Effect of irrigation on seed yield and yield attributes of coriander (Coriandrum sativum L.)

Abstract

A field experiment on coriander (Coriandrum sativum L.) was taken at the five irrigation levels, consisting of no irrigation, one irrigation at branching stage (30 DAS), two irrigations, one at branching stage and other at flowering stage (60 DAS), two irrigations, one at branching and other at seed filling stage (90 DAS) and three irrigations, each at branching, flowering and seed filling stage. The experiment was conducted at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh with a view to observing the effect of irrigation on seed yield and yield attributes of coriander and determining the irrigation schedule of coriander for achieving its highest yield potential. The results revealed that three irrigations application of branching, flowering and seedfilling stage was the effecting performance in respect of seed yield attributes and produced the maximum seed yield (2.10 t/ha). The maximum total water use (TWU) was recorded from three irrigations (151.31 mm) but the highest total water use efficiency (TWUE) and irrigation water use efficiency (IWUE) were obtained from two irrigations (141.65 kg/ha/cm and 205.90 kg/ha/cm, respectively). The three irrigations gave the highest gross margin of Tk 58564/ha with the maximum BCR of 2.26.