Nitrogen Use Efficiency Trial – influence of rate (Peechelba East)

2020

Research organisaton
Funding source

Trial details

Researcher(s) Damian Jones
Ben Morris
Nick Poole
Tom Price
Year(s) 2020
Contributor Field Applied Research (FAR) Australia
Trial location(s) Peechelba East, VIC
Nitrogen Use Efficiency Trial – influence of rate (Peechelba East) locations
Aims

To evaluate nitrogen use efficiency in grain maize under different rates of applied N fertiliser applied as pre drill urea (46% N) prior to a standard fertigation (230N) with an overhead lateral.

Key messages
  • Header grain yields averaged 17t/ha with no yield benefit observed from applying pre-drill urea in the trial when N was applied post sowing as fertigation (230kg N applied).
  • In a trial with an overall dose of post sowing N of 230 kg N/ha applied via fertigation there was no value to the earlier pre-drill N applications of between 0 – 315kg N/ha.
  • No significant differences were recorded in dry matter (DM) accumulation at V5 or NDVI at V7.
  • The N offtake at harvest revealed an average N content of 420kg N/ha with a range of approximately 395-460kg N/ha in the crop.
  • The N uptake at harvest indicated soil mineralisation provided up to 79kg N/ha to grow the crop with lower N efficiency recorded from applied fertiliser at higher overall N rates.
  • There were no significant differences in test weight (mean 80.7kg/hL)
  • Dry matter at harvest showed no differences with an average reading of 35.3t/ha and harvest index mean of 46.9%.
  • Exactly two thirds of the N removed in the crop was present in the grain with an average of 280kg N/ha in the grain and 140kg N/ha in the stover.
Lead research organisation Field Applied Research (FAR) Australia
Host research organisation Field Applied Research (FAR) Australia
Trial funding source GRDC FAR1906-003RTX
Related program N/A
Acknowledgments N/A
Other trial partners Irrigated Cropping Council
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Maize
Treatment type(s)
  • Fertiliser: Rate
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Peechelba East 2020

Sow date 4 November 2020
Harvest date 6 May 2021
Plot size Not specified
Plot replication Not specified
Fertiliser

Please find treatment information in Table 1 on the first page of the attached trial report.

Other trial notes

Previous crop: Grain Maize
Variety: Pioneer Hybrid 1756
Irrigation Type: Overhead pivot

Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Peechelba East, VIC Loam over clay
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Peechelba East, VIC Chromosol
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

Loading

Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Peechelba East VIC

Loading
Loading
Loading

Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.

Trial report and links

2020 trial report



Trial last modified: 17-03-2022 10:00am AEST