D. Gd, Abdul Fiyaz R, Viswanatha Kp, S. Lv, Chimote Vp, Raghuwanshi Ks, Amolic Vl, Chaithanya K, Shivani D, Bharat Kumar -, R. Vs, S. B, Sundaram Rm
An experiment was carried out during Rabi 2021-22 at the experimental plot of ICAR-Indian Institute of Rice Research, Hyderabad. Two diverse elite indica lines of rice (Jaya and isogenic line of MTU1010) were used to generate the F2 population to study genetic variability parameters, heritability, and expected genetic advance under selection. Higher GCV, PCV, and heritability coupled with high genetic advance were estimated for the number of productive tillers, panicle weight, number of filled grains, and single plant yield, which indicated that heritability of these traits was under the control of additive gene action. Stringent selection for such traits will be rewarding.
{"title":"Assessment of Genetic Variability Parameters Among the F2 Population of a Cross Between Jaya × Isogenic Line of MTU1010 for Yield and its Component Traits in Rice","authors":"D. Gd, Abdul Fiyaz R, Viswanatha Kp, S. Lv, Chimote Vp, Raghuwanshi Ks, Amolic Vl, Chaithanya K, Shivani D, Bharat Kumar -, R. Vs, S. B, Sundaram Rm","doi":"10.58297/xqhh9504","DOIUrl":"https://doi.org/10.58297/xqhh9504","url":null,"abstract":"An experiment was carried out during Rabi 2021-22 at the experimental plot of ICAR-Indian Institute of Rice Research, Hyderabad. Two diverse elite indica lines of rice (Jaya and isogenic line of MTU1010) were used to generate the F2 population to study genetic variability parameters, heritability, and expected genetic advance under selection. Higher GCV, PCV, and heritability coupled with high genetic advance were estimated for the number of productive tillers, panicle weight, number of filled grains, and single plant yield, which indicated that heritability of these traits was under the control of additive gene action. Stringent selection for such traits will be rewarding.","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72758622","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}
India’s rice-wheat cropping system (RWCS) is going through a paradigm shift to address resource degradation and sustainability issues. The increasing level of soil degradation has made soil biological health an important aspect of managing the problems of RWCS through understanding the role of microbes in enhancing soil health and by increasing the adoption of conservation agriculture-based practices. Our two-year study revealed that soil biological health, as measured by soil acetylene reductase activity (ARA), soil chlorophyll, microbial biomass carbon (MBC), soil dehydrogenase enzyme activity, and soil alkaline phosphatase activity (APA), was significantly impacted by the rice and wheat cultivation methods. The system of rice intensification (SRI) and zero tillage wheat (ZTW) system had significantly higher values for all the studied microbial parameters. The application of Anabaena-Pseudomonas biofilm formulation along with 75% recommended dose of nutrients (RDN) (90 kg N/ha and 19.35 kg phosphorus (P/ha) significantly improved all studied microbial parameters in both rice and wheat. The microbial properties such as dehydrogenase enzyme activity, alkaline phosphatase activity and microbial biomass carbon (MBC) had significantly higher values in treatment with RDN over 75% RDN indicating the role of optimal fertilization in soil biological health maintenance. A significant improvement in ARA and soil chlorophyll in inoculated treatment showed superior performance of inoculated microbes over inherent soil microbes in nitrogen fixation. The study of a combination of different rice and wheat cultivation methods and their influence in the long run on soil biological health in RWCS emphasizes the need for soil biological health maintenance considering its significant role in the system’s sustainability.
