Gunnedah NSW trials

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Trial Contributor
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Year Trial site
Does pre-plant N fertiliser location affect soil mineral N and nitrous oxide emissions from irrigated cotton at Gunnedah?

To compare conventional practice with an alternative pre-plant N fertiliser placement in relation to the irrigated furrow, to investigate the potential impact on soil mineral N concentrations and consequent N2O emissions.
 

Department of Primary Industries NSW
DAWR DPI NSW
2016 Gunnedah NSW
Research organisaton
Nitrous oxide emissions from irrigated cotton fields – variations in time and space

To explore the assumptions used in our regular N2O emissions sampling. These campaigns examined:

  1. the variation in N2O emissions in relation to chamber closure time.
  2. the variation in N2O emissions over a full 24-hour period 
  3. the variation in N2O across a two metre cross section of hills and furrows within a cotton crop.
Department of Primary Industries NSW
DAWR DPI NSW
2015 Gunnedah NSW
Research organisaton
Optimum nitrogen fertiliser rates maintain yields and minimise nitrous oxide emissions

To test some of the commercial practices used in irrigated cotton growing. In the 2014–15 summer cropping season, three experiments were conducted at commercial farms located near Emerald (Qld), Moree (NSW), and Gunnedah (NSW).

Department of Primary Industries NSW
DAWR DPI NSW
2014 Gunnedah NSW
Research organisaton
Soil nitrous oxide emissions in irrigated cotton are reduced by nitrification inhibitors applied with pre-plant anhydrous ammonia

To assess the efficacy of two nitrification inhibitors, 3,4-dimethylpyrazole (DMP) and nitrapyrin, when applied directly into the anhydrous ammonia stream during pre-plant nitrogen (N) application for commercial irrigated cotton production.

Department of Primary Industries NSW
DAWR DPI NSW
2016 Gunnedah NSW
Research organisaton