Agronomy and Crop Sciences Commons^™

Manure Matters, Volume 8, Number 1, Bahman Eghball, John Gilley

Manure Matters (newsletter)

Phosphorus Risk Assessment Index Evaluation Using Runoff Measurements

Published by University of Nebraska – Lincoln’s Livestock Environmental Issues Committee. Manure and composted manure are valuable and renewable resources that can be effectively utilized for crop production and soil improvement. However, runoff from cropland areas receiving manure or compost may contribute to increased phosphorus (P) in streams and lakes. The main factors controlling P movement in surface runoff are transport (runoff and erosion) and source factors such as manure or fertilizer application method and rate, and soil P test level. Elevated soil P levels may result from application of manure at …

Manure Matters, Volume 8, Number 3, Charles S. Wortmann

Manure Matters (newsletter)

How much can you pay to have manure applied to your land?

Livestock feeders often need more land for manure application to avoid excessive buildup of soil phosphorus. In some cases, they request payment to reduce transport costs. When is manure a good buy for crop production?
Manure supplies the full complement of nutrients needed by crops and often helps to improve soil biological and physical properties such as the rate of water infiltration. Because of these soil improvements, crop yield is often more with manure application than with fertilizers.
One way of estimating the value of manure is to …

Manure Matters, Volume 8, Number 2, Christopher G. Henry, Dennis D. Schulte

Manure Matters (newsletter)

Assessing Odor Risk

Odors from animal production operations are a major concern in rural communities. Pressure from the public and the potential impact on the rural economy has caused strong emotional conflicts. Currently livestock producers and urban planning officials have few tools to objectively evaluate scientifically based setbacks between livestock operations and residential areas. Conversely, livestock producers have few tools available to them to demonstrate how odor control technologies can reduce the risk potential of odor incidents.

Recognizing this concern in Minnesota, the Minnesota Legislature provided funds to their University to develop a tool to help predict offsite odor movement …

Manure Matters, Volume 8, Number 9, Richard Deloughery, Marty Link

Manure Matters (newsletter)

Interpreting Test Reports of Ground Water Monitoring Wells at Livestock Waste Control Facilities

Some livestock waste control facilities that are required to have an operating permit by the Nebraska Department of Environmental Quality (NDEQ) are also required to install ground water monitoring wells adjacent to the waste control facility. Ground water monitoring requirements are decided on site-specific considerations. Generally, ground water monitoring may be required where the depth to water is shallow, sediments are sandy, the livestock facility is located in a public water supply’s Wellhead Protection Area, or any combination of these and other factors listed in Chapter 13 …

Manure Matters, Volume 8, Number 8, Richard R. Stowell, Christopher G. Henry

Manure Matters (newsletter)

The Economic Potential of Methane Recovery for Swine Operations: Projected Impacts of Various Public-Policy Scenarios

Economic analyses were performed on anaerobic digestion of manure from finishing operations. The main factors considered were herd size (1,000 head; 3,500 head; and 10,000 head) and method of financial support provided (cost-share program, no-interest loans, tax subsidies, and subsidized electrical sales).
Installation of a digester system is a significant investment that is currently very difficult to justify economically to Nebraska producers based upon consideration of readily quantifiable income and expenses, regardless of farm size. Swine finishing operations looking to invest in this technology would …

Manure Matters, Volume 8, Number 7, J. David Aiken

Manure Matters (newsletter)

Property Valuation May Be Reduced by Proximity to Livestock Operation

In Nebraska, land and buildings are valued at their fair market value for purposes of property taxation. Residential and commercial real estate is valued at 92-100% of actual value (i.e. farm market value) and agricultural real estate is valued at 74-80% of actual value. NRS 77- 5023(3). Fair market value for property tax valuation purposes may be determined by (1) comparative sales, (2) income or (3) cost. NRS 77-112. In Livingston v Jefferson County Board of Equalization, 10 Neb App 934 (2002), the Nebraska Court of Appeals ruled that …

Manure Matters, Volume 8, Number 6

Manure Matters (newsletter)

Comprehensive Nutrient Management Planning

‘Tools’ for growing season nitrogen management. The pre-sidedress nitrate test, the chlorophyll meter, and the corn stalk nitrate test are three ‘tools’ that are available to farmers and their advisors to improve nitrogen management, both environmentally and economically. To help participants in the 2001 CNMP program become familiar with these tests, we helped them conduct these tests on their manured fields. Most of the manure had been applied without calibrating the spreader or testing the manure.

