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Now showing items 11-20 of 21
Using informative Bayesian priors and on-farm experimentation to predict optimal site-specific nitrogen rates
(2023-05)
Precise site-specific nitrogen applications will reduce excess nitrogen fertilizer run-off and have corresponding environmental benefits. Adoption of site-specific nitrogen application technology has been slow, and many ...
Long-term Prescribed Fire Does Not Alter Litter Decomposition and Bioavailable Nitrogen in Xeric Oak Forests
(Oklahoma State University, 2013-12-01)
The Cross Timbers is a patchwork of grassland, savanna, and xeric oak forest that stretch across Kansas, Oklahoma, and Texas. Historically a pyric ecosystem, burning of the Cross Timbers became infrequent. Currently, land ...
Mid-season Recovery to Nitrogen Stress in Winter Wheat
(Oklahoma State University, 2004-12-01)
Winter wheat yields are directly affected by the amount of nitrogen (N) that is available to them for growth. Past research has indicated that spring application of N is more effective than fall application for winter ...
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 ...
Impact of delayed nitrogen application in grain sorghum
(2021-05)
A majority of grain sorghum production occurs in the central to north west portion of Oklahoma, where the average annual rainfall is at or below 900 mm and precipitation events become less frequent. The environment conditions ...
Evaluation of management strategies for continuous forage production in central Oklahoma
(2021-12)
Forage production in the southern Great Plains is an important aspect of the agricultural industry because forage is used to feed livestock that produce many agricultural products that are consumed. A goal of agricultural ...
Effect of topdress N rate applied based on growing degree days on winter wheat (Triticum aestivum L.) grain yield
(2019-12)
The majority of in-season nutrient management decisions for numerous crops are based on subjective morphological scales. The objective of this study was to establish whether a numerical scale based on growing degree-days ...
Influence of dual top-dress nitrogen applications on winter wheat (Triticum aestivum L.) grain yield
(2021-05)
Winter wheat (Triticum aestivum) is commonly grown throughout Oklahoma and is notably the state's top cash crop. Nitrogen (N) is one of the most heavily applied nutrients in wheat by producers across the state as it is ...
I. Evaluation of seed treatments and nitrogen on soybean nodulation and grain yield.II. Influence of pre-plant nitrogen and phosphorus on winter wheat grain yield and quality
(2021-05)
Soybeans (Glycine max) are known to form symbiotic relationships with soil microbes and conduct biological nitrogen fixation (BNF). However, only 50-60% of the crop's nitrogen (N) requirement is met through this process. ...
Soil nitrogen storage and mineralization potential in a winter wheat system under long-term nitrogen fertilization
(2022-05)
In winter wheat systems, crop nitrogen(N) uptake is sourced primarily from inorganic N fertilization and N mineralization from soil organic matter(SOM). N mineralization is a dynamic N cycling process that relies on many ...