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Evaluation of Coconut Based Anacardium occidentale Agroforestry System to Improve the Soil Properties of Coconut Growing Lands in Wet, Intermediate and Dry Zone of Sri Lanka 斯里兰卡湿、中、干旱区以椰子为基材的西洋紫金复合农林业系统改善椰子地土壤性质的评价
Pub Date : 2019-06-01 DOI: 10.37833/cord.v35i01.5
S. Senarathne
This study was intended to assess the impact of coconut based Anacardium occidentale (Cashew) agroforestry systems on soil fertility of degraded coconut lands in wet, intermediate and dry zones of Sri Lanka. Two treatments were evaluated according to randomized complete block design with three replicates. Coconut based agroforestry systems intercropped with A. occidentale and sole coconut were evaluated as two treatments. Soils from three depths were analyzed for its’ chemical, physical and biological properties. According to the esults, higher total N, available P and exchangeable K levels were shown in sole coconut systems than A. occidentale intercropped system while the higher total N levels (2% higher than top soil and 27% higher than deepr soil) were observed in sub soils compared top and deep soils. Higher P content was observed in top soils than in deeper soils. The exchangeable K was observed in higher quantities in sub soil than in deeper soils and was varied with locations. Organic matter content in intercropping of A. occidentale has been increased by 37% and the highest was observed in top soils. Soil bulk density has been reduced by 9% in A. occidentale intercropped system enhancing the root growth. Bulk density has been increased with the depth of the soil. Higher soil microbial activity was observed in A. occidentale intercropped system and it was 22% higher than sole coconut system. Sole coconut system has 50% higher soil moisture percentage and the highest was recorded in sub soils. This study confirms that intercropping of A. occidentale has a positive effect on improving soil fertility of degraded coconut growing soils in wet, intermediate and dry zones of Sri Lanka.
本研究旨在评估以椰子为基础的西方Anacardium occidentale(Cashew)农林系统对斯里兰卡潮湿、中等和干燥地区退化椰子地土壤肥力的影响。根据随机完全区组设计和三个重复对两个处理进行评估。以椰子为基础的西椰和独椰子间作农林复合系统作为两种处理进行了评价。分析了三个深度的土壤的化学、物理和生物特性。结果表明,与西方间作体系相比,单一椰子体系的总氮、有效磷和交换性钾水平较高,而亚表层土壤的总氮水平(比表层土壤高2%,比深层土壤高27%)高于表层土壤和深层土壤。表层土壤的磷含量高于深层土壤。交换性钾在底土中的含量高于在深层土壤中的含量,并且随位置的变化而变化。西洋参间作有机质含量提高了37%,表层土壤有机质含量最高。间作制度使土壤容重降低了9%,促进了根系的生长。堆积密度随着土壤深度的增加而增加。西洋稻间作系统土壤微生物活性较高,比单一椰子系统高22%。Sole椰子系统的土壤水分百分比高出50%,其中底土的水分百分比最高。本研究证实,在斯里兰卡潮湿、中等和干燥地区,西椰间作对改善退化椰子生长土壤的土壤肥力有积极作用。
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引用次数: 1
Effect of Immersion in Calcium Chloride Solution on the Characteristic of Coconut Chips during Storage 氯化钙溶液浸泡对椰子片贮藏特性的影响
Pub Date : 2019-04-01 DOI: 10.37833/cord.v35i01.6
Rindengan Barlina, Linda Trivana, E. Manaroinsong
The quality of coconut chips can be increased, through efforts to improve processing by immersing the coconut meat in CaCl2 solution. The various concentrations of CaCl2 solution are 0.0%, 0.5%, 1.0%, 1.5%, and 2.0%. Furthermore, the effect of treatments was evaluated on the characteristic of coconut chips for 0 months, 2 months, 4 months, and 6 months of storage in plastic coated aluminum foil packaging. The results showed that coconut chips from DMT coconut meat with fruit 9 months old contain 2.36-2.49% moisture, 2.36-2.55% ash, 3.87-5.35% protein, 37.31-45.35% fat, 50.15-53.23% carbohydrate and 4.93-5.48% crude fiber. Immersion in CaCl2 solution and storage time increased the water content of coconut chips. The results of organoleptic testing showed that coconut chips still preferred by respondent up to 6 months of storage. The higher concentration of CaCl2 solution was used, resulting in smaller pressure (gram force) to break or destroy coconut chips, which can be interpreted that coconut chips have a crispness that is still good. Next, the color measurement uses Chromameter Konica Minolta CR-400, L (Lightness) value to 6 months ranged from 76.39-77.65, which indicated that the color of the product is still predominantly bright white.                      
