In this article we will discuss about the organic and inorganic forms of soil phosphorus used for improving crop productivity. Organic Soil Phosphorus: Usual organic forms of soil phosphorus are esters of orthophosphoric acid and numerous mono and diesters. Five groups of organic phosphorus esters have been identified of which three esters are important. i. […]
Forms of Soil Phosphorus | Soil Fertility | Fertilisers | Agronomy
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Essential Nutrients: Classification and Functions | Plants | Agronomy
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In this article we will discuss about:- 1. Classification of Essential Nutrients 2. Criteria of Essentiality 3. Functions. Classification of Essential Nutrients: There are 17 essential elements that are required by most plants (Table 6.2). The Big Three: nitrogen, phosphorus and potassium are the primary fertiliser elements used in crop production. Excluding carbon, hydrogen and […]
When to Irrigate the Crops? | Irrigation | Crops | Agronomy
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An ideal irrigation schedule for optimum yield must indicate correct timing (when to irrigate) and amount of irrigation water at each irrigation. Scheduling irrigation is the process of determining when to irrigate and how much water to apply. There are several approaches for determining when to irrigate the crop. The approaches can be broadly classified […]