Nitrogen (N) is a major nutrient element for crop growth. Here, we identified PTR gene family in rice and analyzed their expression profile in near-isogenic lines. Plant use efficiency of nitrogen depends on several factors, including application time, rate of N applied, precipitation and other climate-related variables. The researchers integrated the nitrogen use efficiency technology with New Rice for Africa (NERICA) varieties developed by Africa Rice Center. Nitrogen-use efficiency in a long-term experimentIRRI's Long-Term Continuous Cropping Experiment is located in a 1-ha lowland rice paddy at IRRI's research farm in Los Banos (14°ll'N, 121°15'E, 21 m asl). Mechanized transplanting with side deep fertilization increases yield and nitrogen use efficiency of rice in Eastern China. Effect of Varied Irrigation Scheduling with Levels and Times of Nitrogen Application on Yield and Water Use Efficiency of Aerobic Rice Nitrogen Use Efficiency Definitions : World Nitrogen Use Efficiency for Cereal Production is 33% Agronomy Journal 91: 357-363 Importance of "YIELD" for estimating Nitrogen Use EfficiencyNitrogen use efficiency and/or fertilizer recovery in crop production systems can be computed using a wide range of methods.Those specifically designated for crop production systems follow. landraces with nitrogen use efficiency in ghana by nana muhammed opuni (10435580) this thesis is submitted to the university of ghana, legon in The purpose of this study was to the determination of the optimum levels of biochar amendment made from Melaleuca cajuputi biochar (MCB) and urea fertilizer (UF) for nitrogen use efficiency in upland rice under M. cajuputi stands. 2011). Directorate of Rice Research, Rajendranagar, Hyderabad, Andhra Pradesh *Email: mbbprasadbabu@gmail.com ABSTRACT Field studies during dry and wet season of 2011 and 2012 were made at research farm of DRR Rajendranagar to assess the role of bioactivator treated nitrogen (N) fertilization on enhancing the productivity and N use efficiency of rice. Tolerance in Rice and Nitrogen Use Efficiency in Wheat Jasper Benedict Battad Alpuerto GENERAL AUDIENCE ABSTRACT Flooding is a serious natural disaster that da mages agricultural production worldwide. (3) Weed Control. Call : 9354229384, 9354252518, 9999830584. Nitrogen fertility is an important component of rice (Oryza sativa L.) cultivation systems, especially where air and soil quality issues have prompted a search for alternatives to rice straw burning.This study examined the effects of different rice straw management practices and winter flooding on yield, N uptake, and N use efficiency. Nitrogen (N) is an essential nutrient element for plants; however, high N accumulation often leads to a decrease in photosynthetic nitrogen use efficiency (PNUE). Increasing nitrogen use efficiency with lower nitrogen application frequencies using zeolite in rice paddy fields** Qi Wu1, Taotao Chen1, Daocai Chi1*, Guimin Xia1*, Yidi Sun1, and Yonghua Song2 1College of Water Resource, Shenyang Agricultural University, Shenyang, Liaoning 110866, P.R. 32, Issue. A team of scientists have reported physical attributes and genes that help identify which types of rice use nitrogen efficiently. Zhu C(1)(2), Xiang J(3), Zhang Y(1), Zhang Y(1), Zhu D(4), Chen H(5). Based on our results, OsATG8c is considered to be a good candidate gene for increasing NUE, especially under suboptimal field … C rops take only about 30 per cent of the nitrogen fertilizer added and the rest gets washed away to cause pollution, ill-health and climate change. Shoji, S., Delegado, J., Mosier, A. R., and Miura, Y. Therefore, enhancing rice nitrogen use efficiency (NUE) is essential for the development of sustainable agriculture and has become urgently needed. Comprehensive screening of rice (Oryza sativa L. subsp. Six nitrogen rates (0, 60, 90, 120, 150 and 180 kg N/ha) and three hybrid rice varieties (AR031H, Nitrogen use efficiency of the rice variety increased with elevated levels of applied nitrogen upto 60 kg N ha −1 and thereafter declined ( Table 3 ). Nitrogen use efficiency was the highest with 45% higher N (N 145) with gypsum applied @ 100% SGR compared to 50% SGR in severe salt-affected (sandy clay