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Relationship Between Coefficient of Variation Measured by Spectral Reflectance and Plant Density at Early Growth Stages
(Oklahoma State University, 2004-12-01)
Nitrogen use efficiency (NUE) is estimated to be 33% throughout the world, current precision nitrogen application through precision sensing methods can improve NUE to a level of 50%. Statistical analysis of sensor data has ...
Effect of Nitrogen on Rhizobacteria Associated with Wheat Shoot Productivity
(Oklahoma State University, 2012-05-01)
The effect of nitrogen fertilizer on rhizobacteria associated with wheat (Triticum aestivum) shoot productivity was determined by using pyrosequencing technique. Easpur Loam soils was treated with 112-kg/ha N or left ...
Starter Fertilizer Management for Corn and Soybean in the Southern Plains
(Oklahoma State University, 2012-12-01)
Early plant growth and grain yield may be depressed in no-till cropping systems compared to conventional tillage because of the poor nutrient availability early in the growing season. Oklahoma no-till corn (Zea mays L.) ...
Determination of Nitrogen Availability From Animal Manure Amended Soils
(Oklahoma State University, 2007-07-01)
This study was conducted to evaluate the effects of long term manure application on soil properties, winter wheat, grain yield, and to determine the N availability of land applied manure. Three different manure sources and ...
Remote sensing application in biomass crop production systems in Oklahoma
(2013-12)
This study was conducted to evaluate the combined effects of nitrogen and cropping systems on biomass yield and quality and to describe the spatial variation of biomass yield, soil carbon and nitrogen within a switchgrass ...
Investigating avenues of increasing nutrient use efficiency in soybeans and winter wheat in Oklahoma
(2021-05)
A large part of the land-grant mission is to increase production and sustainability in growing crops to feed and clothe our world. One aspect that allows us to get closer to obtaining our goal is to increase our nutrient ...
Maize (Zea-maize L.) Grain Yield Respond to Nitrogen Applied at Different Distances Away from the Row
(Oklahoma State University, 2010-05-01)
A one percent global increase in nitrogen use efficiency would be worth approximately 1 billion dollars (Raun and Johnson, 1999). It is thus important to apply nitrogen (N) midseason or split applied so as to improve ...
Geologic Controls on Nitrogen Isotopes in Marine Black Shale: a Case Study of the Woodford Shale, Anadarko Basin, Oklahoma
(Oklahoma State University, 2013-12-01)
Determining depositional environments of organic-rich black shale can enhance the identification of hydrocarbon producing intervals. Several methods have been utilized to identify depositional environments; however, for ...
Controls on Bud Activation and Tiller Initiation in Tallgrass Prairie: the Effect of Light and Nitrogen
(Oklahoma State University, 2010-12-01)
Chapter 1: Perennial grass populations in tallgrass prairie ecosystems are maintained primarily through vegetative outgrowth from their belowground bud banks. Resources in these ecosystems that have been found to limit ...
In situ sensing of leaf cuticular wax, pecan yield and pecan leaf nitrogen concentration
(2012-07)
Scope and Method of Study: