Agronomic Research Projects and
ProgressPrecision Agriculture
Oklahoma State University
| Current Graduate Students | |||
| 1 | Yumiko Kanke | ||
| 2 | Emily Rutto | ||
| 3 | Birehane Desta | ||
| 4 | Jerry May | ||
| 5 | Daniel Edmonds | ||
| 6 | Walsh, Olga | ||
| 7 | Guilherme Torres | ||
| 8 | Jacob Vossenkemper | ||
| 9 | Matthew Edmonds | ||
| 10 | Yesuf Assen | ||
| 2009 Planning Matrix | |||
| Journal Articles to be completed | Responsible | ||
| Jagadeesh, Bermudagrass Algorithm | Mosali, Kefyalew | ||
| Forage Production Systems (yield prediction-Lawles) | Tubana, Mack, Olga | ||
| By-Plant Yield Prediction | Martin, Arnall, Chung | ||
| Sorghum Yield Prediction | |||
| Soybean Yield Prediction | |||
| Pressing Information Needs | |||
| N Uptake in Wheat (over the entire cycle) 2 Varieties | Starr Holtz | ||
| N Uptake in Corn (over the entire cycle) 2 Hybrids | Starr Holtz | ||
| New Ideas/Projects | |||
| Improved methodology for foliar N application in Corn | |||
| Indexes for Improved Yield Prediction In Wheat and Corn (Sum of NDVI's, indirect soil Moisture measurement) | |||
| Sonar/Laser Methodology for measuring height in wheat and corn. | Pam Turner | ||
| Project | Crop | Student | |
| 1 | Use and Application of CV's for improved Prediction of Yield Potential with Added N Fertilization (Gemini) | Wheat and Corn | Arnall |
| 2 | Apollo Sufficiency (combined with Regional NUE Trial) | Corn | Freeman |
| 3 | RI NDVI versus RI Harvest, corn, using Chlorophyll meters, height, and NDVI | Corn | Arnall, Tubana, Chung |
| 4 | On Farm INSEY Trials (OFIT) evaluating Nitrogen Fertilization Optimization Algorithms (NFOA) for improved Nitrogen Use Efficiency | Wheat | Freeman |
| 5 | On Farm INSEY Trials (OFIT) evaluating Nitrogen Fertilization Optimization Algorithms (NFOA) for improved Nitrogen Use Efficiency | Corn | Tubana |
| 6 | 3-Point Variable Nitrogen Rate Applicator, Small Scale Evaluation of OSU-NFOA's | Wheat | Freeman, Teal |
| 7 | 3-Point Variable Nitrogen Rate Applicator, Small Scale Evaluation of OSU-NFOA's | Corn | Freeman, Teal |
| 8 | Effect of Growth Stage and Environment on estimated Response Indices using NDVI | Wheat | Chung |
| 9 | Green versus Red NDVI in Corn and Wheat | Wheat and Corn | Moges |
| 10 | Optimum field element size for maximum yields in winter wheat and corn using variable nitrogen rates | Wheat and Corn | Tubana |
| 11 | Applied Use of Calibration Stamps for Improved In-Season Fertilizer N Rate Recommendations | Wheat | Mack |
| 12 | Early Season NDVI Readings and Optimum Resolution for Predicting Corn Grain Yields, distance, by plant | Corn | Chung |
| 13 | By Plant Prediction of Corn Forage Biomass | Corn | Freeman |
| 14 | Corn On Farm INSEY Trials (OFIT) evaluating Nitrogen Fertilization Optimization Algorithms (NFOA) for improved Nitrogen Use Efficiency | Corn | Tubana |
| 15 | Influence of Sensor Angle and Height on Measured Plant Biomass and Yield Prediction | Corn | Moges |
| 16 | Evaluation of Corn Plant Height using Sonar for Improved Yield Prediction , 3 locs, V8, V10, VT | Corn | Tubana, Carol, |
| 17 | Use and Application of CV's for Improved NFOA's in Corn | Corn and Wheat | Raun |
| 18 | Extension of the Sensor Based Nitrogen Rate Calculator for use in Mexico, India, and China | Corn and Wheat | Raun |
| 19 | Web-Based Extension of Nitrogen Rich Strips for Improved In-Season Nitrogen Fertilization | Corn, Wheat, Bermudagrass, Sorghum | Raun |
| 20 | Effect of Delayed Emergence on By-Plant Corn Grain Yield | Corn | Lawles |
| 21 | N Distribution in Corn | Corn | Freeman |
| 22 | Delayed N Fertilization in Corn, Catch-UP | Corn | Walsh |
| 23 | Corn yield prediction (Height, NDVI, ultrasound, distance, neighbor ht), using large scale plots | Corn | Tubana, Chung, Martin |
| 24 | Sorghum Yield Prediction | Sorghum | Moges |
| 25 | Canola Yield Prediction | Canola | Arnall |
| 26 | Theory: NDVI to predict NUE? Changing NUE, what determines NUE? Low NDVI, higher RI? (true for wheat but not for corn) | Corn and Wheat | Tubana, Arnall, Chung |
| 27 | Long-Term Corn Trial | Corn | Raun |
| 28 | Long-Term N Topdress Trial, LCB | Wheat | Desta |
| 29 | Georgia Pacific Trials | Wheat | Raun |
| 30 | Miracle Products Trial | Wheat | Raun |
| Projects that Can Be Written UP | |||
| Long-term no-till topdress N trial | |||
| N Mineralization Trial, Lahoma | |||
| COMPLETED | |||
| 1 | By Plant Prediction of Corn Grain Yield | Corn | Martin |
| 2 | Effect of Corn Hybrid, N Rate, and Plant Population on CV and RI using Red and Green NDVI | Corn | Teal |
| 3 | Growth stage, development, and spatial variability in corn evaluated using optical sensor readings | Corn | Martin |
| 4 | Determination of optimum rate and growth stage for foliar applied phosphorus in corn | Corn and Wheat | Desta |
| NEW PROJECTS | |||
| Relationship with Yield | Relationship with N Rate | ||
| Height | increased height as a function of its neighbor results in a relative increase in yield | increased height as a "relative" function of its neighbor | |
| CV | increased CV, decreased yield | increased CV, decreased N rate | |
| NDVI | increased NDVI, increased yield | increased NDVI, decreased N rate | |
| GDD or Days | increased gdd, decreased yield | increased gdd, decreased N rate | |
| Variable NUE | |||
| Variable RI | |||
| if an entire area has low NDVI, the N function is different, than when | |||
| you just have a few plants with low NDVI, or that are behind. | |||
| Model must account for competition and the size of each neighbor | |||
| CV of the "area" (4-5 plants) will dictate what model is used | |||
| when NDVI is high, limit N application | |||
| Height, CV, NDVI for N rate | |||
| % behind: Point at which you decide not to fertilize | |||
| When the plant is x% ahead, what do you decide to do? | |||