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Cropwatch No. 98-12, June 12, 1998, Lisa Brown Jasa

Crop Watch

Inside

Field updates…….110

Yellow corn fields…….112

Low temperatures…….112

Weather update…….112

Row crop diseases…….113

Leaf rust and tan spot…….113

European corn borers…….114

ECB worksheet…….115

Crops update…….115

Selecting sprayer nozzles…….116

Spray droplet size…….117

Herbicide injury…….117

Soil test differences…….118

Cropwatch No. 98-11, June 5,1998, Lisa Brown Jasa

Crop Watch

Inside

Field updates…………100

Assessing soybean loss…………101

Offset rows in soybeans…………101

Postemergence weed control in soybeans…………102

Banding herbicides…………103

Weed tour dates…………103

Replanting restrictions…………104

Biopesticides…………105

Woody plant control…………106

Hailed corn…………107

Hailed alfalfa…………107

Miller moths likely…………108

Diagnostic update…………108

Stalk borer damage…………108

The Nebline, June 1998

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Contents:
Wildwood Lake Watershed Project nearing completion
Propagation of shrubs from softwood cuttings
One potato, two potato, new potato
Pruning hedges
Water checklist for the landscape
Western Ribbon Snake Thamnophis proximus
My parents won’t want me to tell you this, but....
1998 pesticide container recycling begins in June
Glow little glowworm, glimmer, glimmer...
Harvest hay to fit your needs
1998 UNL Crop Management and Diagnostic Clinics
Prepare equipment for storage
Hay inoculants and preservatives
Plan the timing of grass hay harvest
Insect information on the web
Do you have a safe and adequate water supply?
Facts about CCA-pressure treated wood …

Ard News June 1998

Agricultural Research Division: News and Annual Reports

CONTENTS:
Comments from the Dean
Graduate Research Assistantships Paid from USDA Funds
CSREES Leadership Change
Fund for Rural America Update
"Pioneering the Future" Database
Nominations Sought for Junior Faculty Excellence in Research Award
Grants and Contracts Received April and May, 1998
New and Revised Projects
Proposals Submitted for Federal Grants
Campus Master Planning Activity
National Research Initiative Program - FY 1997
Agricultural Productivity in the U.S.
ARB Interdisciplinary Research Grants Program
Supporting ARD Researchers - IANR Land and Physical Facilities

Central Bank Of Nigeria Statistical Bulletin, June 1998, Central Bank Of Nigeria

CBN Statistical Bulletin

The explanatory notes outline the methods for compiling financial, public finance, national accounts, and international trade statistics in Nigeria. Financial statistics are compiled from balance sheets and financial statements, covering lending and deposit interest rates, bank liquidity, and clearing house statistics. Public finance statistics include government revenue, expenditure, and debt, as well as debt conversion programs and promissory notes. National accounts are based on the System of National Accounts and include data on GDP, Gross Fixed Capital Formation, consumption expenditure, and Gross National Savings. International trade statistics measure the value and quantity of imports and exports, presented in the Standard …

Cropwatch No. 98-10, May 22, 1998, Lisa Brown Jasa

Crop Watch

Inside

Field updates………….90

Few wheat disease………….91

Yield lag or yield drag………….92

Ecofarming meetings………….93

Postemergence herbicides………….94

Weed/crop competition………….94

Mixing herbicides………….97

Crop update………….97

Sugar beet maggots………….97

Precipitation………….97

New pest management guide………….98

Black stem in alfalfa………….98

Cropwatch No. 98-9, May 15,1998, Lisa Brown Jasa

Crop Watch

Inside

Flea beetles……………82

Field updates……………82

Potential wheat yield up……………83

Common stalk borers……………84

Weeds as signals……………85

Squirrels in corn……………86

Alfalfa disease, views ……………87

Nitrogen fertilizer sources……………88

Corn And Soybeans Marketing Patterns In South Dakota: Regional Variations, Bashir Qasmi

Economics Research Reports

U.S. Agriculture is going through a transition. Federal spending on farm programs is being curtailed and agricultural policies are being modified to make production of farm commodities responsive to market forces. In this competitive environment, efforts by the commodity groups for market development are becoming increasingly more important. However, to devise any market development plan for a commodity, understanding of the present status of the marketing system is important. At a minimum, one needs to know the methods of purchase and sale, types of buyers, shipment destinations, and transportation modes for the commodity. These aspects of grain marketing in South …

1997 Oregon Winery Report, Oregon Agricultural Statistics Service, Homer K. Rowley, Ronald F. Kriesel, Douglas C. Marousek

Oregon Wine Board Documents

This statewide survey report on Oregon wineries covers crush, equivalent wine production, inventory and equivalent inventory, and sales. The report also contains some comparisons of data for 1996 and 1997. According to this report, Oregon's wine industry continued to grow in 1997.

