Distribution of macronutrients at various depths in different soil series around Tandojam [Pakistan]
2002
Gaimnani, U.K.
Soils samples were collected from six different soil series such as, Lalian, Miani, Pacca, Rustam. Shahdara, and Sultanpur for the determination of NP and K status and note some physico-chemical properties of the soils. The soils were generally heavy in texture, non-saline and low in organic matter. All the soil series were slightly to moderately alkaline in reaction (pH greater than 7.0) and moderately calcareous in nature. Nitrogen contents ranged from 0.004- 0.064% with an average value 0.023%. Available phosphorus contents ranged from 0.75-7.5 mg/kg, with an average value 2.36 mg/kg. Exchangeable potassium varied from 100-440 mg/kg, with an average value 180.67 mg/kg. It was concluded that soils around Tandojam were mostly heavy in texture, non- saline, slightly to moderately alkaline in reaction, moderately calcareous in nature. Organic matter, total nitrogen and available phosphorus were low in all soil series, while exchangeable potassium was quite adequate. Therefore application of farm yard manure organic matter, nitrogen and phosphatic fertilizers are suggested to maintain soil fertility as well as to get maximum yield production.
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