Nutrient Management Plans: How closely do farmers follow them?

Crops & Soils ◽  
2014 ◽  
Vol 47 (5) ◽  
pp. 4-11
Author(s):  
Tanner Ehmke
Keyword(s):  
Nutrient Management ◽  
Management Plans

A Partial Budget Analysis for Phosphorus-Based Nutrient Management Plans for Connecticut Dairy Farms

2010 ◽  
Vol 102 (1) ◽  
pp. 231-240 ◽  
Author(s):  
Haiying Tao ◽  
Thomas F. Morris ◽  
Boris Bravo-Ureta ◽  
Richard Meinert ◽  
Kelly Zanger ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Dairy Farms ◽  
Budget Analysis ◽  
Partial Budget ◽  
Management Plans

scholarly journals Evaluation of Nutrient Management Plans Using an Integrated Modeling Approach

2007 ◽  
Vol 23 (6) ◽  
pp. 747-755 ◽  
Author(s):  
M. A. Thomas ◽  
B. A. Engel ◽  
M. Arabi ◽  
T. Zhai ◽  
R. Farnsworth ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Integrated Modeling ◽  
Modeling Approach ◽  
Management Plans

scholarly journals Effectiveness of Nutrient Management on Water Quality Improvement: A Synthesis on Nitrate-Nitrogen Loss from Subsurface Drainage

2021 ◽  
Vol 64 (2) ◽  
pp. 675-689
Author(s):  
Wenlong Liu ◽  
Yongping Yuan ◽  
Lydia Koropeckyj-Cox
Keyword(s):  
Water Quality ◽  
Nutrient Management ◽  
Fertilizer Application ◽  
Organic Fertilizers ◽  
Corn Yield ◽  
Fertilizer Rate ◽  
N Losses ◽  
Nitrate N ◽  
Management Plans ◽  
Fertilizer Rates

HighlightsFertilizer rate was found to be the most important factor controlling flow-weighted nitrate-N concentrations.Organic fertilizer may significantly increase nitrate-N losses, but N content of manures can be variable.We did not find significant differences in nitrate-N export among fertilizer application methods or timing.Split fertilization reduced nitrate-N export at lower fertilizer rates (<167 kg N ha-1) but not at higher rates.Fertilizer N recommendations need re-evaluation to consider both environmental and economic effects.Abstract. Nutrient management, as described in NRCS Code 590, has been intensively investigated, with research largely focused on crop yields and water quality. Yet, due to complex processes and mechanisms in nutrient cycling (especially the nitrogen (N) cycle), there are many challenges in evaluating the effectiveness of nutrient management practices across site conditions. We therefore synthesized data from peer-reviewed publications on subsurface-drained agricultural fields in the Midwest U.S. with corn yield and drainage nitrate-N (NO3-N) export data published from 1980 to 2019. Through literature screening and data extraction from 43 publications, we obtained 577 site-years of data with detailed information on fertilization, corn yields, precipitation, drainage volume, and drainage NO3-N load/concentration or both. In addition, we estimated flow-weighted NO3-N concentrations ([NO3-N]) in drainage for those site-years where only load and volume were reported. Furthermore, we conducted a cost analysis using synthesized and surveyed corn yield data to evaluate the cost-effectiveness of different nutrient management plans. Results from the synthesis showed that N fertilizer rate was strongly positively correlated with corn yields, NO3-N loads, and flow-weighted [NO3-N]. Reducing N fertilizer rates can effectively mitigate NO3-N losses from agricultural fields; however, our cost analysis showed negative economic returns for continuous corn production at lower N rates. In addition, organic fertilizers significantly boosted corn yields and NO3-N losses compared to inorganic fertilizers at comparable rates; however, accurate quantification of plant-available N in organic fertilizers is necessary to guide appropriate nutrient management plans because the nutrient content may be highly variable. In terms of fertilizer application methods, we did not find significant differences in NO3-N export in drainage discharge. Lastly, impact of fertilization timing on NO3-N export varied depending on other factors such as fertilizer rate, source, and weather. According to these results, we suggest that further efforts are still required to produce effective local nutrient management plans. Furthermore, government agencies such as USDA-NRCS need to work with other agencies such as USEPA to address the potential economic losses due to implementation of lower fertilizer rates for water quality improvement. Keywords: Conservation practice, Corn yields, Cost-effectiveness, NO3-N loss, Nutrient management, Subsurface drainage, Midwest U.S.

Nutrient Applications Reported by Farmers Compared with Performance-Based Nutrient Management Plans

2012 ◽  
Vol 104 (2) ◽  
pp. 437-447 ◽  
Author(s):  
Haiying Tao ◽  
Thomas F. Morris ◽  
Boris Bravo-Ureta ◽  
Richard Meinert ◽  
Joseph Neafsey
Keyword(s):  
Nutrient Management ◽  
Management Plans

Nitrate Reduction Through Controlled Drainage & Nutrient Management Plans

2005 ◽  
Author(s):  
Heather L. Smeltz ◽  
Robert O. Evans ◽  
Deanna L. Osmond ◽  
Gregory D. Jennings
Keyword(s):  
Nitrate Reduction ◽  
Nutrient Management ◽  
Controlled Drainage ◽  
Management Plans

Recommendations for nutrient management plans in a semi-arid environment

2010 ◽  
Vol 137 (3-4) ◽  
pp. 317-328 ◽  
Author(s):  
Eran Segal ◽  
Peter Shouse ◽  
James A. Poss ◽  
David M. Crohn ◽  
Scott A. Bradford
Keyword(s):  
Nutrient Management ◽  
Arid Environment ◽  
Management Plans ◽  
Semi Arid

scholarly journals Fertiliser characteristics of stored spent mushroom substrate as a sustainable source of nutrients and organic matter for tillage, grassland and agricultural soils

2021 ◽  
Author(s):  
B. Velusami ◽  
S.N. Jordan ◽  
T. Curran ◽  
H. Grogan
Keyword(s):  
Nutrient Management ◽  
Agricultural Soils ◽  
Acid Soils ◽  
Nutrient Content ◽  
Storage Conditions ◽  
Good Effect ◽  
Agricultural Practice ◽  
Spent Mushroom Substrate ◽  
Good Agricultural Practice ◽  
Management Plans

Spent mushroom substrate (SMS) is an organic manure that can be used with advantage in agriculture. Under European Union (EU) (Good Agricultural Practice for Protection of Waters) Regulations, SMS cannot be applied to land over the winter months and must be stored on concrete surfaces, either covered or uncovered, to prevent nutrient-rich runoff seeping into groundwater. Spent mushroom substrate at four storage facilities, two covered and two uncovered, was analysed for physical and chemical characteristics after storage for up to 12 mo. Significant differences (P<0.05) were identified for all parameters across the four sites, except for pH, but there were no consistent differences that correlated with uncovered or covered storage conditions. The content of nitrogen (N) and manganese (Mn) was significantly lower in uncovered SMS, while the content of iron (Fe) and copper (Cu) was significantly higher. The chemical nitrogen-phospous-potassium (NPK) fertiliser equivalent value of SMS, when applied at a rate of 10 t/ha, was between €105 and €191 per hectare. Nitrogen-phospous-potassium concentrations per kg wet weight were all higher in SMS that was stored under cover, meaning higher chemical fertiliser savings are possible. The high pH of stored SMS (7.8–8.1) means it could be used with good effect on acid soils instead of ground limestone. The low bulk density of SMS (0.545–0.593 g/cm3) makes it an ideal amendment to soils to improve soil structure and quality. There is some variability in the nutrient content of SMS from different sources, so it is advisable to get the material analysed when including in nutrient management plans.

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