ASEAN Journal of Scientific and Technological Reports最新文献_第3页

Properties of Biochar from Coconut Waste and Application in Agriculture 椰子废弃物生物炭的性质及其在农业上的应用

ASEAN Journal of Scientific and Technological Reports Pub Date : 2023-03-21 DOI: 10.55164/ajstr.v26i1.247574

P. Dittakit, Junya Singkham, Wanalai Viriyasuthee, K. Sangmanee

{"title":"Properties of Biochar from Coconut Waste and Application in Agriculture","authors":"P. Dittakit, Junya Singkham, Wanalai Viriyasuthee, K. Sangmanee","doi":"10.55164/ajstr.v26i1.247574","DOIUrl":"https://doi.org/10.55164/ajstr.v26i1.247574","url":null,"abstract":"Coconut plantation waste was in massive quantities affecting the environment in the community. Hence, the coconut plantation was charcoal full of carbon. The objective of this research was to study the properties of biochar from coconut plantation waste and the consequences of adopting biochar to mix with organic fertilizer on the growth and lettuce productivity by analyzing the physical and chemical properties of biochar from coconut plantation waste. The organic fertilizer mixed with the biochar on lettuce growth and productivity was investigated by three treatments no application of organic fertilizer (control), the application of organic fertilizer, and the application of organic fertilizer added with potassium humate. The result showed that the highest level of biochar from coconut shells had the total density, total porosity, water holding capacity, C/N ratio, and humidity at the highest level, equaling 0.58 gram/cubic centimeter, 56.50%, 54.25%, 67%, and 2.41%, respectively. The biochar from the coconut leaves had the highest air gap, pH, conductivity, organic carbon, phosphorus, calcium, and magnesium quantity, respectively (13.50%, 9.90, 2.34 dS/m, 58.94%, 0.12%, 1.25%, and 2.26%, respectively). The biochar from the fallen young coconut fruits had organic matter, cation exchange, nitrogen, and phosphorus quantity at the highest level: 72.37%, 36.19 cmol/kg, 0.57%, and 2.11%, respectively. The results of the organic fertilizer mixed with biochar and Potassium Humate added formula led to the growth and productivity in all 3 types of lettuce more than not applying organic fertilizers (p<0.05).","PeriodicalId":426475,"journal":{"name":"ASEAN Journal of Scientific and Technological Reports","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133060357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Frequency Analysis of High Amplitude δ Scuti Star V593 Lyr by American Association of Variable Stars Observers International Database 美国变星观测者协会国际数据库对高振幅δ Scuti星V593 Lyr的频率分析

ASEAN Journal of Scientific and Technological Reports Pub Date : 2023-03-21 DOI: 10.55164/ajstr.v26i1.247847

N. Chehlaeh, T. Promfu, Nusreen Masae

{"title":"Frequency Analysis of High Amplitude δ Scuti Star V593 Lyr by American Association of Variable Stars Observers International Database","authors":"N. Chehlaeh, T. Promfu, Nusreen Masae","doi":"10.55164/ajstr.v26i1.247847","DOIUrl":"https://doi.org/10.55164/ajstr.v26i1.247847","url":null,"abstract":"The new results of light variability and frequency analysis of a high amplitude δ Scuti star (HADS) V593 Lyr were reported. δ Scuti-type variable stars are fascinating short-period stars with luminosity classes from III to V and spectral types from A0 to F6. Their location on the Hertzsprung-Russell (H-R) diagram is in the classical cepheid instability strip. The photometric data in the V filter and clear filter of V593 Lyr were collected from the American Association of Variable Stars Observers (AAVSO) international database. Discrete Fourier transformation and pre-whitening methods were used in the Period04 package to examine time-series light curve data. During 15 observational nights, we obtained 28 times of new light maxima magnitude variability and significant pulsation frequencies for the star. The study found that the fundamental frequency of V593 Lyr is 9.7894180 ± 0.0000002 d−1, corresponding to the main pulsation period of about 0.1021511 d and detected its second to fifth harmonics with a signal-to-noise ratio (S/N) of more than four. A study of the pulsation frequencies and period change of HADS stars can estimate their pulsation modes and evolution. Moreover, HADS stars are suitable targets for understanding asteroseismology, which is the subject that applies a star's pulsations to investigate its internal structure, and the high amplitude stars provide reference points for calculating cosmic distances in the Universe.","PeriodicalId":426475,"journal":{"name":"ASEAN Journal of Scientific and Technological Reports","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134536907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Nutrient Digestibility and Metabolizable Energy of Yeast-Fermented Acacia mangium Leaf by Japanese Quails 鹌鹑对酵母发酵马洋槐叶营养物质消化率和代谢能的评价

