Feeding and management investigations at the United States Dairy Experiment Station at Beltsville, MD., 1930 report /

"January, 1932."

Feeding and management investigations at the United States Dairy Experiment Station at Beltsville, Md., 1932 report /

"December 1933."

Annual report of the Director of the Agricultural Station ...

No. <2>-25 issued as pt. 2 of the Annual report of the Rhode Island State College; no. 26- reprinted from the report of the ... State College; no. 26-29, 31, in the Report of the ... State College (no. 28-29 never published in separate form); no. 35, 1922, issued as Bulletin no. 193.

Experiment station work.

Issued also as the Dept. of Agriculture Farmers' bulletin.

Report of the Federal Experiment Station in Puerto Rico /

Report year ends June 30.

Engineering experiment station record, summary; a summary of engineering research at the land-grant colleges and universities, 1929.

Mode of access: Internet.

Agricultural Emergency in Iowa, 1933

This book contains ten articles, originally published as circulars of the Iowa Agricultural Experiment Station dealing with the Iowa Agricultural farm crisis situation in 1932 and 1933.

THE EFFECTS OF ORNITROL ON WILD POPULATIONS OF RED-WINGED BLACKBIRDS AND GRACKLES

For the past three years the New Jersey Department of Agriculture, in coop¬eration with the New Jersey Agricultural Experiment Station, has conducted field evaluations on the effects of reproductive suppressants on wild populations of red-winged blackbirds. These studies have been performed in conjunction with the North East 49 (a Federally sponsored regional project which presently has nine states in the North East and Ohio cooperating to develop means to combat bird damage to agricultural crops) regional project on control of bird depredations. Field evaluations in 1968 and 1969 centered around the effects of TEM (tri-ethylene melamine) on the reproductive rates of red-winged blackbirds. At the close of the 1969 season further field testing of the chemical was discontinued because of the material's apparent lack of effectiveness as a reproductive inhibitor. In 1970 the field evaluations were conducted to determine the effects of Orni-trol (20, 25-diazocholesterol dihydrochloride, supplied by G. D. Searle and Company, Chicago, Illinois) on the reproductive rates of red-winged blackbirds. A small colony of common grackles was also studied during this same investigation.

SAMPLING OF CORN TO ASSESS BIRD DAMAGE: A Preliminary Review of a Comprehensive Study

"How large a sample is needed to survey the bird damage to corn in a county in Ohio or New Jersey or South Dakota?" Like those in the Bureau of Sport Fisheries and Wildlife and the U.S.D.A. who have been faced with a question of this sort we found only meager information on which to base an answer, whether the problem related to a county in Ohio or to one in New Jersey, or elsewhere. Many sampling methods and rates of sampling did yield reliable estimates but the judgment was often intuitive or based on the reasonableness of the resulting data. Later, when planning the next study or survey, little additional information was available on whether 40 samples of 5 ears each or 5 samples of 200 ears should be examined, i.e., examination of a large number of small samples or a small number of large samples. What information is needed to make a reliable decision? Those of us involved with the Agricultural Experiment Station regional project concerned with the problems of bird damage to crops, known as NE-49, thought we might supply an ans¬wer if we had a corn field in which all the damage was measured. If all the damage were known, we could then sample this field in various ways and see how the estimates from these samplings compared to the actual damage and pin-point the best and most accurate sampling procedure. Eventually the investigators in four states became involved in this work1 and instead of one field we were able to broaden the geographical base by examining all the corn ears in 2 half-acre sections of fields in each state, 8 sections in all. When the corn had matured well past the dough stage, damage on each corn ear was assessed, without removing the ear from the stalk, by visually estimating the percent of the kernel surface which had been destroyed and rating it in one of 5 damage categories. Measurements (by row-centimeters) of the rows of kernels pecked by birds also were made on selected ears representing all categories and all parts of each field section. These measurements provided conversion factors that, when fed into a computer, were applied to the more than 72,000 visually assessed ears. The machine now had in its memory and could supply on demand a map showing each ear, its location and the intensity of the damage.

Incomes of migratory agricultural workers /

Tx Doc no.: Z, TA245.7, B873, no. 950.

Changes in spatial grain-price patterns in the United States and in the North Central region, 1946-1958 /

"Agricultural experiment stations of Alaska, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin, and the U.S. Department of Agriculture, cooperating."

Disposing of surplus fluid milk in midwestern markets /

Cover title.

The Mechanics of supply-demand adjusters for midwestern milk markets /

Cover title.

The relationship between central market egg reports and producer prices in selected North Central states /

"The research on which this report is based was undertaken as part of the North Central Regional Poultry Marketing Project NCM-14."--P. [3].

Agricultural economics bulletin.

Mode of access: Internet.