A field experiment was conducted during kharif season 2021 to study the effect of seed size and bio-fertilizers on growth, yield and yield parameter of crop. The treatments include different categories of seed size viz., mixed (S1), bold (S2) and small seed size (S3) and bio-fertilizer viz., control (B1), Rhizobium + PSB + KMB (B2) and Trichoderma harzianum + Aspergillus niger (B3). Large seed size and bio-fertilizer shows significant effect on growth parameter viz., plant height, number of branches plant-1, number of pegs plant-1 and root nodules plant-1 and yield parameter viz., number of pods plant-1, number of seeds per pod-1, seed index, shelling percentage and seed yield of groundnut except harvest index. Large seed size shows significant increase in number of pegs plant-1 and pods plant-1 which increase the yield of groundnut. In case of bio-fertilizer, Rhizobium + PSB + KMB shows significant effect on growth and yield parameter viz., plant height, number of branches plant-1, number of pegs plant-1, root nodules plant-1, yield parameter viz., number of pods plant-1, number of seeds per pod-1, seed index, shelling percentage and seed yield of groundnut except harvest index.

A field experiment was conducted during kharif season 2021 to study the effect of seed size and bio-fertilizers on yield, quality, nutrient content and uptake by the crop and available nutrients in soil after harvest of crop. The treatments include different categories of seed size viz., mixed (S1), bold (S2) and small seed size (S3) and bio-fertilizer viz., control (B1), Rhizobium + PSB + KMB (B2) and Trichoderma harzianum + Aspergillus niger (B3). Seed yield and haulm yield of groundnut were significantly increased by the treatments of seed size and biofertilizers. The crops sown with large seed size (1184 kg ha-1) and bio-fertilizer with the treatment Rhizobium + PSB + KMB produced significantly higher seed yield (1227 kg ha-1). Similarly, significantly higher haulm yield was also found in the treatment large seed (2442 kg ha-1) and Rhizobium + PSB + KMB (2427 kg ha-1). However, oil content and oil yield were found non-significant by seed size and bio-fertilizer. Significantly higher nutrient uptake by seed and haulm of crop obtained with the treatment bold seed and Rhizobium + PSB + KMB.