AGRIEAST: Journal of Agricultural Sciences最新文献

Evaluation of a newly formulated organic fertilizer on growth and yield of curry chilli (Capsicum Frutescens L.) 新配制的有机肥对咖喱辣椒（Capsicum Frutescens L.）生长和产量的评价

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2023-12-28 DOI: 10.4038/agrieast.v17i2.122

K. Kajeevan, N. Gnanavelrajah

{"title":"Evaluation of a newly formulated organic fertilizer on growth and yield of curry chilli (Capsicum Frutescens L.)","authors":"K. Kajeevan, N. Gnanavelrajah","doi":"10.4038/agrieast.v17i2.122","DOIUrl":"https://doi.org/10.4038/agrieast.v17i2.122","url":null,"abstract":"A study was conducted to formulate a low-cost organic fertilizer using different nutrient sources and to assess the potential use of the formulated organic fertilizer (FOF) on the growth and yield of Curry Chilli (Capsicum frutescens L.). The organic fertilizer was formulated based on the nutrient content of dry powders of Spirulina (Sp), Azolla (Az) Palmyrah leaf (Pl), Coconut leaf (Cl) and Banana pseudostem (Bp). A pot experiment was conducted to find the response of different fertilizer combinations: 100% inorganic (T2-NPK-0.9,1.01,0.58 g/pot), 50% inorganic (T3), 100% organic (cattle manure-T4-135g/pot), 50% organic (cattle manure - T5), 50% inorganic + 67.5 g FOF (T6) and 50% organic + 67.5 g FOF (T7) and a control (no fertilizer - T1) on growth and yield of Curry Chilli. Plant height, biomass yield, fruit yield at first picking and plant nutrient uptake were recorded. The nutrient contents of organic sources namely, potassium (19.56 ppm), phosphorous (6.17 ppm), nitrogen (115.03 ppm) and carbon (832.50 ppm), were significantly higher in Bp, Bp, Sp and Pl, respectively, than other sources. Treatment T7 (50% organic + FOF) recorded the highest values in height (51.63 cm), nitrogen (2.0 g/plant), phosphorous (1.77 g/plant), and potassium (44.5 g/plant) uptake, dry biomass yield (42.30 g/plant) and fruit yield at first picking (40 g/plant). However, significant differences (P<0.05) were observed only in dry biomass yield and NPK uptake between T7 and T2. Considering height, biomass yield, fruit yield and nutrient uptake substituting 50% organic or inorganic fertilizer with FOF, the performance of Curry Chilli was either equal to or higher than 100% organic or inorganic treatments. Results, therefore, indicate that FOF has potential as an organic fertilizer.","PeriodicalId":322832,"journal":{"name":"AGRIEAST: Journal of Agricultural Sciences","volume":"306 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139152328","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

Effective mitigation of Cadmium contamination in soil through Sawdust Biochar application 通过施用锯末生物炭有效缓解土壤中的镉污染

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2023-12-28 DOI: 10.4038/agrieast.v17i2.126

S. M. M. S. Himaya, A. D. N. T. Kumara, P. Premanandarajah, M. G. M. Thariq

{"title":"Effective mitigation of Cadmium contamination in soil through Sawdust Biochar application","authors":"S. M. M. S. Himaya, A. D. N. T. Kumara, P. Premanandarajah, M. G. M. Thariq","doi":"10.4038/agrieast.v17i2.126","DOIUrl":"https://doi.org/10.4038/agrieast.v17i2.126","url":null,"abstract":"Cadmium (Cd) contamination in soil is a serious environmental concern, and this study examines the effectiveness of sawdust biochar in reducing Cd contamination over three months. The study explores different sawdust biochar application rates and their effects on the amount of extractable Cd in the soil. According to the study, sawdust biochar has a high potential for addressing Cd pollution. Importantly, over the duration of the investigation, extractable Cd concentrations gradually decreased as a result of the use of biochar. In particular, compared to lesser application rates of 2.5% and 1.25%, the highest biochar application rate (5%) resulted in a significant reduction in cumulative leachable Cd content. Additionally, compared to the control group, all biochar-amended soils showed considerably decreased cumulative leachable Cd levels. The leachate study demonstrated the time-dependent efficiency of biochar in lowering Cd concentrations, with Cd concentration declining from 14 mg/L in August 2023 to a meager 0.004 mg/L in October 2023. Diffusion within the porous structure of biochar was determined to be the main process underlying heavy metal adsorption. However, the observed decrease in the effectiveness of heavy metal removal with biochar may be explained by surface oxidation, which creates a greater number of accessible adsorption sites. Furthermore, the soil's capacity to absorb Cd2+ was greatly improved by the raised pH brought on by biochar application, further enhancing Cd removal. The study also showed the importance of pyrolysis temperature on biochar characteristics, with higher temperatures greatly improving Cd adsorption capability. This study's findings highlighted the significant potential of sawdust biochar as a powerful technique for reducing soil Cd pollution. These results highlighted the potential of biochar for Cd remediation and crucial role that pyrolysis temperature plays in determining biochar's characteristics and adsorption capacity.","PeriodicalId":322832,"journal":{"name":"AGRIEAST: Journal of Agricultural Sciences","volume":"17 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139149876","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 different planting methods on growth and yield of paddy variety Bg 360 不同种植方法对水稻品种 Bg 360 的生长和产量的影响