ASEAN Journal of Scientific and Technological Reports Pub Date : 2023-03-21 DOI: 10.55164/ajstr.v26i1.247548

S. Lerdsuwan, D. Pisuttharachai, W. Nalinanon

{"title":"Evaluation of Nutrient Digestibility and Metabolizable Energy of Yeast-Fermented Acacia mangium Leaf by Japanese Quails","authors":"S. Lerdsuwan, D. Pisuttharachai, W. Nalinanon","doi":"10.55164/ajstr.v26i1.247548","DOIUrl":"https://doi.org/10.55164/ajstr.v26i1.247548","url":null,"abstract":"The nutrient digestibility and the metabolizable energy (AME) of Acacia mangium leaf (AM) and yeast-fermented AM (YFAM) by Japanese quails were investigated. Fifty-four of 4-weeks-old Japanese quails were divided into 3 groups with six replications of three quails. Each quail was randomly fed with an experimental diet composed of dextrose (protein-free diet for determining endogenous excretion) 40 % AM and 40% YFAM. The quails were raised individually in a metabolic cage, where feed and water were provided ad-libitum. Both feed intake and feces weight were recorded. Experimental diets and excreta were sampled and subjected to proximate analysis for gross energy. The results of nutrient composition indicated that the fermentation AM with yeast highly significantly increased (P<0.01) dry matter (DM), ash, and nitrogen-free extractives (NFE) content but decreased (P<0.01) crude protein (CP), crude fiber (CF), and gross energy (GE) content. In addition, the birds fed dietary YFAM compared with AM showed significantly increased (P≤0.01) DM, organic matter (OM), CP, and GE digestibility but decreased (P≤0.01) EE and CF digestibility. The protein utilization of birds fed dietary YFAM showed significantly greater (P≤0.01) FI, protein retained, protein intake, net protein utilization (NPU), and AME than those fed dietary AM. In conclusion, the fermentation of AMLM with yeast improved nutrient composition and enhanced the digestibility of nutrients, protein utilization, and AME of AMLM in Japanese quail.","PeriodicalId":426475,"journal":{"name":"ASEAN Journal of Scientific and Technological Reports","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116566757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Pre-harvest Periods by Replacing Nutrient Solution with Tap Water on Nitrate and Quality in Hydroponic Lettuce 采前期自来水替代营养液对水培莴苣硝酸盐和品质的影响

ASEAN Journal of Scientific and Technological Reports Pub Date : 2023-03-21 DOI: 10.55164/ajstr.v26i1.247666

Eaknarin Ruangrak, N. Salaemae, Somnuek Sornnok, N. Htwe

{"title":"Effect of Pre-harvest Periods by Replacing Nutrient Solution with Tap Water on Nitrate and Quality in Hydroponic Lettuce","authors":"Eaknarin Ruangrak, N. Salaemae, Somnuek Sornnok, N. Htwe","doi":"10.55164/ajstr.v26i1.247666","DOIUrl":"https://doi.org/10.55164/ajstr.v26i1.247666","url":null,"abstract":"Lettuce (Lactuca sativa L.) is a high-value nutritional food for human consumption, rich in minerals and vitamins. However, people are still concerned about the residues of nitrate content in hydroponic lettuce. Pre-harvesting by replacing nutrient solution with tap water is one of several factors that can help to reduce nitrate content and improve the quality of hydroponic lettuce. Therefore, this study focused on the effect of pre-harvest periods by replacing nutrient solution with tap water on nitrate and quality in hydroponic lettuce. This experiment was performed by replacing nutrient solution with tap water in a hydroponic system for 0 h, 24 h, 48 h, and 72 h before harvesting the lettuce product. Nitrate, vitamin C, phenolic, and soluble sugar contents were determined. The results showed that nitrate content was lowest under pre-harvest conditions for 72 h (19 mg/g dry weight, 63% reduction), but it was not significantly different for 48 h (20 mg/g dry weight, 61% reduction). The vitamin C content was significantly decreased after pre-harvesting for 72 h (5.3 µg/100 g, 30% reduction). The soluble sugar content was significantly increased and reached its highest content after pre-harvest for 48 h (3.3 mg/100 g, 105% increase), but there was no significant difference at 72 h (3.2 mg/100 g, 98% increase). Although the phenolic content decreased slightly, there was no significant difference among the treatments. In conclusion, nitrate contents were reduced the lowest, and soluble sugar contents were increased the highest after pre-harvest for 48 h. Vitamin C and phenolic contents were slightly decreased after pre-harvest periods by replacing the nutrient solution with tap water.","PeriodicalId":426475,"journal":{"name":"ASEAN Journal of Scientific and Technological Reports","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134499735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Study on Convective Heat Transfer and Pressure Drop Characteristics of an Alternating Cross-Section Flattened Tube with Different Twist Angle 不同扭角交变截面扁平管对流换热及压降特性实验研究