Cropwatch No. 98-8, May 8,1998, Lisa Brown Jasa

Crop Watch

Inside

Field updates ………. 72

Plant/Pest Clinic update……….76

Combining liquid nitrogen and fertilizers……….77

Testing for compatibility……….77

Crop update……….77

Planter, nozzle answers……….78

Pre-emergence herbicides used post-emergence……….78

Alfalfa weevil forecast……….79

Field scout training……….80

Wheat field days……….80

Beef Industry Productivity, Prices And Profits, Dillon M. Fuez

Cornhusker Economics

Cattle numbers in the U.S. peaked in 1975 at about 130 million head. Since that time, cattle numbers have generally been declining. Numbers are affected by the cattle cycle, but peak numbers are declining with each new cycle. The January 1, 1998 inventory of cattle was less than 100 million head.

Cropwatch No. 98-7, May 1, 1998, Lisa Brown Jasa

Crop Watch

Inside

Pale western cutworm……….62

Correction……….62

Field updates ………. 62

Inoculants for soybeans……….63

Benefit of rotation ………. 63

Insects in sorghum ………. 66

Crop diagnostic clinic………. 67

Reducing drift ………. 68

Cleaning sprayers ………. 69

Nitrogen at planting ………. 70

Treating turf diseases ………. 70

Diffuse Reflectance Changes During The Culture Of Cottage Cheese, Frederick Alan Payne, R. Carol Freels, Sue E. Nokes, Richard S. Gates

Biosystems and Agricultural Engineering Faculty Publications

A sensor for measuring diffuse reflectance of milk during the typical 6-h culture of cottage cheese was installed in a local manufacturing facility. Diffuse reflectance was found to increase slowly during the first three hours of the culture and increase rapidly toward the end of fermentation. The correlation between parameters generated from the diffuse reflectance profile and cutting time was sufficient to develop an algorithm for cutting time prediction. An algorithm incorporating t_max (time from adding culture to the maximum rate of change in reflectance) and slope of the reflectance curve at t_max predicted the operator selected cutting …

The Nebline, May 1998

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Contents:
Teens for Teens
Perennials with colorful foliage
Watering newly planted shade trees
Lilacs in the landscape
Repotting houseplants
How harmful are high copper levels in water?
Thank you!
Upcoming household hazardous waste collections
Tips for attracting birds
Yes, it’s safe, but does it work?
Snakes in the yard
Timing window approaching for control of leafy spurge
Soybean seed treatment good idea in cool, moist soils
Proper ballast improves tractor efficiency, stability
Controlling bolting musk thistle
Managing ponds for fish
Weed control in new tree plantings
Milk calcium for all it’s worth!
Focus on Food
The Clean Hands Campaign
How …

Perceived Fairness And Effectiveness Of Rangeland Collaborative Processes, Kimberly J. Richardson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Involvement in collaborative partnerships in natural resource management has become a popular method for natural resource management agencies to collect public input, cope with conflicts, and develop ecosystem management plans. This thesis evaluates various collaborative processes, emphasizing multiple-owner partnerships. Qualitative interviews of 46 landowners in Utah were conducted to reveal concerns and suggestions regarding multiple-owner landscape-level collaborative partnerships. Landowners were concerned about private property rights infringement and losing control of their private land. Landowners were primarily concerned about the fairness and effectiveness of any partnership in which they were involved.

However, they were willing to consider participating if certain procedural …

An Investigation Of Crystalline Intensity Of The Wood Of Poplar Clones Grown In Jiangsu Province, China, Bernard R. Parresol, Fuliang Cao

Aspen Bibliography

No abstract provided.

