INFLUENCE OF VERMICOMPOST AND INORGANIC FERTILIZERS ON MITIGATION OF ARSENIC STRESS IN BRRI dhan47
Date
2017
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
DEPT. OF AGRICULTURAL CHEMISTRY
Abstract
An experiment was conducted in the net house and the agro-environmental chemistry
laboratory of the Department of Agricultural Chemistry, Sher-e-Bangla Agricultural
University, Dhaka-1207 during the Boro season of the year 2016-17 to evaluate the
influence of vermicompost and inorganic fertilizers on the mitigation of arsenic stress
in BRRI dhan47. The two factorial experiment was laid out in a Completely
Randomized Design (CRD) with three replications. Factor A: different doses of
arsenic on soil weight basis [As
0
=No arsenic applied, As
1
= 10 ppm arsenic, As
= 20
ppm arsenic, As
= 30 ppm arsenic] and Factor B: different doses of vermicompost
and inorganic fertilizers [T
3
= Recommended doses of vermicompost + inorganic
fertilizers, T
1
o
= Recommended doses of inorganic fertilizers without vermicompost,
T
2
= Recommended doses of vermicompost without inorganic fertilizers, T
=
Reduction of 40% of recommended doses of inorganic fertilizers + Addition of
vermicompost to supplement the reduction of inorganic fertilizers, T
= Reduction of
60% of recommended doses of inorganic fertilizers + Addition of vermicompost to
supplement the reduction of inorganic fertilizers]. Arsenic was added from Sodium
Arsenate (Na
2
HAsO
4
.7H
2
O). In case of fertilizers, T
gave higher results in most
growth, yield and yield contributing parameters (height, tiller number, effective tiller,
filled grain, 1000 grain weight, grain and straw yield) and T
2
gave lower results;
whereas for arsenic, maximum results were recorded from As
1
and minimum from
As
3
. In interaction, As
0
T
2
produced higher results and As
3
T
1
0
produced lower results in
most cases. The treatment T
gave higher N, P and K content in grain, straw and root
whereas, T
1
2
gave lower content; highest As content by T
1
4
and lowest by T
. In case of
arsenic content in grain, shoot and root, maximum results were recorded from As
and
minimum from As
. In interaction, the maximum N, P and K content in grain, straw
and root were found in As
0
0
T
2
and the minimum were observed from As
treatment;
whereas, highest As by As
3
T
1
and lowest by As
0
T
0
3
T
2
1
. Therefore, the treatment T
showed lower arsenic in grain, shoot and root and T
1
showed the highest content.
Description
DEPARTMENT OF AGRICULTURAL CHEMISTRY
SHER-E-BANGLA AGRICULTURAL UNIVERSITY
DHAKA -1207
Keywords
VERMICOMPOST AND INORGANIC FERTILIZERS,BRRI dhan47