| Researcher(s) |
Liz Mann |
|---|---|
| Contact email | charlie.aves@irrigatedcroppingcouncil.com.au |
| Contact phone | 0416400979 |
| Year(s) | 2020 |
| Contributor | Irrigated Cropping Council |
| Trial location(s) |
Boort, VIC
|
To supply all the maize crops nutritional needs as identified through tissue testing at three growth stages thought the season and see what the maximum yield potential is. Compare this with farmer pratice to understand the economics of pushing yield.
Additional N was applied to the entire area during the season, until the 3rd week of January. The nitrogen level still continued to fall below the desirable range from Reuter & Robinson (1997) even with these applications, with a further decrease observed past the end of January. This indicates that additional applications of late season N may have been required.
Additional P and Zn was applied to the unlimited strip in both late November and December. Given this the P level still continued to appear marginal into January.
As the K levels in the plant appeared to be dropping in mid January additional K was applied to the crop. Following this application the drop in K continued in the plant tissue, although it could be assumed that without this late K application the drop in K may have been to a greater extent.
Despite the tissue tests indicating nutrient requirements, no increase in yield was obtained bny applying additional applied nutrients
Irrigation system: Drip
Variety grown: P1756
Tissue testing conducted: at less then 30cm / over 30cm (but not tassling) / 50% silking
| Lead research organisation |
Irrigated Cropping Council |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC ICF1906-002RTX |
| Related program | N/A |
| Acknowledgments |
Ian & Mary Hamono for hosting the demonstration Scott Palmer from SLTec for monitoring the demonstration |
| Other trial partners | Maize Association of Australia |
| Crop type | Cereal (Grain): Maize |
|---|---|
| Treatment type(s) |
|
| Trial type | Demonstration |
| Trial design | Unreplicated |
| Sow date | 7 November 2019 |
|---|---|
| Harvest date | 17 April 2020 17-25 April 2020 |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
1. Unlimited Strip The application and timing of the nutrients applied during the season was determined based on the tissue analysis conducted at the three key stages. The total program consisted of the following:
Foliar:
|
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.
