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Chicken Waste As A Nutrient Source For Red Potatoes (Solanum Tuberosum) In A Hydroponic System, Allison Houtz, David Foster

Honors Projects and Presentations: Undergraduate

The purpose of this study was to determine the viability of growing potatoes hydroponically with chicken waste as an alternative, more sustainable nutrient source in substitute of fish waste in an aquaponics system. Hydroponics is a growing form of sustainable agriculture which utilizes a water-based method to deliver nutrients to plants. Hydroponics is a preferable alternative as it uses 90% less water than traditional agriculture, and does not contribute to common agricultural issues such as land degradation. A popular form of hydroponics is aquaponics, which combines hydroponic technology with aquaculture. The fish waste in this system is the sole source …

Returns To R&D Investment Of Dafwa: Benefit Cost Analysis, 2005-2006, Nazrul Islam

Bulletins 4000 -

The primary outcome or objective of the projects that are assessed, is to increase the market competitiveness and profitability of agri-industry.

The Use Of Red Mud/Gypsum To Reduce Water Pollution From Sandy Soils Used For Vegetable Production, Ian Mcpharlin, W. J. Robertson, R. C. Jeffery

Research Reports

An important domestic and export vegetable industry is located on the sands of the Swan Coastal Plain (SCP) in Western Australia. The total value of the vegetable industry on the SCP was estimated at $90M in 1996/7 or about 50% of the total value of the industry. This vegetable production has been located on good quality sands such as the Spearwood and yellow Karrakatta sands, close to the coast, since the 1950s. However in recent years competition for this land for urban and industrial use has forced vegetable production onto soils with poorer water and phosphorus retention capacity such as …

Agriculture And The Western Australian Economy : Value Added Contribution Of Agricultural Commodities, Nazrul Islam

All other publications

No abstract provided.

B843: The Ecology, Economics, And Management Of Potato Cropping Systems: A Report Of The First Four Years Of The Maine Potato Ecosystem Project, A. Randall Alford, Francis A. Drummond, Eric R. Gallandt, Eleanor Groden, David A. Lambert, Matt Liebman, Michele C. Marra, Jeffrey C. Mcburnie, Gregory A. Porter, Bacilio Salas

Bulletins

The bulletin reports on the first four years of the Maine Potato Ecosystem Project, a long-term, multidisciplinary study of alternative crop management strategies. The study site is a 15-acre tract on the northern boundary of the University of Maine's Aroostook Farm in Presque Isle, Maine, divided into 96 main plots that are grouped into four blocks. Each block is an area where soil survey data show similar soil characteristics. Thus, given the same production inputs, the crop output is expected to be the same on each plot within a block. Within each block there are 24 plots to which the …

Pesticide Use On Crops In Nebraska - 1987, Maurice Baker, Nancy Peterson, Shripat T. Kamble

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the third and most comprehensive study of pesticide use on crops in Nebraska. The first was completed in 1978 and the second one in 1982. The first study indicated that approximately 25 million pounds (11.34 million kg) of active ingredients were used on the major crops in Nebraska. This increased to approximately 30.2 million pounds (13.7 million kg) in 1982. The USDA requires accurate information to meet their responsibilities. Thus, this survey was undertaken to determine: 1) the use of pesticides on crops, pasture and rangeland and 2) to identify pest management practices.

Leaf Diffusive Resistance And Relative Water Content As Indications Of Varietal Sensitivity To Drought In Potatoes, Darlene A. Wilcox, Richard A. Ashley

Storrs Agricultural Experiment Station

No abstract provided.

B753: The Uptake Of Nutrients By Katahdin Potatoes As Influenced By Soil Moisture Regimes And Rates Of Fertilization, Gurbachan Singh Kalra, Roland A. Struchtemeyer

Bulletins

In Aroostook County, Maine, where the annual average rainfall is 35-40 inches, it is generalized by many that moisture is not a limiting factor in potato production. Weather data for Aroostook do, however, show frequent periods of low rainfall during the growing season, and these periods do cause temporary moisture deficiencies in the crop. Struchtemeyer, based on irrigation research in Maine, showed that the potato plant needs approximately 1 inch of water per week during the growing season. From the 1936 to 1955 Maine Weather Records, Pullen and Schrumpf (23) found that about 70 percent of the time, less than …

Survey Of Potato Losses In The Field, James P. Fallon

Journal of the Department of Agriculture, Western Australia, Series 4

A RELATIVELY large proportion of the potatoes grown in Western Australia are below Grade 1 standard.

Some are left in the field at harvest while others are rejected during grading operations.

