Written by cpm
Download PDF Is your spray water working for or against you? CPM takes a look at water quality, how this can affect spray efficacy and what can be done about it. Improved efficacy of up to 10% can be achieved. By Rob Jones Getting the most out of contact herbicides has rarely been more important than this spring after an autumn during which opportunities to apply residual herbicides were few and far between. That means optimizing the efficacy of herbicides will be key, says ProCam agronomist Mike Thornton. He believes water conditioning with an acidifying agent could help achieve this in some situations. Having worked extensively in areas of hard water in Sussex, Mike knows only too well the variability that can result from applications where the pH of water in the spray tank is sub-optimal. He says it’s a phenomenon which can lead to vastly reduced weed control and field margins where competition from aggressive grassweeds becomes a problem. With grassweeds increasingly difficult to control, there are benefits for incremental gains wherever they can be found. And making sure some of the herbicide isn’t being locked up by salts in the spray water is one way of getting a…
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