Accelerated Deployment of an Agricultural Nutrient Management Tool

Understanding the soil fertility is an important management tool in assessing the nutrient requirement of the crops. Considering this, a study was done to determine depth-wise soil parameters distribution in the apple growing areas of Gharpajhog Rural Municipality, Mustang during October 2019. The total 68 sampling points were selected randomly in the different sites, and collection was done from three depths viz. 0-20cm, 20-40cm and 40-60cm by using soil sampling auger. The soil separates, pH, organic matter, total N, available P2O5 and K2O were determined following standard methods in National Soil Science Research Centre, Khumaltar. The results of the study revealed that the effect of depth was significant in the sand and silt proportion, while non- significant in clay proportion. The highest (40.17±1.57%) sand content was in 40-60cm depth, meanwhile highest (45.64±1.07%) silt content was in surface (0-20cm) depth. In addition to this, soil pH, OM, total N, available P2O5 and K2O were also affected by the depth. The highest (8.27) pH was determined in the lower (40-60cm) depth. On the other hand, highest OM (4.93±0.2%), total N (0.24±0.01%), available P2O5 (43.47±4.35 mg/kg) and available K2O (95.91±5.8 mg/kg) in surface (0.20 cm) depth. The surface depth possessed strong content of studied soil parameters might be due to in-situ incorporation of leaf litter, residue etc. as well as applied manure in the surface. Finally, we can also conclude that the adopted current nutrient management practice should be continued for apple production in the study area.

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NUTRIENT RECOVERY AS A SUSTAINABLE NUTRIENT MANAGEMENT TOOL

Proceedings of the Water Environment Federation ◽

10.2175/193864715819557849 ◽

2015 ◽

Vol 2015 (3) ◽

pp. 1-11 ◽

Cited By ~ 1

Author(s):

Wendell Khunjar ◽

Ronald Latimer ◽

Samuel Jeyanayagam ◽

Chirag Mehta ◽

Damien Batstone

Keyword(s):

Nutrient Management ◽

Management Tool ◽

Nutrient Recovery ◽

Sustainable Nutrient Management

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Shifting human diets and agricultural nutrient management

Journal of Soil and Water Conservation ◽

10.2489/jswc.65.3.63a ◽

2010 ◽

Vol 65 (3) ◽

pp. 63A-66A ◽

Cited By ~ 2

Author(s):

M. J. Castellano

Keyword(s):

Nutrient Management ◽

Agricultural Nutrient Management

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Economic analysis of agricultural nutrient management practices in the South Tobacco Creek Watershed in Manitoba, Canada

Journal of Soil and Water Conservation ◽

10.2489/jswc.68.4.257 ◽

2013 ◽

Vol 68 (4) ◽

pp. 257-269

Author(s):

M. Khakbazan ◽

C. Hamilton ◽

J. Elliott ◽

J. Yarotski

Keyword(s):

Economic Analysis ◽

Management Practices ◽

Nutrient Management ◽

The South ◽

Creek Watershed ◽

Agricultural Nutrient Management

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Use of Enhanced-Efficiency Fertilizers for Improved Agricultural Nutrient Management: Introduction to the Symposium

Crop Management ◽

10.1094/cm-2008-0730-01-ps ◽

2008 ◽

Cited By ~ 3

Author(s):

Peter P. Motavalli, et al.

Keyword(s):

Nutrient Management ◽

Agricultural Nutrient Management

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Promise and performance of agricultural nutrient management policy: Lessons from the Baltic Sea

AMBIO ◽

10.1007/s13280-021-01549-3 ◽

2021 ◽

Author(s):

Martin Hvarregaard Thorsøe ◽

Mikael Skou Andersen ◽

Mark V. Brady ◽

Morten Graversgaard ◽

Emils Kilis ◽

...

Keyword(s):

Baltic Sea ◽

Nutrient Management ◽

Domestic Politics ◽

Policy Instruments ◽

Management Policy ◽

Agricultural Pollution ◽

The Baltic Sea ◽

And Performance ◽

The Baltic ◽

Agricultural Nutrient Management

AbstractFollowing decades of international collaboration to restore the Baltic Sea, we provide an assessment of the domestic implementation of measures agreed to limit diffuse agricultural pollution and the patterns of policy instruments applied. Despite the Helsinki Convention being unusually specific in detailing what measures countries should introduce, we find many shortcomings. These are most pronounced in the larger countries (Poland, Germany and Russia), while smaller countries perform better, notably Sweden and Estonia. The patterns of policy instruments applied differ, influenced by domestic politics. The limited use of complementary policy instruments suggests that other priorities overrule full and effective implementation, with engagement mirroring the advantages that a restored Baltic Sea can bring to countries. Using the European Agricultural Fund for Rural Development to support farmers in managing nutrients, particularly advisory services and investments in modern manure management technologies, represents a significant opportunity for reducing agricultural pollution in most countries.

