scholarly journals Effects of Straw Return and Feed Addition on the Environment and Nitrogen use Efficiency in the Rice–Crayfish System

2021 ◽  
Author(s):  
Pengli Yuan ◽  
Mingli Ni ◽  
Cougui Cao ◽  
Ligeng Jiang ◽  
Anas Iqbal ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Compensation Effect ◽  
Fertilizer Application ◽  
Utilization Efficiency ◽  
Effective Utilization ◽  
Nitrogen Utilization Efficiency ◽  
Management Measures ◽  
Feed Addition ◽  
Straw Return ◽  
Use Efficiency

Abstract Purpose Understanding the direction of nitrogen flow in the rice-crayfish system (RC) and optimizing the rate of nitrogen fertilizer application (ORN) are of great significance for sustainable development of RC. Methods To this end, a field experiment involving straw and feed treatment was conducted to delineate the flow of the nitrogen present in the straw (straw-N) and feed (feed-N). Second, under different feed and straw treatments, we carried out a mesocosm experiment with different rates of 15N-labeled nitrogen fertilizer application to explore the optimal rate under the effects of feed-N and straw-N supply.Results The results showed that at 75 kg N ha-1(75N), 14% and 1.86% of feed-N and 4.3% and 8.78% of straw-N is absorbed by crayfish and rice, respectively. The percentage of feed-N and straw-N lost to the environment was the lowest at 75N, i.e., 84.48% and 86.92%, respectively. Using straw return to the field and feeding as the basic management measures for RC, we observed that the rice yield was the highest under 75N, and the highest nitrogen utilization efficiency (NUE) was 25%, and the highest the percentage of soil storing nitrogen by the fertilizer-derived was 34% (lost to the environment, at least 41%).Conclusions ORN could help in the effective utilization of feed-N and straw-N via a compensation effect, promote the absorption and transport of nitrogen, and ultimately lead to an improvement in NUE in RC.

Interaction of erect panicle genotype and nitrogen fertilizer application on the source-sink ratio and nitrogen use efficiency in rice

2022 ◽  
Vol 278 ◽  
pp. 108430
Author(s):  
Olusegun Idowu ◽  
Yuanzheng Wang ◽  
Koki Homma ◽  
Tetsuya Nakazaki ◽  
Zhengjin Xu ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Source Sink

scholarly journals YIELD AND AGRONOMIC EFFICIENCY OF SUNFLOWER IN RESPONSE TO NITROGEN FERTILIZER APPLICATION AND SOWING SEASON

2018 ◽  
Vol 31 (4) ◽  
pp. 871-881
Author(s):  
Rafael Delgado Martínez ◽  
Wilberth Alfredo Poot Poot ◽  
Sergio Castro Nava ◽  
Mª. Teresa de Jesús Segura Martínez ◽  
Miguel Emilio Moreno Ortega
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
High Yield ◽  
Economic Losses ◽  
Yield Response ◽  
Agronomic Efficiency ◽  
Use Efficiency ◽  
Sowing Season

ABSTRACT Agronomic responses to the use of agricultural inputs have been used in agriculture to identify the optimal level of nutrients to be supplied for high yield. This strategy helps to avoid economic losses and excessive application of fertilizers that has caused pollution of aquifers and soil degradation. The aim of the study was to evaluate water use efficiency, agronomic efficiency of nitrogen, heat units and use of evapotranspiration in yield and its components in sunflowers under hot climate conditions in function of nitrogen fertilizer application during two sowing season. The experiment was conducted in the field. The treatments were two sowing seasons and three levels of nitrogen fertilizer application and one control: 0, 60, 80 and 120 kg N ha-1. The nitrogen source was urea. The experimental design was complete random blocks with factorial array and four replications. The occurrence of cv. Cobalto sunflower phenological stages were not modified by the treatments. Urea favored agronomic efficiency and water use efficiency. Yield components were modified positively, with increasing receptacle area, 100-grain weight, and grain yield per receptacle. Application of nitrogen fertilizer favored sunflower development, although environmental conditions are of critical importance as demonstrated by a clear interaction between the yield response to fertilizer application and the environment where the plants grew.

