Experiment station work.

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

Illinois bulletin.

Mode of access: Internet.

Report of the Federal Experiment Station in Puerto Rico /

Report year ends June 30.

Principal soil association areas of Illinois.

Mimeographed.

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

Mode of access: Internet.

Making experiment station results more useful to African fish farmers

Rather than using more or less ideal conditions for setting experimental controls, the use of conditions similar to those likely to be encountered by farmers should produce research results which are realistically achievable on the farm. ICLARM has developed an approach to farmer-led experimentation which utilizes a spreadsheet to collate and analyze data collected from participating farmers. The simulation of actual management practices utilized by farmers produced results in replicated on-station trials which were within 11% of net yields on-farm. In addition to giving researchers a tool for comparing farm and station management practices, giving farmers a realistic indication of what yields will be if a technology is adopted should help overcome the problems of disillusionment often encountered when farm results fall below those expected by researchers on the basis of experiment station studies.

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.

Market classes and grades of meat /

Mode of access: Internet.

The economics of machinery choice in corn production /

Cover title.

Statistical analysis of the goodness of classical factor analysis regression (CFAR) /

Cover title.

Incomes of migratory agricultural workers /

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

Agricultural economics bulletin.

Mode of access: Internet.

Circular /

Title from cover.

Sorghum movements in the United States : interregional flow patterns and transportation requirements in 1977 /

Includes bibliographical references.

SPECIAL REPORT

Mode of access: Internet.