Some Statistical Considerations To On-Farm Trials In Kenya, Peter M. Njuho

Conference on Applied Statistics in Agriculture

The issue of design and analysis of on-farm trials is not clearly understood by agricultural researcher in Kenya. Since on-farm trials require participation and co-operation of the farmers who often differ in education level, chances of collecting unreliable and quite variable data are high. This paper highlights the importance of collecting quality data from on-farm trials, and in particular from the researcher designed and farmer managed trial type. Some complexities associated with the implementation, application of basic statistical principles, and analysis of on-farm trials are discussed. Questions that need to be considered priori to the implementation of any trial implementation …

Optimum Design On Step-Stress Life Testing, C. Xiong

Conference on Applied Statistics in Agriculture

This paper presents exact optimum test plans for simple time-step stress models in accelerated life testing. An exponential life distribution with a mean that is a log-linear function of stress, and a cumulative exposure model are assumed. Maximum likelihood methods are used to estimate the parameters of such models. Optimum test plans are obtained by minimizing the mean square error between the maximum likelihood estimate of a certain moment of the lifetime at a design stress and the real moment. The advantage of our optimum test plans is that it does not require large number of items to be tested. …

Modelling The Coefficient Of Variation In Factorial Experiments, Craig A. Wilson, Mark E. Payton

Conference on Applied Statistics in Agriculture

The coefficient of variation (CV) has long been used as a measure of the relative consistency of sample data. However, little attention has been paid to using the CV to make conclusions about the relative consistency of the population(s) from which the data are drawn, particularly when the data are observed in the context of a designed factorial experiment. This research focused on using three approximations to the exact distribution of the sample CV of normally distributed data (McKay's, David's, and Iglewicz and Myers') in the context of the generalized linear model to develop a method for detecting main effects …

A Repeated Measures Analysis Of The Effect Of Vegetative Buffers On Contaminant Runoff From Bermudagrass Turf, Craig A. Wilson, Mark E. Payton, Ellen W. Stevens, Raymond L. Huhnke, Daniel E. Storm, Nick T. Basta, James H. Baird

Conference on Applied Statistics in Agriculture

A repeated measures analysis was conducted on a set of data from a multi-year study to assess the effect of vegetative buffers on the surface runoff of selected herbicides and nutrients. Multiplicative models describing the observed behavior of runoff concentration over time for buffered and non-buffered plots were fitted on a log-transformed scale using linear mixed models with PROC MIXED in PC SAS version 6.11. A spatial power covariance structure was used. Additional models for contaminant mass flow rates were fitted to evaluate the effect of buffers on total runoff mass.

Sampling Plans For Monitoring Rust In Coffee Trees, Raw E. Macchiavelli, Roclo Rodriguez

Conference on Applied Statistics in Agriculture

Rust is an important fungal disease of coffee that causes defoliation of plants, thus affecting production and yield of coffee beans. Management of coffee rust with fungicides should be based on disease incidence at the onset of the epidemic. Previously, sampling has been done in a two-step systematic plan: trees are sampled in a systematic pattern (in the shape of a W covering the field), and then leaves are randomly sampled within each selected tree. Since coffee in Puerto Rico is typically grown in areas with pronounced slopes, these plans require walking diagonally along slopes, which is not feasible for …

Blocking In Partial Diallel Crosses, D. R. Aneja, L . S. Kaushik

Conference on Applied Statistics in Agriculture

Generally the parents are included in the experimental material for combining ability analysis for comparing the performance of crosses with parents and also for calculating heterosis. But unfortunately the parents are ignored for combining ability analysis because of non-availability of analysis procedure. Method of analysis of partial diallel crosses in incomplete blocks for the method -2 of Griffing (1956) has been given.

Construction Of Asymmetrical Response Surface Designs, V. P . Manocha, L. S. Kaushik

Conference on Applied Statistics in Agriculture

The paper proposes several methods for constructing both rotatable and non-rotatable asymmetrical response surface designs. The idea of modified rotatable design is introduced. In most of the experiments conducted by the experimenter it is not necessary that all the factors under study may have equal number of levels The methods proposed will have wider use under these circumstances.

On-Farm Research In A Decentralized Information Model Or Grassroots Statistics, Derrick N. Exner, Jennifer Kendall, Dick Thompson

Conference on Applied Statistics in Agriculture

Practical Farmers of Iowa (PFI) is an organization that seeks to provide interactive methods of relaying information through farmer-to-farmer sharing (farm field days, workshop discussions, networking) and the generation of new information. On-farm research (OFR) is an important information-generating activity of this group. PFI has shown that key to doing research on farms lies in combining practical protocols with the statistician's old familiar friends - replication and randomization.