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In situ estimation of foliar nitrogen in wild blueberry using reflectance spectra

Canadian Journal of Plant Science ◽

10.4141/cjps2011-203 ◽

2012 ◽

Vol 92 (6) ◽

pp. 1155-1161 ◽

Cited By ~ 2

Author(s):

R. Maqbool ◽

D. C. Percival ◽

M. S. Adl ◽

Q. U. Zaman ◽

D. Buszard

Keyword(s):

Nutrient Management ◽

Reflectance Spectra ◽

Management Tool ◽

Biochemical Basis ◽

Foliar Nitrogen ◽

Foliar N ◽

Spectral Ranges ◽

Mean Square Errors ◽

Wild Blueberry

Maqbool, R., Percival, D. C., Adl, M. S., Zaman, Q. U. and Buszard, D. 2012. In situ estimation of foliar nitrogen in wild blueberry using reflectance spectra. Can. J. Plant Sci. 92: 1155–1161. Remote sensing techniques have the potential to serve as an important nutrient management tool in wild blueberry. The potential of visible (VIS), near infrared (NIR) and shortwave infrared (SWIR) spectroscopy was evaluated during 2006 (sprout/vegetative phase of production) to estimate foliar nitrogen (N). Canopy reflectance measurements were taken from two nutrient management experimental sites located in Nova Scotia (NS) and New Brunswick (NB). Partial least squares regression (PLSR) estimated foliar N, giving the coefficients of determination (R 2) values ranging from 0.69 to 0.85, and root mean square errors of cross validation (RMSECV) from 0.16% (±8.29% of mean) to 0.24% (±12.43% of mean) for different spectral ranges used in this study. The green peak region located in the VIS region best estimated foliar N. The tested spectral ranges differed in their predictive ability, but generally followed the biochemical basis. Variable importance in projection scores (VIP), regression vector coefficients and PLSR loading weights (LWs) plots highlight the importance of wavebands (∼550 nm, ∼610 nm, 1510 nm, ∼1690 nm, ∼1730 nm, ∼1980 nm and ∼2030 nm) for in situ foliar N estimations. Thus, it was concluded that reflectance spectra may be used to estimate and ultimately map foliar N in wild blueberry production. The results illustrated the ability of multivariate techniques, such as PLSR to explore hyperspectral data and estimate leaf tissue nutrient content.

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Rational budgeting approach as a nutrient management tool for mixed crop-swine farms in Korea

Asian-Australasian Journal of Animal Sciences ◽

10.5713/ajas.19.0640 ◽

2020 ◽

Vol 33 (9) ◽

pp. 1520-1532

Author(s):

Arif Reza ◽

Soomin Shim ◽

Seungsoo Kim ◽

Sungil Ahn ◽

Seunggun Won ◽

...

Keyword(s):

Removal Efficiency ◽

Nutrient Management ◽

Nutrient Loss ◽

Management Tool ◽

Soil System ◽

Swine Farms ◽

Manure Treatment ◽

Mixed Crop ◽

On Farm ◽

The Impact

Objective: Due to rapid economic return, mixed crop-swine farming systems in Korea have become more intensive. Intensive farming practices often cause nutrient surpluses and lead to environmental pollution. Nutrient budgets can be used to evaluate the environmental impact and as a regulatory policy instrument for nutrient management. This study was conducted to select a nutrient budgeting approach applicable to the mixed crop-swine farms in Korea and suggest an effective manure treatment method to reduce on-farm nutrient production.Methods: In this study, we compared current and ideal gross nutrient balance (GNB) approaches of Organisation for Economic Co-operation and Development and soil system budget (SSB) approach with reference to on-farm manure treatment processes. Data obtained from farm census and published literature were used to develop the farm nutrient budgets.Results: The average nitrogen (N) and phosphorus (P) surpluses were approximately 11 times and over 7 times respectively higher in the GNB approaches than the SSB. After solid-liquid separation of manure, during liquid composting a change in aeration method from intermittent to continuous reduced the N and P loading about 50% and 47%, respectively. Although changing in solid composting method from turning only to turning+aeration improved the N removal efficiency by 30.5%, not much improvement in P removal efficiency was observed.Conclusion: Although the GNB approaches depict the impact of nutrients produced in the mixed crop-swine farms on the overall agricultural environment, the SSB approach shows the partitioning among different nutrient loss pathways and storage of nutrients within the soil system; thus, can help design sustainable nutrient management plans for the mixed cropswine farms. The study also suggests that continuous aeration for liquid composting and turning+aeration for solid composting can reduce nutrient loading to the soil.

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