Abstract
A field experiment was carried out at the Soil Science Field Laboratory of Bangladesh Agricultural University (BAU), Mymensingh during aman season of 2014 to study the integrated use of banana leaves with inorganic potassium fertilizer on the growth and yield of BRRI dhan49 following Randomized Complete Block Design (RCBD) with eight treatments and three replications. The highest plant height (85.55cm), panicle length (21.46cm), number of effective tillers hill-1 (11.54), number of filled grains panicle-1 (149.53), 1000-grain weight (21.85gm), grain yields (5.66 t ha-1) and straw yield (6.81 t ha-1) were obtained in the treatment T3 and the lowest plant height (77.10cm), panicle length (18.85cm), number of effective tillers hill-1 (8.64), number of filled grains panicle-1 (112.11), 1000-grain weight (19.96gm), grain yields (3.50 t ha-1) and straw yield (4.73 t ha-1) were recorded in the control. It can be recommended to integrated use of 50% K from banana leaves+50% K from MoP on growth and yield of BRRI dhan49.  Â
Highlights
Bangladesh is an agriculture based country where agriculture is the single largest sector and the mainstay of the economy
The results indicated that the combined effect of treatment T3 (50% K from banana leaves + 50% K from MoP) when incorporated was more pronounced in increasing the plant height of Bangladesh Rice Research Institute (BRRI) dhan[49] as compared to application of other treatments
The highest percentage (43.97%) of increased straw yield over control was found in T3 (50% K from banana leaves + 50% K from MoP) and the lowest percentage (25.79%) of increased straw yield over control was found in T8 (100% K from Banana leaves). the results revealed that the straw yield of rice (BRRI dhan49) was markedly influenced by the application of organic manures and chemical fertilizer
Summary
Bangladesh is an agriculture based country where agriculture is the single largest sector and the mainstay of the economy. Soil varies considerably in their inherent capacities to supply nutrients which are gradually declining over time due to intensive cropping with high yielding rice varieties in Bangladesh. It has been using chemical fertilizers year after year for higher yield. Sustainable crop production could be possible through the integrated use of organic manures and chemical fertilizers. Annual potassium rich crops like banana is used as green manure throughout the world It is very common in Bangladesh and its leaves contain substantial amounts of K and other nutrients . The present investigation was undertaken to study the effect of integrated use of banana leaves with inorganic fertilizer on the yield and yield contributing characters of rice
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