Journal of Plantation Crops最新文献

{"title":"Enhancement of yield in nutmeg (Myristica fragrans Houtt.) through pruning","authors":"S. Aravind, S. Ankegowda, R. Kumar, K. Kandiannan, J. Rema","doi":"10.25081/JPC.2019.V47.I2.5782","DOIUrl":"https://doi.org/10.25081/JPC.2019.V47.I2.5782","url":null,"abstract":"References H., Che Wan Zanariah, C.W.N. and Jalania, B.S., 2015. Multivariate analysis of vegetative and physiological traits in Ahmad, H.F., Awar, S.I., Aziz, O. and Ali, M.A., 2014. oil palm (Elaies guineensis Jacq.) germplasm. Expert Multivariate analysis of some metric traits in bread wheat Opinion Environmental Biology 4(3): 1-5.(Triticum aestivum L.). European Journal of Biotechnology and Bioscience 1(4): 22-26. Maji, A.T. and Shaibu, A.A. 2012. Application of principal component analysis for rice germplasm characterization Anonymous. 2017. Annual report 2016-17 (Executive and evaluation. Journal of Plant Breeding and Crop summary) Published by Mathur, R. K., Director, ICARScience 4(6): 87-93.Indian Institute of Oil palm Research, Pedavegi, Andhra Pradesh, India. pp. 3. Makinde, S. C. O. and Ariyo, O. J., 2010. Multivariate analysis of genetic divergence in twenty two genotypes of Ashfaq, M., Khan, A. S., Khan S. H. U. and Ahmad, R. 2012. groundnut (Arachis hypogea L.). Journal of Plant Breeding Association of various morphological traits with yield and and Crop Science 2 (7): 192-204.genetic divergence in rice (Oryza sativa L.). International Journal of Agriculture and Biology 14 (1): 55-62. Mandal, P. K. and Babu, K. M., 2008. Bunch analysis of oil palm. Technical Bulletin, No. 8. (Published by: Kochu Corley, R.H.V. 1976. Photosynthesis and productivity. In: Babu, M., November, 2008), National Research Centre on Developments in Crop Science 1: Oil Palm Research. (Eds.) Oil Palm, Pedavegi, Andhra Pradesh. Corley, R.H.V, Hardon, J.J. and Wood, B.J.: Elsevier Scientific Publishing Company Amsterdam; 1976. pp. 55-74. Oboh, B.O. and Fakorede, M.A.B. 1990. Inter-relations among vegetative, yield and bunch quality traits in short term oil Corley, R. H. V. and Tinker, P. B. 2003. The Oil palm. 4 edition. palm progenies. Euphytica 46:7-14. Blackwell Science Ltd., Oxford. 592p. Odewale, J.O., Collins, A., Ataga, C.D., Aisueni, N.O., Henson, I. E and Harun, M. H. 2005. The influence of climatic Ikuenobe, C.E., Okoye, M.N., Odiowaya, G., Edpkpayi, conditions on gas and energy exchanges above a young oil A.A., Ahanor, M.J. and Uwadiae, E.O. 2012. Pattern of palm stand in North Kedah, Malaysia. Journal of Oil Palm genetic diversity and variability in germplasm resources of Research 17: 73-91. local and exotic coconut (Cocos nucifera L.) cultivars in Nigeria. Scholarly Journal of Agricultural ScienceIannucci, A., Codianni, P. and Cattivelli, L. 2011. Evaluation of 2 (9): 202-207.genotype diversity in oat germplasm and definition of ideotypes adapted to the mediterranean environment. Rao, V. R. and Hodgkin, T. 2002. Genetic diversity, International Journal of Agronomy 8: 1-8. conservation and utilization of plant genetic resources. Plant Cell, Tissue and Organs 68:1-19. Kumar, R.R. and Singh, S.P. 2006. Multivariate analysis and clustering of Cuphea procubens inbred lines. Genetika Richard, A.J. and Wichern, D.W. 2007. Applied multivariate 38 (1): 23-30.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69215443","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":"Development of an ablation tool for oil palm.","authors":"M. V. Prasad, T. Singh, K. Sudhakarbabu","doi":"10.25081/jpc.2018.v46.i2.3728","DOIUrl":"https://doi.org/10.25081/jpc.2018.v46.i2.3728","url":null,"abstract":"Ablation is the process of removing unopened inflorescence from oil palm plantations during juvenile period (1 to 3 years). The ablation tool developed consists of a long handle of 2.54 cm diameter GI pipe having 152.4 cm length. At one end of this pipe, a “U” shaped welded holder has been made of 1 inch flat with 5±1 mm thickness and 19 cm length, which has a width of 2 cm at the welding point, and gradually widened to 5.2 to 5.7 cm at the outer end. A sharp pointed nail having 6.5 cm length and 5 to 8 mm diameter was welded at the centre of the “U” holder. In the traditional method of removing the inflorescence, at least 2.4 leaves were cut to remove one inflorescence whereas, with the developed tool, the leaves are not damaged or removed. Farmers generally avoid removal of the inflorescence during 1 to 3 years thereby hampering the growth and yield in the forthcoming years. The efficiency of the ablation tool is 125 inflorescence per hour.