Noor Nabi Bhutto, Absar Mithal Jiskani, Ghulam Mustafa Nizamani
Cotton is the largest industrial sector in Pakistan. However, due to bad traditional practices and use of high amount pesticides, the whole industry lost about 10-15% of cotton. For reasons of socioeconomic and environmental harm, the Better Cotton Initiative (BCI) launched "Better Cotton" in Pakistan. Better cotton production is a more environmentally friendly alternative to traditional cotton due to its efficient resource utilization and lower environmental externalities. CABI encourages farmers to implement better cotton production principles and criteria, use better cotton standard system and good agricultural practices (GAP), and provide participatory training for small, medium and large-sized farmers and farm workers in their "learning groups" and medium-sized farmers' fields. The aim of this short communication article is to put together a concise review of Better Cotton production. In this short communication we briefly present the history, importance, aim, distribution and principles of Better Cotton Initiative.
{"title":"Better Cotton: An Approach to Sustainable Agriculture","authors":"Noor Nabi Bhutto, Absar Mithal Jiskani, Ghulam Mustafa Nizamani","doi":"10.55043/jaast.v6i1.35","DOIUrl":"https://doi.org/10.55043/jaast.v6i1.35","url":null,"abstract":"Cotton is the largest industrial sector in Pakistan. However, due to bad traditional practices and use of high amount pesticides, the whole industry lost about 10-15% of cotton. For reasons of socioeconomic and environmental harm, the Better Cotton Initiative (BCI) launched \"Better Cotton\" in Pakistan. Better cotton production is a more environmentally friendly alternative to traditional cotton due to its efficient resource utilization and lower environmental externalities. CABI encourages farmers to implement better cotton production principles and criteria, use better cotton standard system and good agricultural practices (GAP), and provide participatory training for small, medium and large-sized farmers and farm workers in their \"learning groups\" and medium-sized farmers' fields. The aim of this short communication article is to put together a concise review of Better Cotton production. In this short communication we briefly present the history, importance, aim, distribution and principles of Better Cotton Initiative.","PeriodicalId":33922,"journal":{"name":"Journal of Applied Agricultural Science and Technology","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84279910","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}
R. Yanti, W. Setyaningsih, P. Triwitono, Richa Yuniansyah, Ermi Saraswati Maha Admi
Jack bean (Canavalia ensiformis), Indonesian local bean, has a high content of protein and great potential either for substituting or overcoming the shortage of imported soybean in tofu production. However, an appropriate coagulant in a proper amount is needed to make tofu with acceptable characteristics. This study set out to investigate the appropriate type and concentration of coagulant. The experiment was carried out by using GDL (glucono delta lactone) and nigari as coagulants with concentration levels of 0.25; 0.5; 0.75 and 1%. Some quality parameters such as yield, color, texture (hardness, cohesiveness, chewiness, springiness), and microscopic structure of tofu were observed. Consumer preference tests on aroma, color, taste, texture, and overall acceptability were directed to determine tofu with the best characteristics. The result showed nigari at concentration level 0.75% delivered the most preferred tofu for consumers.
