The World Book Encyclopedia, Tom 4World Book, Incorporated, 1993 An encyclopedia designed especially to meet the needs of elementary, junior high, and senior high school students. |
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Strona 990
... Soil conservationists are employed by the U.S. Soil Conservation Service , the U.S. Forest Service , the U.S. Bureau of Land Management , and various other federal and state agencies . State governments employ soil con- servationists to ...
... Soil conservationists are employed by the U.S. Soil Conservation Service , the U.S. Forest Service , the U.S. Bureau of Land Management , and various other federal and state agencies . State governments employ soil con- servationists to ...
Strona 1060
... soil . Most corn farmers use a mold- board plow to prepare the soil for planting . Such a plow turns over about the top 8 inches ( 20 centimeters ) of soil in rows about 14 to 22 inches ( 36 to 56 centimeters ) wide . The plowing buries ...
... soil . Most corn farmers use a mold- board plow to prepare the soil for planting . Such a plow turns over about the top 8 inches ( 20 centimeters ) of soil in rows about 14 to 22 inches ( 36 to 56 centimeters ) wide . The plowing buries ...
Strona 1089
Sources : U.S. Dept. of Agriculture ; Ne Preparing the soil . After harvesting a crop , cotton rowers shred the stalks and plow them into the soil , or ave them on the surface to prevent erosion . In spring , Dey till the soil with ...
Sources : U.S. Dept. of Agriculture ; Ne Preparing the soil . After harvesting a crop , cotton rowers shred the stalks and plow them into the soil , or ave them on the surface to prevent erosion . In spring , Dey till the soil with ...
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