Search
Now showing items 1-7 of 7
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 ...
By-plant Prediction of Corn (Zea mays L.) Grain Yield Using Height and Stalk Diameter
(Oklahoma State University, 2011-05-01)
Current methods for determining midseason nitrogen (N) rates in corn have used normalized difference vegetation index (NDVI), and in some cases, plant height and intra-specific plant competition. Another parameter that can ...
By-plant Sidedress Nitrogen in Corn (Zea Mays L.) Based on Plant Height and Normalized Difference Vegetation Index
(Oklahoma State University, 2012-07-01)
Current methods of applying nitrogen (N) fertilizer do not treat small scale variability that is known to exist. Variations in corn grain yield can be found from one plant to the next. With knowledge that yield potential ...
Analysis of the coefficient of variation of remote sensor readings in winter wheat, and development of a sensor based mid-season n recommendation for cotton
(2008-05)
Scope and Method of Study: For chapter one, Hard red winter wheat (Triticum aestivum L.) experiments were conducted to better understand how the coefficient of variation (CV) could be used to better mid-season N rate ...
Effects of Plant Population and Nitrogen Rate on Spectral Properties and Grain Yield of Winter Wheat (Triticum aestivum L.)
(Oklahoma State University, 2011-07-01)
Predicted grain yields enable producers to more accurately apply the needed top-dress nitrogen (N) which leads to improved N use efficiencies and increased profit. This study was implemented to correlate and determine the ...
Evaluating plant density in grain sorghum using GreenSeeker
(2021-05)
Grain Sorghum (Sorghum bicolor(L)Moench,) is a high yielding, drought tolerant crop commonly grown in Oklahoma and the southern Great Plains. Increased knowledge of agronomic production practices, such as planting densities, ...
Evaluation of the OSU Ndvi Pocket Sensor
(Oklahoma State University, 2012-05-01)
There are methods to increase nitrogen use efficiency through optical sensor based nitrogen application; however, the sensors are expensive and cost prohibitive to farmers in the developing world. This study evaluated a ...