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69215633","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":"Evaluation of plant extracts for antifungal activity against Colletotrichum gloeosporioides, the incitant of leaf blight in small cardamom and anthracnose of black pepper.","authors":"C. N. Biju, Ravipati Praveena","doi":"10.25081/jpc.2018.v46.i2.3720","DOIUrl":"https://doi.org/10.25081/jpc.2018.v46.i2.3720","url":null,"abstract":"Stress imposed by biological entities is considered as the major production constraint encountered by black pepper and small cardamom in India and elsewhere. Among the fungal diseases, leaf blight and anthracnose incited by Colletotrichum gloeosporioides in cardamom and black pepper, respectively, are the most prevalent and economically important diseases. In the present study, 35 plant species were evaluated to assess antifungal property against the targeted pathogen under in vitro conditions. Phytoextracts of Solanum nigrum (5%), S. torvum (20%) and Azadirachta indica (5%) exhibited maximum inhibitory effect whereas, Leucas aspera , Costus igneus , Datura stramonium , Lantana camara , Glycosmis pentaphylla and Adhatoda vasica promoted growth of the pathogen. Microscopic observations revealed abnormal morphological and structural alterations of hyphae, including increase in size and number of vacuoles, anomalous branching and abnormal swelling at hyphal tips. Information emanated from the present study indicates that, the efficacious plant species identified as potential sources of bioactive antifungal molecules could be further exploited to devise management strategies based on bio-prospecting.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69215614","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":"Coconut-growing soils of Kerala: 1. Characteristics and classification","authors":"K. M. Nair, K. A. Kumar, S. Kumar, V. Ramamurty, M. Lalitha, S. Srinivas, A. Koyal, S. Parvathy, K. Sujatha, Shivanand, R. Hegde, S. K. Singh","doi":"10.25081/jpc.2018.v46.i2.3718","DOIUrl":"https://doi.org/10.25081/jpc.2018.v46.i2.3718","url":null,"abstract":"Coconut plantations are the major land use systems in Kerala state. The tropical hot humid climate and soils of the state are considered suitable for the palm, with the exception of highlands occurring 600 m above MSL. However, the productivity of coconut is abysmally low in the state with an average productivity of around 40 nuts per year per palm. To find out whether the highly weathered and leached low activity clay soils developed in tropical hot humid climate is responsible for the low yield, an assessment of soil qualities in the coconut-growing soils of the state was made. Six distinct regions of coconut cultivation in the state were identified and delineated based on the variability of agro-climate and soils, viz., Central and Eastern Palakkad, Northern Kerala, Central Kerala, Southern Kerala, Onattukara sandy plains and coastal sandy plains. Soil profiles were studied at representative sites in each region. Investigated morphological features and sampled horizon-wise for the analysis of physical and chemical properties of the soil. Coconut-growing soils of Kerala state are in general deep and well drained, clayey or sandy having good structure permitting rapid transmission of water. The soils of Palakkad, Southern Kerala and Coastal Sandy Plains have near neutral reaction whereas the extensive areas of laterite soils of Northern and Central Kerala and sandy soils of Onattukara were strongly acid and had high levels of KCl extractable aluminium. The acid soils also analysed for low levels of basic cations, potassium, calcium and magnesium. Soils from all regions except Palakkad have low CEC. Surface and sub-soils base status were extremely low for soils of Northern and Central Kerala and Onattukara sandy plain. The soils of Central and Eastern Palakkad were classified as Typic Haplustalfs, Northern Kerala as Plinthic Humults, Central Kerala as Typic Plinthustults, Southern Kerala as Rhodic Kandiustults and the soils of sandy plains as Ustipsamments, according to soil taxonomy.