Year 2018

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GENOTYPIC VARIATION IN MORPHO-PHYSIOLOGICAL CHARACTERS AND YIELD IN MODERN AMAN RICE VARIETIES
(DEPARTMENT OF AGRICULTURAL BOTANY SHER-E-BANGLA AGRICULTURAL UNIVERSITY DHAKA-1207, 2018-12) MORIUM, SINTHIA
The study was conducted at the Experimental Farm of Sher-e-Bangla Agricultural University (SAU), Sher-e-Bangla Nagar. Dhaka-1207 during the June 2018 to December 2018 to have a comparative study on ten modern rice varieties in Aman season in relation to their growth behavior, leaf chlorophyll content and yield. The experiment consisted of 10 Aman rice varieties namely, BRRI dhan40, BRRI dhan41, BRRI dhan44, BRRI dhan46, BRRI dhan53, BRRI dhan71, BRRI dhan75, BRRI dhan80, BRRI dhan87 and BRRI dhan90. The experimental plots were laid out in randomized complete block design (RCBD) with three replications. Ten (10) genotypes were distributed to each plot of 4 m x 2.5 m size within each block randomly. The highest no. of filled grain per hill was obtained from the verity BRRI dhan80 and the lowest no. of filled grain per hill from BRRI dhan53. The highest no. of unfilled grain per hill was obtained from the verity BRRI dhan71 and the lowest no. of unfilled grain per hill from BRRI dhan87. The maximum days to maturity (134.25) were recorded from BRRI dhan44, while the minimum days to maturity (100.50) was recorded from BRRI dhan41. The maximum number effective tiller hill -1 (16.75) was recorded from BRRI dhan53, whereas the minimum number of effective tillers hill -1 (12.05) was recorded from BRRI dhan44. The maximum number of filled grains panicle -1 (89.90) were recorded from BRRI dhan53, whereas the minimum number of filled grains panicle (75.80) was recorded from BRRI dhan44. The highest weight of 1000-grains (25.71 g) was recorded from BRRI dhan53, while the lowest weight of 1000-grains (19.45 g) was obtained from BRRI dhan75. The highest grain yield (5.45 t ha ) was recorded from BRRI dhan53, whereas the lowest grain yield (3.49 t ha ) was provided by from BRRI dhan44. The highest straw yield (7.97 t ha ) was recorded from BRRI dhan53, whereas the lowest straw yield (6.58 t ha ) was given by BRRI dhan44. So, BRRI dhan53 was superior for Aman season in consideration of yield attributes and yield. -1 -1 -1 -1 -1
PERFORMANCE OF HYBRID AND MODERN INBRED RICE VARIETIES UNDER AEROBIC CONDITION
(DEPARTMENT OF AGRICULTURAL BOTANY SHER-E-BANGLA AGRICULTURAL UNIVERSITY DHAKA-1207, 2018-12) LUCKY, DILRUBA AKTER
The field experiment was conducted at the Research Farm of Sher-e-Bangla Agricultural University, Dhaka during November, 2017 to June, 2018 to study the performance of hybrid and modern rice varieties under aerobic condition. The experimental treatments comprised of five varieties (V 1 = BRRI dhan 29, V 2 = Hybrid-3, V 3 = Moina, V 4 = Nobin and V = Hira-2) and different cultivation methods T 1 =SRI Method, T 2 = raised upland and T = Traditional). The experiment was laid out in Randomized Complete Block Design (RCBD) with 3 replications. The unit size of the plot was 4.0 m × 2.5 m. Data on plant height, number of tillers and leaves hill -1 3 were recorded at 45 DAT, 60 DAT, 75 DAT, 85 DAT and at harvest. And leaf length and leaf breath were at 60 DAT, 75 DAT and 85 DAT. The variety Nobin (V ) provided the highest significant performance in respect of plant height (36.24, 66.01, 82.94, 96.57 and 112.78 cm), number of tillers (6.58, 13.78, 15.58, 18.87 and 14.98), number of effective tillers hill 4 (13.56), leaves hill -1 (20.34, 44.29, 40.83, 54.84 and 50.28), leaf length (38.56, 35.56 and 48.20cm), leaf breath (0.88, 1.39 and 1.68cm), flag leaf length (34.18cm), flag leaf breadth (1.57cm), penultimate leaf length (41.68cm), dry weight of three leaves (0.63 g), penultimate leaf breadth (1.42cm), dry weight of leaves (16.48 g), chlorophyll content (50.36 mg g -1 ), dry stem weight (55.59 g), number of panicle (10.06), panicle height (101.22cm), panicle length (25.60 cm), panicle weight (17.91g), 1000-grain weight (26.14 g), highest grain yield (5.20 t ha ) and highest straw yield (5.20 t ha -1 ). T (traditional method) exhibited the highest significant performance in respect of number of tillers (6.65, 13.68,15.98,15.51 and 14.20), number of