印度的水稻-小麦种植系统(RWCS)正在经历一场范式转变，以解决资源退化和可持续性问题。土壤退化程度的日益加剧，使土壤生物健康成为管理RWCS问题的一个重要方面，通过了解微生物在增强土壤健康方面的作用，并通过增加采用保护性农业为基础的做法。通过对土壤乙炔还原酶活性(ARA)、土壤叶绿素、微生物生物量碳(MBC)、土壤脱氢酶活性和土壤碱性磷酸酶活性(APA)的研究，我们发现水稻和小麦栽培方式对土壤生物健康有显著影响。水稻集约化(SRI)和免耕小麦(ZTW)体系的所有微生物参数均显著高于水稻集约化(SRI)体系。在75%推荐营养剂量(90 kg N/ha和19.35 kg P/ha)的条件下，施用水藻-假单胞菌生物膜制剂显著改善了水稻和小麦的所有微生物参数。在RDN超过75%的情况下，脱氢酶活性、碱性磷酸酶活性和微生物生物量碳(MBC)等微生物特性均显著高于RDN，说明优化施肥对土壤生物健康的维持作用。接种处理的ARA和土壤叶绿素含量显著提高，表明接种微生物的固氮能力优于土壤固有微生物。通过对不同水稻和小麦种植方式组合及其对RWCS土壤生物健康长期影响的研究，强调了土壤生物健康维护的必要性，因为土壤生物健康对系统的可持续性具有重要作用。
{"title":"Enhancing Soil Health Through Microbial Inoculation and Changing Cultivation Methods in Rice-Wheat Cropping System","authors":"A. Shahane, Shivay Yashbir Singh","doi":"10.58297/gisl2194","DOIUrl":"https://doi.org/10.58297/gisl2194","url":null,"abstract":"India’s rice-wheat cropping system (RWCS) is going through a paradigm shift to address resource degradation and sustainability issues. The increasing level of soil degradation has made soil biological health an important aspect of managing the problems of RWCS through understanding the role of microbes in enhancing soil health and by increasing the adoption of conservation agriculture-based practices. Our two-year study revealed that soil biological health, as measured by soil acetylene reductase activity (ARA), soil chlorophyll, microbial biomass carbon (MBC), soil dehydrogenase enzyme activity, and soil alkaline phosphatase activity (APA), was significantly impacted by the rice and wheat cultivation methods. The system of rice intensification (SRI) and zero tillage wheat (ZTW) system had significantly higher values for all the studied microbial parameters. The application of Anabaena-Pseudomonas biofilm formulation along with 75% recommended dose of nutrients (RDN) (90 kg N/ha and 19.35 kg phosphorus (P/ha) significantly improved all studied microbial parameters in both rice and wheat. The microbial properties such as dehydrogenase enzyme activity, alkaline phosphatase activity and microbial biomass carbon (MBC) had significantly higher values in treatment with RDN over 75% RDN indicating the role of optimal fertilization in soil biological health maintenance. A significant improvement in ARA and soil chlorophyll in inoculated treatment showed superior performance of inoculated microbes over inherent soil microbes in nitrogen fixation. The study of a combination of different rice and wheat cultivation methods and their influence in the long run on soil biological health in RWCS emphasizes the need for soil biological health maintenance considering its significant role in the system’s sustainability.","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84872606","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}
K. B, Ramakrishnan Cv, Padmavathi Ch, S. Y, S. N, Tushara M
In recent years, leaf folder incidence has been increasing in all rice ecosystems and is abundant during the wet season. Presently farmers are dependent on the use of toxic chemical pesticides alone for their management. Hence, an attempt was made to nominate genotypes developed at Agriculture Research Station, Bapatla for screening against leaf folder under the AICRIP entomology program. Of the 16 genotypes evaluated at multi- locations during the Kharif season for two years, 2020 and 2021, BPT 2699 was found promising in 2-8 locations. BPT 3034 and BPT 3059 were promising in 2-6 locations, four entries BPT 2677, BPT 2954, BPT 3049 and BPT 2932 were promising in 3- 5 locations. The majority of these entries consistently outperformed the check variety (TN1) for leaf folder resistance and can be used as donors in future breeding programmes.
{"title":"Screening of Rice Genotypes for Resistance to Leaf Folder, Cnaphalocrocis medinalis Guenee","authors":"K. B, Ramakrishnan Cv, Padmavathi Ch, S. Y, S. N, Tushara M","doi":"10.58297/hmcm2151","DOIUrl":"https://doi.org/10.58297/hmcm2151","url":null,"abstract":"In recent years, leaf folder incidence has been increasing in all rice ecosystems and is abundant during the wet season. Presently farmers are dependent on the use of toxic chemical pesticides alone for their management. Hence, an attempt was made to nominate genotypes developed at Agriculture Research Station, Bapatla for screening against leaf folder under the AICRIP entomology program. Of the 16 genotypes evaluated at multi- locations during the Kharif season for two years, 2020 and 2021, BPT 2699 was found promising in 2-8 locations. BPT 3034 and BPT 3059 were promising in 2-6 locations, four entries BPT 2677, BPT 2954, BPT 3049 and BPT 2932 were promising in 3- 5 locations. The majority of these entries consistently outperformed the check variety (TN1) for leaf folder resistance and can be used as donors in future breeding programmes.","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79573014","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}
An investigation was carried out to study the variability, heritability, and genetic advance as per cent of mean for yield and yield components in 100 rice landraces along with four checks at Regional Agricultural Research Station, Maruteru during Kharif, 2021. Analysis of variance revealed significant differences among the landraces for all the characters indicating sufficient genetic variation in the experimental material under study. The studies on variability, heritability, and genetic advance as per cent mean revealed small differences between GCV and PCV that were recorded for all the characters studied, indicating less environmental influence on these characters. Moderate levels of PCV and GCV, high heritability coupled with high genetic advance as per cent of mean were recorded for plant height, panicle length, grain yield, plant, and test weight indicating the effectiveness of simple selection in the improvement of these traits.