通过将椰子肉浸泡在CaCl2溶液中,努力改进加工工艺,可以提高椰子片的质量。CaCl2溶液的不同浓度分别为0.0%、0.5%、1.0%、1.5%、2.0%。此外,还研究了不同处理对椰子片在涂塑铝箔包装中贮藏0个月、2个月、4个月和6个月的特性的影响。结果表明,9月龄DMT椰肉椰子片的水分含量为2.36 ~ 2.49%,灰分含量为2.36 ~ 2.55%,蛋白质含量为3.87 ~ 5.35%,脂肪含量为37.31 ~ 45.35%,碳水化合物含量为50.15 ~ 53.23%,粗纤维含量为4.93 ~ 5.48%。在CaCl2溶液中浸泡和储存时间增加了椰子片的含水量。感官测试结果表明,在长达6个月的储藏时间内,被调查者仍然偏爱椰子片。CaCl2溶液浓度越高,破坏或破坏椰子片的压力(克力)就越小,这就可以解释为椰子片的脆度仍然很好。接下来,使用柯尼卡美能达CR-400色度仪进行颜色测量,L (Lightness)值至6个月的范围为76.39-77.65,这表明该产品的颜色仍以亮白色为主。
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引用次数: 1
Coir Pith – A Medium for Oil Absorption 椰髓-一种吸油介质
Pub Date : 2019-04-01 DOI: 10.37833/cord.v35i01.9
A. Ravindranath
Coir pith, the byproduct of coconut husk, due to its abundance nature and its porous structure can be effectively used for oil adsorption. Modification of coir pith to make as hydrophobic may allow them to be used for oil adsorption. Oil spills can destroy marine aquatic life and have a great impact on environment. In this study coir pith have been treated enzymatically (Lipase, Protease & Glucanase) and chemically (Acetylation) to impart hydrophobicity and to enhance oil adsorption capacity. The coir pith samples were characterized periodically by FTIR, SEM. The extent of acetylation was evaluated by weight percent gain.The results suggests that acetylated coir pith could be beneficial in oil adsorption and potentially provide a low cost environmentally friend adsorbent for oil spill.
椰子髓是椰子壳的副产品,由于其丰富的性质和多孔结构,可以有效地吸附油脂。对椰髓进行改性使其具有疏水性,可用于油吸附。石油泄漏会破坏海洋水生生物,对环境造成巨大影响。本研究通过酶(脂肪酶、蛋白酶和葡聚糖酶)和化学(乙酰化)对椰子髓进行处理,以提高其疏水性和油吸附能力。用FTIR、SEM对样品进行周期性表征。乙酰化程度以增重百分数评价。结果表明,乙酰化椰壳具有良好的石油吸附性能,是一种低成本、环保型的溢油吸附剂。
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引用次数: 1
Effect of Different Weed Management Strategies on Population Changing Pattern of Pennisetum polystachion in Coconut Plantations of Sri Lanka 不同杂草管理策略对斯里兰卡椰林狼尾草种群变化格局的影响
Pub Date : 2019-04-01 DOI: 10.37833/cord.v35i01.12
S. Senarathne
Pennisetum polystachion is a major problematic monocotyledonous weed species and a perennial problem in intermediate zone of coconut plantations in Sri Lanka. This study was carried out to evaluate the impacts of different management systems on P. polystachion seedling emergence patterns.The tested treatments were application of glyphosate (T1), cover cropping with Pueraria phaseoloides (T2), tractor harrowing (T3), tractor slashing (T4) and tractor ploughing (T5). All the treatments were applied twice a year except T2. As T2 cover crop at the initiation of the experiment and over grown conditions were managed by harrowing once a year. Based on the reduction in weed biomass, cover cropping (T2) was the best to reduce the P. polystachion population and to reduce P. polystachion seedling emergence density in the field. Chemical weeding was the second-best method to control the P. polystachion population in the field. The effectiveness of slashing in reducing weed seedling emergence density was lower than cover cropping and chemical weeding methods. The weed seedling emergence densities were almost similar in ploughed and harrowed plots. The seed depth of emerged seedling was very high in harrowed and ploughed treatments when compared to other treatments. Results given by T3 and T5 indicates that loosening the soil creates more favorable environment for the germination of weed seeds buried in soil. Therefore, it can be argued that the elimination of weed seeds in the top 2cm or 4cm in the soil seed bank by any means is likely to reduce the level of weed infestation by about 60% to 95%. Results also indicated that burying rhizomes in ploughing and harrowing treatment plots at the depths below 30 - 40 cm is effective in controlling germination of this weed species. This experiment also suggested that keeping rhizomes on the soil surface without burying for durations of 5 – 15 days would produce weak plants with poor development.
