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Catalogue: GRDC Media
Variable-rate application of some farm inputs offers northern region grain growers cost benefits and improved yields but simple on-farm trials are the key to local success... A new Grains Research and Development Corporation (GRDC) fact sheet outlines how, when and where to vary application rates of inputs such as seed, fertiliser, soil ameliorants such as lime or gypsum, desiccants and growth regulators... When considering variable-rate application, question whether variation exists...
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Catalogue: GRDC Media
With heightened interest among growers in using variable-rate application (VRA) to reduce input costs, it is recommended they first conduct on-farm trials to generate paddock data... "While data collected from farmer trials using yield mapping software will never be as accurate as small plot trials conducted by researchers, they are a simple and efficient way of gathering information about variation within paddocks," he said... "One way of being confident about yield differences observed in strip trials is to keep them simple: stick to one or two treatment differences and make the size difference between treatment rates large...
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