effective tillers hill (13.27), number of leaves hill 3 -1 5 -1 (21.13, 45.62, 41.15, 46.20 and 49.26), number of leaves hill (21.13, 45.62, 41.15, 46.20 and 49.26), leaf length (38.50, 35.70 and 46.03cm), leaf breadth (0.82, 1.35 and 1.64cm, flag leaf length (33.24cm) , flag leaf breadth (1.45cm) , penultimate leaf length (38.55cm), penultimate leaf breadth (1.44cm), dry weight of leaves (15.77g), dry weight of three leaves (0.63g), dry stem weight (51.04g), chlorophyll content (50.62 mg g ), number of panicle (8.40), panicle height (96.21cm), panicle weight (16.13g), 1000-grain weight (26.38g), highest grain yield (5.38 t ha -1 ) and highest straw yield (5.54t ha -1 ). The highest plant height obtained from T (raised upland) was recorded 35.44, 61.70, 76.51, 88.31 and 105.27cm. The maximum (1.60) number of effective tillers hill 2 -1 was obtained from T . There was significant effect of variety and aerobic condition. The interaction V 4 T 3 1 showed the highest significant performance in respect of plant height 37.97, 70.17, 51, 87.40, 101.23 and 115.67 cm, number of tiller (7.67, 17.57, 17.07, 19.97 and 18.33), number of effective tillers hill -1 (16.67), number of leaves hill -1 (23.00, 47.67, 53.07, 60.30 and 62.00), leaf length (42.33, 37.67 and 54.13cm), flag leaf length (39.80cm), flag leaf breadth (1.80cm), penultimate leaf length (44.00cm), penultimate leaf breadth (1.82cm), dry weight of leaves (20.50g), dry weight of three leaves (0.80g), dry stem weight (61.10g), chlorophyll content (61.00 mg g -1 ), number of panicle (11.17), panicle height (103.00cm), panicle length (26.73 cm), panicle weight (20.63g), 1000-grain weight (26.23g), highest grain yield (5.60 t ha -1 ) and highest straw yield (5.73 t ha -1 ). The highest leaf length of rice plants that received from V 3 T 3 . So, it may be concluded that the V (traditional) as singly or their interaction were more successful for produce the highest results. 4 -1 -1 (Nobin) and T -1 -1 3
RESPONSES OF BRINJAL TO DIFFERENT PLANT GROWING STRUCTURES AND COMPOSITION OF GROWING MEDIA IN THE ROOFTOP GARDEN
(DEPARTMENT OF AGRICULTURAL BOTANY SHER-E-BANGLA AGRICULTURAL UNIVERSITY DHAKA-1207, 2018-12) NAHAR, TANBIN
This experiment was carried out at the rooftop garden of the Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh from May 2018 to October 2018 to evaluate responses of brinjal to different plant growing structures and different growing media in the rooftop garden. The experiment consisted of two factors, factor A-plant growing structures, viz., S 1 = Plastic pot, S = Earthen pot and factor B-six different plant growing medium viz. M 0 2 =Soil 100%(w\w) with Recommended Dose of Inorganic Fertilizers (RDIF)/ (control), M 1 =Soil 80% (w\w) +20% Cow dung (w\w) along with RDIF, M =Soil 60% (w\w) + Cow dung 40% (w\w) along with RDIF, M =Soil 90% (w\w) +10% Vermicompost (w\w) along with RDIF, M 4 3 =Soil 80% (w\w) +20% Vermicompost (w\w) along with RDIF and M =Soil 70% (w\w) +20%Cowdung (w\w) +10% Vermicompost (w\w) along with RIDF. The factorial experiment was laid out in a Completely Randomized Design (CRD) with four replications. The experimental result such as morphological character and yield of brinjal significantly influenced by different plant growing structures and plant growing media and their combination. As for plant growing structures, the plastic pot (S ) gave the highest plant height, number of leaves per plant, branch per plant, flowers per cluster, flowers per plant, fruit length, fruit diameter, fruits per plant. The highest yield of fruits per plant (740.16 g) was obtained from plastic pot(S 1 ) and Soil 70%(w\w) +20% cow dung(w\w) +10% vermicompost(w\w) along with RDIF marked as S 1 M . The lowest yield of fruits per plant (144.72 g) was obtained from earthen pot and Soil 100% (w\w) along with RDIF marked as S 5 2 M . Considering the stated findings, it may be concluded that BARI Begun-8 planted in plastic pot and Soil 70% (w\w) +20% Cow dung (w\w) +10% Vermicompost (w\w) along with RDIF would be beneficial for increasing the yield of brinjal during kharif season in the rooftop garden under the climatic conditions of SAU. 0 2 5 2
TILLERING PATTERN, LEAF CHARACTERISTICS AND YIELD OF TEN MODERN RICE VARIETIES IN AMAN SEASON