loam) soil during rice crop. We have launched our mobile app, get it now. However, this yield improvement is excessively dependent on the input of nitrogen (N) fertilizer. Precision N Application Increases Yields and Nitrogen Use Efficiency of Rain-Fed Rice. landraces with nitrogen use efficiency in ghana by nana muhammed opuni (10435580) this thesis is submitted to the university of ghana, legon in China 2Water Conservancy Bureau of Donggang, Dandong, Liaoning 118000, P.R. In rice, ammonium is the major form of inorganic nitrogen. May 01, 2019. Loss of N can be minimized by removal of weeds from the field. In summary, zeolite increases the drought resistance of rice under AWD irrigation and increases water–nitrogen use efficiency. World Nitrogen Use Efficiency for Cereal Production is 33% Agronomy Journal, 91:357-363 World Phosphorus Use Efficiency for Cereal Production is 16% Agronomy Journal 109:1-8 Grain Yield Level and Nitrogen Response are Independent (maize and wheat) Improving nitrogen use efficiency in rice through enhancing root nitrate uptake mediated by a nitrate transporter, NRT1.1B. China 2Water Conservancy Bureau of Donggang, Dandong, Liaoning 118000, P.R. with about 76% of the global rice produced from irrigated-lowland rice systems (Fageria et al., 2003). The efficien t use of nitrogen is recognized as an important production factor for rice but it has always been a problem to raise the utilization rate of the rice plant and to increase efficiency of absorbed nitrogen for grain (2001). nitrogen use efficiency in rice-rice cropping system S. Krishnakumar 1 *, R. Muthukrishnan 1 , V. Rajendran 1 and R.K. Kaleeswari 2 1 Vanavarayar Institute of Agriculture, Manakkadavu, Pollachi - 642103, Tamil Nadu, India. Examining whether thresh-olds of NH4+ toxicity in rice are related to nitrogen-use efficiency (NUE) is the aim of this study. To explore the amount of reducing N fertilizer, a 2-year field experiment was conducted to investigate the effects of reducing N fertilizer and applying organic fertilizer on nitrogen use efficiency (NUE) and rice yield in red soil regions of the Southern China. Nitrogen use efficiency (NUE) is the proportion of nitrogen present that a plant absorbs and uses. Nitrogen management and cultivar effects on rice yield and nitrogen use efficiency in Northeast Thailand M. Ohnishi, T. Horie, Koki Homma , N. Supapoj, H. Takano, S. Yamamoto Research output : Contribution to journal › Article › peer-review The article is titled Meta-Analysis of Yield-Related and N-Responsive Genes Reveals Chromosomal Hotspots, Key Processes, and Candidate Genes for Nitrogen-Use Efficiency in Rice. identification of rice (oryza spp.) Scientists reveal the relationship between root microbiome and nitrogen use efficiency in rice. We identified 96, 85 and 78 PTR genes in Nipponbare, R498 and Oryza glaberrima, and the phylogenetic trees were … However, continuous RN led to a nutrient deficiency in the soil and therefore negatively impacted the NUE and rice yield. Nitrogen fertilizer management under rainfed conditions is challenging since farmers may not be able to properly time the topdressing due to extended drought or flood (i.e., excess rainfall). Application of chemical fertilizers, especially nitrogen (N), to crops has increased dramatically in the last half century and therefore developing crop varieties with improved N use efficiency (NUE) is urgent for sustainable agriculture. Plant N-use efficiency (NUE) was determined using a 15 N-labeling method. Abstract: 【Objective】 In order to provide a theoretical basis for rational management of irrigation and nitrogen (N), the effects of the different water and nitrogen application models on the nitrogen absorption and translocation, and nitrogen use efficiency of indica hybrid rice, nitrogen transformation characteristic in paddy soil and their relationships with rice yield were studied. Introduction Rice is the staple food for half the world’s population. genotypes for N use efficiency. Indica varieties show better nitrogen use efficiency (NUE) compared with japonica varieties in the field; NRT1.1B contributes to this natural variation in rice. Nhd1 balances rice growth period and N use