Q366
Critical limit of available phosphorus in soil for wheat crop by Olsen's method is
A.
5 kg/ha
B.
10 kg/ha
AnswerC.
25 kg/ha
D.
22.5 kg/ha
Answer: Option B
Solution
Answer: Option B
Solution:
The critical limit of available phosphorus in soil for the wheat crop by Olsen's method is 10 kg/ha.Olsen’s method is done for the estimation of phosphorus and is based on the extraction of phosphate from the soil by 0.5 N sodium bicarbonate solution adjusted to pH 8.5. this procedure is suitable for calcareous, alkaline, neutral, and slightly acidic soils containing CaPO4.