The soils were sandy clay loam to clay loam in texture, near neutral to alkaline in soil reaction, non-saline and low to medium organic carbon status. The cation exchange capacity of soils ranged from 8.93-13.7 cmol (p~+) kg~(-1) and the active CaC0_3from 3.8- 13.6 g kg~(-1). Further, the soils were low to medium in available nitrogen, medium to high in available phosphorus, low to medium in available potassium and available sulphur. Among the DTPA extractable micronutrients, iron and manganese wererich in most soils and available zinc was deficient. The amount of different P forms i.e. Soluble-P (Saloid-P), Al-phosphates (Al-P), Fe-phosphates (Fe-P), Reductant Soluble-P (RS-P) and calcium phosphates (Ca -P) were determined and found to be rangedfrom; 3.25-14.7, 24.5-54.8, 25.2-52.7, 10.3-21.3 and 23.7-112 mg kg~(-1), respectively. Simple correlation coefficients showed that Olsen-P had a significant correlation with soluble-P, Fe-P, Al-P and Ca-P. A significant correlation was also observed between the P forms themselves, which is presumably a reflection of the existence of a dynamic relation between the chemical forms of an element in soil. Organic carbon (OC) with Fe-P and Al-P; CEC with Fe-P and Al-P and active CaC0_3 with all P fractions have negative significant correlation.
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机译：土壤质地为沙质壤土至壤土，土壤反应接近中性至碱性，无盐，有机碳水平低至中等。土壤的阳离子交换容量范围为8.93-13.7 cmol（p〜+）kg〜（-1），活性CaCO3_3的范围为3.8-13.6 g kg〜（-1）。此外，土壤中有效氮含量低至中等，有效磷含量中至高，有效钾含量和有效硫中低至中等。在DTPA可提取的微量营养素中，大多数土壤中的铁和锰含量很高，而有效锌含量却不足。不同P形式的量，即可溶性P（Saloid-P），磷酸铝（Al-P），磷酸铁（Fe-P），还原剂可溶性P（RS-P）和磷酸钙（Ca -P ）被确定并发现介于分别为3.25-14.7、24.5-54.8、25.2-52.7、10.3-21.3和23.7-112 mg kg〜（-1）。简单的相关系数表明，Olsen-P与可溶性P，Fe-P，Al-P和Ca-P显着相关。 P形式之间也发现了显着的相关性，这可能是土壤中元素化学形式之间存在动态关系的反映。具有Fe-P和Al-P的有机碳（OC）;具有Fe-P和Al-P的CEC和具有所有P组分的活性CaC0_3具有负显着的相关性。
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