EC24-721 Dairy Barns for Nebraska

The increasing interest shown among the farmers thruout this state in the betterment of dairy stock, and the tendency to give more attention to dairying on the farms, is bringing to the Agricultural College a great many requests for plans and suggestions for dairy barn construction. It is impossible to give every one of these inquiries individual attention to the extent of drawing a detailed plan to suit the conditions in each case. It is hoped therefore, that the material contained in this bulletin will offer helpful suggestions and answer many questions in the minds of prospective dairy men and dairy barn builders relative to the arrangement and construction of barns.

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.

The nitrogen sufficiency index underlying estimates of nitrogen fertilization requirements of common bean

Chlorophyll determination with a portable chlorophyll meter can indicate the period of highest N demand of plants and whether sidedressing is required or not. In this sense, defining the optimal timing of N application to common bean is fundamental to increase N use efficiency, increase yields and reduce the cost of fertilization. The objectives of this study were to evaluate the efficiency of N sufficiency index (NSI) calculated based on the relative chlorophyll index (RCI) in leaves, measured with a portable chlorophyll meter, as an indicator of time of N sidedressing fertilization and to verify which NSI (90 and 95 %) value is the most appropriate to indicate the moment of N fertilization of common bean cultivar Perola. The experiment was carried out in the rainy and dry growing seasons of the agricultural year 2009/10 on a dystroferric Red Nitosol, in Botucatu, São Paulo State, Brazil. The experiment was arranged in a randomized complete block design with five treatments, consisting of N managements (M1: 200 kg ha-1 N (40 kg at sowing + 80 kg 15 days after emergence (DAE) + 80 kg 30 DAE); M2: 100 kg ha-1 N (20 kg at sowing + 40 kg 15 DAE + 40 kg 30 DAE); M3: 20 kg ha-1 N at sowing + 30 kg ha-1 when chlorophyll meter readings indicated NSI < 95 %; M4: 20 kg ha-1 N at sowing + 30 kg ha-1 N when chlorophyll meter readings indicated NSI < 90 % and, M5: control (without N application)) and four replications. The variables RCI, aboveground dry matter, total leaf N concentration, production components, grain yield, relative yield, and N use efficiency were evaluated. The RCI correlated with leaf N concentrations. By monitoring the RCI with the chlorophyll meter, the period of N sidedressing of common bean could be defined, improving N use efficiency and avoiding unnecessary N supply to common bean. The NSI 90 % of the reference area was more efficient to define the moment of N sidedressing of common bean, to increase N use efficiency.

Second Annual Kansas State–Nebraska Biochemical Engineering Symposium (April 29, 1972)

This booklet contains abstracts of papers presented at a biochemical engineering symposium conducted at the University of Nebraska-Lincoln on April 29, 1972. This was the second annual symposium on this subject, the first having been held at Kansas State University on June 4, 1971. It is expected that future symposia will alternate between the two campuses. ContentsS.H. Lin, Kansas State University, "Enzyme Reaction in a Tubular Reactor with Laminar Flow" Gregory C. Martin, University of Nebraska, "Estimation of Parameters in Population Models for Schizosaccharomyces pombe from Chemostat Data" Jaiprakash S. Shastry and Prakash N. Mishra, Kansas State University, "Immobilized Enzymes: Analysis of Ultrafiltration Reactors" Mark D. Young, University of Nebraska, "Modelling Unsteady-State Two-Species Data Using Ramkrishna's Staling Model" G.C.Y. Chu, Kansas State University, "Optimization of Step Aeration Waste Treatment Systems Using EVOP" Shinji Goto, University of Nebraska, "Growth of the Blue-Green Alga Microcytis aeruginosa under Defined Conditions" Prakash N. Mishra and Thomas M.C. Kuo, Kansas State University, "Digital Computer Simulation of the Activated Sludge System: Effect of Primary Clarifier on System Performance" Mark D. Young, University of Nebraska, "Aerobic Fermentation of Paunch Liquor"

Proceedings of the Fourth Annual Kansas State–Nebraska Biochemical Engineering Symposium

The symposium whose papers are abstracted here was the fourth in a series held alternately at Kansas State University and the University of Nebraska–Lincoln. Requests for further information on projects conducted at Kansas State should be directed to Professor L.E. Erickson and on those at Nebraska to the editor. ContentsJohn C. Heydweiller, "Estimating Sedimentation of Organisms in a Tower-Type Activated Sludge System" Raymond C. Eliason, "Properties and Utilization of Small Particulates in Cattle Manure" Kenneth H. Hsu, "Oxygen Transfer in Tower Systems with Motionless Mixers" Raymond C. Eliason, "Hydrolysis of Sucrose by 20 Invertase Immobilized on Hollow Fibers" Robert Shipman, "Single Cell Protein from Photosynthetic 26 Bacteria" Peter J. Reilly, "Stability of Commensalistic Systems"

Proceedings of the Twelfth Annual Biochemical Engineering Symposium

This work presents the proceedings of the twelfth symposium which was held at Kansas State University on April 24, 1982. Since a number of the contributions will be published in detail elsewhere, only brief reports are included here. Some of the reports describe current progress with respect to ongoing projects. Requests for further information should be directed to Dr. Peter Reilly at Iowa State University, Dr. V. G. Murphy at Colorado State University, Dr. Rakesh Bajpai at University of Missouri, Dr. Ed Clausen at University of Arkansas, Dr. L. T. Fan and Dr. L. E. Erickson at Kansas State University. ContentsA Kinetic Analysis of Oleaginous Yeast Fermentation by Candida curvata on Whey Permeate, B.D. Brown and K.H. Hsu, Iowa State University Kinetics of Biofouling in Simulated Water Distribution Systems Using CSTR, T.M. Prakash, University of Missouri Kinetics of Gas Production by C. acetobutylicum, Michael Doremus, Colorado State University Large Scale Production of Methane from Agricultural Residues, O.P. Doyle, G.C. Magruder, E.C. Clausen, and J.L. Gaddy, University of Arkansas The Optimal Process Design for Enzymatic Hydrolysis of Wheat Straw, M.M Gharpuray and L.T. Fan, Kansas State University Extractive Butanol Fermentation, Michael Sierks, Colorado State University Yields Associated with Ethyl Alcohol Production, M.D. Oner, Kansas State University Estimation of Growth Yield and Maintenance Parameters for Microbial Growth on Corn Dust, B.O. Solomon, Kansas State University Milling of Ensiled Corn, Andrzej Neryng, Iowa State University Protein Extraction from Alfalfa, Ravidranath Joshi, Colorado State University Analysis of Disaccharides by Capillary Gas Chromatography, Z.L. Nikolov, Iowa State University Characterization of High Viscosity Fermentations in Tower Fermentors, S.A. Patel and C.H. Lee, Kansas State University Utilization of Sugars in Sorghum Molasses by Clostridium acetobutylicum B. Hong, K.C. Shin, and L.T. Fan, Kansas State University

Agricultural policy analysis and planning : a summary of two recent analyses of A.I.D.-supported projects worldwide /

"August 1988."

Migratory farmworkers in the midcontinent streams /

Cover title.

Evaluation of measures for controlling sediment and nutrient losses from irrigated areas /

Mode of access: Internet.

Acute and chronic toxicity of HCN to fish and invertebrates /

"January 1979."

Composition and digestibility of corn ensilage, cowpea ensilage, soja bean ensilage, and corn-fodder /

Caption title.

Insect injuries to the seed and root of Indian corn /

Caption title.

Market classes and grades of meat /

Mode of access: Internet.

Cooling and holding eggs on the ranch /

Mode of access: Internet.