Reduction of Nitrous Oxide Emissions from Urine Patches from Grazed Dairy Pastures in New Zealand: A Preliminary Assessment of ORUN ® as an Alternative to the Use of Nitrification Inhibitor Dicyandiamide (DCD)

Iduh Jonathan Joseph Otene (), Mike J. Hedley and Peter Bishop
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Iduh Jonathan Joseph Otene: Department of Soil & Environmental Management, Kogi State University, Anyigba P.M.B. 1008, Nigeria
Mike J. Hedley: Soil and Earth Sciences Group, School of Agriculture and Environment, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand
Peter Bishop: Soil and Earth Sciences Group, School of Agriculture and Environment, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand

Sustainability, 2024, vol. 16, issue 7, 1-18

Abstract: Agriculture plays a significant role in economic development and livelihood and is a key contributor to food security and nutrition. However, global concerns regarding the sustainability of the agricultural sector (mainly environmental damage) is linked to agricultural activities such as greenhouse gas (GHG) emissions, water pollution, and loss of biodiversity. The aim of this study was to assess the effectiveness of ORUN ® (a formulated agricultural chemical mixture) to reduce N 2 O emissions from urine patches and to improve pasture yield, pasture N uptake, and soil mineral N concentrations. The field trials were conducted during the spring of 2015 on dairy urine patches at Massey University, New Zealand. Treatments consisted of control nil urine, control nil urine + ProGibb ® , urine only, urine + ProGibb ® , urine + ORUN ® , and urine + ORUN PLUS ® replicated four times in a randomized complete block design. At 31 days after treatment (DAT), analysis of soil samples in 0–5 cm soil profiles showed that urine + ProGibb ® significantly ( p = 0.0041) increased the soil nitrate concentration (121.40 kgN/ha) compared with 48.15 kgN/ha from urine only. The urine + ProGib ® treatment produced significantly lower herbage N recovery (35% of applied N) compared with the urine only. Throughout the trial period, the urine patches treated with ProGibb ® and ORUN ® produced significantly higher N 2 O fluxes compared with urine only and urine + ORUN PLUS ® , as well as higher surface soil nitrate and mineral N concentrations.

Keywords: climate change; environmental sustainability; pastoral agriculture; greenhouse gas emission (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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