ASEAN Journal of Scientific and Technological Reports Pub Date : 2023-03-21 DOI: 10.55164/ajstr.v26i1.248061

Kunlakarn Warnropru, Jatuporn Kaew-On, Nares Chimres

引用次数: 0

Effect of Supplementation Yeast Fermented Acacia mangium Leaf in Diets on Growth Performance, Carcass Quality, and Haematology of Climbing Perch (Anabas testudineus) 饲粮中添加酵母菌马洋槐叶对攀鲈生长性能、胴体品质和血液学的影响

ASEAN Journal of Scientific and Technological Reports Pub Date : 2022-12-22 DOI: 10.55164/ajstr.v25i4.247547

W. Nalinanon

{"title":"Effect of Supplementation Yeast Fermented Acacia mangium Leaf in Diets on Growth Performance, Carcass Quality, and Haematology of Climbing Perch (Anabas testudineus)","authors":"W. Nalinanon","doi":"10.55164/ajstr.v25i4.247547","DOIUrl":"https://doi.org/10.55164/ajstr.v25i4.247547","url":null,"abstract":"A total of 360 juvenile Anabas testudineus of mean weight (2.88 ± 0.02 g/fish) were randomly distributed in triplicate of 20 fish per tank. Acacia mangium leave meal (AM) and yeast-fermented Acacia mangium leave meal (FAM) were used at 0, 2.5, 2.5, 5, 7.5, and 10 % supplemental in the experimental diets. They were fed for 12 weeks to A. testudineus fingerling stocked in 18 plastic tanks (200 liters) set up to recirculation system. Results indicated that the final body weight, weight gain, FCR, SGR, and PER were the best in treatment 4 (FAM 5.0%), significantly different (P < 0.05) from other FAM and AM treatments. There was no significant difference (P > 0.05) in HSI, FR, VSI, L*, a*, and b* across the test diets. The hematological indices' result showed no significant difference(P > 0.05) in hematocrit and red blood cells among the experimental groups. However, the thrombocyte and lymphocyte were significantly different (P < 0.05) in experimental diets FAM 5.0% and FAM 7.5% compared to AM 2.5%, FAM 2.5%, and FAM 10%. The study showed that the inclusion of yeast-fermented Acacia mangium leave meal (FAM) at 5% had the best-enhanced growth performance and feed utilization without any adverse effect on the fish carcass quality and hematological indices.","PeriodicalId":426475,"journal":{"name":"ASEAN Journal of Scientific and Technological Reports","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124683846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Acacia mangium Leaf Feed on Apparent Metabolizable Energy, Growth Performance, and Carcass Composition of Broiler Chickens 马相思叶饲料对肉鸡表观代谢能、生长性能和胴体组成的影响

ASEAN Journal of Scientific and Technological Reports Pub Date : 2022-12-22 DOI: 10.55164/ajstr.v25i4.247587