{"title":"Effect of Different Coagulants and Various Concentrations on Quality of Jack Bean Tofu","authors":"R. Yanti, W. Setyaningsih, P. Triwitono, Richa Yuniansyah, Ermi Saraswati Maha Admi","doi":"10.32530/jaast.v6i1.23","DOIUrl":"https://doi.org/10.32530/jaast.v6i1.23","url":null,"abstract":"Jack bean (Canavalia ensiformis), Indonesian local bean, has a high content of protein and great potential either for substituting or overcoming the shortage of imported soybean in tofu production. However, an appropriate coagulant in a proper amount is needed to make tofu with acceptable characteristics. This study set out to investigate the appropriate type and concentration of coagulant. The experiment was carried out by using GDL (glucono delta lactone) and nigari as coagulants with concentration levels of 0.25; 0.5; 0.75 and 1%. Some quality parameters such as yield, color, texture (hardness, cohesiveness, chewiness, springiness), and microscopic structure of tofu were observed. Consumer preference tests on aroma, color, taste, texture, and overall acceptability were directed to determine tofu with the best characteristics. The result showed nigari at concentration level 0.75% delivered the most preferred tofu for consumers.","PeriodicalId":33922,"journal":{"name":"Journal of Applied Agricultural Science and Technology","volume":"54 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72492447","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}
Oil palm (Elaeis guineensis Jacq.) has become the main plantation commodity in Indonesia. Climate change phenomena and competitiveness fluctuation of palm oil commodities have led to increased need for optimized land productivity while maintaining sustainability. This research aimed to study the potential of oil palm intercropping with liberica coffee (Coffea liberica L.) in several smallholder oil palm plantations in Riau Province, Sumatera Island, Indonesia. Measurements in the middle of the non-harvesting path of oil palm showed the age of oil palm is directly proportional to the difference between air and soil temperature and relative humidity under canopy. Oil palm roots were dominantly distributed vertically in solum 0 - 30 cm and always dominant compared to coffee at all horizontal distances observed. While the dominant root coffee distribution was in solum 31 - 60 cm. Analysis results show the tap roots extend no further than 30-45 cm below the soil surface. It was known that oil palm roots are dominantly distributed at a distance of 2-3 m from the trunk while the coffee roots are dominantly distributed at a distance of 1-2 m from the trunk. Analysis of oil palm yields in the intercropping system showed no significant decrease compared to monocropping systems with relatively the same age and production input. Coffee production per tree has decreased by 25-30% compared to the average production in monocropping systems.
{"title":"Potential of Intercropping of Oil Palm (E. guineensis Jacq.) and Liberica Coffee (C. liberica L.): A Case Study in Smallholder Plantation","authors":"E. Firmansyah, A. Umami","doi":"10.32530/jaast.v5i2.22","DOIUrl":"https://doi.org/10.32530/jaast.v5i2.22","url":null,"abstract":"Oil palm (Elaeis guineensis Jacq.) has become the main plantation commodity in Indonesia. Climate change phenomena and competitiveness fluctuation of palm oil commodities have led to increased need for optimized land productivity while maintaining sustainability. This research aimed to study the potential of oil palm intercropping with liberica coffee (Coffea liberica L.) in several smallholder oil palm plantations in Riau Province, Sumatera Island, Indonesia. Measurements in the middle of the non-harvesting path of oil palm showed the age of oil palm is directly proportional to the difference between air and soil temperature and relative humidity under canopy. Oil palm roots were dominantly distributed vertically in solum 0 - 30 cm and always dominant compared to coffee at all horizontal distances observed. While the dominant root coffee distribution was in solum 31 - 60 cm. Analysis results show the tap roots extend no further than 30-45 cm below the soil surface. It was known that oil palm roots are dominantly distributed at a distance of 2-3 m from the trunk while the coffee roots are dominantly distributed at a distance of 1-2 m from the trunk. Analysis of oil palm yields in the intercropping system showed no significant decrease compared to monocropping systems with relatively the same age and production input. Coffee production per tree has decreased by 25-30% compared to the average production in monocropping systems. ","PeriodicalId":33922,"journal":{"name":"Journal of Applied Agricultural Science and Technology","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79670522","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}
S. Pambudi, A. Triono, M. Asrofi, Iid Mufaidah, Y. Variyana, R. A. Ilyas
Nano particles of metal oxide developed as soluble nano additive in liquid fuels to improve fuel quality. One application of nano metal oxide particles is an additive to biodiesel. Biodiesel is an alternative fuel that can reduce dependence on fossil fuels. Pure biodiesel has a relatively lower calorific value compared to fossil fuels. Low calorific value results in increased brake specific fuel consumption. Moreover, biodiesel has a higher density and viscosity compared to fossil fuel. The content of carbon monoxide (CO), unburned hydrocarbons (HC) and nitrogen oxide (NOx) in exhaust gases with biodiesel is higher than fossil fuels. Metal oxide nanoparticles are added to biodiesel between 6 to 80 nm with concentrations about 50 to 500 ppm. Addition of metal oxide nanoparticles to biodiesel can improve brake thermal efficiency, reduce brake specific fuel consumption, carbon monoxide (CO), unburned hydrocarbons (HC), nitrogen oxide (NOx) and improve carbon dioxide (CO2) emission due to the catalytic effect of metal oxide nanoparticles. Metal oxide acts as an oxidation catalyst thereby reduce the carbon combustion activation temperature and thus enhances hydrocarbon oxidation, promoting complete combustion. Nanoparticles that are often used in various studies are nickel (II) oxide (NiO), cerium (IV) oxide (CeO2), titanium oxide (TiO2), zinc oxide (ZnO), aluminum oxide (Al2O3), and silicon dioxide (SiO2). This review paper describes the progress and development of nano metal oxide applications as additives for biodiesel, and the discussion in this paper is divided into 3 main topics, including the effects of nanoparticles on the properties of biodiesel, engine performance, and emission characteristics.
{"title":"Metal Oxides as Soluble Nano Catalyst on Biodiesel: A Review","authors":"S. Pambudi, A. Triono, M. Asrofi, Iid Mufaidah, Y. Variyana, R. A. Ilyas","doi":"10.32530/jaast.v5i2.27","DOIUrl":"https://doi.org/10.32530/jaast.v5i2.27","url":null,"abstract":"Nano particles of metal oxide developed as soluble nano additive in liquid fuels to improve fuel quality. One application of nano metal oxide particles is an additive to biodiesel. Biodiesel is an alternative fuel that can reduce dependence on fossil fuels. Pure biodiesel has a relatively lower calorific value compared to fossil fuels. Low calorific value results in increased brake specific fuel consumption. Moreover, biodiesel has a higher density and viscosity compared to fossil fuel. The content of carbon monoxide (CO), unburned hydrocarbons (HC) and nitrogen oxide (NOx) in exhaust gases with biodiesel is higher than fossil fuels. Metal oxide nanoparticles are added to biodiesel between 6 to 80 nm with concentrations about 50 to 500 ppm. Addition of metal oxide nanoparticles to biodiesel can improve brake thermal efficiency, reduce brake specific fuel consumption, carbon monoxide (CO), unburned hydrocarbons (HC), nitrogen oxide (NOx) and improve carbon dioxide (CO2) emission due to the catalytic effect of metal oxide nanoparticles. Metal oxide acts as an oxidation catalyst thereby reduce the carbon combustion activation temperature and thus enhances hydrocarbon oxidation, promoting complete combustion. Nanoparticles that are often used in various studies are nickel (II) oxide (NiO), cerium (IV) oxide (CeO2), titanium oxide (TiO2), zinc oxide (ZnO), aluminum oxide (Al2O3), and silicon dioxide (SiO2). This review paper describes the progress and development of nano metal oxide applications as additives for biodiesel, and the discussion in this paper is divided into 3 main topics, including the effects of nanoparticles on the properties of biodiesel, engine performance, and emission characteristics.","PeriodicalId":33922,"journal":{"name":"Journal of Applied Agricultural Science and Technology","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78194991","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}
This study aims to examine the influence of the concentration level of organic tofu liquid waste and rice straw mulch on the growth of cacao (Theobroma cacao L) seedlings. It was carried out using three variables, namely the concentration of tofu liquid waste and four treatment levels. These include treatments without tofu liquid waste 0 ml/kg/plant (T0), and with 60 ml/kg/plant (T1), 80 ml/kg/plant (T2), and 100 ml/kg/plant (T3), respectively. Furthermore, rice straw organic mulch factor with three levels, namely 15 gr/plant (15 tons/ha) (M1), 20 gr/plant (20 tons/ha) (M2), and 25 gr/plant (25 tons/ha) (M3) was also used. The results indicated that the concentration of liquid organic fertilizer derived from tofu liquid waste significantly affected plant height at the age of 3 months. The tallest plant measured 64.78 cm in height, with 21.33 leaves, stem diameter of 0.72, and leaf area of 17.58 cm2. Organic rice straw mulch did not have a significant effect on all plant factors. This showed that the application of liquid organic fertilizer tofu waste influences plant height, leaf number, and stem diameter, and there is no effect on the leaf surface, while rice straw mulch did not alter all plant variables.
