Effect of Various Forms of Urea and Ga₃ on Soil Available Nitrogen, Phosphorus and Potash in Chrysanthemum (Chrysanthemum morifolium Ramat)

The experiment on effect of various forms of urea and GA₃ on soil available nitrogen, phosphorus and potash in chrysanthemum (Chrysanthemum morifolium Ramat.) was carried out at Department of Horticulture, Faculty of Agriculture, Annamalai University, Tamil Nadu. Forty five days old rooted cutting of the variety “White” grown on a media containing a mixture of one part of sand, one part of red earth and one part of farm yard manure were subjected to four forms of urea (liquid feeding, tarcoated urea, neemcake coated urea and prilled urea) and four levels of GA₃ (water spray, 50 ppm, 75 ppm and 100 ppm). The maximum available soil nitrogen (208.17 kgha⁻¹), the maximum available soil P₂O₅(18.50 kgha⁻¹) and the maximum soil potassium (251.92 kgha⁻¹) was recorded in Neemcake coated urea treatment.