Our first 2017 Spring Field Day at Mumbil Creek was held on 12 September 2017. Nine attended with three apologies – between them those twelve farm an area of approximately 60,800 ha of land north-west of Condobolin.
To put that in perspective, the Sydney Metro area is 2672 ha; Kuringai Chase National park is 14,500 ha and covers an area of 95 square km.
It was disappointing to see widespread frost damage to canola, though some may recover slightly if it rains. The trials were varied depending on treatments of P and N or stubble treatments, with a couple of Condo wheat plots (pictured) still looking promising if rains occur. Widespread discussion included the danger of burning high stubble loads (for example after 2016) if the next season is then dry – those paddocks were the first to fail in 2017 and will have little stubble cover for 2018. So, although stubble loads over 3 t/ha may prove detrimental to the following crops yield potential, a long term strategy must be considered.
It was also interesting to find good soil moisture under a clump of heavy stubble left from 2016 even though conditions have remained dry for some time. It shows the mulching effect stubble can play. Thanks to the talented speakers who attended: Adrian Roles (JMAJ), Melissa Trengove (NuFarm), Jess Pagan (Rabobank), Steven Collins (GrainCorp) and Lexi Cesnik (Moses & Son).