The experiment was carried out at two project sites at Kurigram and Gaibandha during 2017 kharif season to evaluate the yield performances of some BJRI kenaf varieties in comparison to local variety. BJRI varieties (HC-2, HC-95, BJRI kenaf-3 and BJRI kenaf-4) were tested against local variety (Dumka-2) as control. The experiment was laid out in a randomized complete block design with ten dispersed replications. Significant seed yield difference was observed among the varieties and different locations. Results revealed that the average highest seed yield was recorded as 1029.33 and 1043.00 kgha-1 from BJRI Kenaf 3 in Ulipur and Sundarganj sites, respectively. The highest seed germination percent was recorded also from BJRI Kenaf 3 (85.33% and 87.50% at Ulipur and Sundarganj sites, respectively). The other quality parameters (seed vigor index and field emergence) do not differ significantly among the studied varieties.

Key words: Kenaf, seed yield, seed quality, char land.

Introduction

Seed is the most vital input for crop production. In Bangladesh, around 0.4 million hectares of land is now devoted to kenaf cultivation producing 0.08-0.09 million tons per annum with an average yields of 2.0- 2.5 tons ha-1 (Mostofa, 2012). The annual requirement of seeds of Kenaf in Bangladesh is estimated to be approximately 480 tons (Mollah et al, 2015). But only a few tons of quality seeds are produced in organized way and the rest are supplied by indigenous sources. In response to increasing farmer demand for better varieties and quality seed, more than 5 improved varieties of kenaf crop with high yield potential were released by BJRI, but these varieties are not extensively cultivated in different parts of the country mainly due to non-availability of seed. The seeds supplying through informal sources is not recognized as quality seeds because in this system seeds are not produced by following the proper steps of seed technology. The use of such poor quality seed is one of the major factors responsible for lower yield. Alongside lack of knowledge about seed production technology also constrained the production and quality of seed. So supply of quality seed to the farmers may be the most essential concern in prioritizing different issues on development of agriculture. For increasing quality seed supply to the farmers and to meet farmers own demand, initiative was taken to produce seed at farm level involving farmers in the production process. The quality of Kenaf seeds depends on many pre and post-harvest factors, such as cultivation techniques, seed maturity, harvest, threshing, and processing. Seed processing is also a fundamental component in any planned seed production programme, which aims at improving the seed characteristics (Araujo et al., 2008). With this context in view, a prograamme on late season kenaf seed production with improved management has been undertaken in the project areas mainly to determine the seed yield maintaining quality and to convene farmers demand locally.