Life Sciences Commons^™

Use Of Water By Piglets In The First Days After Birth, David Fraser, P. A. Phillips, B. K. Thompson, W. B. Peeters

Ontogeny Collection

Use of drinking water was determined for 51 litters of piglets by weighing and refilling a water dispenser each day for the first 4 d after farrowing. Measures of spillage, evaporation, and piglet drinking behavior indicated that most disappearance of water represented actual drinking by the piglets. Water use varied greatly among litters with an average of 46 g d^‒1 per piglet over the 4 d, and a range of negligible use to about 200 g d^‒1. Water use, especially on day 2, was correlated negatively with the average weight gain of the litter during the first …

Nutrient And Water Interrelationships Between Crested Wheatgrass And Two Shrub Species, Paul B. Baker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

When crested wheatgrass (Agropyron desertorum) grows in mixture with sagebrush (Artemisia tridentata), its production declines. Its production increases when grown in mixture with fourwing saltbush (Atriplex canescens), according to previous reports. This study investigated soil water extraction and potassium (K) nutrition of the two shrubs to identify possible causes of the differential responses of crested wheatgrass.

Crested wheatgrass had reduced, rather than increased, nitrogen (N) and K yield in mixture with fourwing saltbush. No differences in N and phosphorous (P) concentrations were observed between sagebrush and fourwing saltbush, but fourwing saltbush had a much …

A Physical Theory Of The Living State: Application To Water And Solute Distribution, G. N. Ling

Scanning Microscopy

This review begins with a summary of the disproof of the membrane-pump theory and the alternative theory of the living cell, the association-induction (AI) hypothesis. Being alive in the AI hypothesis represents the maintenance of a high (negative) energy-low entropy state in which the two major components K⁺ and water of the living cell are closely associated with the third major component of the living cells, proteins. K⁺ is adsorbed singly on 𝜷-and γ-carboxyl groups and the bulk of cell water in multilayers on the exposed NHCO groups of fully extended polypeptide chains of cell proteins. These adsorptions …

Ec88-729 Irrigation Pumping Plant Alternatives, Richard T. Clark, Norman L. Klocke

University of Nebraska-Lincoln Extension: Historical Materials

Irrigation pumping costs depend on the requirements of the individual pumping plant. Energy use is the major component of pump operating costs. Pumping efficiency, pumping lift, water pressure and the amount of water delivered all influence the energy required to operate the pumping plant.

This extension circular contains information for irrigators on how to use a computerized spreadsheet developed in 1988 to calculate irrigation pumping costs and savings.

G88-888 Flow Control Devices For Center Pivot Irrigation Systems, William L. Kranz

University of Nebraska-Lincoln Extension: Historical Materials

Several factors contribute to the need for sprinkler flow rate regulators. This NebGuide discusses them.

Many center pivot irrigation systems operate on undulating terrain. Systems operated on undulating terrain experience large pressure differences in the pivot pipeline. Since water distributed by each sprinkler is determined by the pressure in the pipeline, water applied by these systems can be non-uniform.

Pressure regulating devices that equalize the flow of water from individual sprinklers have become more common since uniform water application may save water and increase overall crop production. When installing a sprinkler package on a new system or replacing sprinklers on …

G88-873 Growing Shrubs From Seed, Richard J. Lodes, Mike Kuhns

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide is about gathering and growing seeds for shrubs.

Growing shrubs from seed is educational and fun. Many shrub species are not available commercially, so gathering seed and growing your own plants may be the only way to get them. Interesting or unusual shrubs from a neighbor's yard or from the wild can be propagated from seed. Shrubs started from seed also may be less expensive than commercially produced seedlings.