Vol. 8, Issue 6 (2019)

Author(s):
TH SA Raja Rajeshwaran and K Arulmozhiselvan

Abstract:
A study on nitrogen movement from deep placed Nutripellet Pack (NPP) was conducted in comparison with surface band application of fertilizers in the field experiment with sugarcane. NPP is a composition for the slow release of nutrients made by sealing fertilizer pellet in a polymer coated paper pouch and then wrapping in a paper along with manure pellet. For the study NPP was placed at 5 cm depth below the soil surface. The results showed that, with the placement of NPP in soil, available N much concentrated in top 0-15 cm surface layer and also distributed in sub surface and sub soil up to 45 cm distance during the period from 2 to 4 months. From 5 months onwards it accumulated horizontally in 15 to 45 cm distance in 15-30 cm and 30-45 cm layers. Feeble account of accumulation was noted with surface band application of N fertilizer in horizontal distance all through the year and moderate account of leaching was noted vertically down within the horizontal distance of 15 cm, particularly after 10 months.