{"title":"The Effect of Tofu Liquid Waste and Organic Mulch on the Growth of Cocoa (Theobroma Cacao L.) Nursery Plants in a Polybag","authors":"Ifan Aulia Candra, Eri Samah","doi":"10.55043/jaast.v6i2.56","DOIUrl":"https://doi.org/10.55043/jaast.v6i2.56","url":null,"abstract":"This study aims to examine the influence of the concentration level of organic tofu liquid waste and rice straw mulch on the growth of cacao (Theobroma cacao L) seedlings. It was carried out using three variables, namely the concentration of tofu liquid waste and four treatment levels. These include treatments without tofu liquid waste 0 ml/kg/plant (T0), and with 60 ml/kg/plant (T1), 80 ml/kg/plant (T2), and 100 ml/kg/plant (T3), respectively. Furthermore, rice straw organic mulch factor with three levels, namely 15 gr/plant (15 tons/ha) (M1), 20 gr/plant (20 tons/ha) (M2), and 25 gr/plant (25 tons/ha) (M3) was also used. The results indicated that the concentration of liquid organic fertilizer derived from tofu liquid waste significantly affected plant height at the age of 3 months. The tallest plant measured 64.78 cm in height, with 21.33 leaves, stem diameter of 0.72, and leaf area of 17.58 cm2. Organic rice straw mulch did not have a significant effect on all plant factors. This showed that the application of liquid organic fertilizer tofu waste influences plant height, leaf number, and stem diameter, and there is no effect on the leaf surface, while rice straw mulch did not alter all plant variables.","PeriodicalId":33922,"journal":{"name":"Journal of Applied Agricultural Science and Technology","volume":" 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72381041","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}
H. Pujiwati, N. Setyowati, Desi Dwi Wahyuni, Z. Muktamar
The application of a wed-based liquid organic fertilizer can increase the production of black soybeans (Glycine Max L. Merril). The study aimed to identify the best source and dose of liquid organic fertilizer (LOF) for black soybean growth and yield. The researchers used a three-times-repeated Completely Randomized Design (CRD) using a factorial layout. The first factor was the source of LOF, which included Siam weed (Chromolaena odorata, L.), Goat weed (Ageratum conyzoides L.), and yellow creeping daisy (Wedelia trilobata L.). The second factor was the concentration of weed-based LOF, consisted of water (control treatment); 12 ml/L; 16 ml/L; 20 ml/L. The results of the study show, weed-based LOF, namely LOF Yellow creeping daisy, Goat weed, and Siam weed, resulted in no significant difference in the growth and yield of the black soybean. Except for the variables of root fresh weight and number of pods per plant, the variation in concentration of weed-based liquid organic fertilizer had no significant effect on plant growth and yield.
施用以杂草为基础的液体有机肥可以提高黑大豆(Glycine Max L. Merril)的产量。本试验旨在确定液体有机肥对黑豆生长发育和产量的最佳施用来源和用量。研究人员使用了三次重复的完全随机设计(CRD)，使用因子布局。第一个因素是LOF的来源，主要包括暹罗草(Chromolaena odorata, L.)、山羊草(Ageratum conyzoides L.)和黄匍匐茎(Wedelia trilobata L.)。第二个影响因素是以杂草为基础的LOF浓度，包括水(对照处理);12毫升/ L;16毫升/ L;20毫升/ L。研究结果表明，以杂草为基础的LOF，即LOF黄匍匐雏菊、山羊杂草和暹罗杂草对黑大豆的生长和产量没有显著影响。除根鲜重和单株荚果数外，施用杂草型液体有机肥的浓度变化对植株生长和产量无显著影响。
{"title":"Growth and Yield of Soybean on Various Types and Concentrations of Liquid Organic Fertilizer in Ultisols","authors":"H. Pujiwati, N. Setyowati, Desi Dwi Wahyuni, Z. Muktamar","doi":"10.32530/jaast.v5i2.28","DOIUrl":"https://doi.org/10.32530/jaast.v5i2.28","url":null,"abstract":"The application of a wed-based liquid organic fertilizer can increase the production of black soybeans (Glycine Max L. Merril). The study aimed to identify the best source and dose of liquid organic fertilizer (LOF) for black soybean growth and yield. The researchers used a three-times-repeated Completely Randomized Design (CRD) using a factorial layout. The first factor was the source of LOF, which included Siam weed (Chromolaena odorata, L.), Goat weed (Ageratum conyzoides L.), and yellow creeping daisy (Wedelia trilobata L.). The second factor was the concentration of weed-based LOF, consisted of water (control treatment); 12 ml/L; 16 ml/L; 20 ml/L. The results of the study show, weed-based LOF, namely LOF Yellow creeping daisy, Goat weed, and Siam weed, resulted in no significant difference in the growth and yield of the black soybean. Except for the variables of root fresh weight and number of pods per plant, the variation in concentration of weed-based liquid organic fertilizer had no significant effect on plant growth and yield.","PeriodicalId":33922,"journal":{"name":"Journal of Applied Agricultural Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88218652","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}
P. Hayati, Mairati Mandwi Yld, S. Sutoyo, M. Zaitialia
