Influence of Phosphorus and Zinc on Physio-chemical Properties of Soil on Cowpea (Vigna unguiculata L.)

Abstract

The field experiment was conducted at the central research farm Soil Science Research Farm of SHUATS Prayagraj, (U.P.) on, sandy loam soil to “Influence of Phosphorus and Zinc on Physio-chemical Properties of Soil on Cowpea (Vigna unguiculata L.)” during Kharif season of 2022. There are nine treatment combinations comprised in randomized block design with three replications making a total of 27 experimental plots. The soil samples were taken in two depths (0-15 cm & 15-30 cm) for analysis. The results showed that the application of Phosphorus and Zinc had a significant and non-significant effect on soil physico-chemical properties. The maximum bulk density (1.52 and 1.52 Mg-3), particle density (2.61 and 2.63 Mg m-3), and pH (7.20 and 7.25) were recorded in T1 (Absolute control) at 0-15 and 15-30 cm depth. Similarly, the maximum percentage EC (0.48 and 0.49 dS m-1), pore space (48.49 and 47.99%), water holding capacity (44.75 and 44.03%), percentage organic carbon (0.47 and 0.46%), available nitrogen (288.14 and 287.68 kg ha-1), phosphorus (29.60 and 28.85 kg ha-1) and potassium (192.41 and. 191.54 kg ha-1) was recorded in T9 (P2O5 @100% + Zn @ 100%)