Effect of lime on yield contributing characters of Wheat in Barind tract of Bangladesh

Abstract

Bold) : There were six lime treatments viz.T1: Control, T2 : 0.5 t lime ha-1 , T3 : 1.0 t lime ha- 1, T4 : 1.5 t lime ha-1, T5 : 2.0 t lime ha-1, and T6 : 2.5 t lime ha-1. Dolochun(CaCO3) was used as the liming material. The design of the experiment was Randomized Complete Block Design (RCBD )with three replications. Every plot received 140.0 kg N, 25.0 kg P, 106.0 kg K, 3.06 kg S, 3.6 kg Zn and 0.6 kg B ha-1 from urea, TSP, MoP, gypsum, zinc sulphate (monohydrate) and boric acid, respectively. Available K, P, Ca and Mg were significantly increased due to application of lime which was mainly associated with increased wheat yields. The different characters of wheat viz. plant height, tillers plant-1, spike length, grains sipke-1 and grain yield were significantly increased by the application of lime. The application of 0.5 t lime ha-1 significantly increased most of the growth parameters of wheat compared to that without any lime application. The application of lime had significant effect on the grain yield of wheat. The highest grain yield was found in T4 (4.73 t ha-1), which was statistically identical with the grain yields obtained in T5 and T6 treatments but superior to those found in T1, T2, T3 treatments. Thus, the application of 1.50 t lime ha-1 is enough for satisfactory yield wheat.