scholarly journals Improving Nitrogen Use Efficiency in Cereal Grain Production with Optical Sensing and Variable Rate Application

2002 ◽  
Vol 94 (4) ◽  
pp. 815 ◽  
Author(s):  
William R. Raun ◽  
John B. Solie ◽  
Gordon V. Johnson ◽  
Marvin L. Stone ◽  
Robert W. Mullen ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Optical Sensing ◽  
Variable Rate ◽  
Grain Production ◽  
Nitrogen Use ◽  
Variable Rate Application ◽  
Cereal Grain ◽  
Use Efficiency

scholarly journals Improving Nitrogen Use Efficiency in Cereal Grain Production with Optical Sensing and Variable Rate Application

2002 ◽  
Vol 94 (4) ◽  
pp. 815-820 ◽  
Author(s):  
William R. Raun ◽  
John B. Solie ◽  
Gordon V. Johnson ◽  
Marvin L. Stone ◽  
Robert W. Mullen ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Optical Sensing ◽  
Variable Rate ◽  
Grain Production ◽  
Nitrogen Use ◽  
Variable Rate Application ◽  
Cereal Grain ◽  
Use Efficiency

scholarly journals Use efficiency of variable rate of nitrogen prescribed by optical sensor in corn

Revista CERES ◽  
2016 ◽  
Vol 63 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Jardes Bragagnolo ◽  
Telmo Jorge Carneiro Amado ◽  
Rafael Pivotto Bortolotto
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Optical Sensor ◽  
Soil Surface ◽  
Variable Rate ◽  
Nitrogen Use ◽  
Uniform Rate ◽  
Major Benefit ◽  
Use Efficiency ◽  
Nitrogen Rates

ABSTRACT The efficiency of nitrogen fertilizer in corn is usually low, negatively affecting plant nutrition, the economic return, and the environment. In this context, a variable rate of nitrogen, prescribed by crop sensors, has been proposed as an alternative to the uniform rate of nitrogen traditionally used by farmers. This study tested the hypothesis that variable rate of nitrogen, prescribed by optical sensor, increases the nitrogen use efficiency and grain yield as compared to uniform rate of nitrogen. The following treatments were evaluated: 0; 70; 140; and 210 kg ha-1 under uniform rate of nitrogen, and 140 kg ha -1 under variable rate of nitrogen. The nitrogen source was urea applied on the soil surface using a distributor equipped with the crop sensor. In this study, the grain yield ranged from 10.2 to 15.5 Mg ha-1, with linear response to nitrogen rates. The variable rate of nitrogen increased by 11.8 and 32.6% the nitrogen uptake and nitrogen use efficiency, respectively, compared to the uniform rate of nitrogen. However, no significant increase in grain yield was observed, indicating that the major benefit of the variable rate of nitrogen was reducing the risk of environmental impact of fertilizer.

In-Season Optical Sensing Improves Nitrogen-Use Efficiency for Winter Wheat

2009 ◽  
Vol 73 (5) ◽  
pp. 1566-1574 ◽  
Author(s):  
F. Li ◽  
Y. Miao ◽  
F. Zhang ◽  
Z. Cui ◽  
R. Li ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Nitrogen Use Efficiency ◽  
Optical Sensing ◽  
Nitrogen Use ◽  
Use Efficiency

ROLE OF CONSERVATION AGRICULTURE IN IMPROVING PRODUCTION WATER AND NITROGEN EFFICIENCY OF WHEAT UNDER RAINFED CONDITIONS

2020 ◽  
Vol 51 (4) ◽  
pp. 1139-1148
Author(s):  
Othman & et al.
Keyword(s):  
Crop Rotation ◽  
Nitrogen Use Efficiency ◽  
Agricultural Research ◽  
Research Work ◽  
Conservation Agriculture ◽  
Nitrogen Efficiency ◽  
Research Station ◽  
Wheat Varieties ◽  
Nitrogen Use ◽  
Use Efficiency

The research work was conducted in Izra’a Research station, which affiliated to the General Commission for Scientific Agricultural Research (GCSAR), during the growing seasons (2016 – 2017; 2017 – 2018), in order to evaluate the response of two durum wheat verities (Douma3 and Cham5) and two bread wheat varieties (Douma4 and Cham6) to Conservation Agriculture (CA) as a full package compared with Conventional Tillage system (CT) under rainfed condition using lentils (Variety Edleb3) in the applied crop rotation. The experiment was laid according to split-split RCBD with three replications. The average of biological yield, grain yield,  rainwater use efficiency and nitrogen use efficiency was significantly higher during the first growing season, under conservation agriculture in the presence of crop rotation, in the variety Douma3 (7466 kg. ha-1, and 4162kg. ha-1, 19.006 kg ha-1 mm-1,  39.62 kg N m-2respectively). The two varieties Douma3 and Cham6 are considered more responsive to conservation agriculture system in the southern region of Syria, because they recorded the highest grain yields (2561, 2385 kg ha-1 respectively) compared with the other studied varieties (Cham5 and Douma4) (1951 and 1724 kg ha-1 respectively). They also exhibited the highest values of both rainwater and nitrogen use efficiency.

Grain Yield and Nitrogen Use Efficiency of Mid-seasonIndicaRice Cultivars Applied at Different Decades

2015 ◽  
Vol 41 (3) ◽  
pp. 422 ◽  
Author(s):  
Cheng-Xin JU ◽  
Jin TAO ◽  
Xi-Yang QIAN ◽  
Jun-Fei GU ◽  
Bu-Hong ZHAO ◽  
...  
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Use ◽  
Use Efficiency

Combining Ability of Traits Related to Nitrogen Use Efficiency in Eighteen Maize Inbred Lines

2014 ◽  
Vol 40 (5) ◽  
pp. 838 ◽  
Author(s):  
Chao CUI ◽  
Ju-Lin GAO ◽  
Xiao-Fang YU ◽  
Zhi-Jun SU ◽  
Zhi-Gang WANG ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Combining Ability ◽  
Inbred Lines ◽  
Nitrogen Use ◽  
Maize Inbred Lines ◽  
Use Efficiency

Differences of Plant-Type Characteristics between Rice Cultivars with High and Low Levels in Yield and Nitrogen Use Efficiency

2010 ◽  
Vol 36 (6) ◽  
pp. 1011-1021
Author(s):  
Qing ZHANG ◽  
Chun-Yuan YIN ◽  
Hong-Cheng ZHANG ◽  
Hai-Yan WEI ◽  
Qun MA ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Rice Cultivars ◽  
Plant Type ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Low Levels
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