多花狼尾草(Pennisetum polystachion)是斯里兰卡椰林中间地带的一个主要问题单子叶杂草,也是一个长年累月的问题。本研究旨在评价不同管理制度对水杨苗期出苗模式的影响。试验处理分别为草甘膦(T1)、葛根覆盖(T2)、拖拉机耙(T3)、拖拉机刈割(T4)和拖拉机翻耕(T5)。除T2外,其余治疗均为2次/年。作为T2覆盖作物,在试验开始和过度生长条件下,采用每年耙一次的方式进行管理。从减少杂草生物量的角度来看,覆盖栽培(T2)对减少多穗小檗种群和减少多穗小檗出苗密度的效果最好。化学除草是田间控制多穗小蠊种群的次优方法。刈割降低杂草出苗密度的效果低于覆盖种植和化学除草。犁地和耙地的杂草出苗密度基本相同。与其他处理相比,耙耕处理出苗的种子深度很高。T3和T5的结果表明,土壤松动有利于杂草种子的萌发。因此,可以认为,通过任何手段消除土壤种子库顶部2cm或4cm的杂草种子,可能会使杂草侵害水平降低约60%至95%。结果还表明,在30 ~ 40 cm以下的耕作和耙作处理地块中埋根状茎可有效控制该杂草的萌发。本试验还表明,将根状茎不埋埋在土壤表面5 ~ 15天会产生发育不良的弱株。
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引用次数: 2
Differential Scanning Calorimetric Analysis of Virgin Coconut Oil, Palm Olein, and their Adulterated Blends 初榨椰子油、棕榈油及其掺混物的差示扫描量热分析
Pub Date : 2019-04-01 DOI: 10.37833/cord.v35i01.10
J. Marikkar
Virgin coconut oil (VCO) is a premium product with a high market value. Its authenticity and quality assurance are important to safeguard consumers from fraudulent practices. The aim of this study was to investigate the effect of adulteration by palm olein (PO) on differential scanning calorimetric (DSC) heating and cooling profiles of VCO. Pure samples of VCO, PO and their adulterated blends (5 to 30%, w/w) were subjected to thermal analysis by DSC according to a specified temperature program. DSC thermal analysis system software and SAS statistical system were used subsequently to analyze thermal data. Both cooling and heating curves of VCO were found to be vivid for fingerprint comparison of qualitative identification at 5% level of adulteration.
