John Jolly (farmer manager for landholder) Paul Leoni (Shire of Kent)
Year(s)
2015
Contributor
Shire of Kent
Trial location(s)
Nyabing, WA
Aims
To reduce soil acidity at depth (i.e. 10-30cm) from banded prilled carbonate.
To increase crop uptake of fertiliser from banded lime treatments, especially prilled humate and VAM seed dressing.
To reduce sub-soil lime input costs by using prilled instead of liquid lime products.
Key messages
The trial was confounded by a severe shortage of plant available water (e.g. very low rainfall) and severe sub-soil acidity that resulted in toxic levels of plant aluminum concentrations that impacted negatively on crop productivity.
The treatments (excluding prilled humate, which produced negative crop impacts) should be repeated (with VAM) at a site with more even sub-soil conditions. CALCIPRILL and VAM seed dressing showed particular potential for quality grain production and MAGPRILL showed particular potential as an effect agent for increasing soil pH.
Lead research organisation
Shire of Kent
Host research organisation
N/A
Trial funding source
GRDC SOK00001
Related program
Regional Cropping Solutions Network
Acknowledgments
William Hurst (Landholder); John Jolly (Farm Manager) for site and collection of rainfall data: DAFWA (Katanning Research Station) for seeding/harvest (oven use for drying samples); Precision Ag. Aus. for EM/Gamma; Paul Leoni (Shire of Kent) for plant counts, photos, soil/tissue sampling and field visits; CSBP; UWA for analysis and reporting (Craig Russell; Richard Bowles, UWA); Jeremy Lemon, Chris Gazey (DAFWA) and Julianne Hill (GRDC) for technical support.
█
K-Till Extra @ 95kg/ha + Nanarup limesand @ 1.5T/ha
10.6
17
0.61
3.4
4
█
K-Till Extra @ 95kg/ha + Nanarup limesand @ 1.5T/ha + humate prill @ 20kg/ha + VAM @ 1.05L/70kg/ha
10.6
17
0.49
2.7
5
█
K-Till Extra @ 95kg/ha + humate prill @ 20kg/ha
10.4
18
0.42
2.1
6
█
K-Till Extra @ 95kg/ha + humate prill @ 20kg/ha + VAM @ 1.05L/70kg/ha
10.8
17
0.64
3.2
7
█
K-Till Extra @ 95kg/ha + Calciprill @ 75kg/ha
11
16
0.69
3.7
8
█
K-Till Extra @ 95kg/ha + humate prill @ 20kg/ha + VAM @ 1.05L/70kg/ha + Calciprill @ 75kg/ha
10.3
17
0.52
2.6
9
█
K-Till Extra @ 95kg/ha + Magprill @ 75kg/ha
10.6
16
0.64
3.5
10
█
K-Till Extra @ 95kg/ha + humate prill @ 20kg/ha + VAM @ 1.05L/70kg/ha + Magprill @ 75kg/ha
10.4
17
0.55
2.7
Grain yield t/ha
Dry matter t/ha
Protein %
Screenings %
Climate
Nyabing WA 2015
Observed climate information
Rainfall trial gsr (mm)
155mm
Derived climate information
Nyabing WA
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.