efficiency. Abbreviations: NUE_nitrogen use efficiency, N_nitrogen, P_phosphorus, CEC_cation exchange capacity, TSP_triple super phosphate, Ndff_nitrogen derived from fertilizer. Their findings have just been published in the premier international journal, Frontiers in Plant Science. PDF. An understanding of physiological and biochemical traits associated with high grain yield and efficiency of nitrogen (N) use is important to the development of genotypes for DSR. Domesticated rice varieties with high … Keywords: super rice, yield potential, nitrogen use efficiency, Green Super Rice 1. The objective of this research was to study the efficiency and response of using nitrogen in lowland rice cultivars grown in the southwest of Tocantins, Brazil. Agronomic nitrogen use efficiency (AE) for studied rice genotypes varied significantly, and ranged from 3.63 to 32.9 and from 2.72 to 34.12 kg grain yield produced per kg of nitrogen applied in 2016 and 2017 respectively. Soil potassium, sodium, and calcium content significantly increased with Z addition, further affecting rice grain yield. In rice (Oryza sativa L.), well-developed aerenchyma is formed to promote oxygen transport from the shoot to the root tips as an adaptati … As nitrogen fertilizers are highly dynamic in soils, its careful management American Journal of Plant Sciences Vol.09 No.11(2018), Article ID:88109,10 pages 10.4236/ajps.2018.911165. sustainable rice yield (Naher et al. For their study, the scientists compared three high NUE and three low NUE cultivars of rice with normal or low dose of nitrate or urea as the sole source of nitrogen (N). Nitrogen use efficiency and some rela tive parameters at different N levels in rice cultivars in 2011 ..... 52 Table 10. EVALUATION OF SELECTED COATED UREA ON NITROGEN USE EFFICIENCY OF RICE By ROSMARINA B ,17, AHMAD KHARIRI October 2016 Chairman : Professor Mohd Khanif Yusop, PhD Faculty : Agriculture Urea is the main nitrogen (N) fertilizer sources applied in the rice production. As a result, the BNI phenomenon in rice, to the extent that it is present, is expected to reflect on NUE, in particular ammonium-use efficiency, of the rice crop. Domesticated rice varieties with high nitrogen use efficiency (NUE) reduce fertilizer for sustainable agriculture. Urea deep placement (UDP) in lowland rice fields is one of the best currently applicable management techniques to increase N use efficiency … Our ability to feed the world's current population is, in part, a result of the Green Revolution, … Determine the effects of co-use of chicken biochar and only urea on nitrogen concentration in a tropical acid soil cultivated with MR219 rice … GK Topic, A team of scientists have reported physical attributes and genes that help identify which types of rice use nitrogen efficiently. Precision N Application Increases Yields and Nitrogen Use Efficiency of Rain-Fed Rice. PDF. However, this yield improvement is excessively dependent on the input of nitrogen (N) fertilizer. Even though significant genotypic differences in nitrogen use efficiency exist in rice, genetic selection for this trait has not been carried out systematically [6,7,8]. Amar Datta. yield of rice can be significantly increased. Analysed data for rice grain yield, Nitrogen Use Efficiency (NUE), dry matter yield and plant height did not show a significant difference (P. 0.05) due to the influence of SRI and flooding water management systems, whereby SRI yield ranged from 3.6 – 30.9 g grain yieldpot-1 and flooding was 5.9 – 25.0g grain yield pot-1. Nitrogen is normally a key factor in achieving optimum rice yields. Box 933, 1099 Manila, Philippines ; Natural Resources Institute, Chatham, Kent , UK Key words: 15N, microbial biomass, nitrogen uptake efficiency, Oryza sativa , soil nitrogen Abstract Recent field studies on irrigated rice at the IRRI research farm indicate efficient use of fertilizer-N Keywords: Nitrogen Use Efficiency (NUE), Polymer Coated Urea (PCU), rice, Normal Urea Introduction Nitrogen (N) plays a central role in modern agriculture. China The efficiency of the conventional prilled urea in rice culture can be increased to some extent by injecting it into the sub-surface by the instrument "Pneumatic Urea