{"title":"Studies on Genetic Variability, Heritability, Genetic Advance for Yield, and Yield Components in Rice Landraces","authors":"Pravallika Y, R. Bnvsr, A. J, Anand Kumar Advslp","doi":"10.58297/pdtr9988","DOIUrl":"https://doi.org/10.58297/pdtr9988","url":null,"abstract":"An investigation was carried out to study the variability, heritability, and genetic advance as per cent of mean for yield and yield components in 100 rice landraces along with four checks at Regional Agricultural Research Station, Maruteru during Kharif, 2021. Analysis of variance revealed significant differences among the landraces for all the characters indicating sufficient genetic variation in the experimental material under study. The studies on variability, heritability, and genetic advance as per cent mean revealed small differences between GCV and PCV that were recorded for all the characters studied, indicating less environmental influence on these characters. Moderate levels of PCV and GCV, high heritability coupled with high genetic advance as per cent of mean were recorded for plant height, panicle length, grain yield, plant, and test weight indicating the effectiveness of simple selection in the improvement of these traits.","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91069272","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}
E. Ahmad, Ashok K. Singh, K. –, M. K. Barnwal, Binay Kumar -, Varsha Rani -, Saha Pb
Aerobic rice varietal and weed management trials under direct seeding were carried out at Birsa Agricultural University Rice Experimental Area, Kanke, Ranchi in the wet seasons of 2017 and 2018. Efforts were made to select better high-yielding varieties and improved production technology for aerobic rice cultivation. Dhaincha (Sesbania aculeata), Cowpea (Vigna unguiculata), and urd bean (Vigna mungo) were grown along with direct seeded rice, uprooted and used as a green mulch, 25 days after seeding. Six varietal trials were conducted under aerobic conditions during the 2017 and 2018 wet seasons in which the entries RP 6191-HHZ1-Y4-Y1-Y1 (6.90 t ha-1), PA 6129 (hybrid) (6.45 t ha-1), RP 6273-HHZ4-DT3LI1-LI1 (6.10 t ha-1), CR Dhan 201 (5.185 t ha-1), US 380(hybrid) (5.28 t ha-1), NVSR 2107 (4.73 t ha-1), IIRRH 124 (hybrid) (4.70 t ha-1) with early maturity were found promising. In varietal trials, intermediate plant height (100 to 110 cm), non-lodging and high yield (>4.0 t ha-1) were major criteria for selection. Two to three irrigations were applied as per the requirement. Naveen variety under aerobic conditions produced maximum yield with 125 kg N per hectare in both years. Among weed control methods, rice+ dhaincha+ pre-emergence application of pendimethalin @ 0.75 g a.i. per hectare in 2017 and rice+ dhaincha+2,4 D @ 0.8 kg a. i. per hectare as post- emergence application produced maximum yield with weed control efficiency of 61.4% in 2018.
