Abstract:
An experiment was conducted at the Agronomy field, Sher-e-Bangla Agricultural
University, Dhaka, during March to June, 2014 to study the effect of IAA and row
spacing on growth, nodulation, soil nitrogen and yield of mungbean. The experiment
was consisted of four levels of IAA applications viz. i) control (No IAA spray) ii)
Foliar spray of Indole-3-acetic acid (IAA) @ 50 ppm at 25 DAS iii) Foliar spray of
Indole-3-acetic acid (IAA) @ 100 ppm at 25 DAS and iv) Foliar spray of Indole-3acetic
acid
(IAA)
@
150
ppm
at
25
DAS
and
three
spacings
viz.
i) 20cm x 10 cm, ii)
30cm x 10 cm and iii) 40cm x10cm. The experiment was laid out in randomized
complete block design (RCBD) (factorial) with three replications.The results showed
that nodulation, soil N, yield and yield attributes of mungbean were significantly
influenced by the different levels of IAA application, spacing and their interactions.
The highest nodules dry weight, SPAD value (52.47 %), soil N change and seed yield
ha
-1
(2.15 ton) was observed in 100 ppm of IAA application. Spacing also had
significant effect on different growth and yield parameters. The plant with 30cm x 10
cm spacing gave the highest SPAD value (49.99 %) and seed yield ha
(2.17 ton).
The interaction of 100 ppm IAA application and 30 cm row to row distance showed
maximum SPAD value (55.00 %), soil N change and grain yield ha
-1
(2.21 ton) as well
as other yield contributing characters.
-1
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
AGRONOMY
SEMESTER: JANUARY–JUNE, 2015
