• M.Vamshi
• S.Srinivasan

A pot experiment on sunflower cv. Sunbred was carried out to study the effect of different levels of chemical fertilizers and different enriched organic composts during April-July, 2017 at the pot culture yard of Department of Soil Science & Agricultural Chemistry, Annamalai University, Annamalainagar. The initial soil available nitrogen, phosphorus, potassium status were 228 (low), 10.2 (low) and 317 (high) kg ha-1, respectively. The study comprised the treatments of five levels of factor-A (EC0–Control, EC1 – EFYM, EC2 – EWHC, EC3 – ENLC, EC4–ESDC ) and four levels of factor-B (CF0–Control, CF1–75% RDF, CF2–100% RDF, CF3–125% RDF) (20 treatment combinations), laid out in factorial completely randomized design (FCRD) with three replications. Sunflower cv. Sunbred was grown as a test crop and supplied with enriched composts and different levels of fertilizers as per the treatment schedule. Recommended dose of N:P2O5:K2O for sunflower is 60:90:60 kg ha-1 respectively were applied in the form of urea, SSP and MOP, respectively. The results revealed that application of enriched composts and different levels of chemical fertilizers significantly increased the nitrogen, phosphorus and potassium uptake by sunflower. Among the different treatments, the combined application of CF3–125% RDF + enriched water hyacinth compost (EWHC) recorded the highest N, P and K uptake by sunflower were 1.63, 0.41 and 1.5 (g pot-1), respectively.

(Key words: Sunflower, NPK uptake, chemical fertilizers, enriched composts)

"Nutrient uptake by sunflower as influenced by enriched composts with N-P-K fertilizers", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 9, page no.1045-1050, September-2018, Available :http://www.jetir.org/papers/JETIR1809289.pdf

"Nutrient uptake by sunflower as influenced by enriched composts with N-P-K fertilizers", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 9, page no. pp1045-1050, September-2018, Available at : http://www.jetir.org/papers/JETIR1809289.pdf