Nitrate leaching under maize cropping systems in Po Valley (Italy)

2012 ◽  
Vol 147 ◽  
pp. 57-65 ◽  
Author(s):  
Alessia Perego ◽  
Angelo Basile ◽  
Antonello Bonfante ◽  
Roberto De Mascellis ◽  
Fabio Terribile ◽  
...  
1995 ◽  
Vol 11 (1-4) ◽  
pp. 173-179 ◽  
Author(s):  
H. S. Østergaard ◽  
B. Stougaard ◽  
C. Jensen

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1571
Author(s):  
Nicolò Colombani ◽  
Micòl Mastrocicco ◽  
Fabio Vincenzi ◽  
Giuseppe Castaldelli

Nitrate is a major groundwater inorganic contaminant that is mainly due to fertilizer leaching. Compost amendment can increase soils’ organic substances and thus promote denitrification in intensively cultivated soils. In this study, two agricultural plots located in the Padana plain (Ferrara, Italy) were monitored and modeled for a period of 2.7 years. One plot was initially amended with 30 t/ha of compost, not tilled, and amended with standard fertilization practices, while the other one was run with standard fertilization and tillage practices. Monitoring was performed continuously via soil water probes (matric potential) and discontinuously via auger core profiles (major nitrogen species) before and after each cropping season. A HYDRUS-1D numerical model was calibrated and validated versus observed matric potential and nitrate, ammonium, and bromide (used as tracers). Model performance was judged satisfactory and the results provided insights on water and nitrogen balances for the two different agricultural practices tested here. While water balance and retention time in the vadose zone were similar in the two plots, nitrate leaching was less pronounced in the plot amended with compost due to a higher denitrification rate. This study provides clear evidence that compost addition and no-tillage (conservation agriculture) can diminish nitrate leaching to groundwater, with respect to standard agricultural practices.


2005 ◽  
Vol 273 (1-2) ◽  
pp. 355-373 ◽  
Author(s):  
A. J. Macdonald ◽  
P. R. Poulton ◽  
M. T. Howe ◽  
K. W. T. Goulding ◽  
D. S. Powlson

2013 ◽  
Vol 29 (4) ◽  
pp. 576-585 ◽  
Author(s):  
M. Carozzi ◽  
S. Bregaglio ◽  
B. Scaglia ◽  
E. Bernardoni ◽  
M. Acutis ◽  
...  

2020 ◽  
Vol 119 ◽  
pp. 126015 ◽  
Author(s):  
Delphine Moreau ◽  
Olivia Pointurier ◽  
Bernard Nicolardot ◽  
Jean Villerd ◽  
Nathalie Colbach

2020 ◽  
Vol 290 ◽  
pp. 106747 ◽  
Author(s):  
Laura J.T. Hess ◽  
Eve-Lyn S. Hinckley ◽  
G. Philip Robertson ◽  
Pamela A. Matson

1995 ◽  
Vol 75 (4) ◽  
pp. 497-505 ◽  
Author(s):  
R. C. Izaurralde ◽  
Y. Feng ◽  
J. A. Robertson ◽  
W. B. McGill ◽  
N. G. Juma ◽  
...  

The extent of nitrate leaching in cultivated soils of Alberta is unknown. We studied how long- and short-term agricultural practices influenced nitrate leaching in a cryoboreal subhumid soil-climate of north-central Alberta. The study used plots from three crop rotation-tillage studies at Breton on an Orthic Gray Luvisol, and from one at Ellerslie on an Orthic Black Chernozem. Soil samples were taken in the fall of 1993 from selected treatments as well as native forest sites in 0.3-m depth increments from 0 to 3.9 m and analyzed for NO3-N. No NO3− were found under native forest vegetation. NO3-N accumulated below 0.9-m depth of agricultural ecosystems cultivated for as long as 64 yr ranged from 0 to 67 kg N ha−1. At Breton, fallow-wheat rotation plots receiving fertilizer N and manure contained eight times more NO3-N below 0.9 m depth than non-fertilized plots. NO3-N levels in an 8-yr legume-based rotation and in continuous-barley plots were similar but greater than in continuous-forage plots. Eighty-seven percent of NO3− found under continuous barley occurred below the root zone compared with only 35% in the 8-yr rotation. At Ellerslie, NO3-N mass was related to fertilizer N and mineralization of soil organic matter. Increased efforts should be directed towards better synchronizing N release from or addition to soils with plant uptake. Evidence of greater nitrate leaching under zero tillage than under conventional warrants further confirmation. Key words: Nitrogen loss, fallow, Hordeum vulgare L., Triticum aestivum L., manure, legumes, synthetic fertilizer


2006 ◽  
Vol 169 (1) ◽  
pp. 47-51 ◽  
Author(s):  
Hong-mei Yu ◽  
Zi-zhong Li ◽  
Yuan-shi Gong ◽  
Ulrich Mack ◽  
Karl-Heinz Feger ◽  
...  

2019 ◽  
Vol 272 ◽  
pp. 38-51 ◽  
Author(s):  
Lucia Rakotovololona ◽  
Nicolas Beaudoin ◽  
Aïcha Ronceux ◽  
Eric Venet ◽  
Bruno Mary

Sign in / Sign up

Export Citation Format

Share Document