Division of Agricultural Sciences and Natural Resources
DASNR App Listing
Faculty within the Division of Agricultural Sciences and Natural Resources have created several web-based and mobile applications. These decision support tools assist clientele in making calculations, assessing environmental impact, and predictive modeling using existing conditions. If you have questions about an app or If you are a DASNR faculty and would like an app to be included in this list, please contact Dwayne Hunter for more information. DASNR's "Mobile Application Development Guidelines and Best Practices" is available for project leaders and app developers.
GreenSeeker Data Logger
The Trimble GreenSeeker handheld crop sensor is an affordable, easy-to-use measurement device that can be used to assess the health - vigor - of a crop in order to make better nutrient management decisions on your farm. Use the GreenSeeker handheld to instantly take a reading of your crop health. Readings can be used to make non-subjective decisions regarding the amount of fertilizer to be applied to your crop, resulting in more effective use of fertilizer - a benefit to your financial bottom line and the environment.
Released: January, 2017, version 1.0
Sugarcane Aphid Decision Aid
This app uses the cost of application versus potential loss due to not applying insecticide based upon past research to determine if an insecticide application is economical.
Managing livestock demands accurate and fast decisions for a successful operation. Nowadays, managers rely on either inaccurate visual inferences or expensive tools for acquiring fast answers to in-farm issues. GrazeOK is a user friendly electronic version of the Oklahoman grazing stick which allows fast and proper estimation of stock density, number of pastures, grazing and rest days by simply measuring plant height and canopy cover with a yard stick and inputting them in your phone. An accompanying YouTube video explaining the app and how to collect data is available at https://www.youtube.com/watch?v=-uYNVwx9Rb4.
Released: December, 2016, version 1.0
Cattle Management in Limited Forage
Beef production can be influenced by widespread drought, record high and low grain and feed prices, and economic uncertainties. Capturing value, managing returns and least-cost production is crucial for beef cattle operators. This application is designed to help producers identify management practices for cow-calf operations when pasture is limited. There is a list of questions in this application intended to help beef producers determine appropriate management practices for cow-calf operations when pasture is limited. Answer the series of questions to determine a possible management practice.
Released: October 11, 2016; Version: 1.0
Grazing Management Toxic Plants
This application was developed for livestock producers interested in grazing forage crops. Plants listed have been evaluated for safety in regards to metabolic or toxicity issues for multiple classifications of livestock species. All plants will have a score for the usefulness of the plant as grazing forage for livestock. The ranking is based on a 0-4 scale where 0 is not recommended to 4 being highly recommended. The rankings are based on safe consumption of the plant, forage quality, and yield potential.
Released: July 28, 2016; Version: 1.0
Grain Drill Calibration Calc
This application is designed to aid in the calibration of a grain drill or planter for canola seeding rates. Canola seeding rate can be calibrated via volumetric (mL) measures. All other grains and granular fertilizer rates can be calibrated through weight measures (grams, ounces, or pounds).
Released: May 31, 2016; Version: 1.0
Growing Degree Days Calculator
This application is designed for winter wheat and winter canola producers outside of Oklahoma to use to calculate the number of growing days since the crop was planted (GDD>0). This calculation can be used for Sensor Based Nitrogen Management strategies that utilize the GreenSeeker Sensor and N-Rich Strip. Also included in this application is a cumulative Growing Degree Day (GDD) calculator. Crops included in this calculator are: Wheat, Grass hay, Alfalfa, Corn, Cotton, Peanut, Sorghum, and Soybean. The application uses user zip code to identify where temperature data is collected from.
Released: May 31, 2016; Version: 1.0
Soil Sample Barcode Reader
This app is designed to aid those who use the Oklahoma State University Soil Water Forage Analytical Laboratory. With this app, users can utilize the internal GPS of their mobile device to log the location that a soil or tissue sample is collected as well as add an ID and description to the site. The app can also access the camera in the device to capture an image of the SWFAL bar code to link a sample number to each sample which can be done at the time of collection or later.
Updated: May 25, 2016; Version: 1.1; Requires iOS 8.4 or later. Compatible with iPhone, iPad, and iPod touch.
Return on Nitrogen Investment
This app is designed as a tool in determining economic nitrogen (N) rates. This calculator determines the return on investment (ROI) of N fertilizer for multiple crops under two different scenarios. The first scenario is that yield fertilized for is not realized. The other scenario is if the producer under fertilizes for the environment.
