Abstract:
The pot experiment was conducted in the “Field Lab of Plant Stress
Management”,Horticultural Farm of Sher-e-Bangla Agricultural University, Dhaka
during the period from October, 2015 to March, 2016 to find out the effect of
potassium nitrate and different saline conditionson growth and yield of chilli. The
experiment consisted of two factors: Factor A: Three levels of potassium nitrate as K
:
0 mM KNO
3
/kg Soil, K
1
: 3.5 mM KNO
3
/kg Soil, K
ii
2
: 7.0 mM KNO
/kg Soil and
Factor B: Four levels of sodium chloride as S
0
: 0 ds/m NaCl, S
1
3
: 5.0 ds/m NaCl, S
:
10.0 ds/m NaCl, S
: 15.0 ds/m NaCl. The experiment was laid out in Complete
Randomized Design with three replications.The maximum number of fruits plant
1
3
(34.91) and fruit yield plant
-1
(167.70 g) were obtained from K
treatment while the
minimum was found from control. In case of salinity, the maximum number of fruits
plant
1
(35.33) and fruit yield plant
-1
2
(165.00 g) were obtained from S
while the
minimum results were found from S
treatment. Finally this experimental result
suggests that, exogenous application of KNO
3
can effectively mitigate the deleterious
effect of salinity in chilli production. The present study revealed that increasing level
of salinity decreases the crop yield and negatively affects on other reproductive
parameters of chilli.The treatment combination S
3
3
K
(15 ds/m NaCl and 3.5 mM
KNO
3
1
/kg soil) had the maximum sodium ion content in the soil (14.56 ds/m) and the
yield plant
-1
was 155.66 (g). The treatment combination S
3
K
(15 ds/m NaCl and 7mM
KNO
3
/kg soil) gave higher yield which was 157.66 (g).
