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Articles 1 - 10 of 10
Full-Text Articles in Earth Sciences
What Happened With No-Till In 1988, Morris J. Bitzer, Robert L. Blevins, Wilbur Frye
What Happened With No-Till In 1988, Morris J. Bitzer, Robert L. Blevins, Wilbur Frye
Soil Science News and Views
No-till (NT) received some bad publicity in 1988 in Kentucky and throughout the Midwest,especially during the early part of last summer's drought. Some farmers found that corn yields were lower with NT than with conventional tillage (CT). However, others observed that the NT corn recovered faster and grew better than CT corn following the rains. Data from Kentucky and Nebraska tend to support this latter observation.
Tests With A Product Having Alleged Value For Increasing Plant Available Water In Soil, Gale Dunn
Tests With A Product Having Alleged Value For Increasing Plant Available Water In Soil, Gale Dunn
Soil Science News and Views
Currently, there are a number of products being marketed for agricultural and horticultural use that have tremendous water absorbing properties. Some of these products are polyacrylamides which are synthetic compounds with chemical and physical properties which allow them to absorb large amounts of water relative to their dry weights. The implied advantage for use of such materials is that they can absorb more water than the soil itself, and acting like a sponge, hold more plant available water in the root zone.
Effectiveness Of Tile Drainage On Karnak Silty Clay Soil, Gerald R. Haszler
Effectiveness Of Tile Drainage On Karnak Silty Clay Soil, Gerald R. Haszler
Soil Science News and Views
Artificial drainage of agricultural lands has been practiced for centuries. Earlier techniques devised were open ditches to drain the excess water. The widescale development of subsurface tile drains began with the production and availability of clay tiles. Today, corrugated plastic pipe is the most popular and efficient way to install subsurface drainage lines. The objective of agricultural soil drainage is the removal and disposal of excess water from the rooting zone in order to improve soil productivity. The 1971 Soil Conservation Service (SCS) handbook estimated that 130 million acres or about one-third of all crop land in the United States …
Control Of Nitrate Leaching With Winter Annual Cover Crops, Daniel Mccracken
Control Of Nitrate Leaching With Winter Annual Cover Crops, Daniel Mccracken
Soil Science News and Views
Public attention and Federal legislation have focused recently on the contamination of groundwater by nitrate. Seeking to establish standards for safe drinking water, the Federal Government has set the maximum concentration for nitrate (as nitrogen) at 10 parts per million. In large areas of the Great Plains, this value is now commonly exceeded in well water. The limited data from Kentucky appear to indicate that excessive nitrate concentrations are not as widespread in Kentucky water supplies as they are in the water of states more heavily involved in grain production and more dependent on shallow wells for supply. One of …
Fertilizer Value Of Cattle Dunghills In A Pasture Field, Kenneth L. Wells, Steve D. Davis
Fertilizer Value Of Cattle Dunghills In A Pasture Field, Kenneth L. Wells, Steve D. Davis
Soil Science News and Views
There were nearly 2.5 million cattle and calves in Kentucky in 1988. Most of these were maintained under pastureland conditions. Nutrients taken up by pasture plants, consumed by cattle, and re-cycled back onto fields by fecal and urine excretions can be a major source of nutrients for maintaining pastureland productivity. In order to estimate the value of this under grazing conditions, observations were made on a pasture field in Casey County, Kentucky, following stocking of the field with cattle.
Will Liming Acid Soils Now Be Adequate For Spring Needs?, Kenneth L. Wells, J. L. Sims
Will Liming Acid Soils Now Be Adequate For Spring Needs?, Kenneth L. Wells, J. L. Sims
Soil Science News and Views
Each spring many farmers are faced with seeding forages, corn, and soybeans, and transplanting tobacco into acid soils. The choices are either to go ahead with planting and do nothing, don't plant, or to try some liming practice and hope that it works. The results from planting without doing anything may be disastrous or result in limited crop performance. While not planting is a viable option for some producers, most cannot afford this choice. The question most often faced is, "Will liming now do any good for this year's crop?"
Foliar Fertilization Of Burley Tobacco At Topping, Kenneth L. Wells, Kim D. Strohmeier
Foliar Fertilization Of Burley Tobacco At Topping, Kenneth L. Wells, Kim D. Strohmeier
Soil Science News and Views
Many burley growers follow the practice of applying 1-2 gallons/A of liquid fertilizer to their tobacco crop by mixing it with their sucker control chemical and spraying the combined mixture on the crop soon after topping. This practice is thought to improve yields. However, previously reported testing of this practice by the University of Kentucky College of Agriculture indicated that it did not improve yields.
Managing Soils For Optimum Crop Production, Kenneth L. Wells
Managing Soils For Optimum Crop Production, Kenneth L. Wells
Soil Science News and Views
The major resources which must be manipulated to develop a farm operation are LAND, LABOR, CAPITAL, and MANAGEMENT. Of these four broad categories of resources, LAND is the one which imposes constraints which ultimately determine the productive capacity of the individual farming system developed. This is because land is a fixed resource from the standpoint of the nature and amount of it available for developing a specific farming system. In this regard, the allocation of LABOR, CAPITAL, and MANAGEMENT should be directly linked to LAND productive capability in order to economically optimize the farming system developed. In other words, the …
Handling Leftover Spray Mixtures And Rinsates, James Martin, Monroe Rasnake, Doug Johnson
Handling Leftover Spray Mixtures And Rinsates, James Martin, Monroe Rasnake, Doug Johnson
Soil Science News and Views
Pesticide applicators are faced with the issue of what to do with leftover spray mixtures and rinsewater from cleaning sprayers or other equipment involved with the mixing and application of pesticides. There is increasing concern that releasing these diluted pesticides around such places as the workshop and loading or mixing areas could be a potential risk to human health and the environment.
New Opportunities For Science Students In Agronomy, Wilbur Frye
New Opportunities For Science Students In Agronomy, Wilbur Frye
Soil Science News and Views
High school students interested in science and looking for a field of study that will prepare them for a rewarding career will like the proposed new agronomy programs. The Agronomy Department at the University of Kentucky is preparing to offer undergraduate students three future-oriented options--Plant and Soil Management, Plant Science, and Soil Science. In designing these options, we tried to determine what agronomy students need to be prepared to do in a rapidly changing and highly competitive world of the 1990s.