Okra (Abelmoschus esculenthus) is a vegetable plant consumed in immature and tender texture fruits. Crosses of local okra with introduced varieties are carried out to improve the character of the local cultivars. This study aimed to assess the variability of agronomic characters, both quantitative and qualitative characters of various families of the F2 populations and select superior families that can be used to produce new cultivars. The F2 population was derived from inbreeding and selection of the crosses between local okra cultivars with B291 and Ve022 as introduced cultivars. The study used an experimental method with an individual observation. Qualitative characters were described based on the descriptor by IBPGR, while quantitative characters were analyzed using descriptive statistics. Results showed variation in each F2 family in plant height, the number of flowers per plant and the number of fruits per plant, except for SOMB291-16. FOHVE022-8, FOHB291-15, FOHVE022-17, SOMB291-23 and SOMB291-24 families could be selected due to the extended picking time were in line with the increase of fruit quality. A broad variability of quantitative characters was found for all characters, indicating a high opportunity to obtain valuable traits and desirable segregants in F2 populations. Variations in qualitative characters were found in stem color, leaf shape, fruit color and fruit shape. The selection of plants with specific characters could be maintained with inbreeding or self-pollinated desirable segregants.
{"title":"Phenotypic Variability of The F2 Populations Derived from Crosses Between Local and Introduced Okra Cultivars","authors":"P. Hayati, Mairati Mandwi Yld, S. Sutoyo, M. Zaitialia","doi":"10.32530/jaast.v5i2.30","DOIUrl":"https://doi.org/10.32530/jaast.v5i2.30","url":null,"abstract":"Okra (Abelmoschus esculenthus) is a vegetable plant consumed in immature and tender texture fruits. Crosses of local okra with introduced varieties are carried out to improve the character of the local cultivars. This study aimed to assess the variability of agronomic characters, both quantitative and qualitative characters of various families of the F2 populations and select superior families that can be used to produce new cultivars. The F2 population was derived from inbreeding and selection of the crosses between local okra cultivars with B291 and Ve022 as introduced cultivars. The study used an experimental method with an individual observation. Qualitative characters were described based on the descriptor by IBPGR, while quantitative characters were analyzed using descriptive statistics. Results showed variation in each F2 family in plant height, the number of flowers per plant and the number of fruits per plant, except for SOMB291-16. FOHVE022-8, FOHB291-15, FOHVE022-17, SOMB291-23 and SOMB291-24 families could be selected due to the extended picking time were in line with the increase of fruit quality. A broad variability of quantitative characters was found for all characters, indicating a high opportunity to obtain valuable traits and desirable segregants in F2 populations. Variations in qualitative characters were found in stem color, leaf shape, fruit color and fruit shape. The selection of plants with specific characters could be maintained with inbreeding or self-pollinated desirable segregants.","PeriodicalId":33922,"journal":{"name":"Journal of Applied Agricultural Science and Technology","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81784898","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}
The SWC and the SBD play an important role in determining soil’s suitability for agricultural uses because they affect various physical, chemical, and biology of soil properties. This field experiment aimed to investigate the reciprocal effect of the SWC and the SBD on the growth and yield of onion (Allium cepa L.). The experiment was layout in a randomized complete block design (RCBD) with three replications. This experiment consisted of one factor, namely, water (A) with four levels, namely, (A0=0 liter, A1=4 liters, A2=8 liters, and A3=16 liters), and one variety endemic of local Tomia (V). The treatment consisted of A0V, A1V, A2V, and A3V. Parameters observed including plant height, leaf width, fresh bulb and dry bulb weight. The results showed that the different water levels treatment had a highly significant (p<0.01) affected the SWC and SBD. Also, simultaneously the SWC and the SBD had a high significance (p<0.01) reciprocally influenced the plant height, leaf width, fresh and dry weight of onion. When the SWC increase, the growth and the yield of onion increase, and when (SBD) decreases, the growing and the yield parameters increases. The best result occurred at the pair of SWC and SBD values of (28.52 %, 1.2 g.m3) with 33.07 cm plant height, 1.3 cm leaf width, 51.67 g fresh weight, and 44.33 g dry weight, followed by other pair of values of SWC and SBD. Through graphs, the analysis showed that SWC has a positive effect and SBD has a negative influence on the growth and yield of onion except at an appropriate value.
