EFFECT OF TEXTILE WASTEWATER ON PHYSIOLOGICAL ATTRIBUTES, GRAIN QUALITY AND YIELD OF RICE

Abstract

The present investigation to study the effect of textile wastewater on physiological attributes, grain quality and yield of rice” was conducted from February, 2019 to June, 2019 at the Research Farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The experiment comprised of two factors; viz. Factors A: Two rice varieties (BRRI dhan29 and BRRI Hybrid dhan2) and Factor B: Five different concentration of textile waste water (80%, 60%, 40%, 20% industrial wastewater and no wastewater (0%)). The pot experiment was laid out in 2 factors Randomized Complete Block Design with three replications. Different treatment combinations expressed significant differences due to their interaction effect on morphological, physiological parameters, yield attributing traits and yield. In case of varietal performance, the taller plant (90.40 cm) and more sterile spikelet panicle -1 (30.13) were observed in BRRI dhan29 variety. Grater total dry mater (14.84 g), absolute grain growth rate (6.91), leaf area (34.31cm 2 ), SPAD value (46.13), number of spikelet panicle -1 (200.6), weight of 1000 grain (24.60 g), grain yield (3.91 t ha -1 ), straw yield (4.12 t ha -1 ) and harvest index (48.42%) were found in BRRI Hybrid dhan2 variety. Among the waste water treatments, the tallest plant (91.33 cm), the maximum total number of tillers hill (27.00), number of leaves hill -1 (28.00), dry mater (19.97 g), absolute grain growth rate (7.10), leaf area (38.53 cm 2 ), SPAD value (48.13), total number of spikelet panicle -1 (283.5), weight of 1000 grain (26.63 g), grain yield (5.26 t ha -1 ), straw yield (5.40 t ha -1 ), harvest index (49.35%) were recorded from T 0 (no waste water). Whereas, maximum sterile spikelet panicle -1 (37.68) was recorded from T 1 (using 80% industrial waste water for irrigation). The tallest plant (93.33 cm), the maximum number of total tillers hill -1 (27.67), number of leaves hill -1 (29.33), dry mater (21.41 g), absolute grain growth rate (8.24), leaf area (39.47 cm 2 ), SPAD value (49.13), total number of spikelet panicle -1 (335.5), weight of 1000 grain (28.00g), grain yield (5.40 t ha -1 -1 ), straw yield (5.58 t ha ) and harvest index (49.52%) were recorded from the treatment combination V 2 (BRRI Hybrid dhan2 + no waste water). Whereas, maximum sterile spikelet panicle -1 (39.42) was recorded from the treatment combination V 1 T 1 (BRRI dhan29 + using 80% industrial water for irrigation).

T 0 -1