2017年和2018年雨季，在兰契坎克的比尔萨农业大学水稻试验区进行了旱作水稻品种和杂草管理试验。努力选育好氧水稻高产品种和改进生产技术。扎因茶(Sesbania aculeata)、豇豆(Vigna unguiculata)和豆荚(Vigna mungo)与直接播种的水稻一起种植，在播种后25天将其连根拔起并用作绿色覆盖物。2017年和2018年雨季，在好氧条件下对6个早熟品种RP 6191-HHZ1-Y4-Y1-Y1 (6.90 t ha-1)、PA 6129 (6.45 t ha-1)、RP 6273-HHZ4-DT3LI1-LI1 (6.10 t ha-1)、CR Dhan 201 (5.185 t ha-1)、US 380(5.28 t ha-1)、NVSR 2107 (4.73 t ha-1)、IIRRH 124 (4.70 t ha-1)进行了试验。在品种试验中，中株高(100 ~ 110 cm)、不倒伏和高产(>4.0 t hm -1)是主要的选择标准。按要求进行了两到三次灌溉。在好氧条件下，每公顷施用125公斤氮肥的Naveen品种在两年内产量最高。在杂草防治方法中，2017年水稻+扎因茶+苗期前施用0.75 g a.i. /公顷，苗期后施用水稻+扎因茶+ 2.4 D @ 0.8 kg a.i. /公顷产量最高，2018年杂草防治效率为61.4%。
{"title":"Varietal Improvement and Weed Management for Aerobic Rice Cultivation in the Drought-Prone Jharkhand State","authors":"E. Ahmad, Ashok K. Singh, K. –, M. K. Barnwal, Binay Kumar -, Varsha Rani -, Saha Pb","doi":"10.58297/kvjd5357","DOIUrl":"https://doi.org/10.58297/kvjd5357","url":null,"abstract":"Aerobic rice varietal and weed management trials under direct seeding were carried out at Birsa Agricultural University Rice Experimental Area, Kanke, Ranchi in the wet seasons of 2017 and 2018. Efforts were made to select better high-yielding varieties and improved production technology for aerobic rice cultivation. Dhaincha (Sesbania aculeata), Cowpea (Vigna unguiculata), and urd bean (Vigna mungo) were grown along with direct seeded rice, uprooted and used as a green mulch, 25 days after seeding. Six varietal trials were conducted under aerobic conditions during the 2017 and 2018 wet seasons in which the entries RP 6191-HHZ1-Y4-Y1-Y1 (6.90 t ha-1), PA 6129 (hybrid) (6.45 t ha-1), RP 6273-HHZ4-DT3LI1-LI1 (6.10 t ha-1), CR Dhan 201 (5.185 t ha-1), US 380(hybrid) (5.28 t ha-1), NVSR 2107 (4.73 t ha-1), IIRRH 124 (hybrid) (4.70 t ha-1) with early maturity were found promising. In varietal trials, intermediate plant height (100 to 110 cm), non-lodging and high yield (>4.0 t ha-1) were major criteria for selection. Two to three irrigations were applied as per the requirement. Naveen variety under aerobic conditions produced maximum yield with 125 kg N per hectare in both years. Among weed control methods, rice+ dhaincha+ pre-emergence application of pendimethalin @ 0.75 g a.i. per hectare in 2017 and rice+ dhaincha+2,4 D @ 0.8 kg a. i. per hectare as post- emergence application produced maximum yield with weed control efficiency of 61.4% in 2018.","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72810501","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 current study reveals the effect of inconsistent nitrogen treatments on yield and yield attributes in the System of Rice Intensification (SRI) and conventional practices when compared during Kharif 2018 and 2019. Growth parameters like plant height, tillers per plant, yield attributes viz; length of panicle, number of filled and unfilled grains per panicle, test weight, straw yield, and harvest index were compared under both conventional and SRI methods. Subplots comprising four nitrogen management practices like control (N1),100% organic (N2), 50% organic+50% inorganic (N3) 100% inorganic (N4) were taken. The maximal yield was recorded in SRI (5265 kg ha-1) than conventional cultivation i.e., Normal Transplanting (4168 kg ha-1). Among the nitrogen management practices 50% inorganic + 50% organic treatments (N3) showed better performance when compared to 100% inorganic (N4), followed by 100% organic (N2) and control (N1). The pooled analysis of grain yield was observed to be highest in the N3 treatment (5551 kg ha-1), followed by N4 (5185 kg ha-1), N2 (4988 kg ha-1), and control N1 (3142 kg ha-1). A similar pattern was also seen pertaining to the yield attributes.
