Abstract:
The study was carried out at the Agronomy Field Laboratory, University of Rajshahi, Bangladesh during the period of 2010-2011 and 2011-2012 to study the effect of potassium and boron on the growth, development and yield of lentil. The treatment comprised of four varieties of lentil viz. BARI masur-1, BARI masur-4, BARI masur-5, BARI masur-6, Five levels of potassium (0, 15, 25, 35, 45 kg K ha-1) and five levels of boron (0, 0.5, 1, 1.5, 2 kg B ha-1). The experiments were laid out in RCBD design with three replications. Growth characters differed significantly due to variety, potassium and boron at different stages. The BARI masur-6 produced the highest TDM and CGR than other varieties in both the experiments. The highest growth characters were observed when field was fertilized with 35 kg K ha-1 and 1.5 kg B ha-1. TDM and CGR increased with the advancement of plant ages. The highest development parameters like LPR, BPR, FR, Days to 50% flowering and Days to maturity were observed in BARI masur-6 where applied different levels of potassium and boron. The lowest values were found in Control. The highest yield contributing characters like plant height, number of branches plant-1, number of effective pods plant-1, number of non-effective pods plant-1, number of seeds pod-1, length of the pod, and 1000 seed weight were produced BARI masur-6 which was statistically similar to BARI masur-5. Among the varieties BARI masur-6 produced the highest grain yield. When the field was fertilized with potassium and boron, the yield components were found maximum. The grain yield was highest when 35 kg K ha-1 and 1.5 kg B ha-1 were applied to the field. Grain yield was positively correlated with plant height, number of branches plant-1, number of effective pods plant-1, number of seeds pod-1, length of the pod and 1000 seed weight. So it could be concluded that BARI masur-6 is better for maximizing growth, development and yield of lentil when the field was fertilized with 35 kg K ha-1 and 1.5 kg B ha-1.
Description:
This thesis is Submitted to the Department of Agronomy and Agricultural Extension, University of Rajshahi, Rajshahi, Bangladesh for The Degree of Doctor of Philosophy (PhD)