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2023-12-28 DOI: 10.4038/agrieast.v17i2.123

R. Subaraj, L. Pradheeban, K. Thanusan

{"title":"Effect of different planting methods on growth and yield of paddy variety Bg 360","authors":"R. Subaraj, L. Pradheeban, K. Thanusan","doi":"10.4038/agrieast.v17i2.123","DOIUrl":"https://doi.org/10.4038/agrieast.v17i2.123","url":null,"abstract":"Rice is the staple food in Sri Lanka. Bg 360 is currently considered the best improved paddy variety cultivated by farmers in Mannar. In the Mannar district, farmers practice different planting methods, and the number of effective tillers obtained varies, which causes yield variation and different production costs in paddy cultivation. To identify the best-suited planting method for the rice variety Bg 360, an experiment was carried out in a randomized complete block design with three replications by adopting five different methods of planting as treatments, namely broadcasting (T1), drum row seeding (T2), SRI method of planting (T3), manual transplanting (T4), and machine transplanting (T5). The parameters such as plant height, leaf area index, tillers, number of grains, panicle numbers and yield per plot were measured. Data were analyzed in the SAS 9.4 version, and mean separation was performed in DMRT to identify the best treatment. The experiment results showed that the planting methods significantly affect the plant height, effective tillers and grain yield. A high number of effective tillers (between 6 – 20 per plant) and yield (number of grains per panicle, 1000 grain weight and number of panicles per plant) were observed in the SRI method, and low value was received from the broadcasting method. The planting methods also significantly affected the time of crop maturity (by two weeks). Direct-seeded rice matured early (110 days), while transplanting took 120 days. Further, transplanted rice, especially in the SRI method, showed low seed requirement, low weeds, pest disease and incidence and low cost of production. Farmers generally do not adopt the SRI method for cultivation because of high time consumption and labour requirements. Based on the study, it can be concluded that transplanted rice, especially the SRI method, is more beneficial than other planting methods to cultivate the Bg 360 paddy variety.","PeriodicalId":322832,"journal":{"name":"AGRIEAST: Journal of Agricultural Sciences","volume":"89 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139151463","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 gamma radiation on morphological changes and vegetative growth in sunflower (Helianthus annuus L.) γ辐射对向日葵形态变化及营养生长的影响

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2022-12-21 DOI: 10.4038/agrieast.v16i2.114

L. Rifnas, N. P. Vidanapathirana, T. D. Silva, N. Dahanayake, S. Subasinghe, S. Weerasinghe, S. Nelka, H. Rohanadeera, W. G. C. Madushani

引用次数: 0

Cinnamon (Cinnamomum verum J. Presl) bush architecture as affected by modified planting systems 改良种植制度对肉桂(Cinnamomum verum J. Presl)灌木结构的影响

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2022-12-21 DOI: 10.4038/agrieast.v16i2.115

