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Agricultural Water Management
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#1Jin Zhao (CAU: China Agricultural University)
#2Xiaoguang Yang (CAU: China Agricultural University)H-Index: 18
Last.Shuang Sun (CAU: China Agricultural University)H-Index: 2
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Abstract Maize (Zea mays L.) is an important cereal crop grown worldwide. With the increase in human food demand but limited land and water resources, precise spatially explicit knowledge about the maize production capacity through agricultural management practices (e.g., using recommended nutrient and water inputs, RNWI, by local agronomists) is essential to guide the future policy, research, development, and investment. Here, we used a well-validated crop model (APSIM-Maize) for 1981–2010 comb...
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#1Changjian Li (CAU: China Agricultural University)H-Index: 1
#2Yunwu Xiong (CAU: China Agricultural University)H-Index: 4
Last.Guanhua Huang (CAU: China Agricultural University)H-Index: 26
view all 7 authors...
Abstract Irrigation and fertilizer management are essential for sustainable development of agriculture in the arid and semiarid regions. In order to obtain high yield production, over irrigation and fertilization are frequently conducted by the farmer which results in a series of environmental problems in particular in the shallow groundwater areas. In this paper, two-year field experiments were conducted to investigate the effect of irrigation and fertilization regimes on grain yield, water and...
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#1S.K. Dingre (Mahatma Phule Krishi Vidyapeeth)
#2S.D. Gorantiwar (Mahatma Phule Krishi Vidyapeeth)
Abstract Sugarcane is a major agro-industrial crop in semiarid regions and generally has high evapotranspiration. Standardized reference evapotranspiration (ET) and location specific crop coefficients are used to estimate crop evapotranspiration. However, precise information on crop coefficient (Kc) is a major impediment in semiarid environments. Field studies were conducted during two seasons of 2015 and 2016 in clay soils to determine crop evapotranspiration and crop coefficients (Kc) of sugar...
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#1Keith L. Bristow (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 33
#2Jirka Šimůnek (UCR: University of California, Riverside)H-Index: 49
Last.Altaf Ali Siyal (Mehran University of Engineering and Technology)H-Index: 8
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Abstract The HYDRUS model can be used to evaluate the effects of different soil surface treatments at the bottom of the furrow, different initial nitrogen fertilizer locations, and different furrow irrigation rates on deep drainage and solute leaching in furrow irrigated systems. This paper extends our 2012 study, in which we considered only one irrigation cycle and ignored the effects of plants. As a result of considering only one irrigation cycle, a large amount of water was used to change the...
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#1Barry Allred (USDA: United States Department of Agriculture)H-Index: 2
#2Luis Martinez (USDA: United States Department of Agriculture)H-Index: 3
view all 11 authors...
Abstract Effective and efficient methods are needed to map agricultural subsurface drainage systems. Visible-color (VIS-C), multispectral (MS), and thermal infrared (TIR) imagery obtained by unmanned aerial vehicles (UAVs) may provide a means for determining drainage pipe locations. Aerial surveys using a UAV with VIS-C, MS, and TIR cameras were conducted at 29 agricultural field sites in the Midwest U.S.A. to evaluate the potential of this technology for mapping buried drainage pipes. Overall r...
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#1P. B. DeLaune (A&M: Texas A&M University)H-Index: 14
#2P. Mubvumba (A&M: Texas A&M University)
Last.E. Kimura (Texas A&M AgriLife Extension Service)
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Abstract Water is the limiting factor for crop production within the southern US Great Plains and it has become a critical resource for multiple stakeholders. Hence, efficient irrigation and cropping systems are of paramount importance to conserve water resources. The objective of this study was to determine the effect of irrigation timing and quantity, cover crop use and tillage on cotton production in an established conservation tillage system. Evaluated tillage systems included: 1) convention...
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#1Keyu Xiang (NWAFU: Northwest A&F University)
#2Yi Li (NWAFU: Northwest A&F University)H-Index: 5
Last.Hao Feng (CAS: Chinese Academy of Sciences)H-Index: 5
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Abstract Potential evapotranspiration (ETp) and reference crop evapotranspiration (ETo) differ in their developments, concepts, equations and application fields, however, many researchers have mixed the utilization of the two terms. Thus, it is necessary to clarify the terms to guide their proper usage. The aim of this study is to provide a comprehensive review of the concepts, developments, equations and applications of ETp and ETo. The review shows clearly that the concepts and developments of...
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#1Wenlong Liu (NCSU: North Carolina State University)
#2Mohamed A. Youssef (NCSU: North Carolina State University)H-Index: 18
Last.Bryan Maxwell (NCSU: North Carolina State University)H-Index: 2
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Abstract Intensive agricultural activities, especially in artificially drained agricultural landscapes, generate a considerable amount of nutrient export, which has been identified as a primary cause of water quality impairment. Several management practices have been developed and installed in agricultural watersheds to reduce nutrient export, e.g. nitrate-nitrogen (NO3-N). Although published research reported considerable water quality benefits of these practices, there exist many unanswered qu...
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#1Jéfferson de Oliveira Costa (USP: University of São Paulo)H-Index: 3
#2Jefferson Vieira José (UFMT: Universidade Federal de Mato Grosso)
Last.Alessana Franciele Schlichting (UFMT: Universidade Federal de Mato Grosso)H-Index: 2
view all 10 authors...
Abstract The evapotranspiration (ET) and crop coefficient (Kc) spatial variabilities are disregarded in traditional methods of evapotranspiration estimation based on lysimeters. With the development of remote sensing techniques, the estimative of ET on agricultural areas, in a specialized way, has become possible through the use of algorithms based on the surface energy balance such as the METRIC and its automated version, featured on the Google Earth Engine Evapotranspiration Flux (EEFlux) plat...
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Soil water
Economics
Hydrology
Agronomy
Irrigation