Site 1, Lake Cargelligo, NSW
Lake Cowal, NSW
Rankins Springs, NSW
Site 1, Tottenham, NSW
Site 1, Wirrinya, NSW
To identify any possible impacts on crop growth in controlled traffic systems where the header residue maybe inconsistently spread back across the tram track width over a number of seasons.
Although not statistically validated a trend of either higher or lower NDVI’s in the centre of the tram tracks was observed on 7 of the 14 farms investigated.
The trend to wider header fronts makes the practicalities of redistributing residue evenly back across the width of the header all the more difficult and may accelerate any rate of change in crop performance.
In the short term CTF producers should target even redistribution of crop residue across header
Further work is needed and the author would welcome collaboration from others in helping to design a future experiment and statistical analysis.
The author acknowledges the support of cooperating farmers in allowing access to both their crops and paddock records. It is hoped that in the future with further work a more definitive results can be found.
GRDC project CWF00018 – Maintaining profitable farming systems with retained stubble in Central West, NSW
GRDC project ACT00004 – Application of CTF in the low rainfall zone.
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.
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