{"title":"The Reciprocal Effect Between Soil Water Content and The Soil Bulk Density on The Growth and Yield Of Onion (Allium cepa L.)","authors":"Pou Anda","doi":"10.32530/jaast.v5i2.26","DOIUrl":"https://doi.org/10.32530/jaast.v5i2.26","url":null,"abstract":"The SWC and the SBD play an important role in determining soil’s suitability for agricultural uses because they affect various physical, chemical, and biology of soil properties. This field experiment aimed to investigate the reciprocal effect of the SWC and the SBD on the growth and yield of onion (Allium cepa L.). The experiment was layout in a randomized complete block design (RCBD) with three replications. This experiment consisted of one factor, namely, water (A) with four levels, namely, (A0=0 liter, A1=4 liters, A2=8 liters, and A3=16 liters), and one variety endemic of local Tomia (V). The treatment consisted of A0V, A1V, A2V, and A3V. Parameters observed including plant height, leaf width, fresh bulb and dry bulb weight. The results showed that the different water levels treatment had a highly significant (p<0.01) affected the SWC and SBD. Also, simultaneously the SWC and the SBD had a high significance (p<0.01) reciprocally influenced the plant height, leaf width, fresh and dry weight of onion. When the SWC increase, the growth and the yield of onion increase, and when (SBD) decreases, the growing and the yield parameters increases. The best result occurred at the pair of SWC and SBD values of (28.52 %, 1.2 g.m3) with 33.07 cm plant height, 1.3 cm leaf width, 51.67 g fresh weight, and 44.33 g dry weight, followed by other pair of values of SWC and SBD. Through graphs, the analysis showed that SWC has a positive effect and SBD has a negative influence on the growth and yield of onion except at an appropriate value.","PeriodicalId":33922,"journal":{"name":"Journal of Applied Agricultural Science and Technology","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77829239","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}
{"title":"The Prospect of Knowledge Growing System (KGS) for Plant Disease Early Detection System","authors":"I. Syamsiana","doi":"10.32530/JAAST.V5I1.19","DOIUrl":"https://doi.org/10.32530/JAAST.V5I1.19","url":null,"abstract":"Editor's Corner","PeriodicalId":33922,"journal":{"name":"Journal of Applied Agricultural Science and Technology","volume":"95 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89539958","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}
I. Chaniago, Noverina Chaniago, I. Suliansyah, N. Rozen
Regency of Deli Serdang in the Province of Sumatera Utara has high diversity of landrace rice that has adapted to various climatic and edaphic condition including drought. Studies on various local rice genotypes tolerant to drought is of important to be carried out. This will help plant breeders with germplasms for future breeding program. Polyethylene glycol (PEG) is a water-soluble compound with high osmotic pressure and unlikely to have specific interaction with biological chemicals. With these properties, PEG is often be used in studies of plant response to drought stress. The experiment reported here was aimed at determining rice genotypes, local to Regency of Deli Serdang, tolerant to drought. The experiment was carried out at Laboratory of Physiology and Glass House of Faculty of Agriculture, Universitas Islam Sumatera Utara, Medan from February to April 2020. A two-way factorial experiment was assigned in a completely randomized design (CRD) with 3 replicates. The first factor was 23 local rice genotypes plus 4 genotypes tolerant to drought and the second factor was the concentration of PEG 6000 i. e 0 and 20% (w/v). Observations included percent of germination, plant height, length and number of roots protruding from paraffin-wax layer, leaf chlorophyll content, seedling fresh and dry weight, index of tolerance, probability of resistance, and proline content. Data were analyzed with analysis of variance and mean separation of DNMRT at 5%. Results demonstrated that 6 local rice genotypes, Gemuruh, Ramos Merah, Arias, Sialus, Silayur, and Sirabut were resistant to drought stress under the experimental condition.
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