EFFECTS OF VARIETY AND HUMIC ACID ON MORPHO-PHYSIOLOGICAL PARAMETERS AND YIELD OF MUSTARD

Abstract

The experiment was conducted in the Research Farm of Sher-e-Bangla Agricultural University (SAU), Sher-e-Bangla Nagar, Dhaka-1207 during the period of October 2017 to February 2018 to study effects of variety and humic acid on morpho-physiological parameters and yield of mustard. The experiment comprised of two factors; Factor A: Different mustard varieties (4 varieties)- i) V 1 : BARI Sarisha 9, ii) V 2 : BARI Sarisha 11, iii) V 3 : BARI Sarisha 14, iv) V 4 : BARI Sarisha 15; and Factors B: Different levels of humic acid (H) (4 levels)- i) H 0 : 0 kg fertilizer (control condition), ii) H 1 : Recommended dose of organic + inorganic fertilizer , iii) H 2 : 12 kg HA ha -1 , iv) H 3 : Recommended dose of organic + inorganic fertilizer + 12 kg HA ha -1 . The two factors experiment was laid out in Randomized Complete Block Design (RCBD) with three replications.

Data were recorded on morpho-physiological characters, yield attributes and yield of mustard and observed statistically significant differences for different treatments.

In case of different varieties, the tallest plant at 30, 40, 50 DAS (days after sowing) and at harvest 50.69, 97.65, 113.16 and 128.19 cm were recorded from V 2 , BARI Sarisha 11, while the shortest plant 28.64, 67.59, 75.58 and 84.87 cm, from V 3 , BARI Sarisha 14, respectively. The highest number of siliqua plant (149.22) was found from V 2 , while the lowest number (78.47) from V 4 BARI Sarisha 15. The highest seed yield (2.45 t ha -1 ) was found from V 2 -1 , while the lowest (1.36 t ha ) from V 1 , BARI Sarisha 9. For different humic acid, the tallest plant 39.32, 80.72, 94.61 and 105.91 cm were found from H 3 , Recommended dose of organic + inorganic fertilizer + 12 kg HA ha -1 , whereas the shortest plant 32.70, 72.91, 79.54 and 92.22 cm from H 0 ,

0 kg fertilizer (control condition) at 30, 40, 50 DAS and at harvest, respectively. The highest number of siliqua plant -1 (112.00) was recorded from H 3 , whereas the lowest (93.55) from H 0 . The highest seed yield (2.04 t ha ) was observed from H 3 , whereas the lowest (1.32 t ha -1 ) from H 0 . Due to the interaction effect of varieties and humic acid, the tallest plant 55.64, 103.32, 122.42 and 139.39 cm were recorded V 2 H 3 , BARI Sarisha 11 and Recommended dose of organic + inorganic fertilizer + 12 kg HA ha -1 , while the shortest plant 27.40, 67.66, 68.56 and 77.81 cm from V 3 H 0 treatment combination, BARI Sarisha 14 and 0 kg fertilizer (control condition) at 30, 40, 50 DAS and at harvest, respectively. The highest number of siliqua plant -1 (163.27) was recorded from V 2 H 3 , while the lowest (72.27) from V 4 H 0 treatment combination. The highest seed yield (2.85 t ha -1 ) was recorded from V 2 H 3 and the lowest (1.03 t ha ) from V 1 H 0 treatment combination. BARI Sarisha 11 and recommended dose of organic + inorganic fertilizer + 12 kg HA ha -1 gave the highest yield by improving morphophysiological traits and yield contributing characters of mustard under the climatic

and edaphic condition of SAU.

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