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69215543","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":"Coumarin, essential oil and total phenol levels in bark and leaves of Cinnamomum species","authors":"K. Shimna, K. S. K. A. Shamina","doi":"10.19071/jpc.2017.v45.i3.3345","DOIUrl":"https://doi.org/10.19071/jpc.2017.v45.i3.3345","url":null,"abstract":"","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48228890","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":"Synchronous fruit splitting in nutmeg using plant growth regulators","authors":"K. Krishnamurthy, J. Anandaraj","doi":"10.19071/jpc.2017.v45.i3.3343","DOIUrl":"https://doi.org/10.19071/jpc.2017.v45.i3.3343","url":null,"abstract":"In this study, a simple technique with hormone treatment was developed for synchronous splitting (ripening) of nutmeg fruits. The methodology involves harvesting physiologically mature fruits, dipping the harvested fruits in 500 ppm ethrel (2-chloroethylphosphonic acid) solution for 10 minutes, and then storing them in shade. By this method, 90 to 100 per cent fruits split in 18 to 20 hours. Width of the split which helps in easy separation of nut from fruit pericarp was on par with that of naturally split fruits. The dry recovery, nut to mace ratio and fresh and dry weight of the nut and mace of the treated fruits were comparable with naturally split fruits. The intrinsic quality i.e. , oil, oleoresin and moisture content of nut and mace of treated fruits were on par with that of naturally split fruits. This indicates that nut and mace of treated fruits had similar physical and intrinsic quality parameters as that of naturally split fruits. The advantage of the method is that it is very effective in preventing aflatoxin (mycotoxin) contamination of nut and mace due to soil contact of naturally split fruits that fall on the ground. The method for synchronous fruit splitting in nutmeg is very simple and can be easily practiced by farmers. It also saves time, labour and money both for harvesting and processing of nutmeg. The cost of ethrel treatment would be around ` 800 per ton of fruit. This is the first report on the induction of synchronous and uniform fruit splitting (ripening) of pre-split harvested fruits in nutmeg.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48061704","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":"Germination and seedling establishment in cashew (Anacardium occidentale L.): An interaction between seed size, relative growth rate and seedling biomass","authors":"Babli Mog, J. Nayak, G. Mohana","doi":"10.19071/JPC.2017.V45.I2.3305","DOIUrl":"https://doi.org/10.19071/JPC.2017.V45.I2.3305","url":null,"abstract":"Seeds of cashew were used to determine the effect of seed mass (5.2 to 7.8 g) on germination, seedling emergence and growth under nursery conditions. Germination percentage and germination time showed significant correlation with seed mass. Large sized seeds had higher germination percentage (81.6%) and produced more vigorous seedlings. Per cent seedling emergence was related to seed mass with large sized seeds exhibited faster emergence. Seed mass significantly affected seedling survival and survival rate was high in seedlings arising from large sized seeds (62.9%). Seedling vigor expressed in terms of shoot and root length, leaf number, leaf area and total dry matter was significantly affected by seed mass. Seedlings that emerged from large sized seeds showed better growth and produced heavier seedlings as compared to medium sized seeds. RGR showed significant variation (0.152 to 0.240 g g-1day-1) among two seed size classes positively correlated with seed mass, leaf area (LA), unit leaf rate per unit leaf area (ULRM), root to shoot ratio (R/S) and root mass ratio (RMR) and negatively with stem mass ratio (SMR). The study concluded that the seed mass and RGR have influence on seedling growth and success of seedling establishment in cashew.