Colin McMaster
@Master4Colin
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R&D Agronomist with NSW DPI, conducting dry land cropping research within central NSW.
Joined December 2015
**Parkes canola field walk - 9 October** Hope to see you next week to inspect the Canola NVT trial site with @HertelKathi and to discuss the latest @theGRDC canola establishment research results. @NSW_AGRONOMY @CSIRO
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Great day at Tottenham yesterday, and thanks @GRDCNorth for the opportunity to present. For anybody interested, there’s also a new @theGRDC funded App developed by @CSIRO called ‘Summer weed tool’…worth checking out this summer.
Weeds are a red card for fallow management - @Master4Colin looks at the cost of uncontrolled weeds to system profit – a nitrogen & water story. #GRDCUpdates #Tottenham Paper: https://t.co/lYffQuMXu3
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The team from GOA invite you along to the 2025 Central West @grdc NGN forums. 🤔Have your say on the issues that keep you awake at night that might help guide GRDC investments in YOUR area with YOUR levy $$$$. 🧐Hear the latest research from YOUR backyard with farmer-ready
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Big thanks to the growers and advisors for supporting yesterdays @theGRDC canola establishment field walk at Canowindra. Great discussion and thanks to @AgroJAK and @DaveFinlayTrang for your contribution👍. Hope it helped
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Be great to see you @theGRDC canola establishment field walk at Canowindra on Friday 13 June. Strong focus on the critical soil moisture requirements for est % & the various implications of stubble, seed depth, soil strength & seedbed moist dry-down. @CSIRO @NSW_AGRONOMY
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Great morning by the Grassroots Agronomy team and a massive thanks for the opportunity to present @theGRDC canola establishment results 👍. @CSIRO @NSW_AGRONOMY
Top session in Marrar for our 2025 grassrootsag preseason. Lee Hudek @newedgemicrobes with a preso + live demo on inoc. pulses. @Master4Colin best bet canola estab. & Claudia Mitchell (thecapacityco) on effective farm teams. Big thanks to @JessicaZieltjes for organising.
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Using shelters & irrigation to adjust seedbed moisture & to ensure dry conditions post sowing. Questions are: what’s the critical moist % to establish canola, & can seed be placed deeper if surface too dry? Really looking foward to these @theGRDC results👍@CSIRO @NSW_AGRONOMY
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Cracking’ morning for a BBQ brekkie at Greenethorpe, see you there @Master4Colin @AgroJAK @grassrootsag @wrightim1 @GRDCNorth @NSW_AGRONOMY
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A very handy resource thanks Charleton @GRDCNorth
Tips for identifying frost damage - @GRDCNorth Damage is usually most evident 7−10 days after a suspected frost event. Here's a cheat sheet to help ID symptoms. 🌾Cereal ID - https://t.co/fBcRzy4UY6 🌼 Canola & Pulse ID -
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Is MAP fertiliser toxicity worse on wet or dry soils from a canola establishment perspective? Come along to tomorrow’s field day at Condobolin as we discuss the latest @theGRDC research into all things canola establishment. How to see you there. @NSWDPI_AGRONOMY @CSIRO
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📅SAVE THE DATE📅 The central west @theGRDC NGN Forums are coming to a town near you SOON -Condobolin: 27th Aug (am) -Tottenham: 27th Aug (pm) -Coonamble: 28th Aug (am) -Dubbo: 29th Aug (am) -Manildra: 29th Aug (pm) For more info: https://t.co/rDkQa2KLvp
@GRDCNorth
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Massive thanks to all the growers and advisors for supporting yesterday’s @theGRDC canola establishment field walk. Great discussion & particular thanks to speakers @merindie1, @bennyob , @stufarm , @RobGindurra and Oliver Wythes. Great team effort @NSWDPI_AGRONOMY @CSIRO
Great disc at Canola Establishment F-Day at Canowindra this morning - plenty of chat about disc vs tyne, estab pests like slugs, millipedes, slatters etc, fertiliser affect on canola seed, press wheels and closing wheel pressure - great work by Col McMaster NSW DPI $ by the GRDC
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Come along to an @theGRDC canola establishment field walk on Wednesday 26 June at Canowindra. Should be some good discussion regarding all things canola establishment (incl agronomic/mechanical & pest ). Hope to see you there. @NSWDPI_AGRONOMY @GrainOrana @CSIRO @merindie1
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We are hosting a canola establishment field walk Wednesday 29 May, 9.30 am at Ganmain. The focus will be on managing variable soils, especially sodic soils. Great opportunity to hear experts in their field and see research in a challenging environment. https://t.co/0tqSiIrxKp
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Disc seeders - ensure adequate seed slot closure in wet conditions. These @theGRDC results illustrate reduced canola est% presumably due to poor seed slot closure. Sometimes might be best to leave it another day to dry out. @NSWDPI_AGRONOMY @CSIRO
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What’s the critical soil moisture content to establish canola? Been using evaporation covers, irrigation and rain-out shelters to evaluate moisture and temperature effects on est%. Great @theGRDC project lead by @AndrewF00370433 . Stay tuned for results. @CSIRO @NSWDPI_AGRONOMY
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How fast are you sowing canola? Previous @theGRDC paddock survey identified that establishment could increase by 16% by reducing sowing speed. Just another factor to consider/weigh up @GRDCNorth @NSWDPI_AGRONOMY
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Results highlighting the benefit of sowing large diameter seed as canola seed depth increases. Key points * biggest gains in est% came via removing <1.6mm seed * large seed = larger cotyledons = quicker biomass production @GRDCNorth @NSWDPI_AGRONOMY @GrainOrana @agrobaz
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Using a single disc seeder? On average, there was a 17%, 28% & 37% reduction in canola establishment as MAP increased from 50, 100 and 150kg/ha compared to Nil MAP. Be aware of your SBU%. @GRDCNorth @NSWDPI_AGRONOMY
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Ever wondered if MAP fertiliser toxicity was worse with smaller canola seed? These @theGRDC results suggest no difference, however the improved establishment from larger seed helped compensate for some of the losses. @GRDCNorth @NSWDPI_AGRONOMY @GrainOrana @agrobaz
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