H. N. Aluthgamage, D. Fonseka, C. K. Benaragama

{"title":"Cinnamon (Cinnamomum verum J. Presl) bush architecture as affected by modified planting systems","authors":"H. N. Aluthgamage, D. Fonseka, C. K. Benaragama","doi":"10.4038/agrieast.v16i2.115","DOIUrl":"https://doi.org/10.4038/agrieast.v16i2.115","url":null,"abstract":"Cinnamon (Cinnamomum verum J. Presl) is a spice crop native to Sri Lanka which plays a vital role in the country's export earnings. Bark being the harvestable portion, the production of cinnamon can be affected by its bush architecture. Hence, this study was conducted to identify the impact of harvesting interval, spatial pattern, and type of planting material on some essential aspects of cinnamon bush architecture, namely, the number of stems per plant, stem height, stem diameter, straightness of the stem, percentage of branches in upper, middle and lower levels of the stem, number of branches per unit length, branch length and angle. Seedlings and vegetatively propagated plants (VP) of cinnamon variety Sri Gemunu were planted under three different spatial patterns such as (A) 1.2×0.6 m with three plants per hill, (B) 1.2×0.4 m with two plants per hill, and (C) 1.2×0.2 m with one plant per hill while maintaining an equal plant density. Two main plots were maintained with the above treatment combinations, harvested according to two harvesting intervals (6 and 8 months). The study was conducted two years after the first harvest. According to the results, seedlings established in the spatial pattern C produced a significantly higher (p < 0.05) number of longer stems with fewer branches per unit length. Similarly, seedlings harvested in eight months intervals produced significantly longer stems (p < 0.05). The stem diameter of VP was significantly higher than seedlings (p < 0.05). Similarly, stem diameter was significantly higher when harvested in eight months intervals than six months intervals (p < 0.05). Seedlings were straighter than VP. Therefore, a preferable bush architecture can be obtained in cinnamon plants by selecting an optimum combination of harvesting interval, spatial pattern, and planting material.","PeriodicalId":322832,"journal":{"name":"AGRIEAST: Journal of Agricultural Sciences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123419977","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

Thermal drift compensation of load cell reading using linear regression in weighing lysimeters 用线性回归法补偿称重计中称重传感器读数的热漂移

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2022-12-21 DOI: 10.4038/agrieast.v16i2.116

G. Abhiram

引用次数: 2

Efficacy of extracts of the different plant parts of Piper nigrum against bruchid beetle (Callosobruchus maculatus) in stored cowpea 黑椒不同植物部位提取物对储藏豇豆中斑头甲虫的防效研究

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2022-12-21 DOI: 10.4038/agrieast.v16i2.112

R. Niranjana, M. G. M. Samanthikka

引用次数: 0

Antioxidant properties of hydrolyzate produced from the crude extract of Hilsa kelee Hilsa kelee粗提物水解产物的抗氧化性能

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2022-12-21 DOI: 10.4038/agrieast.v16i2.113

L. S. Meepegamage, K. Egodauyana, E. Abeyrathne

引用次数: 0

Determination of rainfall-runoff relationship using SCS- CN method in Batticaloa lagoon area, Sri Lanka 斯里兰卡Batticaloa泻湖地区降雨-径流关系的SCS- CN测定

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2022-08-18 DOI: 10.4038/agrieast.v16i1.107

M. Sugirtharan, S. Pathmarajah

引用次数: 0

Competition indices used to evaluate the agronomic and monetary advantage in intercropping: A review 评价间作农艺和经济效益的竞争指标综述

AGRIEAST: Journal of Agricultural Sciences Pub Date : 2022-08-18 DOI: 10.4038/agrieast.v16i1.109

B. Karunarathna, A. Maduwanthi

{"title":"Competition indices used to evaluate the agronomic and monetary advantage in intercropping: A review","authors":"B. Karunarathna, A. Maduwanthi","doi":"10.4038/agrieast.v16i1.109","DOIUrl":"https://doi.org/10.4038/agrieast.v16i1.109","url":null,"abstract":"With the depletion of land available for agricultural crop cultivation, farmers must take steps to enhance the crop production in order to provide food to the population, improve their livelihood, and generate income. Although there are many methods of cultivation such as greenhouse cultivation and ponic systems to alleviate the problem of land scarcity, those methods may be very expensive. But intercropping can be identified as a method of cultivation to increase the productivity of the land with lower costs, where it involves cultivation of two or more crops together with each other. All the intercropping combinations would not be successful depending on the competition for light, space, time, nutrients and water as well as on the interaction between each. In this context, scientists have identified indices to evaluate the degree of compatibility of each crop combinations. These indices will determine whether any particular crops can be grown in combined to increase the productivity. Authors reviewed the published information and summarized the results. The objective of compiling this review was to gather information of various intercropping researches on intercropping indices and to show the degree of success or unsuccess of each and every crop combination. This paper provides a great idea on the resource use efficiency and advantage of intercropping while giving comparative ideas on selecting crop combinations for intercropping systems. For the compilation, many research articles on various crop combinations were studied and the most important and valuable data were gathered in this paper. This paper would be very much useful for researchers who are going to experiments with the studies related to intercropping.","PeriodicalId":322832,"journal":{"name":"AGRIEAST: Journal of Agricultural Sciences","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126075831","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