Following the contour (How to strip-crop Iowa land)

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Date
1943-02-01
Authors
Peterson, J.
Clapp, L.
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Extension and Experiment Station Publications
It can be very challenging to locate information about individual ISU Extension publications via the library website. Quick Search will list the name of the series, but it will not list individual publications within each series. The Parks Library Reference Collection has a List of Current Series, Serial Publications (Series Publications of Agricultural Experiment Station and Cooperative Extension Service), published as of March 2004. It lists each publication from 1888-2004 (by title and publication number - and in some cases it will show an author name).
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Abstract

Many Iowa farmers are now farming around the hills instead of up and down them. The results of many investigations have justified for some time this practice as a soil- and water-conserving measure, but until comparatively recently there was little contour farming practiced in the state. Since contour farming has been adopted on many Iowa farms in the last few years, its value under real Iowa conditions can be appraised on the basis of actual experience. “The proof of the pudding is in the eating,’’ according to the old English proverb, and so it is with contour farming. Farmers have found it to be a wise and feasible practice as shown by the fact that only a very few of those who have given it a fair trial have abandoned it.

The reasons why contour farming helps to conserve soil and water are obvious. Every row running around the hill acts as a little barrier which checks the velocity of the surface runoff, causing it to unload its silt and to flow more slowly from the land so that more of the water will have time to soak into the soil. Strips of close-growing, soil-binding crops, planted alternately between strips of contour row crops, likewise lessen the amount of the slope exposed by the clean tillage. The close-growing crop will check the velocity of any runoff from the cultivated strip above and cause it to drop its load of silt. The soil covered by the soil-binding crop will be held against erosion, and the continuous extension of rills and gullies through the field will be checked.

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