Randomized block design reveals that integrated nutrient management improves quality and soil profile of Amaranthus tristis, indicating the efficacy of various nutrient sources.
The study aimed to assess Impact of inorganic fertilizers, vermicompost, FYM and biofertilizers on quality and soil profile of Amaranthus tristis L. The experiment was laid out in a randomized block design (RBD) with three replications. The treatment combinations were T0: Control, T1: 100% RDF (60:30:20kg NPK/ha) + FYM 5t/ha, T2: 100% RDF + Vermicompost 4t/ha, T3:100% RDF+ Vermicompost 2t/ha + PSB + Azotobacter, T4: 75% RDF +FYM 5t/ha, T5: 75 % RDF + Vermicompost 4t/ha, T6:75 % RDF + Vermicompost 2t/ha +PSB + Azotobacter, T7: 75 % RDF instant mixture with incubated vermicompost 1t/ha (2g biofertilizer/kg vermicompost for 15 days) and T8: 100% RDF instant mixture with incubated vermicompost 1t/ha (2gbiofertilizer/kg vermicompost for 15 days). Among the treatments, the highest ascorbic acid content (74.17mg/100g) and crude fibre (0.91%) content was exhibited by the treatments T7 and T4, respectively. Additionally, treatment T8 recorded the highest protein (2.34g/100g), calcium (9.86%), iron (23.4mg/100g), and zinc (2.64mg/100g) content. Soil parameters viz., soil pH, organic matter and available nitrogen were maximum in T3 with values 5.39, 0.93% and 269 kg/ha, respectively, however, available phosphorus and available potassium were maximum in T6 with values 37kg/ha and 140kg/ha.
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Indurthi et al. (2025) studied this question.
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