Farmers can save money and protect the environment by taking credit for the fertilizer value of manure and legume crops. The value of these credits are subtracted from the base (unadjusted) fertilizer recommendations for a field. This reduces the money spent on purchased fertilizer applications and helps prevent over-application. There are formulas and math involved in determining the credit values. This app includes three calculators that have these formulas built in and do all the math for you.
This app calculates the plant-available nitrogen (N), phosphorus (P2O5), potassium (K2O), and sulfur (S) nutrient credits (i.e. the fertilizer value) of manure from various livestock species that are applied to cropland fields. The app also calculates the N credit available to crops that follow forage legumes in the rotation.
Analyzed Nutrient Content is used when the manure has been analyzed by a laboratory for its nutrient content. When using this part of the app, you can:
• Select the manure source (livestock species and liquid or solid form).
• Select one of the three categories for the time from application to incorporation of the manure.
• Enter the reported lab values for either total or available N, P2O5, K2O, and S from the lab report.
• Choose the manure application rate by tapping the [- +] buttons to raise or lower the values.
Your calculated nutrient credits from this manure application are displayed at the bottom of the screen. These credits should be subtracted from the base (unadjusted) fertilizer recommendations for a field receiving this manure. If the total nutrient content is entered, the app will covert these values to available nutrient content automatically. Likewise, if the available nutrient content of the manure is entered, the equivalent total nutrient content of the manure sample will be displayed. Tap the Reset button in the center of the screen to clear the nutrient content displays.
Average Nutrient Content is used when the manure has not been analyzed by a laboratory for its nutrient content. When this is the case, the typical nutrient contents (also called book values) based on lab analysis averages will be used. When using this part of the app, you can:
• Select the manure source (livestock species and liquid or solid form).
• Select one of the three categories for the time from application to incorporation of the manure.
• Choose the manure application rate by tapping the [- +] buttons to raise or lower the values.
Your calculated nutrient credits from this manure application are displayed at the bottom of the screen. These credits should be subtracted from the base (unadjusted) fertilizer recommendations for a field receiving this manure. Manure nutrient content can vary greatly; manure analysis is encouraged.
Legume Nitrogen Credits is used when crops follow forage legumes in rotation.
When using this part of the app, you can:
• Select the forage legume crop (Alfalfa or Red Clover/Birdsfoot Trefoil).
• Select the soil texture of the field (Medium/Fine Soils or Sand).
• Select the density of the legume stand at the time of termination.
• Select the amount of plant regrowth present at the time the legume crop is killed.
The legume-N nutrient credit available to the crop that follows in the rotation is displayed at the bottom of the screen. This amount should be subtracted from the base (unadjusted) N fertilizer recommendation.
NPK Credits Calculator is an Android Tools app developed by University of Wisconsin Integrated Pest Management and published on the Google play store. It has gained around 1000 installs so far, with an average rating of 4.0 out of 5 in the play store.
NPK Credits Calculator requires Android with an OS version of 2.3 and up. In addition, the app has a content rating of Everyone, from which you can decide if it is suitable to install for family, kids, or adult users. NPK Credits Calculator is an Android app and cannot be installed on Windows PC or MAC directly.
Android Emulator is a software application that enables you to run Android apps and games on a PC by emulating Android OS. There are many free Android emulators available on the internet. However, emulators consume many system resources to emulate an OS and run apps on it. So it is advised that you check the minimum and required system requirements of an Android emulator before you download and install it on your PC.
Below you will find how to install and run NPK Credits Calculator on PC:
If you follow the above steps correctly, you should have the NPK Credits Calculator ready to run on your Windows PC or MAC. In addition, you can check the minimum system requirements of the emulator on the official website before installing it. This way, you can avoid any system-related technical issues.
| NPK Credits Calculator APK 1.0 | 960.55 KB | 1.0 |
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