(DEPARTMENT OF AGRICULTURAL BOTANY SHER-E-BANGLA AGRICULTURAL UNIVERSITY DHAKA-1207, 2018-12) HOWLADER, MD RUBEL
The study was conducted at the experimental farm of Sher-e-Bangla Agricultural University (SAU), Sher-e-Bangla Nagar. Dhaka-1207 during the period from June 2018 to December 2018 to have a comparative study on ten modern rice varieties in Aman season in relation to their growth behaviour, leaf chlorophyll content and yield. The experiment consisted of 10 Aman rice genotypes (BRRI hybrid 4, BRRI dhan32, BRRI dhan33, BRRI dhan39, BRRI dhan49, BRRI dhan52, BRRI dhan54, BRRI dhan56, BRRI dhan57, BRRI dhan62). The experimental plots were laid out in randomized complete block design (RCBD). The field was divided into three blocks; representing three replications. Row to row and plant to plant distances were 25cm and 20cm respectively. Ten (10) genotypes were distributed to each plot of 4 m x 2.5 m size within each block randomly. The highest no. of filled grain per hill was obtained from the variety BRRI dhan56 and the lowest no. of filled grain per hill from BRRI dhan49. The highest no. of unfilled grain per hill was obtained from the variety BRRI dhan52 and the lowest no. of unfilled grain per hill from BRRI dhan49. The highest 1000 seed weight per hill was obtained from the variety BRRI hybrid 4 (28.16 g) which is statistically similar with BRRI hybrid 4 and the lowest 1000 seed weight per hill from BRRI dhan54. The highest grain yield per hill was obtained from the variety BRRI dhan33 (52.93 g) and the lowest grain yield per hill from BRRI dhan56 (29.9 g). The highest no. of unfilled grain per hill was obtained from the variety BRRI dhan54 (30.4 g) and the lowest no. of unfilled grain per hill from BRRI dhan57 (18.5 g). The highest biological yield per hill was obtained from the variety BRRI dhan32 (94.1 g). So, the variety BRRI dhan33 was better for higher yield and quality among the test modern Aman rice varieties.
EFFECT OF DROUGHT ON MORPHO-PHYSIOLOGICAL TRAITS OF CHICKPEA (Cicer arietinum L.) UNDER NON- IRRIGATED CONDITION
(DEPARTMENT OF AGRICULTURAL BOTANY SHER-E-BANGLA AGRICULTURAL UNIVERSITY DHAKA-1207, 2018-12) ISLAM, MD. JAHIRUL
The present experiment was conducted in the farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh during rabi season (from October 2018 to March 2019) to study the effect of drought on morpho-physiological traits of chickpea (Cicer arietinum L.). The experiment was laid out in a Randomized Complete Block Design with three replications and treatment comprised of seven chickpea varieties evaluated on drought situation under non-irrigated conditions. The collected data were statistically analyzed for evaluation of the treatment effect. BARI Chola-9 (V4) produced the highest plant height, BARI Chola-3 (V1) produced the highest number of branches, Binasola-4 (V7) produced the highest number of pods (32.20) per plant, highest number of filled pods and BARI Chola-3 (V1) produced highest number of unfilled pods. BARI Chola-4 (V2) produced the highest (14.60 g) 100-seed weight which was statistically similar with BARI Chola-10 (V5) and BARI Chola-9 (V4). Binasola-4 (V7) produced the highest (334.33 kg ha -1 ) seed yield which was statistically similar with BARI Chola-7(V3). The highest root length and the highest shoot length were observed from the genotype BARI Chola-3 (V1) respectively 17.01 cm and 61.79 cm. The highest plant fresh weight can be observed from the genotype BARI Chola-9 (V4) 3116.67 kg ha -1 and the highest plant dry weight BARI Chola-9 (V4) 317.1 k ha . Binasola-4 (V7) produced the highest (2523.1 kg ha -1 ) biological yield and Binasola-3 (V6) produced the highest (91%) harvest index. The highest (49.50%) and the lowest (44.16%) SPAD value of leaf produced respectively from BARI Chola-10 (V5) and Binasola-4 (V7) at 60 DAP. BARI Chola-4 (V2) produced the highest (55.37%) membrane stability at 80 DAP while Binasola-4 (V7) produced the lowest (48.88%). BARI Chola-3 (V1) produced the highest (375.67 mmol m -2 s -1 ) and stomatal conductance at 80 DAP while Binasola-4 (V7) produced the lowest (169.90 mmol m-2s-1). BARI chola-3 (V1) was considered as drought tolerant varieties as they perform better to drought situation under non-irrigated condition.