S. Lerdsuwan, W. Nalinanon, D. Pisuttharachai

{"title":"The Effect of Acacia mangium Leaf Feed on Apparent Metabolizable Energy, Growth Performance, and Carcass Composition of Broiler Chickens","authors":"S. Lerdsuwan, W. Nalinanon, D. Pisuttharachai","doi":"10.55164/ajstr.v25i4.247587","DOIUrl":"https://doi.org/10.55164/ajstr.v25i4.247587","url":null,"abstract":"The experiments were conducted to determine the apparent metabolizable energy of Acacia mangium leaf meal (AMLM) and the effect on growth performance and carcass composition of broiler chickens (Arbor acres). Twenty-four broiler chickens at the age of 24 days were divided into 2 groups with four replications of two chickens raised individually in a cage. The apparent metabolizable energy of AMLM-feeding chicken was 2,359.90 kcal/kg. Experimental diets consisted of AMLM 0%, 2.5%, 5%, 7.5%, and 10% feeding for 161 one-day-old unsexed broiler chickens and were randomly assigned to five groups with four replications of eight chickens in a completely randomized design. Feed and water were offered ad-libitum throughout the experimental period. At the age of 45 days, 2 broilers per replicate were slaughtered, and the carcass was determined. The results indicated that broiler chickens fed AMLM diets were not significantly different in weight gain, average daily gain and feed intake compared to the control diet (P>0.05). But chickens fed AMLM had decreased feed conversion ratio than the control (P<0.05). In addition, broiler chickens fed AMLM diets were not significantly different in all carcass composition parameters compared to the control diet (P>0.05). It is concluded that the AMLM contained 10% in diets does not affect broiler chickens' growth performance and carcass composition.","PeriodicalId":426475,"journal":{"name":"ASEAN Journal of Scientific and Technological Reports","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129585663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of Using Blue Crab Shell Powder (BCSP) on Alteration of EC, pH, Leaf Greenness, and Growth of Cucumis melo var. Hamigua TA215 Seedlings 施用蓝蟹壳粉对哈密瓜TA215幼苗EC、pH、叶片绿度及生长的影响

ASEAN Journal of Scientific and Technological Reports Pub Date : 2022-12-22 DOI: 10.55164/ajstr.v25i4.247640

P. Pimonrat, D. Watcharinrat, N. Chanchula, Pornpimol Pimolrat

{"title":"Impact of Using Blue Crab Shell Powder (BCSP) on Alteration of EC, pH, Leaf Greenness, and Growth of Cucumis melo var. Hamigua TA215 Seedlings","authors":"P. Pimonrat, D. Watcharinrat, N. Chanchula, Pornpimol Pimolrat","doi":"10.55164/ajstr.v25i4.247640","DOIUrl":"https://doi.org/10.55164/ajstr.v25i4.247640","url":null,"abstract":"Seedling is the most important starting material for muskmelon production. Healthy seedling production can be addressed by finding appropriate seedling substrates. Blue crab shell powder (BCSP) has been used as a substrate additive to increase the growth and yield of agricultural produce. This research aimed to investigate the impact of using BCSP on the alteration of EC, pH, leaf greenness, and growth of Cucumis melo var. Hamigua TA215 seedlings. The substrates making up the treatments were 5, 10, and 15% BCSP, and peat moss was used as a control. Four treatments replicated three times were laid out in a Completely Randomized Design (CRD). The results showed that increasing EC and pH were attributed by increasing the BCSP. After 9 days of watering, a reduction of EC was found. On the contrary, pH in 15% BCSP adding treatment was gradually increased and reached the highest point at day 9. Alteration of EC and pH affected leaf greenness. The highest point of leaf greenness was found on day 1, consistent with increasing EC. Final growth was most significant for seedlings grown in peat moss (control) and tended to decrease as the percent BCSP increased. These are indicative that essential elements in BCSP resulted in leaf greenness appearance. It was growing of pH impact growths of seedlings. Reduction of the amount of BCSP might provide favorable conditions around root environments for the seedling development of muskmelon with healthy growth.","PeriodicalId":426475,"journal":{"name":"ASEAN Journal of Scientific and Technological Reports","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116183985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Different Potting Media on the Growth of Commercial Cacti 不同盆栽介质对商品仙人掌生长的影响

ASEAN Journal of Scientific and Technological Reports Pub Date : 2022-12-22 DOI: 10.55164/ajstr.v25i4.247560

Kittiphan Ritthidechrat, C. Anuwong

{"title":"Effects of Different Potting Media on the Growth of Commercial Cacti","authors":"Kittiphan Ritthidechrat, C. Anuwong","doi":"10.55164/ajstr.v25i4.247560","DOIUrl":"https://doi.org/10.55164/ajstr.v25i4.247560","url":null,"abstract":"-\u0000This research aims to study the appropriate growing media for the growth of cacti that can reduce production costs and promote cacti’s growth. The research used four genera of cacti, i.e., Gymnocalycium, Astrophytum, Mammillaria, and Echinopsis, which were famous in the commercial market in Thailand. The experimental design was completely randomized designs (CRD) with four different growing media and three replications; T1) fermented rain tree leaves (FRTL): perlite: vermiculite: pumice: vermicompost as a control, T2) FRTL: rice husk: coconut coir: charcoal: vermicompost, T3) FRTL: rice husk ash: coconut husks chips: expanded clay: vermicompost and T4) rice husk ash: vermicompost. The plant was cultivated the plastic pot 2-inches and collected the growth for six months. The result showed that Mammillaria was planted in Treatment 3 gave the greatest stem diameter and the number of roots. A similar increase in stem diameter of Echinopsis and Gymnocalycium had the newest areoles. While planted in T4, as a result, the genus Astrophytum has increased in stem diameter, the number of new areoles, and the number of roots. In the Gymnocalycium also found an increase in stem diameter. Therefore, the use of cacti growing media in T3 as an appropriate for the growth of cacti. Furthermore, it can reduce the production cost of growing media about 0.72 baht per pot (33%) when compared with the commercial media (T1) in a 2-inches plastic pot.","PeriodicalId":426475,"journal":{"name":"ASEAN Journal of Scientific and Technological Reports","volume":"794 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133418407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water Quality Management Guidelines to Reduce Mortality Rate of Red Tilapia (Oreochromis niloticus x Oreochromis mossambicus) Fingerlings Raised in Outdoor Earthen Ponds with a Recirculating Aquaculture System Using Machine Learning Techniques 采用机器学习技术的循环水养殖系统降低室外土池养殖红罗非鱼(Oreochromis niloticus x Oreochromis mossambicus)鱼种死亡率的水质管理指南

ASEAN Journal of Scientific and Technological Reports Pub Date : 2022-11-20 DOI: 10.55164/ajstr.v25i4.247049

Putra Ali Syahbana Matondang, W. Taparhudee, R. Yoonpundh, Roongparit Jongjaraunsuk

{"title":"Water Quality Management Guidelines to Reduce Mortality Rate of Red Tilapia (Oreochromis niloticus x Oreochromis mossambicus) Fingerlings Raised in Outdoor Earthen Ponds with a Recirculating Aquaculture System Using Machine Learning Techniques","authors":"Putra Ali Syahbana Matondang, W. Taparhudee, R. Yoonpundh, Roongparit Jongjaraunsuk","doi":"10.55164/ajstr.v25i4.247049","DOIUrl":"https://doi.org/10.55164/ajstr.v25i4.247049","url":null,"abstract":"Machine learning techniques have been widely adopted over the last few decades, especially in fisheries. This study aimed to determine the best practice of machine learning techniques with a decision tree algorithm in reducing the mortality rate of red tilapia (Oreochromis niloticus x Oreochromis mossambicus) fingerlings raised in outdoor earthen ponds with a recirculating aquaculture system. The study phase begins with collecting water quality parameters. The parameters were measured in the form of dissolved oxygen (mg L-1), pH, temperature (°C), total ammonia nitrogen (mg L-1), nitrite-nitrogen (mg L-1), alkalinity (mg L-1), transparency (cm), and mortality rate (fish day-1). Data Modelling was carried out using 10-fold cross-validation. The results of the performance measurement obtained an accuracy of 89.67% with ± 5.11% (micro average: 89.60%), a precision of 86.71% ± 18.02% (micro average: 80.00%), and recall of 72.50% ± 24.86% (micro average: 71.79%), with the most influential water quality parameter being nitrite-nitrogen (mg L-1). Based on the results of this study show that data classification using a decision tree algorithm can be used as a reference to determine the decisions or actions of fish farmers in reducing the mortality rate of red tilapia fingerlings raised in outdoor earthen ponds with a recirculating aquaculture system.","PeriodicalId":426475,"journal":{"name":"ASEAN Journal of Scientific and Technological Reports","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133388824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0