Effect of chemicals on growth and buddability in rough lemon (Citrus jambhiri Lush) rootstock seedlings under semi arid irrigated ecosystem of Haryana

Abstract

An experiment was conducted with the objective to advance and enhance the buddabiltiy in rough lemon (Citrus jambhiri Lush) seedlings comprising foliar application of T1 (GA3 50 ppm + Urea 0.5%), T2 (GA3 50 ppm + Urea 1%), T3 (GA3 100 ppm + Urea 0.5%), T4 (GA3 100 ppm + Urea 1%), T5 (NAA 50 ppm + Urea 0.5%), T6 (NAA 50 ppm + Urea 1%), T7 (NAA 100 ppm + Urea 0.5%), T8 (NAA 100 ppm + Urea 1%), T9 (ABA 50 ppm + Urea 0.5%), T10 (ABA 50 ppm + Urea 1% ), T11 (ABA 100 ppm + Urea 0.5%), T12 (ABA 100 ppm + Urea 1%) and T13 (Control) twice after 30 and 60 days after transplanting. Maximum seedling height 95.83cm and numbers of leaves 98.17/plant was measured in treatment T4 (GA3 100 ppm + Urea 1%)at 180 days after transplanting. Maximum stem diameter 7.16mm was measured in treatment T11 (ABA 100 ppm + Urea 0.5%). The highest per cent seedlings 57.14, 76.19 and 95.24% attained buddable stage in treatment T11 at 150 DAT, 165 DAT and 180 DAT respectively. Overall, foliar spray of ABA (100 ppm + Urea 0.5%) twice at 30 and 60 DAT resulted in 57% buddable seedling over control (14%) in rough lemon rootstock 150 DAT.