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A hand-help date logger for producing weed maps by field walking
1996Farmers are having to gather increasing amounts of data on their soils and crops. Precision agriculture - the targeting of inputs such as fertilizers and herbicides according to locally dertermined ("metre-by-metre") requirements - is based on a knowledge of the spatial variation of soil and crop parameters across a field.
Le Bars, J.M., Stafford, J.V.
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Comparative Costs of Weeding Onions by Hand or with Monuron, CIPC, and CDAA
Weeds, 1958R. E. Nylund, D. C. Nelson, D. H. Dinkel
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