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45735216","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":"Traversing the topsy-turvy terrains: The coconut sector in Kingdom of Tonga","authors":"Tevita Lautaha Kulufeinga ‘Anisi Bloomfield Jayasekhar Somasekharan, ‘Ilaisaane ‘OliviaTu’ itupou Maile Tahafitu Fa’ase’e","doi":"10.19071/JPC.2017.V45.I2.3303","DOIUrl":"https://doi.org/10.19071/JPC.2017.V45.I2.3303","url":null,"abstract":"Coconuts are inextricably linked to the culture, tradition and economy of Tonga from time immemorial. Although coconut sector enjoyed a predominant position in the national economy until the late 1980s, thereafter the sector has experienced a downfall. The 1990s and 2000s witnessed a stagnant coconut economy in Tonga and in the recent times, the role played by the sector has become insignificant. The comparative position of Tonga with respect to the major Pacific islands, in terms of production, trade and competitiveness is not advantageous to the country. The contribution of coconut sector in the national economy and export earnings has been dwindling in recent years. It was also seen that the export diversification in products and markets are absent. There are only a few exporters operating in the sector, therefore the benefit of perfect competition and economy of scale is not realized. In contrast, the coconut sector in Tonga still has the potential to provide year round income to the farmers. Therefore, the sector needs an adequate impetus in all the nodes from production to the exports, with plausible options and strategies to make it sustainable.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46130787","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":"Evaluation of elite cardamom (Elettaria cardamomum) genotypes for yield, quality and resistance to Cardamom mosaic virus","authors":"D. P. S. A. N. L. R. Senthil Kumar, S. J. A. C. B. M.N. Venugopal, M. Anandaraj","doi":"10.19071/JPC.2017.V45.I2.3307","DOIUrl":"https://doi.org/10.19071/JPC.2017.V45.I2.3307","url":null,"abstract":"Nine genotypes of cardamom (Elettaria cardamomum Maton) along with two commercial cultivars, Green Gold and Appangala 1 were evaluated for their yield and selected horticultural traits. There were significant differences amongst different genotypes with respect to yield and other traits. The genotype IC 349651 was found to be highest in yield (1048.2 kg ha-1) followed by IC 547167 (987.1 kg ha-1). The genotype IC 547167 (Appangala 2) was found to be moderately resistant to Cardamom mosaic virus under artificial conditions and rich in α terpinyl acetate content which was comparable to Appangala 1. In 2014, the genotype IC 547167 was recommended for high yield and resistance to Cardamom mosaic virus under field conditions and released as Appangala 2 for Karnataka and adjoining areas of Kerala. The variety, Appangala 2 (IC 547167) was developed through hybridization between Appangala 1 x NKE 19.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44275766","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":"Effect of certain indigenous technical knowledge on the management of red spider mite (Oligonychus coffeae) in tea","authors":"Kangkana Saikia, Mukulesh Barua","doi":"10.19071/JPC.2017.V45.I2.3308","DOIUrl":"https://doi.org/10.19071/JPC.2017.V45.I2.3308","url":null,"abstract":"An investigation was carried out at Deha Tea Estate, Assam during 2015-16 by using different indigenous technical knowledge (ITK) prevalent among different small tea growers. Fish extract at (0.25, 0.5 and 1%), Polygonum hydropiper at (2.5, 5 and 7.5%) and Azadirachtin (Neemazal-F 5%) were evaluated in field conditions against tea mite. The result showed that fish extract in combination with cow dung, cow urine and water when sprayed at one per cent concentration, significantly reduced red spider mite population (96.5%), percentage of leaves infestation (5.2%) and leaf area infested by the mite (11.6%). P. hydropiper in combination with cow urine and water when sprayed at 7.5 per cent concentration significantly reduced red spider mite population (87.5%), percentage of infestation (9.1%) and leaf area infested by the mite (12.9%). Among all the ITKs, fish extract at one per cent caused higher reduction of infestation of red spider mite followed by P. hydropiper extract at 7.5 per cent. Influence of both the treatments on the management of red spider mite was at par with that of commercial Azadirachtin.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48368280","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}