INFLUENCE OF MORPHO-PHYSIOLOGICAL CHARACTERS AND YIELD OF OKRA THROUGH APPLICATION OF ZINC AND BORON
(DEPARTMENT OF AGRICULTURAL BOTANY SHER-E-BANGLA AGRICULTURAL UNIVERSITY DHAKA -1207, BANGLADESH, 2018-12) JAHAN, NUSRAT
The study was carried out at the Central Farm of Sher-e-Bangla Agricultural University, Dhaka during the period from April to August 2018 to study the influence of morpho-physiological characters and yield of okra (BARI Dherosh- 1). The treatments of the experiment was T ii 0 (control), T (20 kg Zn ha -1 ), T 2 (30 kg Zn ha -1 ), T 3 (10 kg B ha -1 ), T 4 (20 kg B ha -1 ), T + 10 kg B ha -1 ), T 6 (20 kg Zn ha -1 + 20 kg B ha -1 ), T 7 5 1 (20 kg Zn ha (30 kg Zn ha + 10 kg B ha -1 ) and T 8 (30 kg Zn ha -1 + 20 kg B ha -1 ). The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Results revealed that the highest plant height (118.30 cm) was recorded from T (30 kg Zn ha -1 + 20 kg B ha -1 ) but the highest number of leaves plant (30.06) was recorded from T 7 (30 kg Zn ha -1 + 10 kg B ha -1 ). Results also revealed that the highest leaf area index, (298.60) and SPAD value (65.73), single fruit weight (14.14 g), fruit length (15.12 cm), fruit diameter (1.96 cm), % fruit dry matter (9.26 g), number of fruits plant -1 (36.12), fresh fruit weight plant (510.70 g), fruit yield plot -1 (7.75 kg) and fruit yield ha -1 (17.22 t ha -1 -1 -1 -1 8 ) were found from T (30 kg Zn ha -1 + 10 kg B ha -1 ) treatment, whereas the control treatment (T ) showed lowest performance for the respected parameters. From the above results it can be said that 30 kg Zn ha -1 with 10 kg B ha -1 combination may be helpful for okra cultivation in the field level to increase okra production.
EFFECT OF CALCIUM (Ca) AND SULPHUR (S) ON THE MORPHO-PHYSIOLOGICAL CHARACTERS AND YIELD OF MUNG BEAN (Vigna radiata L.)
