Nitrogen and phosphorus runoff losses were influenced by chemical fertilization but not by pesticide application in a double rice-cropping system in the subtropical hilly region of China

2020 ◽  
Vol 715 ◽  
pp. 136852 ◽  
Author(s):  
Ji Liu ◽  
Xiuqin Ouyang ◽  
Jianlin Shen ◽  
Yong Li ◽  
Wanru Sun ◽  
...  
Keyword(s):  
Cropping System ◽  
Pesticide Application ◽  
Nitrogen And Phosphorus ◽  
Hilly Region ◽  
Chemical Fertilization ◽  
Runoff Losses ◽  
Double Rice ◽  
Phosphorus Runoff

Nitrogen and Phosphorus Runoff Losses from Orchard Soils in South China as Affected by Fertilization Depths and Rates

Pedosphere ◽  
2008 ◽  
Vol 18 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Shu-Cai ZENG ◽  
Zhi-Yao SU ◽  
Bei-Guang CHEN ◽  
Qi-Tang WU ◽  
Ying OUYANG
Keyword(s):  
South China ◽  
Nitrogen And Phosphorus ◽  
Runoff Losses ◽  
Phosphorus Runoff ◽  
Orchard Soils

scholarly journals Impact of conservation tillage on nitrogen and phosphorus runoff losses in a potato crop system in Fuquene watershed, Colombia

2018 ◽  
Vol 209 ◽  
pp. 62-72 ◽  
Author(s):  
Natalia Uribe ◽  
Gerald Corzo ◽  
Marcela Quintero ◽  
Ann van Griensven ◽  
Dimitri Solomatine
Keyword(s):  
Conservation Tillage ◽  
Potato Crop ◽  
Nitrogen And Phosphorus ◽  
Runoff Losses ◽  
Phosphorus Runoff ◽  
Crop System

Nitrate Leaching to a Shallow Mid-Atlantic Coastal Plain Aquifer as Influenced by Conventional No-Till and Low-Input Sustainable Grain Production Systems

1993 ◽  
Vol 28 (3-5) ◽  
pp. 691-700 ◽  
Author(s):  
J. P. Craig ◽  
R. R. Weil
Keyword(s):  
Management Practices ◽  
Production Systems ◽  
Cropping Systems ◽  
Cropping System ◽  
Atlantic Coastal Plain ◽  
Grain Production ◽  
Nitrogen And Phosphorus ◽  
Mineral N ◽  
Low Input ◽  
No Till

In December, 1987, the states in the Chesapeake Bay region, along with the federal government, signed an agreement which called for a 40% reduction in nitrogen and phosphorus loadings to the Bay by the year 2000. To accomplish this goal, major reductions in nutrient loadings associated with agricultural management practices were deemed necessary. The objective of this study was to determine if reducing fertilizer inputs to the NT system would result in a reduction in nitrogen contamination of groundwater. In this study, groundwater, soil, and percolate samples were collected from two cropping systems. The first system was a conventional no-till (NT) grain production system with a two-year rotation of corn/winter wheat/double crop soybean. The second system, denoted low-input sustainable agriculture (LISA), produced the same crops using a winter legume and relay-cropped soybeans into standing wheat to reduce nitrogen and herbicide inputs. Nitrate-nitrogen concentrations in groundwater were significantly lower under the LISA system. Over 80% of the NT groundwater samples had NO3-N concentrations greater than 10 mgl-1, compared to only 4% for the LISA cropping system. Significantly lower soil mineral N to a depth of 180 cm was also observed. The NT soil had nearly twice as much mineral N present in the 90-180 cm portion than the LISA cropping system.

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