---

PHYSICOCHEMICAL CHARACTERSTICS (AB-DTPA EXTRACTABLE P AND K) OF SOIL UNDER DIFFERENT FIELD CONDITIONS

Fahad Khalid*, Kashif Khan, Mahboob Ali, Faheem Akbar, Hamza Khalid, Waleed Khalid, Nida Khalid

---

Download PDF

---

Abstract

A field survey was conducted in District Abbottabad, Pakistan to evaluate soil physico-chemical properties during the year 2023. Twenty representative soil samples were collected at depth 0-15 cm locations and recorded their coordinates through Global Positioning System (GPS). These samples were analyzed for soil pH, EC, texture, AB-DTPA extractable P, K and lime content. Results indicated that soil texture was mostly sandy loam and silty loam. The pH values of soil samples under investigations varied from 7.50 to 8.52. Electrical conductivity ranged from 0.02 to 0.24 dS m^-1. Lime content of soil ranged from 2 to 21.75 % showing that 50% of the samples were highly calcareous in nature, while 45% of the samples were moderately calcareous. The AB-DTPA extractable P content in soil under investigations ranged from 0.95 to 45.80 mg kg^-1. The P content was Low in 30 %, medium in 10% and high in 60% soil samples. The AB-DTPA extractable K content of soil ranged from 34.8 to 188.8 mg kg^-1 and was low in 40%, medium in 30% and high in 30% soil samples. Results suggested that soil under investigations could be improved by the addition of Farmyard Manure (FYM), with chemical Fertilizers and proper soil management practices for sustainable crop production.

Keywords: FYM, pH, EC, texture, AB-DTPA extractable P, K and lime content.