Abstract:
The field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka during
October 2019 to April 2020 to find out the response of humic acid on growth, yield and
nutritional quality of tomato fruit at different maturity stages. Four different doses of humic
acid viz., H
0
= 0 ppm (control), H
1
= 25 ppm, H
2
= 50 ppm, H
3
= 75 ppm and four maturity
stages viz, MS
1
=green mature, MS
2
=breakers stage, MS
3
= pink stage MS4= red stage were
used to conducting this experiment. The experiment was laid out in Randomized Complete
Block Design having two factors.The effect of humic acid on maturity stages showed
significant variations with most of the parameters studied. The maximum number of flowers
per plant (305.78), number of fruit per plant (194.94), yield of fruits per plant (1.6 kg) were
found at 75 ppm humic acid treatment while the lowest result found in control. The highest
total soluable solid (5.86 %), pH (4.01) and B-carotine content (27.58 mg/100g) in fruit were
found in 75 ppm humic acid with red stage. The highest yield of fruits per hectare (68.99
tones) was obtained from 75 ppm humic acid was sprayed. So, the application of 75 ppm
humic acid and red stage would be the best option to maintain better growth, yield and to
have better quality tomato.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
In Partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
HORTICULTURE
