EVALUATION OF FOLIAGE APPLIED BORON ON GROWTH, YIELD ATTRIBUTES AND YIELD OF AROMATIC RICE

Abstract

The field experiment was conducted at the research field of Department of Agronomy, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, during the period from July 2023 to December 2023 in aman season to observe the growth and yield performance of aromatic rice in response to variety and level of Boron. The experiment comprised of two factors viz. factor A: Varieties; V1 = katarivog, V2 = Kalizira and V3 = Tulsimala; factor B: Levels of Boron; T1 = No application of boron, T2 = 100 ppm, T3 = 200 ppm, T4 = 300 ppm. The experiment was laid out in a RCBD design with three replications. Different variety had significant influenced on growth, yield and yield contributing parameters. The highest plant height (59.92, 108.07, 137.98 and 152.77 cm at 30, 60, 90 DAT and at harvest respectively) was achieved from the variety V2 (Kalizira). The highest number of tillers hill-1 (12.73, 22.75, 28.07 and 22.72 at 30, 60, 90 DAT and at harvest respectively) was obtained from the variety V2 (Kalizira). The highest number of panicles hill-1 (29.98), panicles length (26.83cm), effective tiller (22.45), was found from V2 (Kalizira). On the Other hand different rates of boron foliar application had also significant influenced on growth, yield and yield contributing parameters. The highest number of tillers hill-1 (14.84, 24.82, 29.78 and 22.55 at 30, 60, 90 DAT and at harvest respectively), panicle length (25.602 cm), number of effective tillers hill-1 (21.43), was obtained from T 3 treatment. Again the highest 1000-grains weight (11.87 g), grain yield (3.32 t ha-1), straw yield (7.56 t ha-1), biological yield (10.88 t ha-1), harvest index (31.26%) was obtained from T3 treatment. Interaction effect of variety and splitting different rates of boron as foliar application had also significant influenced on growth, yield and yield contributing characters of aromatic rice. The highest grain yield (3.430 t ha-1) from V2T3 and the lowest yield (2.14 t ha-1) obtained from V3T1 from the combined effect of varieties and Different levels of B doses. The results indicate that the best performing kalizira aromatic rice variety in Bangladesh would benefit by applying 200 ppm of boron.