9-2-7 Off Season Seed Yields of BJRI Tossa Pat-7 and BJRI Tossa Pat-5 as affected by sowing dates and locations

Jannatul Ferdous and M. Mahbubul Islam*

*Corresponding author email: mahbub_agronomy@yahoo.com

Abstract

The experiment was conducted at two locations; Manikganj and Jessore to determine seed yield performance of two tossa jute varieties (BJRI Tossa Pat-7 and BJRI Tossa Pat -5) sown at five sowing dates viz., 30 July, 15 August, 30 August, 15 September and 30 September during 2016-17. The experiment was laid out in RCB design with three replications. The cultivar BJRI Tossa Pat-5 was used as control. Results revealed that BJRI Tossa Pat-7 yielded higher at Manikganj (766.67 kg ha-1) which was 13% higher than that as was obtained at Jessore (678.33 kg ha-1. The respective seed yield as was shown by BJRI Tossa Pat -5 at these two sites were 653.87 and 584.67 kg ha-1. The higher seed yield of the BJRI Tossa pat -7 was attributed to higher values of seed weight per plant (5.46-5.85 g) as compared to the BJRI Tossa pat-5 (3.62-3.80 g). BJRI Tossa Pat-7 sown on 15th and 30th August at Manik Gonj showed significantly higer seed yields (989-995 kg) compared to those (1045 and 973.33 kg) of BJRI Tossa Pat-7 and BJRI Tossa Pat-5 sown at Jessore. BJRI Tossa Pat-7 sown on 15th and 30th August at Manik Gonj had also significantly higher values in yield attributes such as number of pods/plant (34.9-37.77), seeds/pod (179-185) and seed weight per plant (7.03-9.23 g). The lowest seed yield (298.33 kg) was obtained BJRI Tossa Pat-7 sown at Jessore on 15th September which was attributed to the lowest values number of pods per plant (21.17-26.43), seeds/pod (148-161) and seed weight per plant (4.43 – 6.44 g). 1000 seed weight and germination % significantly varied at Manikgonj while these two seed attributes along with seed moisture after harvest was not significantly varied due to the treatments. At Manik Gonj the heaviest seeds (1.94 g/1000) was obtained with v2s3 and significantly higher germination (89-92.67%) were obtained with v2s2 and v2s3 treatments.

Keywords: Jute, sowing date, seed production, yield, quality, location

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J. Expt. Biosci.9(2) July 2018

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5-2-15-Amin et al

EVALUATION OF SEED TREATMENT AGAINST SHEATH BLIGHT DISEASE OF HYBRID RICE UNDER NATURAL EPIPHYTIC CONDITION

M. R. Amin, A. N. F. Ahmmed*, M. S. Islam, S. R. Chowdhury and M. A. Khaleque

*Corresponding author; Email: nomanfarook@yahoo.com

Abstract

An investigation was carried out to evaluate the efficacy of some selected seed treatments on the incidence and severity of sheath blight (ShB) disease and yield contributing characters of imported hybrid rice in the Seed Health Laboratory of the Department of Plant Pathology and the field of Sher-e-Bangla Agricultural University farm, Dhaka, Bangladesh during the period of November 2009 to December 2010. Eleven seed treating agents viz. untreated control, sun drying, polythene solarization, brine solution, neem leaf extract (Azadirachta indica), allamanda leaf extract (Allamanda cathartica), hot water treatment, Provax 200 (carboxin), Bavistin 50 WP (carbendazim), Dithane M 45 (mancozeb) and Trichoderma harzianum were evaluated against the incidence and severity of sheath blight disease at three growth stages (flowering, milking and maturity) and yield contributing characters. It was observed that disease incidence and severity was gradually increased from flowering stage to maturity stage with the age of the plant and minimum incidence and severity gave the maximum yield. Disease incidence and severity caused by Rhizoctonia solani varied from 15.87% to 20.30% and 6.47 to 7.80 (0-9 scale), respectively at maturity stage where hot water treatment showed the best result followed by Provax 200. The highest values of plant height, panicle length, effective panicle and filled grain were recorded under the fungicidal seed treatments followed by hot water treatment. The highest grain yield (10.40 t ha^-1) was recorded under Dithane M 45 followed by Bavistin 50 WP and Provax 200. The lowest grain yield (7.27 t ha^-1) was found under polythene solarization which was statistically identical with untreated control.

Key words: Seed treatment, hybrid rice, seed borne diseases and sheath blight disease.

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Return Volume: Journal of Experimental Biosciences 5(2): July 2014

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