维珍椰子油(VCO)是一种具有较高市场价值的优质产品。它的真实性和质量保证对于保护消费者免受欺诈行为的影响非常重要。本研究的目的是研究棕榈油素(PO)掺杂对VCO的差示扫描量热(DSC)加热和冷却曲线的影响。根据指定的温度程序,通过DSC对VCO、PO及其掺杂混合物(5至30%,w/w)的纯样品进行热分析。随后使用DSC热分析系统软件和SAS统计系统对热数据进行分析。在5%的掺假水平下,VCO的冷却和加热曲线都被发现是生动的,用于定性鉴别的指纹比较。
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引用次数: 6
Coir-Krishimithra: An Apposite Medium for Cultivation of Vegetable/ Medicinal/ Ornamental Plants Coir-Krishimithra:一种适宜栽培蔬菜/药用/观赏植物的培养基
Pub Date : 2018-10-01 DOI: 10.37833/cord.v34i1.21
S. Radhakrishnan, A. Ravindranath, Abesh Reghuvaran, G. Mg
Coir pith is a by-product of the coir fibre processing industry. Accumulation of coir pith leads to an environmental concern and its management is a major problem with all coir industrialists. Therefore biodegradation of coir pith is an essential requirement to control pollution. Coir pith is a potential wealth and can be converted into valuable organic manure by microbial degradation. A method of composting of coir pith with urea has been developed by Coir Board which uses a fungus viz., Pithplus (Pleurotus sajor caju). Application of urea releases higher concentration of ammonia in the soil making it more acidic and retards soil natural fertility. Hence an alternative cost effective nitrogen supplement needs to be developed as a substitute to urea for composting of coir pith. Coir pith can be converted to effective organic manure with the use of fungus (Pleurotus sajor caju) along with the addition of nitrogen supplements like Azolla, Neem cake and Fish waste in 1:1:1 proportion. The present study aims at the formulation of bioorganic manure from coir pith avoiding urea in the composting. Overall assessment on the physico chemical properties of the biodegraded coir pith leads to the conclusion that a combination of Azolla, Neem cake and Fish waste in 1:1:1 proportion was found to be efficient in lignin degradation and contribute to novel changes in coir pith. A study was conducted to evaluate the competence of biocompost thus produced for the cultivation of Amaranthus and Groundnut. Studies confirmed that Coir-KrishiMithra can be used as an effective growing media and hence, the use of Coir-KrishiMithra, a 100% organic manure can be entertained in homes, nurseries and fields for the cultivation of plants mainly vegetables; thereby promoting the eco-friendly organic cultivation and minimize the environmental pollution caused by chemical fertilizers.
椰胶髓是椰胶纤维加工业的副产品。椰壳髓的积累引起了环境问题,其管理是所有椰壳工业家面临的主要问题。因此,对椰髓进行生物降解是控制污染的必要条件。椰子髓是一种潜在的财富,可以通过微生物降解转化为有价值的有机肥。本文介绍了一种利用真菌木髓菌(Pleurotus sajcaju)与尿素混合堆肥的方法。施用尿素会使土壤中氨的浓度升高,使其酸性增强,阻碍土壤的自然肥力。因此,需要开发一种具有成本效益的替代补氮剂,以替代尿素用于椰子髓的堆肥。利用真菌(Pleurotus sajcaju),并按1:1:1的比例添加氮补剂,如Azolla,印度楝饼和鱼粪,可将椰子髓转化为有效的有机肥。本研究的目的是在堆肥过程中避免尿素的使用,以椰子髓为原料制备生物有机肥。对生物降解后的椰子髓的理化性质进行了综合评价,发现以1:1:1的比例将杜鹃、印楝饼和鱼废组合在一起可以有效地降解木质素,并促进了椰子髓的新变化。以苋菜和花生为研究对象,对所制备的生物堆肥的适宜性进行了评价。研究证实,Coir-KrishiMithra可以作为一种有效的生长介质,因此,使用Coir-KrishiMithra, 100%有机肥料可以在家庭,苗圃和田地中用于种植植物,主要是蔬菜;从而促进生态友好的有机种植,最大限度地减少化肥对环境的污染。
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引用次数: 0
Effect of Vermicompost on Growth of Coconut Seedlings under Field Conditions in Sri Lanka 斯里兰卡田间条件下粘虫剂对椰子幼苗生长的影响
Pub Date : 2018-10-01 DOI: 10.37833/cord.v34i1.20
S.H.S. Senarathne
Organic matter contributes in maintaining soil fertility in agriculture.  Vermicompost is rich in plant nutrients and recognized as potential organic manure source for many crops.  In this experiment, different amount of vermicompost and inorganic fertilizers were tested. The objective of the research was to evaluate the effect of vermicompost on the growth of coconut seedling in the field conditions and to reduce the cost of production of coconut plantations.Treatments were arranged in a Randomized Complete Block Design (RCBD) with three replicates. The experiment consisted of three different fertilizer treatments with vermicompost (100%) + Dolomite 500g (T1), Inorganic fertilizer (Young Palm Mixture) + Dolomite (T2) and vermicompost + Inorganic fertilizer (Young Palm Mixture) + Dolomite (T3).  Growth measurements revealed A significantly higher seedling girth, leaf production rate and early highest coconut seedling flowering percentage in the vermicompost base integrated fertilizer applied treatment when compare with other two treatments. This experiment had brought out that application of vermicompost base integrated fertilizer application system is beneficial for coconut seedlings in the field for the better field establishment and vigorous seedling growth.
