Now showing items 1-10 of 137
The spatial distribution and area coverage of urine depositions in grazed pastures in New Zealand
(Lincoln University., 2006)
A study using GPS and GIS technology to make accurate measurements of the spatial distribution and area coverage of urine depositions in grazed dairy and sheep and beef pastures in New Zealand.
Use of geostatistics in designing sampling strategies for soil survey
(Soil Science Society of America, 1989)
Semivariograms are used to quantitatively assess spatial variability of depth to mottles, depth to gravels, and thickness of loamy sand and/or coarser-textured layers, which are definitive criteria for classification of ...
The efficacy of good practice to prevent long-term leaching losses of phosphorus from an irrigated dairy farm
Phosphorus (P) can be leached from intensive land uses, including grazed dairy farming. There is some evidence to suggest that P-leaching can enrich groundwater, especially where fertiliser or farm dairy effluent P (FDE) ...
Nutrient management on the Lincoln University dairy farm: "nutrient budgeting for efficient production"
(South Island Dairy Event (SIDE)., 2007-06)
Nutrient management plays an important role in any dairy farming system. Soil fertility status and fertiliser inputs are key drivers of pasture and animal production, whilst fertiliser represents a significant annual cost ...
The effectiveness of nitrification inhibitor technology to improve the sustainability of agriculture
(NZ Institute of Primary Industry Management (NZIPIM), 2009-12)
As reported widely in the general media and also in recent editions of Primary Industry Management, there is increasing recognition of the need to improve the sustainability of New Zealand agricultural systems. Fonterra’s ...
Increasing phosphate rock availability using a lupin green manure crop
(Lincoln University, 2004)
Legumes have been shown to increase the dissolution and utilisation of phosphate rock (PR) phosphorus (P) compared with non-legumes because of their acidifying effect on the rhizosphere. A promising agronomic approach for ...
The spatial coverage of dairy cattle urine patches in an intensively grazed pasture system
(Cambridge University Press, 2010-12-23)
Accurate field data on the paddock area affected by cow urine depositions are critical to the estimation and modelling of nitrogen (N) losses and N management in grazed pasture systems. A new technique using survey-grade ...
Using nitrogen : what is best practice?
(South Island Dairy Event (SIDE), 2005-06)
Feed shortages occur in spring because the rate of pasture growth is below the cow demand. Spring pasture growth rate is slow in the South Island because the soil temperature is low and the rate of nitrogen (N) supply from ...
Clean and green with 'eco-n'
(South Island Dairy Event (SIDE)., 2004-06)
Lincoln University and Ravensdown Fertiliser Co-operative have developed a new soil treatment technology, called 'eco-n' technology, that can reduce the environmental impacts of dairy farming and at the same time help ...
Urine patch area coverage of an intensively stocked dairy pasture
(International Union of Soil Science, 2010-08)
The urine patch of the grazing cow has been identified as the key source of N loss from pasture-based dairy systems. Although critical to N modelling, quantitative data on the annual area coverage of urine patches in pastures ...