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Soil nutrient concentrations and farm gate nutrient balances for dairy farm management in Tasmania

Cotching, WE, Taylor, L, Findlay, S, Davies, P and Brown, R 2017 , 'Soil nutrient concentrations and farm gate nutrient balances for dairy farm management in Tasmania' , New Zealand Journal of Agricultural Research, vol. 60, no. 2 , pp. 216-221 , doi: 10.1080/00288233.2017.1295391.

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Abstract

Soil testing was undertaken on 1698 pasture paddocks on 109 dairy farms across Tasmania as part of the Fert$mart planning process. Forty-five per cent of paddocks had soil Olsen P concentrations above the concentration where any response could be expected from the application of additional P fertiliser. There was uneven distribution of nutrient concentrations across farms possibly relating to different soil types, previous fertiliser applications and grazing management practices. The range in Olsen P across paddocks was 5–134 mg/kg. Many paddocks (43%) had mean soil extractable K and KCl-S (39%) concentrations above that required for optimum plant growth. Only 3.7% of paddocks tested had nutrient levels in the optimum range for all of the four nutrient measures. Whole farm nutrient budgets found deficits to large surpluses for P, K and S. The Fert$mart process combines a farm nutrient budget with soil testing as tools for improved fertiliser management.

Item Type: Article
Authors/Creators:Cotching, WE and Taylor, L and Findlay, S and Davies, P and Brown, R
Keywords: soil, soil testing, pasture, nutrients, nutrient budget
Journal or Publication Title: New Zealand Journal of Agricultural Research
Publisher: Sir Publishing
ISSN: 0028-8233
DOI / ID Number: 10.1080/00288233.2017.1295391
Copyright Information:

Copyright 2017 The Royal Society of New Zealand

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