在农业中,有机质有助于保持土壤肥力。蚯蚓堆肥含有丰富的植物营养成分,被认为是许多作物潜在的有机肥来源。本试验对蚯蚓堆肥和无机肥料进行了不同用量的试验。本研究的目的是评价蚯蚓堆肥在田间条件下对椰子幼苗生长的影响,以降低椰子种植园的生产成本。处理采用随机完全区组设计(RCBD),设3个重复。试验分为蚯蚓堆肥(100%)+白云石500g (T1)、无机肥(幼棕榈混合料)+白云石(T2)和蚯蚓堆肥+无机肥(幼棕榈混合料)+白云石(T3) 3种不同的施肥处理。生长测定结果表明,施用蚯蚓堆肥基肥处理的幼苗周长、产叶率和早期最高出花率均显著高于其他两种处理。本试验结果表明,田间施用蚯蚓堆肥基综合施肥系统有利于椰子苗的立地和幼苗的旺盛生长。
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引用次数: 0
Germplasm and Incentives for Boosting Coconut Production: Case Studies from the Pacific Region and Some Other Countries 促进椰子生产的种质资源和激励措施:来自太平洋地区和其他一些国家的案例研究
Pub Date : 2018-10-01 DOI: 10.37833/cord.v34i1.22
Roland Bourdeix, N. Tuivavalagi, Victor Mataora, Augustine B Jerard, Naheed Hussein
The Coconut Industry Development for the Pacific Project (CIDP) is a joint initiative of the Pacific Community, the European Union and the African, Caribbean and Pacific Group of States. The aim of CIDP is to bolster the coconut sector in the region through improving the competitiveness of small producers and strengthening production and regional integration of related markets. In the framework of this project, CIRAD (French Agricultural Research for Development) was in charge of helping design improved seed production systems and conducting a risk analysis for coconut value chain in the Pacific region. During a meeting held in April 2018 in Fiji, thirty participants from sixteen countries and territories in the Pacific region participated to a brainstorming on incentives for boosting coconut production. In June 2018, CIRAD launched an online survey on the same topic by contacting more than a thousand of coconut stakeholders worldwide. This communication presents the first results of these two initiatives regarding incentives for boosting coconut production, in the Pacific region but also in comparison with countries from other regions.           
太平洋椰子产业发展项目(CIDP)是太平洋共同体、欧洲联盟和非洲、加勒比和太平洋国家集团的一项联合倡议。CIDP的目标是通过提高小生产者的竞争力和加强相关市场的生产和区域一体化,来支持该地区的椰子部门。在该项目的框架内,法国农业研究发展中心(CIRAD)负责帮助设计改进的种子生产系统,并对太平洋地区的椰子价值链进行风险分析。2018年4月在斐济举行的一次会议上,来自太平洋地区16个国家和地区的30名与会者就促进椰子生产的激励措施进行了头脑风暴。2018年6月,CIRAD通过联系全球一千多名椰子利益相关者,就同一主题发起了一项在线调查。本通报介绍了这两项倡议在促进太平洋区域椰子生产方面的初步成果,并与其他区域的国家进行了比较。
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引用次数: 2
期刊
CORD
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