Irrigation method
AssigneeCiba Specialty Chemicals Water Treatments Ltd.
InventorsNone recorded
Life of this patent
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Abstract
Large crop areas are irrigated, for instance by pivot irrigation, by being sprayed with water into which a substantially stable dispersion in a liquid of water soluble polymer particles has been metered at a predetermined low rate.
Claims13
A method of irrigating a crop area of at least 1000 mm2 by pumping water through feed ducting and a mixing zone to a spray manifold supplying one or more spraying devices by which the water is sprayed onto the crop area and in which a substantially stable dispersion in a liquid of water soluble polymer particles is metered at a predetermined rate of 0.5 to 30 50 ppm into the water at or before the mixing zone and the polymer particles are substantially dissolved into the water before the water is sprayed from the spraying devices.
Dependencies are inferred from the claim text.