Injector". So the objective of this study was to determine the possibility to improve the N use efficiency of irrigated rice in Iran by comparing the farmers’ N- Increasing nitrogen use efficiency with lower nitrogen application frequencies using zeolite in rice paddy fields** Qi Wu1, Taotao Chen1, Daocai Chi1*, Guimin Xia1*, Yidi Sun1, and Yonghua Song2 1College of Water Resource, Shenyang Agricultural University, Shenyang, Liaoning 110866, P.R. PDF. Keywords: Alanine aminotransferase, Cucumber, Nitrogen use efficiency, Rice Background Effort to increase rice production in the world must con-tinue to meet the increase in rice demand. Premium PDF Package. Increased nitrogen-use efficiency in transgenic rice plants over-expressing a nitrogen-responsive early nodulin gene identified from rice expression profiling. Zhang, Zhu, Shen, Ji et al. gene improved nitrogen use efficiency in transgenic rice, which indicate the conservation of function of this gene in monocot and dicot. nitrogen use efficiency (NUE) in rice ( Oryza sativa L.). Nitrogen (N) deficiency is one of the most yield-limiting nutrients in upland rice growing regions word wide. The low agronomic N use efficiency (kg grain yield increase per kg N applied) of this system is below. Nitrogen (N) deficiency is one of the most yield-limiting nutrients in upland rice growing regions word wide. Rice has a number of transporters and key enzymes, such as GS, for the efficient transportation and assimilation of nitrogen in roots ( Tabuchi et al ., 2007 ). Field experiments were conducted during the dry and the wet seasons 2016 at the research station of Africa Rice at Ndiaye in Senegal. Novel matrix-based slow-release urea enhances nitrogen use efficiency in rice production. Nitrogen (N) loss is one of the key problems faced by rice farmers, and Nitrogen-use efficiency in rice is often poor as a result of high N loss through volatilization, leaching, and denitrification. Development of nitrogen use efficient (NUE) rice is essential for more environmentally friendly rice … In rice (Oryza sativa L.), well-developed aerenchyma is formed to promote oxygen transport from the shoot to the root tips as an adaptati … High N loss and low N use efficiency (NUE), caused by high N fertilizer inputs and inappropriate fertilization patterns, have become important issues in the rice (Oryza sativa L.) growing regions of southern China. However, it can lead to low wheat yields and reduced nitrogen use efficiency compared with dryland wheat (DW). (4) Varietal Differences in Nitrogen-use Efficiency. show the genetic-controlled diversity of rice flowering time (heading date) response to N. N-mediated heading date1 (Nhd1) is activated by glutamine and upregulates florigen Hd3a but downregulates Fd-GOGAT for N assimilation. Branching out for a new green revolution. Varieties differ in their ability to absorb and utilize nutrients and genetic variation in nitrogen use efficiency (NUE) in rice was reported by many workers. Rice is a wetland plant that adapts to flooding conditions, but … From marginal clay loam saline-sodic soil, NUE remained higher with N 130 along with gypsum @ 100% SGR which was Feb 07, 2020. The applied nitrogen in crop production is easily lost through ammonia emission and nitrogen leaching. For the improvement of rice yield and agronomic nitrogen use efficiency (NUE), four ISSM scenarios consisting of different nitrogen (N) fertilization rates relative to the local farmers' practice (FP) rate were carried out, namely, N1 (25 % reduction), N2 (10 % reduction), N3 (FP rate) and N4 (25 % increase). Here, we perform genome-wide association analysis of a diverse rice pop … Judicious and proper use of fertilizers can markedly increase the yield and improve the quality of rice [6]. Rice can absorb less than 40% of applied nitrogen fertilizer, whereas the unabsorbed nitrogen fertilizer may cause environmental problems, such as algal blooms in freshwater and increased production of nitrous oxide, a greenhouse gas which is 300 times more potent than carbon dioxide. Experimental warming reduces fertilizer nitrogen use efficiency in a double rice cropping system. Application of nitrogen (N) fertilizer has improved crop