Comparisons of D-Value Method and 15N-tracing Method on Calculating the Nitrogen Fertilizer Utilization Efficiency of Flue-Cured Tobacco

2013 ◽  
Vol 726-731 ◽  
pp. 1457-1462
Author(s):  
Mao Mao Hou ◽  
Xiao Hou Shao ◽  
Jing Nan Chen ◽  
You Bo Yuan ◽  
Fu Zhang Ding ◽  
...  
Keyword(s):  
N Fertilization ◽  
Water Levels ◽  
Nitrogen Utilization ◽  
Utilization Efficiency ◽  
N Availability ◽  
N Accumulation ◽  
Effective Utilization ◽  
Nitrogen Utilization Efficiency ◽  
Tracing Method ◽  
D Value

Nitrogen utilization efficiency (NUE) was a hot topic in the study area of crop cultivation, most scholars tented to calculate NUE by D-value method, which could well reflected the total absorption of N nutrient by crops; and on the other hand, the tracing technique could precisely calculated the N content which crops absorbed from N fertilizer. In this study, the flue-cured tobaccos were treated with 2 N levels and 3 water levels, and the D-value method and the tracing method was adopted to calculate the nitrogen utilization efficiency. Results showed that the RD value was more than double the RN value, and there were no relationships between the results calculated by the D-value method and the tracing method, the treatment with higher RN value could not always obtain a higher RD value; besides, water deficiency or excess could both decreased NUE, through affecting the N availability or through the elution of the N nutrient. Taken as the whole, 6g/plant N combined with 800mm irrigation water was more beneficial for the effective utilization of N fertilization, and which combined with 1000mm was more beneficial for the N accumulation of tobacco plants.

scholarly journals Nitrogen Use Efficiency and Yield of Maize Varieties as affected by Nitrogen rate in Mid Altitude Areas of Western Ethiopia

2019 ◽  
Author(s):  
Tolera Abera Goshu ◽  
Dagne Wegary Gissa ◽  
Tolessa Debele Dalessa
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
Nitrogen Use ◽  
Agronomic Efficiency ◽  
Maize Varieties ◽  
Use Efficiency ◽  
Fertilizer Rates ◽  
Western Ethiopia

Maize (Zea mays L.) is the most widely grown important crop in mid altitude areas of intensive maize-based cropping system of western Ethiopia. Agronomic management is the most important input for getting potential yield and high net returns in hybrid maize production. A field experiment was carried out on farmers’ field to find out the effect of varieties (four maize) and nitrogen fertilizer rate (55, 110 kg N ha-1) with one control on yield components and nitrogen use efficiency of different maize varieties in 2013 and 2014 cropping season. It was laid with randomized complete block design in factorial arrangement with three replications. Mean grain yield, thousand seed weight, dry biomass and harvest index of maize varieties were significantly differed among farms and varieties of maize. Application of nitrogen fertilizer rates was significantly increased mean grain yield maize varieties. Interaction of maize varieties with nitrogen fertilizer rates was significantly affected all yield components of maize varieties. Application half and full recommended nitrogen fertilizer gave mean grain yield advantages of 31 and 41 % over control maize varieties planted without nitrogen application. Maize varieties producing higher mean grain yield was also giving higher mean dry biomass. Mean nitrogen up take was varied from 225 to 357 kg ha-1 among varieties of maize. Higher agronomic efficiency of all maize varieties was obtained from maize planted with application half recommended nitrogen fertilizer compared to full recommend. Agronomic efficiency was ranged from 18 to 33 produced among maize varieties. Significantly higher nitrogen up take efficiency of maize varieties was achieved from maize planted with full recommended nitrogen fertilizer application. Considerably higher nitrogen use efficiency of maize varieties was realized from all maize varieties planted with application half recommended nitrogen fertilizer. Application of half recommended nitrogen fertilizer was gave 32 % fertilizer N use efficiency advantage as compared to full recommended nitrogen fertilizer. Maize varieties BH-661>BH-660> BH-543>BH-540>BH-140 were desirable varieties for further promotion work and use by smallholder farmers in mid altitude area of western Ethiopia.

scholarly journals Effect of the Applied Fertilization Method under Full Straw Return on the Growth of Mechanically Transplanted Rice

Plants ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 399
Author(s):  
Jichao Tang ◽  
Ruoyu Zhang ◽  
Hechao Li ◽  
Jun Zhang ◽  
Shaoqiang Chen ◽  
...  
Keyword(s):  
Dry Matter ◽  
Ammonium Carbonate ◽  
Fertilizer Application ◽  
Dry Matter Accumulation ◽  
Straw Decomposition ◽  
Nitrogen Use ◽  
Compound Fertilizer ◽  
Straw Return ◽  
Use Efficiency ◽  
Application Methods

