Md. Shoriful Islam
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh
Mst. Sarmin Akter Ranu
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh
Parvin Akter Bithy
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh
Mohammad Jony
Department of Genetics and Plant Breeding, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh
Shamim Ara Sumi
Department of Biotechnology, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh
Md. Mofizur Rahman
Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh
Mohidul Islam Mia
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh
Tomato, Growth hormones, GA3, Zinc
Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207
Crop-Soil-Water Management
Tomato, Hormone
The field experiment was conducted in the experimental farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, and Dhaka-1207 during the period from October, 2017 to March, 2018. The location of the experimental site was at 23° 74/ N latitude and 90° 35 / E longitude with an elevation of 8.45 meter from the sea level. In the experiment, Tomato variety "BARI Tomato- 14" was used. It was a high yielding, heat tolerant and indeterminate type variety. The seeds were collected from the Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Joydebpur,Gazipur. The experiment consisted of three factors as follows:-Factor A: IBA (Indol Butyric Acid), Doses of IBA 5 ppm, Factor B: GA3 (Gibberellic Acid) Doses of GA3 5 ppm, Factor C: Zinc level (1kg/ha). Total 8 treatments were as follow with symbolically: T0= control, T1= IBA 5ppm, T2= GA3 5ppm,T3= Zn,T4= IBA 5ppm+ GA3 5ppm,T5= IBA 5ppm+ Zn,T6= GA3 5ppm+ Zn,T7= IBA 5ppm+ GA3 5ppm+ Zn. The experiment was laid out in a Randomized Complete Block Design (RCBD) having three factors with three replications. The treatment combinations were accommodated randomly in the unit plots. An area of 19.5 m × 8 m was divided into three equal blocks. Each block consisted of 8 plots where 8 treatments were allotted randomly. There were 24 unit plots altogether in the experiment. The size of each plot was 2 m × 1.8 m. The distance between two blocks and two plots were 0.5m and 0.5 m respectively. Tomato seedlings were raised in the seedbed situated on a relatively high land at Farm of Sher-e-Bangla Agricultural University, Dhaka. The size of the seedbed was 3 m × l m. The soil was well prepared with the help of spade and made into loose friable and dried mass to obtain fine tilth. All weeds and stubbles were removed and 5 kg well rotten cow dung was applied during seedbed preparation. The seeds were sown in the seedbed on 15 October, 2017 and after sowing, seeds were covered with light soil to a depth of about 0.6 cm. Heptachlor 40 WP was applied @ 4 kg/ha around each seedbed as precautionary measure against ants and worm. The emergence of the seedlings took place within 5 to 6 days after sowing. Necessary shading by banana leaves was provided over the seedbed so that the young seedlings were safe from scorching sun or heavy rain. Weeding, mulching and irrigation were done from time to time as and when required and no chemical fertilizer was used in the seedbed. Manure and fertilizers such as cow dung, urea, triple super phosphate (TSP) and murate of potash (MOP) were applied in the experimental field as per recommendation of BARI (2005). The sources of N, P2O5, K2O as urea, TSP and MP were applied, respectively. The entire amounts of TSP and MP were applied during the final land preparation. Urea was applied in three equal installments at 20, 30 and 40 days after seedling transplanting. Well-rotten cow dung 20 t/ha also applied during final land. Application of IBA, GA3 and Zn was done at 15, 30, 45 days after transplanting as per treatment. Randomly five plants were selected and uprooted carefully at the time of collecting data and mean data on the following parameters were recorded : Plant height, Number of leaves per plant, Number of branches per plant, Leaf Area index Chlorophyll content, Number of cluster per plant, Number of fruit per plant, Fruit weight per plant, Fruit yield (t/ha). Data were statistically analyzed by a computer program MSTAT-C software and Duncan’s multiple range tests was used to analyze the growth, yield and quality contributing characters of tomato to find out the statistical significance. The significance of the difference was evaluated by Duncan’s Multiple Range Test (DMRT) according to Gomez and Gomez, (1984) for interpretation of the results at 5% level of probability.
International Journal of Biosciences, Vol. 16, No. 2, p. 19-30, 2020
Journal