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<br />Projected Benefits <br />Cloud seeding results to date and most estimates indicate <br />a projected rain increase of 1 to 2 inches per growing <br />season. This generally amounts to an overall average of <br />10-percent augmentation. The overall average is made up <br />of 100- to 200-percent increases from seeding light and <br />moderage shower-type cumulus, no increases from the larger <br />cumulus or thunderstorm and other weather system types, <br />and possibly causing smaller warm-type cumulus clouds to <br />rain which would not have rained naturally. To achieve <br />a 10-percent overall increase, clouds where possible <br />decreases occur would not be seeded and both ice-phase <br />(silver iodide) and hygroscopic seeding need to be used. <br /> <br />Studies made for the Bureau of Reclamation by agricultural <br />specialists at North Dakota State University, South Dakota <br />State University, Montana State University, University of <br />Wyoming, University of Oklahoma, and University of Illinois <br /> <br />agree that 1 to 2 inches more rain per growing season could <br />yield the following increased production and benefit per <br />acre (at mid-1972 prices): <br /> 300 pounds of alfalfa at $12 per ton <br /> 150 pounds of hay at $10 per ton <br /> 20 pounds of grazing forage at $ 5 per ton <br /> 4 bushels of corn at $1.20 per bushel <br /> 2 bushels of barley at $.70 per bushel <br /> 2-3 bushels of wheat at $1. 20 per bushel <br /> 16 <br />