yield in the world during the past five decades but with considerable negative impacts on the environment. This may be primarily because of the complexity involved in the overall phenotype and its evaluation and the non-availability of genetic tools to use. Author information: (1)State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, P.R. PENG*,**, and Y. LI*,+ Ministry of Agriculture Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the This efficiency is essential for the development of sustainable agriculture and has become urgently needed. These results not only reveal the relationship between the root microbiome and NUE in rice subspecies, but demonstrate the role of NRT1.1B in the establishment of root microbiota. Over-application of nitrogen fertilizer in fields has had a negative impact on both environment and human health. Keywords: Rice, split application, nitrogen level, nitrogen use efficiency indices, transplanting time Introduction Rice (Oryza sativa L.) is one of the major food crops and is a staple food for more than half of the world population. ment. International Rice Research Institute, P.O. Over-application of nitrogen fertilizer in fields has had a negative impact on both environment and human health. Domesticated rice varieties with high nitrogen use efficiency (NUE) reduce fertilizer for sustainable agriculture. Thus the lowest nitrogen use efficiency (115.34 kg grain/kg N applied) was noted at 100 kg N ha −1 and the highest (344.50 kg grain/kg N applied) at 60 kg N ha −1. The development of crop plants with more efficient nitrogen usage is, therefore, an important research goal in achieving greater agricultural sustainability. We utilized genetically modified rice lines over-expressing a barley alanine aminotransferase ( HvAlaAT) to help characterize pathways which lead to more efficient use of nitrogen. Adaptation of cultivars or genotypes with high N use efficiency is a potential strategy in optimizing N requirements of crops, lowering the cost of production and … Unfortunately, average global rice yield is far below than its genetic potential. Nitrogen (N) is a key element of proteins and nucleic acids, and thus crucial for crop growth and development. Correlation analyses indicated that both BNI abilities and 1,9-decanediol amounts of root exudates were positively correlated with plant ammonium-use efficiency and ammonium preference. The rice-wheat (RW) cropping system is one of the most prevalent double-cropping systems used to farm the Jianghan Plain in China. PDF. Main. This further suggests that indica-enriched bacteria may contribute to higher nitrogen-use efficiency in indica rice. Nitrogen (N) deficiency is one of the most yield-limiting nutrients in upland rice growing regions word wide. Summary. Scientists reveal the relationship between root microbiome and nitrogen use efficiency in rice. China. So the objective of this study was to determine the possibility to improve the N use efficiency of irrigated rice in Iran by comparing the farmers’ N- For the improvement of rice yield and agronomic nitrogen use efficiency (NUE), four ISSM scenarios consisting of different nitrogen (N) fertilization rates relative to the local farmers' practice (FP) rate were carried out, namely, N1 (25 % reduction), N2 (10 … In a major boost to the scientific efforts for crop improvement to save nitrogenous pollution and fertilizers worth billions, Indian biotechnologists identified candidate genes for nitrogen use efficiency (NUE) in rice. Regime and Nitrogen Fertilizer on Yield and Nitrogen Use Efficiency of Irrigated Rice in the Sahel Koffi Djaman New Mexico State University, kdjaman@nmsu.edu Valere C. Mel Africa Rice Center, V.Mel@cgiar.org Lamine Diop Universite Gaston Berger, iseld2004@yahoo.fr Abdoulaye Sow Africa Rice Center, A.Sow@cgiar.org Raafat El-Namaky Two different rice cultivars, Yangdao 6 [Indica rice cultivar with high nitrogen-use efficiency (NUE)] and Nongken 57 (Japonica rice cultivar with low NUE) were used to study the relationship between NUE and nitrification activity in the rice seedling rhizosphere soil using a rhizobox with three compartments, and a soil-slicing method. Irrigated rice in Iran involves global rice