Manure Matters, Volume 8, Number 5, Charles A. Shapiro, Charles S. Wortmann, Richard Deloughery

Manure Matters (newsletter)

Manure testing: what to request?

Manure testing is necessary to make optimum use of manure while protecting water resources. The Manure Sample Submission Form requests information required for reliable interpretation of the results.

“Burn Down” Management Of Winter Cereal Cover Crops For No-Tillage Burley Tobacco Production, Robert C. Pearce, David C. Ditsch, Jack M. Zeleznik, Wade Turner

Agronomy Notes

Recent developments in the design of no-till transplanters and significant improvements in weed control have made no-till tobacco production a feasible option for burley tobacco growers. No-till production reduces soil erosion when tobacco is grown on sloping land. This helps maintain the long term productivity of the soil and may provide the grower with more options for crop rotation, by allowing sloping land to be utilized for tobacco production.

Phosphorus Soil Test Change Following The Addition Of Phosphorus Fertilizer To 16 Kentucky Soils, William O. Thom, James E. Dollarhide

Agronomy Notes

When applying phosphorus to soils it is important to know how much the soil test P changes with the addition of various rates. Soils are different in how they respond to varying rates of application, and only limited information is available for Kentucky soils.

Response Of Lowland Rice Plants To Simulated Insect Defoliation In West Africa, I. O. Oyediran, E. A. Heinrichs

Department of Entomology: Faculty Publications

Field experiments were conducted to investigate the impact of simulated insect-caused defoliation on irrigated rice. Defoliation levels tested were 0% (control), 25% defoliation at 21 days after transplanting (dat), 25% defoliation at 41 dat, 25% defoliation at 21 and 42 dat, 50% defoliation at 21 dat, 50% defoliation at 42 dat, 75% defoliation at 21 dat, 75% defoliation at 42 dat, 75% defoliation at 21 and 42 dat, 100% defoliation at 21 dat, and 100% defoliation at 21 and 42 dat. Tiller height, total number of tillers, percent panicle-bearing tillers, weight of 100 grains, and grain yields were recorded. The …

Ec02-103 Nebraska Fall-Sown Small Grain Variety Tests, 2002, Lenis Alton Nelson, David P. Baltensperger, Robert N. Klein, Roger Wesley Elmore, P. Stephen Baenziger, Todd Campbell

University of Nebraska-Lincoln Extension: Historical Materials

This circular is a progress report of variety trials conducted by personnel of the Agronomy Department and the South Central, West Central and Panhandle Research and Extension Centers and their associated agricultural laboratories. Conduct of experiments and publication of results is a joint effort of the Agricultural Research Division and the Cooperative Extension Service. Tests were supported in part by fees paid by commercial seed companies and the Nebraska Wheat Board. The 2002 estimated winter wheat yield for Nebraska was a 32 bushels per acre from 1,450,000 harvested acres. The total production of winter wheat for the state was 46,400,000 …

Stripping Burley Tobacco Into Grades, Gary K. Palmer

Agronomy Notes

Stripping burley tobacco into different grades has been a controversial topic for many years. The one-price years in the mid to late 80’s provided no incentive to the producer to strip into the appropriate grades. However, with the advent of contracting in the year 2000, many companies are suggesting four grades but still get a high percentage of three-grade tobacco. Tobacco companies can utilize a small percentage of mixed stripped tobacco, but the handling characteristics of the four stalk positions differ substantially during processing. As the companies make their blends, they look for specific characteristics that differ from grade to …

Breaking Seed Dormancy In Three Poaceae Species, Heidi Jo Larson

Electronic Theses and Dissertations

Seed dormancy is a major impediment to germination testing in seed testing laboratories. Dormant seeds are alive but do not germinate under conditions favorable for germination of non-dormant seeds of the same species. Dormancy in many p􀊆ant species can be broken using a single ·treatment or a combination of treatments. Treatments commonly used are light or dark, various temperature regimes, prolonged exposure to cold treatments (pre-chilling), and the use of growth hormones or other chemicals. Three Poaceae species, winter wheat (Triticum aestiivum), prairie drop seed V (Sporobolus heterolepis), and prairie cordgrass (Spartina pectinata), were the subject …