本研究揭示了在2018年和2019年哈里夫期间，不一致的氮肥处理对水稻集约化系统(SRI)和常规做法的产量和产量属性的影响。生长参数，如株高，每株分蘖数，产量属性，即;比较了常规和SRI方法下的穗长、每穗灌浆和未灌浆粒数、试重、秸秆产量和收获指数。采用对照(N1)、100%有机(N2)、50%有机+50%无机(N3) 100%无机(N4) 4种氮肥管理方式的子样区。SRI产量最高(5265 kg hm -1)，高于常规栽培，即正常移栽(4168 kg hm -1)。氮肥处理中，50%无机+ 50%有机(N3)处理的氮肥产量高于100%无机(N4)处理，其次是100%有机(N2)和对照(N1)处理。综合分析结果显示，N3处理籽粒产量最高(5551 kg ha-1)，其次为N4 (5185 kg ha-1)、N2 (4988 kg ha-1)和对照N1 (3142 kg ha-1)。在yield属性中也可以看到类似的模式。
{"title":"Comparative Analysis of Different Nitrogen Treatments on Yield and Its Attributes in SRI and Conventional Cultivation","authors":"Venkatanna B, Latha Pc, S. D, M. R","doi":"10.58297/snzz6760","DOIUrl":"https://doi.org/10.58297/snzz6760","url":null,"abstract":"The current study reveals the effect of inconsistent nitrogen treatments on yield and yield attributes in the System of Rice Intensification (SRI) and conventional practices when compared during Kharif 2018 and 2019. Growth parameters like plant height, tillers per plant, yield attributes viz; length of panicle, number of filled and unfilled grains per panicle, test weight, straw yield, and harvest index were compared under both conventional and SRI methods. Subplots comprising four nitrogen management practices like control (N1),100% organic (N2), 50% organic+50% inorganic (N3) 100% inorganic (N4) were taken. The maximal yield was recorded in SRI (5265 kg ha-1) than conventional cultivation i.e., Normal Transplanting (4168 kg ha-1). Among the nitrogen management practices 50% inorganic + 50% organic treatments (N3) showed better performance when compared to 100% inorganic (N4), followed by 100% organic (N2) and control (N1). The pooled analysis of grain yield was observed to be highest in the N3 treatment (5551 kg ha-1), followed by N4 (5185 kg ha-1), N2 (4988 kg ha-1), and control N1 (3142 kg ha-1). A similar pattern was also seen pertaining to the yield attributes.","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90567333","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 use of nitrogen (N) fertilizers in rice fields as a source of nutrition is the major source of emission of nitrous oxide (N2O). Two key factors which control the flux of N2O at the field level are the amount of N supplied and the efficiency at which it is absorbed by plants. To reduce the N2O emissions, optimum N fertilizer application (in terms of input rate and time of application) and ideal fertilizer selection are crucial. Optimizing N use efficiency (NUE) is crucial to sustain productivity and profitability. Depending on edaphic and climatic conditions, improved N management can dramatically cut greenhouse gases (GHGs) emissions. Producers must ensure that the kind, rate, and time of N application do not result in substantial losses owing to volatilization, leaching, or denitrification. Adoption of best nitrogen management practices like deep placement of urea, use of nitrification inhibitors, urease inhibitors, and slow-release nitrogen fertilizers will reduce the N loss and increase NUE. The goal of this review is to discuss in detail the various technologies that have been developed and refined to improve NUE and protect the environment.
{"title":"Efficient Nitrogen Management Technologies for Sustainable Rice Production","authors":"V. S, L. D, Hare Ch, M. R, Sundaram Rm","doi":"10.58297/vzzh6068","DOIUrl":"https://doi.org/10.58297/vzzh6068","url":null,"abstract":"The use of nitrogen (N) fertilizers in rice fields as a source of nutrition is the major source of emission of nitrous oxide (N2O). Two key factors which control the flux of N2O at the field level are the amount of N supplied and the efficiency at which it is absorbed by plants. To reduce the N2O emissions, optimum N fertilizer application (in terms of input rate and time of application) and ideal fertilizer selection are crucial. Optimizing N use efficiency (NUE) is crucial to sustain productivity and profitability. Depending on edaphic and climatic conditions, improved N management can dramatically cut greenhouse gases (GHGs) emissions. Producers must ensure that the kind, rate, and time of N application do not result in substantial losses owing to volatilization, leaching, or denitrification. Adoption of best nitrogen management practices like deep placement of urea, use of nitrification inhibitors, urease inhibitors, and slow-release nitrogen fertilizers will reduce the N loss and increase NUE. The goal of this review is to discuss in detail the various technologies that have been developed and refined to improve NUE and protect the environment.","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"124 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87811306","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. D, M. R, S. B, M. Tuti, Aarti Singh, S. Saha, Sudhakara Tm, T. I., Sandhyarani A, V. S, Arun Mn, Venkatanna B
