Effect of Different Levels of Enriched Phosphatic Sludge Application on Growth, Yield and Nutrient Uptake by Maize

摘要

A field experiment was conducted to assess the effect of different levels of enriched phosphatic sludge application on growth, yield and nutrient uptake by maize during kharif 2016 at Zonal Agricultural Research Station, V. C. Farm, Mandya. The response of crop increased with increase in the levels of (125,250,500,750 and 1000 kg ha~(-1)) enriched phosphatic sludge (EPS) application along with recommended dose of fertilizer up to certain levels. Significantly higher plant growth (208.51 cm) was recorded with application of enriched phosphatic sludge at RDF + 750 kg ha~(-1), however it was on par with application of enriched phosphatic sludge at RDF + 1000 kg ha~(-1) and RDF + FYM. Significantly higher grain yield (90.84 q ha~(-1)) and stover yield (110.80 q ha~(-1)) of maize was observed with enriched phosphatic sludge at RDF + 750 kg ha~(-1), and was on par with application of enriched phosphatic sludge at RDF+ 1000 kg ha~(-1) and RDF + FYM. Lower grain and stover yield (55.14 and 67.90 q ha~(-1),respectively) was recorded in control. Similar trends were observed with respect to nutrient uptake. Higher N (203.48 kg ha~(-1)), P (47.53 kg ha~(-1)) and K (170.74 kg ha~(-1)) uptake was observed with enriched phosphatic sludge (RDF+750kgha~(-1)).