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Organic Carbon Stock in Kiwifruit Soils of New Zealand

M. Hasinur Rahman*, Allister W. Holmes, Alan G. McCurran & Steven J. Saunders
PlusGroup Ltd., Newnham Park, Te Puna, Tauranga, New Zealand
*Corresponding author’s e-mail: technical@plusgroup.co.nz

Background
1. Soil is a major natural component which sequesters huge amounts of carbon.

2. The impact of kiwifruit production on greenhouse gas emissions was estimated in New Zealand with a lifecycle assessment based carbon footprint analysis following the PAS2050 framework.

3. However, this framework does not consider the kiwifruit soil as a source or sink of atmospheric CO2.

Objectives
1. To determine the effect of land management on organic carbon stock in an Allophanic soil.

2. To estimate the effect of climate on the organic carbon pool of different management systems.

3. To compare the spatial and vertical variability of carbon in kiwifruit soils.

Materials and Methods
In this study three management practices (organic, biological and conventional) were selected from three agro-ecological zones (Katikati: 37o36’S 175o56’E; Tauranga: 37o43’S 176o06’E and Te Puke: 37o47’S 176o23’E), located in the Bay of Plenty, North Island of New Zealand. The Katikati sites are approximately 19 km north-west of the Tauranga sites, with the Te Puke sites 28 km to the east of the Tauranga sites... Download full article.

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