https://journalcjast.com/index.php/CJAST/issue/feed Current Journal of Applied Science and Technology 2021-05-10T13:42:53+00:00 Current Journal of Applied Science and Technology contact@journalcjast.com Open Journal Systems <p style="text-align: justify;"><strong>Current Journal of Applied Science and Technology (ISSN:&nbsp;2457-1024)</strong> is dedicated to publish research papers, reviews, case studies and short communications from all disciplines of science and technology. By not excluding papers on the basis of subject area, CJAST facilitates the research and wishes to publish papers as long as they are technically correct and scientifically motivated.</p> https://journalcjast.com/index.php/CJAST/article/view/31345 Model Validation of Aqua Crop for Brinjal (Solanum melongena) Crop at Madakasira Region, Anantapur District, Andhra Pradesh 2021-05-10T13:42:53+00:00 P. Sivamma N. Naga Hari Sairam sairam.nethi@gmail.com G. Raghavendra M. Muralee Krishna S. V. Swapna Priya . Sampath . Venkanna <p>Crop simulation models plays a vital role for estimating the effects of soil, water, nutrients on grain and biomass yields and water productivity of different crops. Among the various crop simulation models, Aqua Crop model was adopted for the predicting the crop water requirement in the Madakasira region, Anantapur district, Andhra Pradesh. The Brinjal crop was selected for the study and was irrigated through two different methods i.e., drip and flood irrigation. The model generated the crop yield and crop water requirement for the drip and flood irrigation of Brinjal crop was compared with the actual field results of crop yield and crop water requirement. The simulated crop yield and crop water requirement for the Brinjal crop under flood irrigation was 5.23 t/ha and 326 mm. The actual crop yield and crop water requirement for the Brinjal crop under flood irrigation was 4.2 t/ha and 335 mm. The simulated crop yield and crop water requirement for the Brinjal crop under Drip irrigation was 5.76 t/ha and 318.3 mm.&nbsp; The actual crop yield and crop water requirement for the Brinjal crop under drip irrigation was 4.8 t/ha and 290 mm.&nbsp; From the results, it was clear that the model simulated the actual conditions of the crop. The benefit cost ratio was done for the experimental field data which clearly shows that the crop yield under drip irrigation has achieved the higher cost benefit ratio. Therefore, Aqua Crop model was suitable for simulating the crop conditions under any circumstances.</p> 2021-05-10T00:00:00+00:00 ##submission.copyrightStatement## https://journalcjast.com/index.php/CJAST/article/view/31343 Load Deflection and Ultimate Strength Properties of Sandwich Lightweight Foamed Concrete Panels 2021-05-08T08:38:17+00:00 Alonge O. Richard olarichy07@usm.my Opatade J. Adeolu Olusola Ololade Afolake <p>The interaction that exists between two wythes of concrete, inner and outer, goes a long way to establish the structural behavior of the whole components and particularly, lightweight foamed concrete sandwich panel. Precast concrete sandwich panel (PCSP) has become a household name since it has been utilized in the construction of structural shell in some building types. This research investigated the load deflection of six different lightweight foamed concrete panels. The six panels were produced using a foamed concrete mix of the same density and the mechanical properties of the mix were tested. Each panel consists of two withes (facings) made of lightweight foamed concrete and polystyrene was used as the core and the insulation layer. Mild steel wire mesh of 6mm sizes was used as reinforcement in three of the panels while 9mm diameter high yield steel was used in the remaining three panels. The reinforcement in both facing was tied together using shear and bend to an angle of 45<sup>0</sup>.End crushing of the panels was avoided using concrete capping. An axial load test was conducted, the load deflection, mode of failure and crack patterns of the panels was observed. The result also revealed that panels with concrete capping deflect along with their Wythe in the same directions and small deflection was recorded in panels with concrete capping. Cracking modes in panels reinforced with 6mm mild steel were controlled by material failure while those in panels with 9mm high yield steel, cracks was only observed at the lower part of the capping.</p> 2021-05-08T00:00:00+00:00 ##submission.copyrightStatement## https://journalcjast.com/index.php/CJAST/article/view/31344 Validation of Aqua Crop 5.0 Model for Okra (Abelmoschus esculentus) Crop at Madakasira Region, Anantapur District, Andhra Pradesh 2021-05-10T13:34:33+00:00 P. Sivamma N. Naga Hari Sairam sairam.nethi@gmail.com G. Raghavendra M. Muralee Krishna S. V. Swapna Priya . Sampath . Venkanna <p>Crop simulation models were developed to estimate the effects of soil, water, nutrients on grain and biomass productivity and water consumption in different crops. In this study, the Aquacrop model was adopted to predict the volume of water consumed by crops in the Madakasira region, Anantapur district, Andhra Pradesh. The culture of okra was selected for the study, using two irrigation methods: flood and drip. The model estimated the productivity of the crop and the amount of water needed for drip irrigation and flooding in that crop. the results were compared with field productivity, and their respective water requirements, and demonstrated yields of 4.3 t / ha in the flood irrigation system, with average water consumption of 326.6 mm / day, and in the field these values ​​were 3.5 t / ha average water consumption of 386 mm / day. And when using the drip irrigation system, the results obtained were: 5.2 t / ha with water consumption in the order of 320 mm / day, in comparison to the field crop that was 4.3 t / ha, consumption water of 300 mm / day. From the results, it was clear that the model simulates the real conditions of the culture. The cost-benefit ratio was made for experimental field data that clearly show that the yield of the crop under drip irrigation has reached the highest cost-benefit ratio. Therefore, the Aquacrop model was adequate to simulate the conditions of the crop in any circumstances.</p> 2021-05-10T00:00:00+00:00 ##submission.copyrightStatement##