An experiment was conducted at the Indian Institute of Rice Research (IIRR) farm, ICRISAT for three consecutive kharif and rabi seasons from 2016 to 2018 to evaluate varieties under System of Rice Intensification (SRI) and Normal Transplanting (NTP) method. A total of 46 cultivars including hybrids (10), High yielding varieties (HYVs) (28) and elite cultures (8) were tested. Data pooled over years and seasons indicated that SRI was significantly superior in terms of number of tillers, number of panicles per square meter, days for 50% flowering and grain yield with low inputs viz; energy, man power and irrigation. Hybrids, HYVs and elite culture recorded a grain yield of 6.54 t/ha, 5.65 t/ha and 5.50 t/ha under SRI as compared to 5.13, 4.59 and 4.58 t/ha, respectively under NTP, thereby indicating that SRI excelled NTP in grain yield. Pooled data of six seasons, three years among the cultivars indicated that SRI recorded higher grain yield (5.90 t/ha) over NTP (4.77 t/ha) with mean percent grain yield increase of 23.4%. Intensification method was also promising over conventional transplanting in terms of energy use efficiency (SRI 10.17% over NTP 6.20%) and economy parameters (B:C ratio 2.0 in SRI and 1.20 in NTP). Water productivity was higher in SRI (7.08 kg/mm/ha) than NTP (3.93 kg/mm/ha).
{"title":"Comparison of Rice Cultivars (Oryza sativa. L.) under SRI and Normal Transplanting Method for Resource Conservation and Productivity Enhancement in Irrigated System","authors":"S. D, M. R, S. B, M. Tuti, Aarti Singh, S. Saha, Sudhakara Tm, T. I., Sandhyarani A, V. S, Arun Mn, Venkatanna B","doi":"10.58297/ytge7776","DOIUrl":"https://doi.org/10.58297/ytge7776","url":null,"abstract":"An experiment was conducted at the Indian Institute of Rice Research (IIRR) farm, ICRISAT for three consecutive kharif and rabi seasons from 2016 to 2018 to evaluate varieties under System of Rice Intensification (SRI) and Normal Transplanting (NTP) method. A total of 46 cultivars including hybrids (10), High yielding varieties (HYVs) (28) and elite cultures (8) were tested. Data pooled over years and seasons indicated that SRI was significantly superior in terms of number of tillers, number of panicles per square meter, days for 50% flowering and grain yield with low inputs viz; energy, man power and irrigation. Hybrids, HYVs and elite culture recorded a grain yield of 6.54 t/ha, 5.65 t/ha and 5.50 t/ha under SRI as compared to 5.13, 4.59 and 4.58 t/ha, respectively under NTP, thereby indicating that SRI excelled NTP in grain yield. Pooled data of six seasons, three years among the cultivars indicated that SRI recorded higher grain yield (5.90 t/ha) over NTP (4.77 t/ha) with mean percent grain yield increase of 23.4%. Intensification method was also promising over conventional transplanting in terms of energy use efficiency (SRI 10.17% over NTP 6.20%) and economy parameters (B:C ratio 2.0 in SRI and 1.20 in NTP). Water productivity was higher in SRI (7.08 kg/mm/ha) than NTP (3.93 kg/mm/ha).","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86344270","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. Kawure, A. Garba, A. Fagam, Y. Shuaibu, M. Sabo, R. Bala
{"title":"Performance of Lowland Rice (Oryza sativa L.) as Influenced by Combine Effect of Season and Sowing Pattern in Zigau","authors":"S. Kawure, A. Garba, A. Fagam, Y. Shuaibu, M. Sabo, R. Bala","doi":"10.36959/973/440","DOIUrl":"https://doi.org/10.36959/973/440","url":null,"abstract":"","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74652236","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}
E. Remigius C, A. Christopher O, E. Babatunde S, A. Akintayo T
{"title":"Effects of Biochar Concentrations and Fertilizer Types on Drip-Irrigated Upland Rice Performance","authors":"E. Remigius C, A. Christopher O, E. Babatunde S, A. Akintayo T","doi":"10.36959/973/439","DOIUrl":"https://doi.org/10.36959/973/439","url":null,"abstract":"","PeriodicalId":17022,"journal":{"name":"Journal of Rice Research and Developments","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75335360","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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