Education Commons^™

Rb56-178 Streak Mosaic Of Wheat In Nebraska And Its Control, R. Staples, W.B. Allington

University of Nebraska-Lincoln Extension: Historical Materials

A mosaic of wheat was first observed in Nebraska by Peltier in 1922. Peltier found diseased plants in a large number of winter and spring wheat varieties at Lincoln, and in some instances, he successfully inoculated wheat and corn from the juice of infected plants. The temperatures under which Peltier maintained his inoculated plants are unknown and other criteria now employed to characterize the viruses were not utilized. It is probable, however, that he was working with what is now known as wheat streak mosaic virus.

This bulletin reports the results of studies on the epidemiology of wheat streak mosaic …

Rb56-181 Rate Of Potato Tuber Growth On Dryland At The Box Butte Experiment Farm, H.O. Werner

University of Nebraska-Lincoln Extension: Historical Materials

Relatively late planting of potatoes, i.e., between June 12 and 25, has become the prevailing practice in the dryland areas of western Nebraska. Late planting distinctly improves the color and type of tubers, and reduces losses due to insects and diseases (especially soil-borne diseases caused by Fusarium and Streptomyces).

Beginning in 1937 and continuing to 1954 (in all except two years), potatoes growing with dryland culture at an altitude of 4,000 feet on the Box Butte Experiment Farm were harvested semimonthly to determine: time and rate of tuber growth; size of tubers produced by various dates; time and rate of …

Rb56-182 Forty Years Of Dairy Cattle Breeding At The North Platte Experiment Station, Mogens Plum, Myron G.A. Rumery

University of Nebraska-Lincoln Extension: Historical Materials

In 1913 the Nebraska Legislature appropriated $17,500 to establish a Dairy Department at the North Platte Experiment Station. The department's herd was to be used in demonstrating management and breeding practices and as a source of breeding stock.

Since the North Platte herd was started, research in the field of animal breeding has developed new concepts in many phases of dairy cattle breeding and selection. In 1948 a regional project was started to study the improvement of dairy cattle through breeding and the herd of Holstein cattle at the North Platte Experiment Station became a part of this project.

The …

Rb56-176 Influence Of Atmospheric And Soil Moisture Conditions In Diurnal Variations In Relative Turgidity Of Potato Leaves, H.O. Warner

University of Nebraska-Lincoln Extension: Historical Materials

Great variations in morphological characteristics and in ability to survive heat and drought are observable among the hundreds of varieties and thousands of clones used in modern potato breeding programs.

The experimental work reported herein was planned to determine:

1. The extent and nature of the changes in the relative turgidity (R.T.) of leaves of the potato plant during the diurnal cycle.
2. The extent to which R.T. of potato leaves is influenced by atmospheric conditions, soil moisture, variety and age of plants.
3. The extent to which visible evidence of water shortage in leaves is indicative of water loss from them as …

Rb56-180 False Smut Of Buffalograss, John L. Weihing

University of Nebraska-Lincoln Extension: Historical Materials

False smut of buffalograss, Buchloe dactyloides (Nutt.) Engelm., caused by Cercospora seminalis Ell. & Ev. is a disease that destroys the unfertilized ovary. The disease was first reported by J. B. Ellis and B. M. Everhart in 1888. They gave only a brief description of the disease and named the causal fungus Cercospora seminalis. The origin of the term "false smut" is unknown to the author, but it so descriptively fits the general appearances of the disease that one readily understands its usage. The following studies were conducted from 1950 to 1954.

Rb56-179 Comparative Measurements Of Holstein, Ayrshire, Guernsey, And Jersey Females From Birth To Seven Years, H.P. Davis, I.L. Hathaway

University of Nebraska-Lincoln Extension: Historical Materials

Body measurements are important for a proper understanding of how growth takes place in animals. Unfortunately, few growth data other than for weight have been published concerning dairy cattle.

This is a report of measurements of females in the University of Nebraska dairy herd made as part of a long-time growth study. During the period 1922 to 1942 each animal born into the herd was weighed and measured at regular intervals. Presented here are the data for weight, height, length, width, depth, girth and hide thickness for females of the Holstein, Ayrshire, Guernsey, and Jersey breeds. The average body measurements …