Abstract:
The production of tomato is expected to reduce due to climate change induced major
abiotic stresses like drought. So, the objectives of this study were to explore the
influences of drought on morphology and yield attributes of tomato applying different
potassium fertilizer doses. A pot experiment was laid out in a Randomized Complete
Block Design with three replications. The treatments were T
1
ii
(Control), T
2
(0.63g K/pot
+ 40ml water/kg soil), T
3
(0.5g K/pot + 40 ml water/kg soil), T
4
(1g K/pot + 40 ml
water/kg soil), T
5
(0.5g K/pot + 70 ml water/kg soil), T
6
(1g K/pot + 70 ml water/kg
soil), T
7
(0.5g K/pot + 100 ml water/kg soil) and T
8
(1g K/pot + 100 ml water/kg soil).
Drought levels directly reduced the plant growth attributes such as; plant height, leaf
area, fresh and dry matter yield, relative water contents, leaf water potential,
photosynthesis rate, fruit weight per plant and yield whereas; application of K+
fertilizer progressively alleviated deleterious effects of drought stress on plant growth.
T
8
revealed the highest plant height at maturity stage (69.67cm), fruit number (42), fruit
diameter (4.67cm), fruit weight (80.17gm) and fruit yield (3.3 Kg per pot). This study
informs that an incremental increase yield by increasing levels of K on drought in case
of tomato leading to improve the cultivated variety of tomato and fertilizer
management.
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
AGROFORESTRY AND ENVIRONMENTAL SCIENCE