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

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

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). Growers must decide each year whether the increase in yield and tuber maturity gained by delaying harvest will be offset by the risk of impaired tuber quality due to scab or possible serious field frost damage. Information about the rate at which tubers are developing by various dates is essential …

Reduced Ascorbic Acid Content Of Potatoes Grown With And Without Straw Mulching And Irrigation In Eastern Nebraska, H. O. Werner, Ruth M. Leverton, Mary R. Gram

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Potatoes harvested from home gardens and in commercial early-producing fields in the Midwest are an important low-cost source of ascorbic acid from late June into September. The major portion of the early commercial crop in Nebraska (harvested mostly in August) is produced with irrigation. Straw or litter mulching is a well established practice in the nonirrigated garden and farm potato patches. The value of these cultural methods for increasing yield is well known, but prior to this study little was known about their influence on the ascorbic acid content of the tubers, or about the persistence of any such influence …

Pink Rot Of Potatoes Caused By Phytophthora Erythroseptica Pethyb., R. W. Goss

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

During the summer of 1943 reports were received of rotted tubers occurring in fields of early potatoes in central Nebraska. An estimated 10 per cent of the tubers were found rotted in some fields on August 5. In November and December of the same year the late-producing area of western Nebraska reported the occurrence, at harvest and in storage, of tuber rots differing from those previously recorded for that area. Specimens appeared similar to those observed during the summer in central Nebraska. Isolations were made and pathogenicity tests were conducted both on tubers and growing plants to study the influence …

Fifty Years Of Achievement In Agricultural Investigation, R. T. Prescott

Nebraska Agricultural Experiment Station: Historical Circulars

In Nebraska, a hustling frontier state in 1887, the legislature hesitated not at all in taking advantage of the provisions of the Hatch Act, and now that fifty years have elapsed since the Station was founded, seventy-five years since the Land Grant College Act was passed and the U. S. Department of Agriculture established, and almost twenty-five years since the Agricultural Extension Service was added, it seems worth while to present a general summary of achievement within the state. The main object will be to show some of the important things that have been learned through the investigations of the …

Wound Healing In Potatoes (Triumph Variety) As Influenced By Type Of Injury, Nature Of Initial Exposure, And Storage Conditions, H. O. Werner

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Tubers of the Triumph variety of potatoes, the one most extensively grown in western Nebraska, are more susceptible than those of other varieties to the various types of injury that occur at harvest time. This greater susceptibility is chiefly the result of long stolons, unusual tenderness of skin, and ease with which the tubers crack. The two latter characteristics have been accentuated by the custom of late planting adopted generally throughout the region in recent years. Many of the difficulties could be avoided by growing another variety. However, as there now seems to be no other variety as well adapted …

Cellar And Cold Storage Of Sound And Mechanically Damaged Triumph Seed Potatoes, H. O. Werner

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The object of these experiments was to determine with practically sound, whole potatoes the effect of cold storage during various portions of the storage period and continual cellar storage upon: (a) the weight losses during numerous intervals of storage period; (b) the condition of the potatoes at the end of the storage period in June; and (c) the relative seed value of the various lots of potatoes as determined by field experiments.

Tuber Development In Triumph Potatoes As Influenced By Time Of Planting On Dry Land In Northwestern Nebraska, H. O. Werner

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Triumph potatoes were planted on four different dates during six years in order to determine the best planting date on dry land in northwestern Nebraska, where this variety is grown primarily for seed. Features considered in comparing the merits of these planting dates were: stand of plants; vine growth; disease prevalence; time of plant maturity; number, size, and shape of tubers; cracking at harvest time; prevalence and severity of common scab; total yields and yields of various grades of potatoes from various harvesting dates; weight loss in storage; and duration of the dormant period. The experimental aspects dealing with the …

Infection Experiments With Spindle Tuber And Unmottled Curly Dwarf Of The Potato, R. W. Goss

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

It is probable that more than one insect species are capable of spreading some of the potato virus diseases. This conclusion was also indicated by repeated observations in the dry-land section of western Nebraska. While aphids are abundant and are probably the chief vectors of potato virus diseases in the more humid sections of the country, they are usually scarce in the western upland plains area and are not present in large enough numbers to account for the rapid spread of spindle tuber and unmottled curly dwarf which sometimes occurs. It was therefore considered advisable to determine the common potato …

The Symptoms Of Spindle Tuber And Unmottled Curly Dwarf Of The Potato, R. W. Goss

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The differentiation of the virus diseases of the potato on the basis of symptoms is an important but difficult phase of the virus problem. A knowledge of the variation in symptoms due to environmental factors is necessary both in investigational work and in the practical application of our knowledge to the control of these diseases in the field. A fairly comprehensive knowledge of the masking effect of certain environmental factors upon the symptoms of the mosaic group has been obtained through the work of various investigators. Considerably less information is available concerning the effect of environment upon the symptoms of …

Further Studies On The Effect Of Environment On Potato Degeneration Diseases, R. W. Goss, George L. Peltier

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The identification of potato degeneration diseases in the field is extremely difficult owing to the number of diseases now described, their manifestation on different varieties, the combination of several diseases on the same plant, and the further splitting up of these combinations into separate diseases. The influence of environmental factors in intensifying or inhibiting the symptoms of these diseases also increases the difficulty of diagnosis. In the present investigation the effect of environmental factors has been studied with the purpose of determining the limiting factor or factors in the masking of the symptoms, in the hopes of simplifying a complex …