Effect of rice straw and husk biochar on vegetative growth and yield attributes of Oryza sativa L Singanayagam T havanesan 1* , Thayamini H. Seran 2 1 Department of Crop Science, Faculty of Agriculture, Eastern University, Chenkalady, Sri Lanka 2 Department of Crop Science, Faculty of Agriculture, Eastern University, Chenkalady, Sri Lanka Abstract : A research was conducted to evaluate the growth and yield of rice as influenced by rich straw and husk biochar along with chemical fertilizer. The experiment was done with six treatments. T1- recommended chemical fertilizer, T2- Rice straw (1.0 t/ha), T3-Rice husk biochar (1.0 t/ha), T4-Rice straw (0.5 t/ha) + Rice husk biochar (0.5 t/ha), T5-Rice straw (1.0 t/ha) + Rice husk biochar (0.5 t/ha) and T6-Rice straw (1.0 t/ha) + Rice husk biochar (1.0 t/ha). Recommended chemical fertilizer was incorporated to all the treatments. During the vegetative periods, the growth parameters were recorded and finally yield analysis was done. Rice plants treated in rice straw (1.0 t/ha) and husk biochar (1.0 t/ha) along with chemical fertilizer had significantly (P 0.05) in 100 seed weight between them. Hence, it can be concluded that addition of rice straw (1.0 t/ha) and husk biochar (1.0 t/ha) along with chemical fertilizer to rice field is feasible to increase the grain yield under local conditions. Key words: Biochar, Rice straw, Rice husk, Rice, Seed weight [*] Corresponding author: thayaminis@esn.ac.lk, thayasean@yahoo.com
{"title":"Effect of rice straw and husk biochar on vegetative growth and yield attributes of Oryza sativa L","authors":"Singanayagam Thavanesan, T. Seran","doi":"10.26558/IJCST.427516","DOIUrl":"https://doi.org/10.26558/IJCST.427516","url":null,"abstract":"Effect of rice straw and husk biochar on vegetative growth and yield attributes of Oryza sativa L Singanayagam T havanesan 1* , Thayamini H. Seran 2 1 Department of Crop Science, Faculty of Agriculture, Eastern University, Chenkalady, Sri Lanka 2 Department of Crop Science, Faculty of Agriculture, Eastern University, Chenkalady, Sri Lanka Abstract : A research was conducted to evaluate the growth and yield of rice as influenced by rich straw and husk biochar along with chemical fertilizer. The experiment was done with six treatments. T1- recommended chemical fertilizer, T2- Rice straw (1.0 t/ha), T3-Rice husk biochar (1.0 t/ha), T4-Rice straw (0.5 t/ha) + Rice husk biochar (0.5 t/ha), T5-Rice straw (1.0 t/ha) + Rice husk biochar (0.5 t/ha) and T6-Rice straw (1.0 t/ha) + Rice husk biochar (1.0 t/ha). Recommended chemical fertilizer was incorporated to all the treatments. During the vegetative periods, the growth parameters were recorded and finally yield analysis was done. Rice plants treated in rice straw (1.0 t/ha) and husk biochar (1.0 t/ha) along with chemical fertilizer had significantly (P 0.05) in 100 seed weight between them. Hence, it can be concluded that addition of rice straw (1.0 t/ha) and husk biochar (1.0 t/ha) along with chemical fertilizer to rice field is feasible to increase the grain yield under local conditions. Key words: Biochar, Rice straw, Rice husk, Rice, Seed weight [*] Corresponding author: thayaminis@esn.ac.lk, thayasean@yahoo.com","PeriodicalId":198819,"journal":{"name":"International Journal of Crop Science and Technology","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133250676","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 aim of this study was to plan the enterprises which apply greenhouse vegetable farming in Mersin province by Game Theory (GT) approach. The main material of this study consisted of survey data obtained from 163 greenhouse vegetable producers in Mersin Province and the data included 2013-2014 production periods. The average land size was determined as 14.47 da. According to results, 22.70% and 77.30% of the producers were determined as risk takers and risk averse, respectively. As a result of the production plans which were applied according to Game Theory approach, the production pattern changed according to the current state. Also, gross profit increased in the ratios of 15.55% and 8.46% for the producers who take and avoid risks, respectively.
