Fertility Maintenance and Management of South Dakota Soils

The soil is our most valuable natural resource. Under proper management the soil will last indefinitely, because its fertility and productivity will not only be maintained but may actually be increased. Changes in the soil due to crop ping which affect fertility and productivity are gradual processes. These are the cumulative effects of crop ping on the soil: (1) Depletion of soil organic matter (2) Deterioration of soil structure or tilth (3) Appearance of nitrogen and phosphorus deficiencies in crops (4) Increased tendency of the soil to erode by wind and water (5) Failure of crop s to grow and mature properly. This bulletin, with its suggested management and maintenance practices, hopes to help the South Dakota farmer counteract these disastrous effects of cropping

Fertility Maintenance and Management of South Dakota Soils

A successful and profitable agriculture must depend upon a sound and permanent system of soil management. A program of sound soil management is necessary to conserve our soil resources in order to insure present and future stability in agriculture. Changes in the soil which make it less suitable for crop production are gradual processes. Some of these changes are depletion of soil organic matter, appearance of nitrogen and other nutrient deficiencies, deterioration in soil structure, increased susceptibility of the soil to wind and water erosion, failure of crops to grow and mature properly, and lower crop yields. South Dakota soils arc still relatively fertile but many of these signs of soil depletion are beginning to appear. These changes or signs of soil depletion must be recognized and measures adopted to restore and maintain the productivity of the soil

Twenty Years of Soil Management on a Vienna Silt Loam

During the 20 years of this experiment, soil fertility levels progressively declined with continuous cropping when no fertility maintenance practices were used. Consequently, the need for fertility improvement practices has increased with each successive year. Small grains have given more consistent responses to fertilizer treatments than corn. With the continued decline in fertility, response to fertilizer by corn is expected to be more consistent in the future

Research in Crops and Soils: A Progress Report

The Experiment Station Agronomy Farm, located 1 mile east of Brookings, is representative of a large area of land in eastern South Dakota. It consists of 160 acres, 150 of which are laid out in various soil and crop experiments. The soil, commonly called loam and classified as Barnes Loam, is in a good state of fertility. Results of the experiments on this farm will indicate what may be expected from similar soil management, cropping systems, and crop varieties on the same type of soil and under comparable climatic conditions. Numerous experiments are in progress on this farm. The information in this circular is a progress report on those experiments for which results can now be evaluated. Further results will be published at intervals as the experiments progress

1947 Corn Performance Tests, South Dakota

Each year the Agronomy Department of the South Dakota Agricultural Experiment Station conducts corn yield trials on commercial hybrids and varieties in order to make available impartial information on the relative performance of the entries included when they are grown at certain selected places in the state. Information includes yielding ability, maturity requirements and other characteristics. Entries in each test are those hybrids which have enjoyed the greatest popularity on the basis of sales\u27 volume during the previous year for the area represented by that test and well known open-pollinated varieties which have been used in that area. The areas represented by the tests are those into which the state might be divided on the basis of soil type, elevation, rainfall and length of growing season

Research in Crops and Soils: A Progress Report

The Experiment Station Agronomy Farm, located 1 mile east of Brookings, is representative of a large area of land in eastern South Dakota. It consists of 160 acres which are laid out in various soil and crop experiments. The soil, commonly called loam and classified as Vienna loam, is in a good state of fertility. Results of the experiments on this farm will indicate what may be expected from similar soil management, cropping systems, and crop varieties on the same type of soil and under comparable climatic conditions. Numerous experiments are in progress on this farm. The information in this circular is a progress report on those experiments for which results can now be evaluated. Further results will be published at intervals as the experiments progress

Progress Report of Research in Crops and Soils at the South Dakota Experiment Station

The Agronomy Farm, located one mile east of Brookings, is representative of a large area of land in eastern South Dakota. It consists of 160 acres, of which about 100 acres are now laid out in various soil and crop experiments. The soil, commonly called loam and classified as Barnes Loam, is in a good state of fertility. Results of the experiments on this farm will closely indicate what may be expected from similar soil management, cropping systems and crop varieties on the same type of soil and under similar climatic conditions. Numerous experiments are now in progress on this farm. The information given in this circular represents a progress report only on those experiments for which results can now be evaluated. Further results will be published at intervals as the experiments progress

Progress Report of Research in Crops and Soils

The Experiment Station Agronomy Farm, located one mile east of Brookings, is representative of a large area of land in eastern South Dakota. It consists of 160 acres, of which about 130 acres are now laid out in various soil and crop experiments. The soil, commonly called loam and classified as Barnes Loam, is in a good state of fertility. Results of the experiments on this farm will indicate closely what may be expected from similar soil management, cropping systems and crop varieties on the same type of soil and under comparable climatic conditions. Numerous experiments are now in progress on this farm. The information given in this circular represents a progress report on only those experiments for which results can now be evaluated. Further results will be published at intervals as the experiments progress

Progress Report of Research in Crops and Soils at the South Dakota Experiment Station

The Agronomy Farm, located one mile east of Brookings, is representative of a large area of land in eastern South Dakota. It consists of 160 acres, of which about 130 acres are now laid out in various soil and crop experiments (Fig. 1). The soil, commonly called loam and classified as Barnes Loam, is in a good state of fertility. Results of the experiments on this farm will closely indicate what may be expected from similar soil management, cropping systems and crop varieties on the same type of soil and under similar climatic conditions. Numerous experiments are now in progress on this farm. The information given in this circular represents a progress report on only those experiments for which results can now be evaluated. Further results will be published at intervals as the experiments progress