Assignment

1. Write the balanced equation for the preparation of “Dickman and Bray’s Reagent”.
2. Discuss about the method of determination of available phosphorus in the soil by Bray’s method.
3. How is NH4⁺ held in the soil, and how can it be extracted?
4. Discuss about the various methods for the estimation of phosphorus in the soil.
5. Compare between the Bray-Kurtz P1 and Mehlich-3 Tests for the estimation of phosphorus.