production and global nitrogen (N) consumption. The efficien t use of nitrogen is recognized as an important production factor for rice but it has always been a problem to raise the utilization rate of the rice plant and to increase efficiency of absorbed nitrogen for grain production. Nitrogen use efficiency in crops: lessons from Arabidopsis and rice. In rice growing regions nitrogen (N) is one of the most yield‐limiting nutrients for rice production. Background Excessive nitrogen (N) application rate with low N use efficiency (NUE) caused a considerable amount of N losses, especially ammonia volatilization (AV). Proper N fertilizer reduction (RN) could significantly reduce AV. Deep application of nitrogen fertilizer can substantially reduce the ammonia volatilization by reducing the amount of ammonium nitrogen in the flood, thus improving the nitrogen use efficiency (NUE) (Huda et al, 2016; Islam et al, 2016, 2018b). The national average yield of rice is about 2.8t ha-1 which is lower compared to the world average productivity of 4.6 tones ha-1 mainly constrained by soil nutrient deficiencies. The varieties were classified into 2 types, Indica and Japonica, both of which included varieties with varying ecosystems (irrigated lowland, rain-fed l owland and upland) and degrees of improvement, with improved varieties defined as those A collaborative team led by Prof. Bai Yang and … We have launched our mobile app, get it now. Sustainable agriculture is very important topic. The article is titled “Meta-Analysis of Yield-Related and N-Responsive Genes Reveals Chromosomal Hotspots, Key Processes, and Candidate Genes for Nitrogen-Use Efficiency in Rice “. or. Improving agronomic N use efficiency is key to balance rice yield and eating quality. Increasing of nitrogen use efficiency offers the greatest Download PDF Package. Introduction The global demand for crop production is expected to dou-ble by 2050 as a result of the increasing size of the human population, dietary shift that has resulted from greater levels of affluence and biofuel consumption (Tilman et al. Nevertheless, rice can suffer NH4+ toxicity, and excessive use of nitrogen (N) fertilizer has raised NH4+ in many paddy soils to levels that reduce vege-tative biomass and yield. Nitrogen use efficiency was the highest with 45% higher N (N 145) with gypsum applied @ 100% SGR compared to 50% SGR in severe salt-affected (sandy clay loam) soil during rice crop. China Rice (Oryza sativa L.) feeds to two-third of the global population by serving as staple food. Status of NUE Crops. Corn One of the crops under study for improvement of nitrogen use efficiency is corn, an important global food crop that requires intensive amount of nitrogen fertilizer. However, like most crops, corn only absorbs a small amount of the nitrogen that is applied to it, leading to economic problems to growers. This further suggests that indica-enriched bacteria may contribute to higher nitrogen-use efficiency in indica rice. Table 9. Abstract. A team of scientists reports physical attributes and genes that help identify which types of rice use nitrogen efficiently. For rice production, nitrogen fertilizer is an important factor but low N fertilizer use efficiency remains a problem. https://www.frontiersin.org/articles/10.3389/fagro.2020.607792 However, the effects The nitrogen uptake efficiency (NUpE) and nitrogen use efficiency (NUE) significantly increased in the transgenic rice under both optimal and suboptimal N conditions. From marginal clay loam saline-sodic soil, NUE remained higher with N 130 along with gypsum @ 100% SGR which was These results not only reveal the relationship between the root microbiome and NUE in rice subspecies, but demonstrate the role of NRT1.1B in the establishment of root microbiota. Free PDF. Bacon and D. P. Heenan Effect of nitrogen fertilizer timing on crop growth and nitrogen use efficiency by different rice varieties in southeastern Australia 97 D. P. Heenan and P. E. Bacon Fertilizer nitrogen recovery in mechanized dry seeded rice … This results in low nitrogen availability under rain-fed conditions. in respect of nutrient uptake and conserve the nitrogen under rice cultivation. species. Enhancing