This study aimed to improve nitrogen utilization and alleviate the inhibition of straw decomposition during early tillering and the growth of paddy after straw return. Specifically, three different nitrogen fertilizer (base fertilizer) application methods were tested under full straw return: applying the compound fertilizer once (J1), applying the compound fertilizer twice (J3) and applying the ammonium carbonate fertilizer plus compound fertilizer (J2). Full straw return without fertilizer (CK1) and no straw return without fertilizer (CK2) were used as the controls. The results showed that treatment with ammonium carbonate fertilizer combined with compound fertilizer (J2) significantly enhanced straw decomposition, light interception and dry matter accumulation at an early stage of tillering, but reduced tiller occurrence at a late tillering stage. Grain yield was affected due to reduced dry matter accumulation, nitrogen use efficiency and number of effective panicles. There were no significant differences in rice growth, nitrogen use efficiency and grain yield between the one-time or two-time compound fertilizer application methods. In contrast, treatment with ammonium carbonate fertilizer combined with compound fertilizer (J2) under full straw return effectively improved straw decomposition and accelerated the return of green and tillering. In addition, the proportion of ammonium carbonate fertilizer affected the nutrient utilization efficiency and yield at later stages.

scholarly journals Soil carbon sequestrations by nitrogen fertilizer application, straw return and no-tillage in China's cropland

2009 ◽  
Vol 15 (2) ◽  
pp. 281-305 ◽  
Author(s):  
FEI LU ◽  
XIAOKE WANG ◽  
BING HAN ◽  
ZHIYUN OUYANG ◽  
XIAONAN DUAN ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
No Tillage ◽  
Straw Return

scholarly journals Foliar Spray of Nitrogen Fertilizer on Raised Bed Increases Yield of Transplanted Aman Rice over Conventional Method

ISRN Agronomy ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
M. H. M. Bhuyan ◽  
Mst. R. Ferdousi ◽  
M. T. Iqbal
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Conventional Method ◽  
Nitrogen Fertilizer ◽  
Foliar Spray ◽  
Fertilizer Application ◽  
Foliar Nitrogen ◽  
Use Efficiency ◽  
Raised Bed ◽  
Planting Method

Bed planting with foliar nitrogen fertilizer application of rice production systems is very new, and research on it is still at introductory phase. Influence of foliar application of nitrogen fertilizer on growth and yield of transplanted aman rice and evaluation of water and fertilizer application efficiency of rice-fallow-rice cropping system were investigated under raised bed cultivation method. Results showed that foliar spray in bed planting method increased grain yield of transplanted aman rice up to 9.33% over conventional method. Foliar nitrogen fertilizer application in bed planting method increased the number of panicle m−2, number of grains panicle−1, and 1000-grain weight of rice than the conventional method. Sterility percentage and weed infestation were lower at foliar nitrogen fertilizer application in bed planting method than the conventional method. Thirty-nine percent of irrigation water and time for application could be saved through foliar nitrogen spray in bed planting than conventional method. Water use efficiency for grain and biomass production was higher by foliar nitrogen fertilizer application in bed planting than conventional method. Likewise, agronomic efficiency of foliar nitrogen fertilizer application in bed planting method was higher than the conventional method. This study concluded that foliar nitrogen spray in bed planting method is a new approach to get fertilizer and water use efficiency as well as higher yield compared to existing agronomic practice in Bangladesh.

Study on Nitrogen Utilization Efficiency of Flue-Cured Tobacco with 15N Tracing Technique

2012 ◽  
Vol 518-523 ◽  
pp. 520-524 ◽  
Author(s):  
Mao Mao Hou ◽  
Xiao Hou Shao ◽  
Li Hua Chen ◽  
Ting Ting Chang ◽  
Wei Na Wang ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Nitrogen Utilization ◽  
Utilization Efficiency ◽  
Fertilizer N ◽  
Irrigation Amount ◽  
N Accumulation ◽  
N Application ◽  
Tobacco Plants ◽  
Total N ◽  
Nitrogen Utilization Efficiency

Abstract. Raising nitrogen utilization efficiency could not only cut the fertilizer costs, but also reduce the N loss and residual, which benefits a lot to agricultural production and environmental protection. In this experiment, the 15N tracing technique was employed in order to clear the accumulation and whereabouts of fertilizer N in flue-cured tobacco plants, besides, the tobaccos were treated by six different water-nitrogen modes, for the sake of finding out the best design with the highest nitrogen utilization efficiency. The results showed that more N application contributed to more fertilizer N accumulation, also increased the content of total N; Excess irrigation restrained the tobacco plants' absorption of fertilizer N, ultimately leading to the low utilization efficiency of nitrogen fertilizer; After apex pruning, the N offering ability of the soil was much stronger than that of nitrogen fertilizer, and the fertilizer N accounts a relatively small part for the total N in tobacco plants, the highest nitrogen utilization efficiency was 24.16%, recorded in the design of 800mm irrigation amount and 6g/plant pure N application(T2), Meanwhile, the agronomic characters and crop yield was observed, tobaccos in T2 design performed better than the average level of field-cultivated tobaccos, the conclusions could be obtained that T2 design was preferable, which achieved the highest nitrogen utilization efficiency when ensured the normal growth and good harvest of flue-cured tobacco.

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