Updated: April 12, 2016; Version: 1.1; Requires iOS 8.4 or later. Compatible with iPhone, iPad, and iPod touch.
Poinsettia Care Tips
Poinsettia Care Tips is designed to assist homeowners with care of their potted poinsettias. General care, including reblooming, tips are provided and are applicable to any cultivar or pot size.
Release: November 9, 2015; Version: 1.0; Requires iOS 8.1 or later. Compatible with iPhone, iPad, and iPod touch.
RxBurnTracker allows the user to monitor fire effects and keep track of prescribed burns.
Release: June 29, 2015; Version: 1.0; Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Wildlife Food Plots
This app identifies food plot forages that can be planted for wildlife management. For each plant species proper seeding rate and planting recommendations are provided. Lists of desirable plants can be created, saved and sent via email.
Updated: March 31, 2016; Version: 1.13; Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.
N Rate Calculator
Using this app, you can enter GreenSeeker sensor data into the calculator tailored for many different crops and regions, and get reliable mid-season fertilizer N rates that will optimize farmer profits.
Updated: Jul 16, 2013; Version: 1.1; Requires iOS 6.1 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.
Canopeo is a rapid and accurate green canopy cover measurement tool. Use this app to quantify the percent canopy cover of live green vegetation for any agricultural crop, turf, or grassland based on downward-facing photos taken with your mobile device. Replace the traditional visual scoring or the sometimes expensive desktop programs with this powerful and portable quantitative tool.
Canopeo is based on research conducted at Oklahoma State University and allows you to accurately determine the percent canopy cover in real-time, so that you can precisely monitor crop progress and make informed management decisions. Potential applications include: quantifying canopy cover of small grains and row crops; measuring crop damage by freeze, hail, or herbicide; evaluating turf grass stands.
This App calculates the maximum amount of fertilizer that should be applied with winter canola seed at planting based upon row spacing and fertilizer source. This app is just a general guide and sounds agronomics should be used in all situations.
Released: Jul 20, 2014; Version: 1.0; Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.
Crop Nutrients in Irrigation Water Calculator
Irrigation water is never without minerals and nutrients. With the input of laboratory results and an expected seasonal irrigation by the user this app will provide an estimated amount of nutrients delivered with every acre in of water applied and total pounds per acre per season. These results can then be used to adjust fertilizer management plans and strategies. Nutrients included in this app are: Nitrate, Sulfate, Iron, Ammonium, Chloride, Boron, Calcium, Magnesium and Potassium.
Updated: April 1, 2016; Version: 2.1; Requires iOS 8.1 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5, 6, and 6 Plus.
Optimize your wheat grain protein using topdress fertilizer N recommendations from OSU based on NDVI data.
Released: Dec 11, 2013; Version: 1.0.0; Requires iOS 6.1 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.
Accurate estimates of ammonia volatilization losses from surface applications of urea in agriculture. Estimates are in percent of the total N rate applied.
Updated: Nov 24, 2013; Version: 1.1.0; Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.
Cost: FREE! Description:
Sensor based nitrogen rate calculator for winter wheat. Active normalized difference vegetative index (NDVI) sensors are highly accurate in predicting plant biomass. By utilizing biomass produced per day, yield levels of cereal crops can be predicted. By using the predicted yield level, accurate N rates can then be determined from the mid-season NDVI readings.
Released: Nov 14, 2013; Version: 1.0; Requires iOS 6.1 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.
Plant Nitrogen Recommendations
This app contains a database of SPAD, atLEAF, and Leaf N concentration values for various horticultural crops to be used as a reference for determining plant nitrogen status based on chlorophyll sensor or foliar analysis values.
Updated: Feb 29, 2016; Version: 1.2; Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.
The FARRM Game teaches users about price and risk management using data from Oklahoma farms and ranches. Students decide the mix of crops and cattle to produce, how to price their products, and how to use crop insurance. Tools such as futures, options, and forward contracts are explained and utilized to manage price risk. Developed by agricultural economists at Oklahoma State University.
Updated: Jul 18, 2014; Version: 1.2; Requires iOS 7.0 or later. Compatible with iPad.
Oklahoma Nutrient Management Field Guide App is a mobile version of a printed handbook. Within this App users have access to nutrient removal values, a nutrient deficiency identification tool, fertilizer calculations for all of the major crops grown with Oklahoma and information on fertilizer sources and using the N-Rich Strip and GreenSeeker Sensor.
Updated: Sep 29, 2014; Version: 1.1.0; Requires iOS 7.1 or later. Compatible with iPad.