• R.Bhuvaneswari
• S.Srinivasan
• K. Dhanasekaran
• S.Suganthi

An incubation experiment was conducted to study the effect of soil application of Lignite humic acid (LHA) on the nutrient availability in soil. Soils collected from three major vegetable growing regions of Cuddalore district representing three soil series viz., Mangadu (Mgd), Padugai (Pdg) and Vadalapakkam (Vdm) were incubated with six levels of LHA (0, 10, 20, 30, 40 and 50 mg kg-1). Soil samples were drawn at 15 days intervals (0, 15, 30, 45 and 60 days after incubation) and were analysed for available N, P, K, Zn, Fe, Mn and Cu. The results of the incubation study revealed that incubation of soil with LHA increased the availability of N, P, K, Zn, Fe, Mn and Cu. Increase in the level of LHA from 0 to 40 mg kg-1 positively increased the both macro and micronutrients status of soil.

Mangadu (Mgd), Padugai (Pdg) and Vadalapakkam (Vdm) soil series

"EFFECT OF SOIL APPLICATION OF LHA ON THE NUTRIENT AVAILABILITY IN THREE DIFFERENT SOIL SERIES – AN INCUBATION STUDY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.444-454, June-2019, Available :http://www.jetir.org/papers/JETIR1906C73.pdf

"EFFECT OF SOIL APPLICATION OF LHA ON THE NUTRIENT AVAILABILITY IN THREE DIFFERENT SOIL SERIES – AN INCUBATION STUDY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp444-454, June-2019, Available at : http://www.jetir.org/papers/JETIR1906C73.pdf