Letter From The Dean, Gregory J. Weidemann

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Identifying Safety Strategies For On-Farm Grain Bins Using Risk Analysis, Raymond S. Avery, Dylan P. Carpenter, Thomas A. Costello

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

The potential for grain bin accidents exists each year on Arkansas farms and farms across the nation. The trend toward increasing utilization of on-farm grain drying and storage could lead to an increase in grain bin accidents. The sharp contrast between a safe, efficient operation and one that leads to injury or death can be represented as sets of farmer-decisions and subsequent chance events. A model was constructed to define the risk associated with grain bin entry and in-bin activity so that safety interventions could be identified and implemented to reduce the probability of injury and death. A survey was …

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 3 2002, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

The Influence Of Storing High Moisture-Content Rough Rice On Milling Quality, Julita M. Manski, Terry Siebenmorgen

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

The objective of this research was to determine the influence on drying characteristics of storing high-moisture content (MC) rough rice under various conditions and durations before drying. Two cultivars of rice, 'Bengal', a medium-grain cultivar, and 'Cypress', a long-grain cultivar, were used. The MC of 'Bengal' was 24.8%1 and that of 'Cypress' was 20.4% at harvest. Immediately after harvest, drying runs were performed with samples of both cultivars under two drying air conditions: one at 51.7°C (125°F) and 25% relative humidity (RH), and the other at 60°C (140°F) and 17% RH. Storage treatments using the high MC rice were also …

Bradyrhizobium Japonicum And Soybean Symbiotic Response To Glyphosate In Glyphosate-Tolerant Soybeans, Jodie M. Scheele, C. Andy King, Marilynn K. Davies, Larry C. Purcell

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Soybean (Glycine max) grain contains approximately 40% protein and 6.5% nitrogen (N) on an elemental basis. Therefore, the plant requires an abundant N supply throughout its life cycle, and symbiotic N fixation of soybean with Bradyrhizobium japonicum provides 40 to 85% of the soybean N. Although soybean cultivars have been genetically engineered to withstand the herbicide glyphosate, B. japonicum grown in culture is sensitive to glyphosate. We hypothesized that glyphosate applied to glyphosate-tolerant soybean would inhibit nodulation by B. japonicum unless B. japonicum could also be selected for glyphosate tolerance. Cultures of B. japonicum were challenged with sublethal doses of …

Declared Plant Control Handbook Recommendations For The Control Of Declared Plants In Western Australia, John R. Peirce, Rachael A. Pratt

Biosecurity published reports

Sixth Edition.

Reviewed October 2005.

Plants may be "declared" by the Agriculture Protection Board under the Agriculture and Related Resources Protection Act 1976.If a plant is declared, all landholders are obliged to control that plant on their properties. Declarations specifies a category, or categories, for each plant according to the control strategies or objectives which the Agriculture Protection Board believes are appropriate in a particular place.

Among the factors considered in categorising declared plants are:

* the impact of the plant on individuals, agricultural production and the community in general,

* whether it is already established in the area, and …

Analysis Of Genetic Variability Of Quinoa (Chenopodium Quinoa Wild.) Germ Plasm Around Lake Titicaca, Milton Víctor Pinto Porcel

Theses and Dissertations

With the goal of analyzing the genetic variability of quinoa (Chenopodium quinoa Willd) germ plasm around Lake Titicaca, which is conserved in the National Bank of High Andean Grains of the PROINPA Altiplano Regional Foundation, the agromorphological behavior of 432 quinoa samples from the surrounding area (both Bolivian and Peruvian) were characterized and evaluated. This activity occurred at agricultural step 99/2000 of Belén Agricultural Station (16°1' South by 68°42' West), with the San Andrés Higher University Faculty of Agronomy, which because of its proximity to the lake represents climate conditions like those of the studied material's origin. In order to …

National And Regional Assessments Of Crop Yield Trends And Relative Production Efficiency : Theme 5.1. Land Use Change, Productivity And Diversification, David Stephens

Agriculture reports

National and regional assessment in Australia of relative production (yield) efficiency for wheat and other cereals providing estimates of biological production potential based on seasonal climatic conditions, compared with actual production values for selected historical dates between 1982 and 2000.