nitrogen use efficiency in wheat sown into rice residue and effect of straw management on soil health inrice-wheat system in North West IndiaYadvinder-Singh1 (yadvinder16@rediffmail.com)Manpreet Singh1, H.S. Taotao Yang, Yanhua Zeng, Yanni Sun, Jun Zhang, Xueming … Improving nitrogen use efficiency and thus fertilizer efficiency is important to make agriculture more sustainable, [20] by reducing pollution and production cost and increasing yield. Indian J. Agron 46: 453–457. Improved nitrogen use efficiency, particularly for N, is an important goal in cropping system development. Taotao Yang, Yanhua Zeng, Yanni Sun, Jun Zhang, Xueming … The team compared 3 high NUE and 3 low NUE cultivars of rice with a normal or low dose of nitrate or urea as the sole source of nitrogen (N). The team compared 3 high NUE and 3 low NUE cultivars of rice with a normal or low dose of nitrate or urea as the sole source of nitrogen (N). hm-2, which was significantly higher than those under T1 and FM. INTRODUCTION Rice is developing as a major staple food crop of Burkina Faso. A greenhouse experiment was conducted with the objective to evaluate nineteen upland rice (Oryza sativa. japonica Kato) germplasm resources with different nitrogen (N) efficiency levels is effective for improving N use efficiency (NUE) while reducing pollution and providing high quality, yield, and efficiency agriculture.We investigated 14 indices of 38 varieties under three N application levels to assess differences among genotypes. L.) genotypes for N use efficiency. Vlek and Stumpe (1978)reportedthateven under good fertilization management, nitrogen recovery rarely exceeds 40%. However, the effects Total recovery (Nitrogen Use Efficiency) of 15 N labelled urea by rice (Grain +Straw) Direct seeding of sprouted seeds under puddled condition (M 1) registered higher N use efficiency of 12.35, 17.24% in grain and straw, respectively, with a total N use efficiency of 29.59% compared to … Download with Google Download with Facebook. Carbon to nitrogen (C:N) ratio expresses the amount of N in a plant or in organic materials. Download Free PDF. Experimental warming reduces fertilizer nitrogen use efficiency in a double rice cropping system. The problem with the increased N application often leads to a reduction in NUE. Plant, Cell & Environment, Vol. We found that N-mediated heading date-1 (Nhd1) can directly activate florigen gene OsHd3a in rice. Keywords: NUE, upland rice, 15N, phosphorus, nitrogen. This was accomplished by Prof. Nandula Raghuram, Dr. Supriya Kumari and Dr. Narendra Sharma from the School of Biotechnology, Guru Gobind Singh Indraprastha University, […] When C:N ratio is: High - 30 or more parts C to 1 part N (like for rice straw) – The N in organic material is not enough to support decomposing microorganisms – Microorganisms will use N from surrounding soil to meet their needs N utilization procedures generally can be divided into uptake …. Improving agronomic N use efficiency is key to balance rice yield and eating quality. Key words: organics, fertilizer nitrogen, grain, straw yield, nutrient uptake, nitrogen use efficiency, rice Introduction Rice (Oryza sativa L.) is one of the of the most important cereal crop and the staple food feeding over half of the world’s population. Low nitrogen (N) use efficiency (NUE) is among the major reasons for low average yield. For many decades, the process for improving a nitrogen use efficient (NUE) cultivar has been a really tedious and challenging task for scientists at a global scale. different nitrogen fertilizer levels and the timing of application and quantify hybrid rice nitrogen use efficiency. The experiments involved nine commercial rice cultivars (BRS-Jaçanã, Metica-1, Best-2000, BRSGO-Guará, BRS-Alvorada, BRA-01381, AN-Cambará, BRS 7-Taim and EPAGRI-109), which were cropped in two distinct environments. The low agronomic N use efficiency (kg grain yield increase per kg N applied) of this system is below. New solutions are therefore urgently needed to simultaneously increase yields while maintaining or preferably decreasing applied N to maximize the nitrogen use efficiency (NUE) of crops.
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