We provide background on PFI and how PFI cooperators carne to using strip plots and paired comparisons to answer fundamental questions about what to do on their individual farms. We discuss the …

Blocking Factorial Designs In Greenhouse Experiments, Steve Ferris, Steven G. Gilmour

Conference on Applied Statistics in Agriculture

Experiments in greenhouses usually have to be conducted with very limited resources. This makes it particularly important to control the between plot variation by appropriate use of blocking. Many greenhouse experiments are naturally laid out in a pattern that makes a class of designs known as semi-Latin squares useful. Their properties have been studied recently by a number of authors and this work is reviewed. Often, the experimental treatments will have a factorial structure. An example of a 23 structure is used to show how factorial treatments can be assigned to treatment labels to ensure that the appropriate information is …

Daily Solar Radiation Estimated From Tkmpera Ture Records, D. W. Meek

Conference on Applied Statistics in Agriculture

Crop growth models and other environmental analyses require the input of daily global solar radiation values. Unfortunately many locations lack long-term solar radiation data. Most agricultural experiment stations, however, have daily temperature records. Also they are often the locations for which crop growth simulations are conducted. In an unpublished manuscript in the field of agricultural meteorology, researchers wanted to address this need. Specifically they wanted to estimate historical daily global solar radiation using daily air temperature data records by adapting a single published empirical intrinsically nonlinear model, a form of the Weibull curve. In order to help future research in …

Using Confidence Intervals To Obtain A Family Of Estimators Of The Intraclass Correlation Coefficient (Or Heritability), Brent D. Burch, Ian R. Harris

Conference on Applied Statistics in Agriculture

A family of point estimators is presented for the intraclass correlation coefficient (or heritability) in the balanced one-way random effects model. The family is obtained by equating a pivotal quantity to different values of the pivoting distribution, and includes the familiar ML and REML estimators. In terms of mean-squared error, most members of the family of estimators are admissible within the family. A sire model is used to illustrate the estimation of heritability. The authors provide guidance concerning the choice of an individual member of the family for estimation purposes and indicate how the method can be extended to unbalanced …

An Alternative For Mixed Model Analyses Of Large, Messy Data Sets (Mtdfreml), L. D. Van Vleck, R. K. Splan

Conference on Applied Statistics in Agriculture

Portable Fortran based programs (MTDFREML) were developed using a derivative-free algorithm to obtain REML estimates of (co)variance components. Computations are based on Henderson's mixed model equations for multiple-trait models with missing observations on some traits and incorporation of relationships among relatives. Many fixed and random factors are allowed with number of levels dependent on computer memory. Data sets with more than 40,000 genetic effects have been analyzed. Options allow solving MME at convergence. Constraints are automatically imposed. Expectations, standard errors of contrasts of solutions for fixed effects and prediction error variances of solutions for random effects can be obtained. Dimensions …

Statistical Threshold Values For Locating Quantitative Trait Loci, R. W. Doerge

Conference on Applied Statistics in Agriculture

The detection and location of quantitative trait loci (QTL) that control quantitative characters is a problem of great interest to the genetic mapping community. Interval mapping has proved to be a useful tool in locating QTL, but has recently been challenged by faster, more sophisticated regression methods (e.g. .. composite interval mapping). Regardless of the method used to locate QTL. the distribution of the test statistic (LOD score or likelihood ratio test) is unknown. Due to the quantitative trait values following a mixture distribution rather than a single distribution, the asymptotic distribution of the test statistic is not from a …

The Analysis Of Over-Dispersed Count Data From A Single Factor Study, George A. Capuano, Linda J. Young, Nancy L. Campbell

Conference on Applied Statistics in Agriculture

Methods for analyzing over-dispersed count data in a one-way layout were compared using a Monte Carlo study. Several variance stabilizing transformations were examined as alternatives to analyzing the raw data using a general linear model. Additionally, generalized linear models were fit using a log link. For the generalized linear model, three approaches to account for over-dispersion were investigated: (1) a negative binomial distribution with known k, (2) a Poisson distribution with Pearson's X² as an estimate of the scale parameter, and (3) a Poisson distribution with over-dispersion estimated using the deviance. The analysis of the raw data and log …