(DEPARTMENT OF AGRICULTURAL BOTANY SHER-E-BANGLA AGRICULTURAL UNIVERSITY DHAKA-1207, 2018-12) BASRI, MD. HASAN
The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from January, 2018 to July, 2018 to find out the effect of Calcium (Ca) and Sulphur (S) on the morpho-physiological characters and yield of mung bean. BARI mug6, high yielding variety was used in this experiment as the test crop. The tallest plant was recorded as 34.05 cm, 47.42 cm and 52.27 cm from T 6 (100 ppm Ca +100 ppm S), T (100 ppm Ca) and T 5 ii 1 (100 ppm Ca +50 ppm S) at 30 DAS, 45 DAS and 60 DAS respectively. The highest number of leaves per plant (6.67, 8 and 9.07 respectively) were recorded from the treatment of T (100 ppm Ca + 50 ppm S), T 1 (100 ppm Ca) and T (100 ppm Ca). The highest number of branches per plant (0.80, 1.20 and 1.60 respectively) were observed from T 1 5, T 2 and T . The highest days to flowering (32.3) was observed from T 0 2 . The highest SPAD values at 30 DAS was 49.50 for T , at 45 DAS was 69.88 for T 2 and at 60 DAS 72.74 for T 2 . The highest leaf area (132.49 cm ) was obtained from T 3 (50 ppm S). The highest number of flowers per plant (40.36) was observed from T (200 ppm Ca + 50 ppm S). The highest number of pods per plant (28.33) was observed from T (200 ppm Ca + 50 ppm S). T (200 ppm Ca + 50 ppm S) treated plants took the minimum number of days to first ripening of fruit and to 50 % maturity of fruit and T 7 (100 ppm Ca + 50 ppm S) treated plants to 100 % maturity of fruit 49.33, 67.00 and 70.66 days respectively. The highest no. of fertile seed was observed as 145.40 for T 0 5 . The highest weight of 1000 seeds (51g) was recorded from T (100 ppm Ca + 50 ppm S). The highest seed yield 1615.13 kg/ha was gathered from T 5 5 (100 ppm Ca + 50 ppm S). Whereas the minimum yield 1041.31 kg/ha given by T (no treatment) which was statistically similar with 1122 kg/ha of T (50 ppm S). The highest harvest index 62.86% was gathered from T 8 3 (200 ppm Ca + 100 ppm S) which was statistically similar to 61.65% recorded from T (100 ppm Ca + 50 ppm S). Whereas the minimum harvest index 51.04% given by T 1 5 (100 ppm Ca) . It can be concluded from the above study that application of the treatment T (100 ppm Ca+ 50 ppm S ) was found to be the most suitable combination for the higher performances of mung bean.
EFFECT OF POTASSIUM IN MITIGATING ADVERSE EFFECT OF SALT STRESS ON GROWTH, DEVELOPMENT AND YIELD OF RICE PLANT (Oryza sativa L.)
(DEPARTMENT OF AGRICULTURAL BOTANY, 2018) ROY, RIPON KUMAR
A pot experiment was conducted at the net house of the Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, during Boro rice cropping season of the year of 2017-18 to observe the effect of potassium in mitigating adverse effect of salt stress on growth, development and yield of rice plant (Oryza sativa L.). The experiment was conducted using two salinity levels with potassium viz. S 0 = Control, S 1 = 4dSm -1 salt, S 1 K 1 = 4dSm -1 salt + 80 ppm potassium, S 1 K 2 = 4dSm -1 salt + 160 ppm potassium, S 2 = 6 dSm -1 , S 2 K 1 = 6 dSm + 80 ppm potassium, S 2 K 2 = 6 dSm -1 + 160 ppm potassium. The experiment was conducted in Randomized Complete Block Design (RCBD) having one factor with three replications. The results and the effect on morphological characters indicated that all parameter were influenced by salinity and potassium. Among 3 salinity level (0, 4 & 6 dSm -1 ), the damaging effect was found more in higher stress (6 dSm ).But potassium supplementation along with salt greatly reduced the damaging effect of salt. Out of the 2 levels of potassium 160 ppm potassium significantly reduced the damaging effect of salt. Therefore, for cultivation of BRRI dhan67 under saline condition 160 ppm potassium application could be a better practice for getting higher yield.
