cm of saw-dust placed at the base (H). The experiment was conducted in TME (Tropical <em>Manihot esculenta</em>) 419 with two soil conditions using recommended nutrient dosage. The experimental design was split-split plot design with three replications. The physical and mechanical properties of cassava were determined 10 months after planting using standard equations and methods. Statistical Package for Social Science window 21 versions was used for data analysis. Models were developed using Linear Regression. Manual Ridging + 10 cm Sawdust placed at the base + TME 419 + Rainfed + 933.75 kg/ha of NPK 15:15:15 fertilizer tillage practice gave the highest yield of 15.02 tons/ha with uniform physical and mechanical properties. The model equations revealed that tillage had positive impact on the selected physical and mechanical properties of cassava tubers such as length, width, thickness, size, aspect ratio, surface area, sphericity, roundness, unit mass, unit volume, true density, bulk mass, bulk volume, bulk density, porosity, angle of repose, coefficient of static friction, compressive extension at break, compressive strain at break, compressive load at break, compressive stress at break, energy at break, modulus automatic, compressive load at yield, compressive extension at yield, and compressive strain at yield and compressive stress Models developed could be used by engineers in designing improved equipment and machineries for harvesting and processing of cassava tubers into useful products.</p> O. A. Adetola O. J. Olukunle A. P. Olalusi O. O. Olubanjo ##submission.copyrightStatement## 2020-11-23 2020-11-23 34 48 10.9734/ajaar/2020/v14i330135