6,189 research outputs found
Optical shutter switching matrix
The interface switching systems are discussed which are related to those used in the Space Shuttle ground control system, transmission systems, communications systems, and airborne radar electronic countermeasure systems. The main goal is to identify a need that exists throughout the comprehensive information processing and communications disciplines supporting the Space Shuttle and Space Station programs, and introduce one viable approach to satisfy that need. The proposed device, described in NASA patent entitled 'Optical Shutter Switch Matrix', is discussed
Lightning current waveform measuring system
An apparatus is described for monitoring current waveforms produced by lightning strikes which generate currents in an elongated cable. These currents are converted to voltages and to light waves for being transmitted over an optical cable to a remote location. At the remote location, the waves are reconstructed back into electrical waves for being stored into a memory. The information is stored within the memory with a timing signal so that only different signals need be stored in order to reconstruct the wave form
Soil Testing: Improving Reliability
Late summer is a good time to check forage and row crop fields for possible nutritional problems and to make plans for fall soil sampling. Problem areas can be identified for selective sampling and the test results can be used to plan fertilizer and lime expenses for the next crop production season. Fields scheduled for tobacco, small grain and/or double cropping need to be sampled first in order to determine lime, phosphorus (P) and potassium (K) needs before fall application
Spring Nitrogen Management for Winter Wheat
Wheat producers commonly plan their nitrogen fertilizer management during winter months. The crop begins to break dormancy in many parts of the state in late February and early March and soon begins tillering and growing rapidly if nutrition is adequate. Nitrogen is the nutrient most often required and for which annual costs are the greatest for most wheat growers. Consideration of the following basic principles will help wheat producers improve the efficiency and effectiveness of their nitrogen fertilizer dollars
Intoxication and Removal from the Course of Employment: Ohio\u27s No-Fault Exception in \u3ci\u3ePhelps v. Positive Action Tool Co.\u3c/i\u3e
Fertilization Management in Double Cropping
Double crop systems are being widely adopted by grain and silage producers in Kentucky. The wheat-soybean grain intensive system accounts for nearly 750,000 acres of cropland in the state each year. Alternative silage systems for beef and/or dairy producers involve a fall seeded small grain (wheat, barley, triticale) that is harvested at an immature stage of growth. Immediately afterward a crop for silage (corn, grain sorghum) or grain (soybean, grain sorghum) is planted. When reduced and no-tillage management practices are used the timeliness of planting is improved and losses of surface soil moisture are minimized as the second crop starts growth. As two crops are to be harvested in a single season, fertilizer management is of considerable importance to double crop producers
On-Farm Field Research: Replicating Your Valid Comparison
On-farm research is motivated by a desire to learn more about a product/practice/system on land you manage. You may now have the tools (yield monitor, weighing grain cart, etc.) to accomplish on-farm research that generates information you can use in management decision-making. Your on-farm research should start with the design of a \u27\u27valid comparison , according to your research objective (Soil Science News & Views 26:01)
Use of Magnesium (Mg) for Crop Production in Kentucky
Magnesium (Mg) is an important element in the nutrition of plants and animals, although it has long been considered a secondary nutrient for plants. Nitrogen (N), phosphorus (P), and potassium (K) are primary\u27\u27 nutrients and are usually given the greatest consideration in crop fertility programs. However, as yield levels have risen, more attention has been directed towards Mg and other nutrient elements. Concern about hypomagnesemia (grass tetany) in ruminants (cattle, sheep) has led to particular concern about soil and plant Mg levels
Acid Rain: A Problem on Agronomic Crops and Soils in Kentucky??
Although the general issue of atmospheric pollution is complex, the image of beautiful lakes without aquatic life has focussed public attention on the acidity, or pH, of rainfall. Kentucky does receive acid rain (see map). This discussion will seek to define atmospheric acidity and its deposition and describe reported effects on agronomic crops and soils
Current Research on Soil Nitrate Testing for Corn in Kentucky
Concern has been expressed that growers do not have the slte-specific information they need for more efficient nitrogen (N) fertilizer management on a field-by-field basis. Soil testing has routinely been used to guide recommendations for phosphorus, potassium, and lime additions to individual fields, but effective soil N test procedures have long eluded soil scientists working in warm, humid regions with substantial winter rainfall. Now, recent research suggests that a new soil test procedure has some potential to guide fertilizer N applications for corn. The purpose of this report is to define the concept of soil nitrate testing; to describe how It is conducted for corn; and to review some of our latest research information
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