Managing micronutrient deficiencies in cropping systems of eastern Australia

This project will address these increasing concerns and speculation in a three pronged approach for all six micronutrients named in the tender (Mn, Zn, Cu, B, Mo, Fe) for all cropping regions in Australia except for those in WA. This project will liaise closely with a separate bid being prepared by Dr Ross Brennan of DAFWA to address issues in WA specifically, should that bid be successful. This project will produce clear guidelines for management of micronutrient disorders for the major crops in the southern and northern regions of GRDC based on existing knowledge which has been objectively tested for its relevance to modern cropping systems and modernised for current technologies and economic circumstances where necessary.


14 Oct 2016

Manganese Trial -Wheat Farm Beach 2014

Farm Beach, South Australia, 2014

A range of delivery strategies for Mn were evaluated at this site, and these were assessed as responses in establishment, grain yield, screenings and grain protein concentration. The nutrient concentrations in the YEBs were assessed as well.

Mean site yield was 1.6 t/ha, YEB Mn concentrations are within the range of 19 to 27, which is above the critical values of 10-12 mg/kg given in Reuter and Robinson.

There were no statistically significant differences due to the treatments.

Site selected for Mn deficiency, previous history and soil type known to have Mn deficiency.

Table of treatments

Trial site summary: 62 plots x 20m treated length (1.56 m wide plots). 19 treatments, 12 treatments x 4 reps and 5 x 2 reps (see Table 7).
Growing season rain fall was 260mm, the long term average for this area is 334mm (Long term average from Wanilla BOM station June – Oct).
Note: Treatment 8 was originally a double sulphate foliar spray. With the season and lack of response in the trial site the second foliar spray was not applied.

Table 0-10 cm soil tests.