MORPHOPHYSIOLOGICAL AND YIELD RESPONSES OF RICE PLANT (Oryza sativa L.) UNDER SALT STRESS AND MITIGATION BY CALCIUM
(DEPARTMENT OF AGRICULTURAL BOTANY, 2018) AKIV, SOULIN
A pot experiment was conducted in the Net House of Department of Agricultural Botany of Sher-e-Bangla Agricultural University, Dhaka, during the Boro season of (December-June) 2017-2018 to evaluate the response of BRRI dhan67 to calcium supplementation at different salinity levels. The two factors experiment was laid out in Completely Randomized Design (CRD) with three replications. Factor A is different levels of salinity induced by sodium (Na + ) viz. 0, 4, 6 and 8 dSm and factor B is different concentration of Ca 2+ viz. 0, 80, 160 ppm. The total treatment combinations were 12 (4×3). The experimental results showed that salt stress significantly affects morphology, physiology, yield contributing characters and yield of rice. Plant height and tiller number per plant were reduced with increased levels of salinity mostly at 6 and 8 dSm -1 . Salinity also adversely affected the leaf, root and shoot dry weight (gm), leaf area (cm 2 ), leaf chlorophyll content, leaf relative water content, leaf membrane stability, days to flowering, number of panicle plant , panicle length (cm), number of filled grains panicle -1 -1 , number of unfilled grains panicle , 1000-grain weight (g) and also grain yield g plant -1 . Exogenous application of Ca 2+ mostly at 8 dSm significantly mitigates the adverse effects of salinity on plant biomass production or morphology, physiology and yield, leaf, root and shoot dry weight (g), leaf area (cm 2 ), leaf chlorophyll content, leaf relative water content, leaf membrane stability, number of panicle plant -1 , panicle length (cm), number of filled grains panicle -1 , number of unfilled grains panicle -1 , 1000-grain weight (g) and grain yield (g) plant -1 were increased and days required for flowering decreased with the application of calcium than the control or without calcium. The yield of rice is gradually decreasing with the increasing levels of salinity. Interestingly, the rate of reduction of yield of rice was decreased with Ca 2+ in response to different saline conditions and the lowest yield was recorded at the highest salinity (8 dSm ) along without Ca 2+ . The present study also showed that the highest yield recorded without salt and 160 ppm Ca 2+ treatment combination which was statistically dissimilar to control treatment combination in most of the cases. Application of both 80 and 160 ppm of calcium showed mitigating effect against salt stress but 160 ppm of calcium application showed better result than 80 ppm of calcium with or without salt (0, 4, 6, 8 dSm -1 level of salt) in every cases. These results are consistent with the findings of regulation of ion uptake in presence or absence of Ca stress. Therefore, this experiment suggests that Ca 2+ 2+ -1 -1 -1 at different levels of Na can effectively mitigate the deleterious effect of Na + stress in rice cultivation and increase the potential salt stress tolerance in BRRI dhan67.
EFFECT OF FOLIAR APPLICATION OF GIBBERELLIC ACID ON MORPHO-PHYSIOLOGICAL CHARACTERS AND YIELD OF OKRA (Abelmoschus esculentus L.)
(DEPARTMENT OF AGRICULTURAL BOTANY, 2018) G. M. RABBANE
The experiment was carried out in the farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from March to August 2018 to study the effect of foliar application of gibberellic acid on morpho-physiological characters and yield of okra. The experiment considered of two factors. Factor A – two okra variety; V 1 = BARI dheros-1 and V 2 = Lal teer hybrid dheros and Factor B: Gibberellic acid (GA 3 ) - 4 levels; G 0 = Control (0 ppm GA 3 ), G 1 = 50 ppm GA 3 ii , G 2 = 100 ppm GA 3 = 150 ppm GA 3 and G 4 = 200 ppm GA 3 . The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Data on different growth, yield components and yield of okra were recorded. Different growth and yield parameters were significantly influenced by variety and GA 3 and also with their combinations. Results showed that the variety V 2 (Lal teer hybrid dheros) gave highest yield and yield contributing parameters compared to V 1 (BARI dheros-1). Again, regarding, GA 3 effect, the treatment G 2 (100 ppm GA 3 ) it gave the best performance on yield and yield contributing parameters. Considering treatment combination of variety and GA 3 , the highest SPAD value (68.35 at 50 DAS), length of fruit (11.70 and 14.90 cm at 60 and 90 DAS, respectively), diameter of fruit (1.86 and 1.92 cm at 60 and 90 DAS, respectively), number of fruits plant (24.60), fresh weight of fruits plant -1 (348.20 g), fruit yield plot -1 -1 (6.26 kg) and fruit yield ha (17.88 t) was obtained from the treatment combination of V 2 G 2 whereas the lowest SPAD value (40.65 at 50 DAS ), length of fruit (6.67 and 8.87 cm at 60 and 90 DAS, respectively), diameter of fruit (1.34 and 1.42 cm at 60 DAS and 90 DAS, respectively) number of fruits plant -1 (24.60), fresh weight of fruits plant (198.70 g), fruit yield plot -1 (3.47 kg) and fruit yield ha -1 (9.92 t) were observed from the treatment combination of V 1 G O. These results suggested that gibbrellic acid increased the yield of okra.

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