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N o v e m b e r 2 3 - 2 4 , 2 0 1 8 | B a n g k o k , T h a i l a n d
Plant Science Congress 2018
Journal of Agricultural Science and Botany
ISSN: 2591-7897 | Volume 2
OF EXCELLENCE
IN INTERNATIONAL
MEETINGS
alliedacademies.comYEARS
PLANT GENOMICS
AND PLANT SCIENCE
World Congress on
Maqsood Ahmed, J Agric Sci Bot 2018, Volume 2 | DOI: 10.4066/2591-7897-C2-005
GROWTH AND BIOCHEMICAL RESPONSES
OF OKRA (
ABELMOSCHUS ESCULENTUS
) TO
PHOSPHORUS SOURCES SUPPLEMENTED
WITH HUMIC ACID
Maqsood Ahmed
Mirpur University of Science and Technology, Pakistan
P
hosphorus (P) is an essential nutrient for plant growth and is often the
limiting nutrient in agricultural ecosystems owing to its low availability in
soils. The present work investigates the stimulating effect of organic P sourc-
es; compost and poultry manure (PM) and rock phosphate (RP) supplement-
ed with humic acid (HA) on the growth, yield, nutrient uptake and antioxidant
activity of okra (
Abelmoschus esculentus
) under greenhouse condition. The
experiment was laid out under Complete Randomized Design and replicated
thrice; the treatments include: T
1
= control; T
2
= RP equivalent to 90 kg P
2
O
5
ha
-
1
; T
3
= PM equivalent to 90 kg P
2
O
5
ha
-1
; T
4
= compost equivalent to 90 kg P
2
O
5
ha
-1
; T
5
= RP + PM equivalent to 90 kg P
2
O
5
ha
-1
(50:50 ratio); T
6
= RP + com-
post equivalent to 90 kg P
2
O
5
ha
-1
(50:50 ratio); T
7
= RP + PM + HA (RP + PM
in 50:50 ratio equivalent to 90 kg P
2
O
5
ha
-1
and HA @ 100 mg kg-1 soil) ; and
T
8
= RP + compost + HA (RP + compost in 50:50 ratio that is equivalent to 90
kg P
2
O
5
ha
-1
and HA @ 100 mg kg
-1
soil). The results indicated that the plant
height, shoot dry weight, leaf chlorophyll and pod yield were highest where RP
and PM were supplemented with HA. Plant P uptake was maximum in treat-
ments receiving compost either with or without HA application. Biochemi-
cal data regarding DPPH radical scavenging showed superiority of RP while
the phenolic content showed dominance of RP + compost with the highest
phenolic content (1.22 mg GAE/g). Maximum hemolysis was observed in PM
treatment followed by compost and the least was recorded in RP + PM. The
study reflects that the application of HA and integration of RP with organic P
sources increased the okra yield and improved biochemical quality of pods.
Maqsood Ahmed starts his job as University facul-
ty member in 1988 after his graduation. Later, he has
completed his PhD degree in 2009 and Post Doc from
Republic of China in 2013. He served as Director Ad-
vanced Studies and Research Board, Mirpur University
of Science and Technology for more than 1 year. He
also worked as Chairman Department of Biotechnology,
MUST and now he is working as Dean Faculty of Arts
since 3
rd
February 2017.
dr.maqsood@must.edu.pkBIOGRAPHY