A field study was conducted at S.G. College of Agriculture and Research Station, Jagdalpur (Chhattisgarh). The experiment was laid out in a split plot design with 3 levels of fertilizer as main plot and 4 levels of row spacing as sub plot with 3 replications. Results showed that the effect of levels of fertilizer on soil properties, the highest values of available N (255 kg ha^-1), P (10.8 kg ha^-1) and Fe (35.8 ppm) in soil were recorded with 125% of RDF and these parameters increased significantly with the increase in levels of fertilizer from 75 to 100 and 100 to 125% of RDF. The increase in available N and P with increased levels of fertilizer for these nutrients were obvious but increase in available Fe with increasing fertilizer doses of only NP fertilizer might be either due to the acidifying effect during the nitrification of urea or through replacement of Fe²⁺ from exchangeable site on clay by the NH₄⁺ ion formed after its hydrolysis of urea. Whereas in case of effect of row spacing on soil properties, the highest values of available N (233 kg ha^-1), P (9.3 kg ha^-1) and K (198 kg ha^-1) in soil were recorded under 60 cm row spacing. The available N in soil increased significantly with increasing the row spacing from 22.5 to 45 cm, 30 to 60cm and 45 to 60 cm ,but the values are at par with each other when the row spacing increased from 22.5 to 30 cm , 30 to 45 cm. The available P in soil increased significantly with increasing row spacing from 22.5 to 30 cm and 30 to 60 cm but the values are at par with each other when the row spacing increased from 30 to 45 and 45 to 60 cm. The available K in soil increased significantly with increasing row spacing from 22.5 to 45 cm, however the values are at par with each other when row spacing increased from 22.5 to 30, 30 to 45 and 45 to 60 cm. The increase in available N P and K with increased row spacing was found might be due to their less utilization in wider spacing having lower plant population in comparison to narrow row spacing. The crop with narrow spacing had greater plant population that could be able to utilize more available nutrients in the soil. The other soil parameters under study were found non significant with the levels of fertilizer and row spacing.

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