Impact of nutrient management on the yield performance of some aromatic fine rice (Oryza sativa L.) varieties in Boro season

Abstract

to study the impact of nutrient management on the performance of aromatic fine rice in Boro season. The experiment comprised three varieties viz., BRRI dhan50, Basmati and BRRI dhan63; and seven nutrient managements viz., poultry manure @ 5 t ha-1 , recommended dose of chemical fertilizers (i.e. 250, 126, 120, 100 and 10 kg N-P-K-S-Zn, respectively ha-1), 25% less than recommended dose of chemical fertilizer + poultry manure @ 2.5 t ha-1 , 50% less than recommended dose of chemical fertilizer + poultry manure @ 5 t ha-1 , vermicompost @ 10 t ha-1 , 25% less than recommended dose of chemical fertilizer + vermicompost 5 t ha-1 , 50% less than recommended dose of chemical fertilizer + vermicompost @ 10 t ha-1. The experiment was laid out in a randomized complete block design with three replications. The results revealed that variety, nutrient management and their interaction exerted significant influence on yield components and yield of aromatic fine rice in Boro season. The highest grain yield (4.09 t ha-1), straw yield (6.20 t ha-1) and harvest index (39.37%) were obtained in BRRI dhan63 while the lowest grain yield (3.44 t ha-1) and harvest index (36.54%) were found in Basmati. In case of nutrient management, the highest grain yield (4.31 t ha-1) was recorded in recommended dose of chemical fertilizers (i.e. 250, 126, 120, 100 and 10 kg N-P-K-S-Zn, respectively ha-1) which was as good as 25% less than recommended dose of chemical fertilizer + vermicompost @ 5 t ha-1 and 25% less than recommended dose of chemical fertilizer + poultry manure @ 2.5 t ha-1 while the lowest one (2.74 t ha-1) was found in vermicompost @ 10 t ha-1. In case of interaction, the highest grain yield (5.30 t ha-1) was obtained in BRRI dhan63 along with 50% less than recommended dose of chemical fertilizer + vermicompost @ 10 t ha-1 while the highest straw yield (7.20 t ha-1) was produced in BRRI dhan63 fertilized with recommended dose of chemical fertilizers (i.e. 250, 126, 120, 100 and 10 kg N-P-K-S-Zn, respectively ha-1). Therefore, it can be concluded that BRRI dhan63 can be grown with 50% less than recommended dose of chemical fertilizer + vermicompost @10 t ha-1 in Boro season to obtain the highest grain yield.

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“…The highest number of total tillers hill -1 and effective tillers hill -1 are probably responsible for higher straw yield in BRRI dhan50 compared to other varieties. The results were associated with the findings by Sarkar et al (2014) and Adhikari et al (2018) concerning the varietal influence on above mentioned characteristics. The longest panicle (21.35 cm) and number of total spikelets panicle -1 (106.8) were found in Basmati which was at par with BRRI dhan50 while the lowest one was recorded in BRRI dhan63.…”

“…Aromatic rice has great potential to attract rice consumer for its taste and deliciousness, and high price to boost up the economic condition of the rice growers. In Bangladesh, a number of fine rice cultivars such as Chinisagar, Badshabhog, Kataribhog, Kalizira, Tulsimla, Dulabhog, Basmati, Banglamati (BRRI dhan50), BRRI dhan34, BRRI dhan37, BRRI dhan38, BRRI dhan63, Binadhan-9 and Binadhan-13 are grown as aromatic rice (Adhikari et al 2018). Most of the aromatic rice varieties are the traditional type, photoperiod sensitive, and are grown during transplanted Aman season in the rainfed lowland ecosystem [Islam et al 1996b;Kabir et al 2004].…”

Influence of Spacing of Planting on the Yield Performance of Some Aromatic Rice Varieties in Boro Season

“…Grain and straw yields differences might be due to genetic make-up of the varieties. Grain yield differed due to varietal differences was reported elsewhere (Halder et al, 2018;Jisan et al, 2014;Adhikari et al, 2018). The highest (8.56 t ha -1 ) and lowest biological (8.26 t ha -1 ) yield were recorded in Basmati and BRRI dhan63, respectively while the highest harvest index (47.38%) was obtained in BRRI dhan50 and the lowest one from Basmati (Table 1).…”

Effect of Water, Nutrient and Weed Management on The Yield and Quality of Aromatic Boro Rice (CV. BRRI dhan50)

“…Aromatic rice contributes a small portion (10%) but an important subgroup of rice production. In recent years, aromatic rice has been introduced to the global market because of its taste, deliciousness and high price (Adhikari et al, 2018). The yield of fine rice is lower than that of coarse and Paul et al…”