{"title":"Planning of Greenhouse Vegetable Enterprises through Game Theory Approach in Mersin Province","authors":"O. Uysal, U. Gültekin","doi":"10.26558/ijcst.428181","DOIUrl":"https://doi.org/10.26558/ijcst.428181","url":null,"abstract":"The aim of this study was to plan the enterprises which apply greenhouse vegetable farming in Mersin province by Game Theory (GT) approach. The main material of this study consisted of survey data obtained from 163 greenhouse vegetable producers in Mersin Province and the data included 2013-2014 production periods. The average land size was determined as 14.47 da. According to results, 22.70% and 77.30% of the producers were determined as risk takers and risk averse, respectively. As a result of the production plans which were applied according to Game Theory approach, the production pattern changed according to the current state. Also, gross profit increased in the ratios of 15.55% and 8.46% for the producers who take and avoid risks, respectively.","PeriodicalId":198819,"journal":{"name":"International Journal of Crop Science and Technology","volume":"91 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134056587","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}
Cantekin Kivrak, S. Bawazir, Z. Samani, C. Steele, B. Sönmez
Non-storage summer dry onion crop is among the top 10 agricultural commodities in New Mexico (NM), USA. In 2000, NM was ranked the second in the nation as the leading state in growing summer dry onion. According to USDA statistical records, onion production or sales in NM was valued at $91.4 million. Mesilla Valley is one of the major onion-producing regions of NM. Due to many years of drought in the region and the concern for climate change, irrigation managers and decision makers are interested in quantifying water use or evapotranspiration (ET) and the number of acreage of onion crop grown in the Valley. This information can then be used for managing the scarce water resources of the region. Plant phenology, Landsat-8 satellite data, and USDA crop data were used to identify onion crops in the Valley (area of about 47,000 ha) and to determine their consumptive water use or ET using remote sensing Regional ET Estimation Model (REEM) from 2014 through 2016. Time series of NDVI clearly identified Fall and Spring-season onion crops in the Valley. REEM estimated Spring-season onion crop maximum ET of 973 mm in 2015 and 975 mm in 2016 during the growing season. These values compared reasonably well to ET estimates of 894 and 955 mm for the same periods (i.e. 2015 and 2016) using FAO-56 crop coefficient based method. The methodology presented could be used in other regions to identify onion crops and their consumptive water use.
{"title":"Using Plant Phenology and Landsat-8 Satellite Data to Quantify Water Use by Onion Crop in the Mesilla Valley, New Mexico","authors":"Cantekin Kivrak, S. Bawazir, Z. Samani, C. Steele, B. Sönmez","doi":"10.26558/IJCST.427945","DOIUrl":"https://doi.org/10.26558/IJCST.427945","url":null,"abstract":"Non-storage summer dry onion crop is among the top 10 agricultural commodities in New Mexico (NM), USA. In 2000, NM was ranked the second in the nation as the leading state in growing summer dry onion. According to USDA statistical records, onion production or sales in NM was valued at $91.4 million. Mesilla Valley is one of the major onion-producing regions of NM. Due to many years of drought in the region and the concern for climate change, irrigation managers and decision makers are interested in quantifying water use or evapotranspiration (ET) and the number of acreage of onion crop grown in the Valley. This information can then be used for managing the scarce water resources of the region. Plant phenology, Landsat-8 satellite data, and USDA crop data were used to identify onion crops in the Valley (area of about 47,000 ha) and to determine their consumptive water use or ET using remote sensing Regional ET Estimation Model (REEM) from 2014 through 2016. Time series of NDVI clearly identified Fall and Spring-season onion crops in the Valley. REEM estimated Spring-season onion crop maximum ET of 973 mm in 2015 and 975 mm in 2016 during the growing season. These values compared reasonably well to ET estimates of 894 and 955 mm for the same periods (i.e. 2015 and 2016) using FAO-56 crop coefficient based method. The methodology presented could be used in other regions to identify onion crops and their consumptive water use.","PeriodicalId":198819,"journal":{"name":"International Journal of Crop Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116198020","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}
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