Life Sciences Commons^™

Results Of The Seventh International Winter Wheat Performance Nursery Grown In 1975, K. D. Wilhelmi, S. L. Kuhr, V. A. Johnson, P. J. Mattern, J. W. Schmidt

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the seventh report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station and the Agricultural Research Service, U.S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. The Nursery was designed to (1) test the adaptation of winter wheat cultivars in a range of latitudes, daylengths, fertility conditions, water management regimes, and disease complexes; (2) identify superior winter cultivars to serve as recipient genotypes for high protein and high lysine genes, and (3) test the degree of expression and stability of …

Growing Degree Days Predictions For Corn And Sorghum Development And Some Applications To Crop Production In Nebraska, R. E. Neild, M. W. Seeley

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The concept of growing degree days (GDD) originated with observations by Reamur (1735) that plant development is more closely related to the temperature accumulated to a given stage than with time alone. It was not until nearly 200 years later, however, that Merriam (1894), Livingston (1916) and Klages (1942) began to use temperature accumulations in plant distribution studies and in crop geography. In the early 1950's, a system involving growing degree days became widely used in the canning industry to schedule plantings and thus control time of harvest of rapidly maturing vegetables. This system provided a more precise control of …

Soil Science Research Report - 1977

Soil Science Research Reports

Corn Experiments

Nitrogen Rates on Corn .............. Section 1

Nitrogen Rates for Corn Grain in an Eco-fallow Rotation .............. Section 2

Anhydrous Ammonia and N-Serve^R for Irrigated Corn .............. Section 3

Anhydrous Ammonia and N-Serve^R Fall Applied .............. Section 4

Evaluation of Cold-Flow™ Method of Applying Anhydrous Ammonia .............. Section 5

Influence of Nitrogen Applied at Silking with a Hi-boy on Irrigated Corn ...... Section 6

Effect of Broadcast Phosphorus, Potassium and Zinc for Irrigated Corn on Sandy Soils .............. Section 7

Lime and Boron for Corn .............. Section 8

Effect of Irrigation Well Capacity and Plant Population …