Abstract:
A two factorial tray experiment was conducted in the net house of the
Department of Agricultural Chemistry, Sher-e-Bangla Agricultural
University, Sher-e-Bangla Nagar, Dhaka-1207, during November 2017 to
January 2018, to study the performance of rice cultivars to different
concentrations of arsenic at seedling stage. Factor A: different doses of
arsenic [As
0
= No arsenic added (control), As
iv
1
= 3 ppm arsenic, As
= 6
ppm arsenic, As
3
= 9 ppm arsenic and As
= 12 ppm arsenic (soil water
basis)] and Factor B: different rice cultivars [T
4
1
= BINA dhan-8, T
=
BINA dhan-10, T
3
= BINA dhan-14, T
4
= BINA dhan-18, T
= BR 14, T
7
= BR 16, T
8
= BRRI dhan28, T
9
5
2
2
= BR 3, T
= BRRI dhan29, T
=
BRRI dhan36, T
11
= BRRI dhan45, T
12
= BRRI dhan47, T
= BRRI
dhan50, T
14
= BRRI dhan55, T
15
= BRRI dhan58, T
= BRRI dhan59,
T
17
= BRRI dhan60 and T
18
16
= BRRI dhan61]. Different growth and yield
parameters varied significantly due to difference in the doses of arsenic.
Arsenic toxicity adversely affects all the growth and yield related
attributes of all rice cultivars. BINA dhan-18 produced highest seedling
height and BRRI dhan29 produced the lowest. BRRI dhan-61 produced
highest shoot weight and BR 3 produced the lowest. BINA dhan-18
produced maximum root length and BRRI dhan45 produced the lowest.
BRRI dhan29 produced maximum root weight and BR 3 produced the
minimum. BRRI dhan29 produced maximum total dry matter and BR 3
produced minimum. BRRI dhan29 contained maximum N in shoot and
BINA dhan-10 contained the minimum. BRRI dhan61 contained
maximum P in shoot and BR 3 contained the minimum. BRRI dhan61
contained maximum K in shoot and BR 3 contained the minimum. BRRI
dhan29 contained maximum N in root and BINA dhan-8 contained the
minimum. BRRI dhan61 contained maximum P in root and BR 3
contained the minimum. BRRI dhan61 contained maximum K in root and
BR 3contained the minimum.
