EFFECTS OF DIFFERENT LEVELS OF SOIL MOISTURE AND INDIGENOUS ORGANIC AMENDMENTS ON THE YIELD OF BORO RICE GROWN UNDER FIELD CONDITION

Abstract

A field study was conducted to determine the potentials of moist (70% soil
moisture) and saturated (> 100% soil moisture) soil conditions and organic
amendments of rice straw compost (RSC), mustard meal (MM) and
trichocompost (TC) on the selected rice varieties of BR 3, local BRRI dhan 29 and
BRRI dhan 74 in relation to the growth and yield attributes of rice varieties. The
rates of amendments were 0, 4, 8 t/ha for RSC; 0, 3, 6 t/ha for MM and 0, 2.5, 5
t/ha for TC. The maximum grain yield of 8.71 t/ha was attained from the
RSC4ML100 and 8.58 t/ha from RSC4ML70 treatments. The moist condition of soil
had almost similar effects on the number of productive tillers, grain yield,
number of filled and fissured grains, 1000-grain weight and harvest index as
compared to saturated condition along with the doses of RSC, MM and TC. The
RSC (4 t/ha) was the superior treatment with respect to the growth and yield
components of rice followed by the treatments of TC (2.5 t/ha) and MM (3 t/ha),
irrespective of rice varieties and moisture levels.