Genetic Analysis Of Feed Quality And Seed Weight Of Sorghum Inbred Lines And Hybrids Using Analytical Methods And Nirs, C. Hicks, M. R. Tuinstra, Jeffrey F. Pedersen, F. E. Dowell, K. D. Kofoid

Department of Agronomy and Horticulture: Faculty Publications

Eight lines of grain sorghum and their F1 hybrids were evaluated for contents of crude protein (CP), fat (FAT), and starch (STA); protein digestibility (PD); and in vitro dry matter disappearance (IVDMD). The effect of seed weight (SW) on these traits and the potential use of near infrared reflectance spectroscopy (NIRS) to predict them also were investigated. The male lines included three normal-seeded lines (TX2737, TX435, and P954063) and two largeseeded lines (PL-1 and Eastin1). The female lines included commonU.S. seed parent lines (Wheatland, Redlan, and SA3042). The lines and their hybrids were grown under dryland conditions at Kansas State …

Combinatorial Control Of Yeast Fet4 Gene Expression By Iron, Zinc, And Oxygen, Brian M. Waters, David J. Eide

Department of Agronomy and Horticulture: Faculty Publications

Acquisition of metals such as iron, copper, and zinc by the yeast Saccharomyces cerevisiae is tightly regulated. High affinity uptake systems are induced under metal-limiting conditions to maintain an adequate supply of these essential nutrients. Low affinity uptake systems function when their substrates are in greater supply. The FET₄ gene encodes a low affinity iron and copper uptake transporter. FET₄ expression is regulated by several environmental factors. In this report, we describe the molecular mechanisms underlying this regulation. First, we found that FET₄ expression is induced in iron-limited cells by the Aft1 iron-responsive transcriptional activator. Second, FET …

Creation Of Three Nutritional Mixes Based On Amaranth (Amaranthus Caudatus) And Other Andean Crops For School-Aged Children (Cochabamba-Bolivia), Sandra Carola Delgadillo Barriga

Theses and Dissertations

In Bolivia we have three very valuable Andean grains: amaranth (Amaranthus caudatus), quinoa (Chenopodium quinua), and canihua (Chenopodium pallidicaule), which combined with cereals and legumes can become a complete and balanced food in order to combat the malnutrition that is so widespread in our region. In this study, various nutritional mixes were formulated, based on amaranth and other Andean crops, and the three best were chosen according to nutrition, palatability, and cost. They were: Andean Baby Food, Mixicereal, and Amaranth Cookie, which have an amino acid complement between 79% and 100% and give satisfactory amounts of protein, energy, and minerals …

Elaboration Of Noodles, Enriched With Kidney Bean In The Communities Of Cuambo And The Rinconada Of The Canton Ibarra Province Of Imbabura, Irma Meneses

Theses and Dissertations

Currently in Ecuador, the evil and deteriorated nourishment constitutes a serious problem influenced by the high to prevail of malnutrition that each day is aggravated. Therefore it is important to know the adequate utilization of the regional products and new technological alternatives that help to reduce this problem. The accomplished investigation pipe as objective to elaborate noodles craftsmen enriched with kidney bean load fine to contribute to improve the quality protein of the diet in the communities of Cuambo and the Corner; this study was effected after accomplishing a consumption and production diagnosis of foods by the Institute BENSON. The …

Efficacy Of Sucker Control Method And Effect Of Topping Height On Axillary Bud Growth In Dark Fire-Cured Tobacco, Leslie Thompson

Masters Theses & Specialist Projects

The removal of terminal buds (topping) and sucker control are two practices that have an impact on yield and quality of dark tobacco (Nicotiana tabacum L.). Topping breaks apical dominance and encourages the growth of axillary buds (suckers). Following topping, growth regulator chemicals known as suckercides are commonly used to prevent axillary bud growth. Research has demonstrated that topping time, height, and sucker control method influence the quality and yield of the final product. Delaying topping past a critical developmental stage has been shown to reduce leaf yield. Topping height varies among geographical regions with most dark tobacco producers topping …

Efficacy Of Soybean Herbicides On Annual Morninglory, Dawn Oveson

Masters Theses & Specialist Projects

Field experiments were established in 2000 and 2001 at the Agricultural Research and Education Complex in Bowling Green, Kentucky to evaluate herbicide efficacy on annual morningglory (Ipomoea spp.) species and other weeds. A randomized complete block design was utilized in each study with each treatment being replicated three times. Plots consisted of four 76 cm rows, 9.1 m in length. The two center rows of each plot were treated, with the outside rows of each plot serving as a weedy check. Crop response, weed control, and grain yield data were collected. Four different experiments were conducted. Two experiments utilized treatments …