P&K Nutrient Calculator 4+
Potash Development Association
專為 iPad 設計
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- 免費
螢幕截圖
描述
Nutrient offtake calculation
It enables a quick calculation of the phosphate and potash offtakes by most UK crops at harvest. Enter the crop details and yield in the top section and it will show the nutrient offtakes on the bottom lines. These quantities are often termed ‘maintenance dressings’, and usually provide the recommendation for fertiliser use when the soil Indices are at target level (with some exceptions, such as potatoes). If the soil Index is above the target level a fertiliser dressing may be reduced or considered unnecessary. The cost of such maintenance dressings should of course be charged to the crop being grown.
Nutrient deficiency correction
If soil Indices are below the target level the second section of the Calculator provides a guide to the quantity of nutrient which is likely to be required to correct the deficiency. This will vary according to the level of deficiency and the soil type. The quantity will usually be more than can reasonably be applied in one season, and the Calculator asks by how much and how quickly you want to correct the deficiency, i.e. over how many years. The desired improvement can be input by Index or more precisely by mg/litre as determined by soil analysis. Once all relevant information has been input (for one or both nutrients) the results will provide a guide to the total quantity of nutrient(s) which will be required. The annual dressing is also shown, according to the timescale selected. The bottom line shows this annual deficiency-correcting application, together with the maintenance dressing. The cost of the nutrient(s) required to correct the deficiency should not be charged to the crop being grown but should be accounted for separately.
It is important to read the notes attached to the Calculator.
最新功能
版本 1.1.1
Updated calculator to reflect current recommendations.
App 私隱
開發者Potash Development Association並未向 Apple 提供其私隱慣例及資料處理方式的詳細資料。詳情請參閱開發者的私隱政策。
未提供詳細資料
開發者下次提交 App 更新時須提供私隱詳細資料。
資料
- 供應商
- Potash Development Association
- 大小
- 2.9 MB
- 類別
- 生產力
- 兼容性
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- iPhone
- 須使用 iOS 10.0 或以上版本。
- iPad
- 須使用 iPadOS 10.0 或以上版本。
- iPod touch
- 須使用 iOS 10.0 或以上版本。
- Mac
- 須使用 macOS 11.0 或以上版本及配備 Apple M1 或以上版本晶片的 Mac。
- Apple Vision
- 須使用 visionOS 1.0 或以上版本。
- 語言
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英文
- 年齡
- 4+
- Copyright
- © 2020 Potash Development Association
- 價格
- 免費