NFLUENCE OF ORGANIC AND INORGANIC FERTILIZERS ON GROWTH AND YIELD OF SUNFLOWER (Helianthus annuus L.)
Date
2021
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
DEPARTMENT OF AGRONOMY
Abstract
A field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka
during the period from November 2020 to March 2021 in Rabi season, to study the
influence of organic and inorganic fertilizers on growth, yield attributes and yield of
sunflower. The experiment consisted of two factors, and followed split plot design
with three replications. Factor A: Organic manure (3) viz: OM
0
: Control (without
manure), OM
1
: Cowdung 10 t ha
ii
-1
, OM
2
: Vermicompost 5 t ha
-1
and Factor B:
Inorganic fertilizer (4) viz: F
0
= Control (without fertilizer), F
1
= 50% RDF, F
2
= 75%
RDF and F
3
= RDF. Experimental result revealed that different organic and inorganic
fertilizers significantly influenced the growth, yield and yield attributing parameters
of sunflower. In case of different organic fertilizers, cowdung 10 t ha
)
treatment gave the highest plant height, dry weight per plant, SPAD value at different
days after sowing, head diameter (12.35 cm), seeds head
-1
(401.67), 1000-seed weight
(63.87 g), seed yield (2.13 t ha
1
-1
), biological yield (7.15 t ha
-1
-1
(OM
1
), stover yield (5.02 t ha
) and harvest index (28.39 %). Whereas the lowest seed yield (1.56 t ha
) was
recorded from OM
0
as control. However, in case of different levels of inorganic
fertilizers, the highest seed yield (2.19 t ha
-1
) was recorded in RDF (F
3
) treatment
which was due to enhanced yield attributes like head diameter (12.63 cm), seeds head
1
(422.78) and 1000-seed weight (64.54 g) but F
2
(75% of RDF) treatment also
showed statistically similar result with F
3
treatment. In case of combination, cow dung
10 t ha
-1
along with RDF (OM
1
F
3
) performed best in respect of growth and yield
attributes and yield parameters, like head diameter (13.71 cm), seeds head
(453.33)
and 1000-seed weight (66.84 g), leading to the maximum seed yield (2.19 t ha
),
biological yield (8.18 t ha
-1
), stover yield (5.71 t ha
-1
) and harvest index (30.2 %) than
compared to other treatment combinations but OM
1
F
2
(cowdung 10 t ha
along with
75% of RDF) was statistically at par with OM
1
F
3
in respect of yield and yield
attributes parameter. Therefore, it may be suggested that application of cowdung 10 t
ha
-1
along with 75% RDF (OM
1
F
2
) would help to plant growth and increase its ability
to enhanced better yield of sunflower.
Description
A Thesis Submitted to
The Department of Agronomy, Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfilment of the requirements
for the degree of
MASTERS OF SCIENCE (MS)
IN
AGRONOMY
Keywords
ORGANIC AND INORGANIC FERTILIZERS, SUNFLOWER (Helianthus annuus L.)