RESPONSE OF TWO VARIETIES OF OKRA (Abelmoschus esculentus L. Moench) TO NITROGEN AND PHOSPHORUS FERTILIZERS
RESPONSE OF TWO VARIETIES OF OKRA (Abelmoschus esculentus L. Moench) TO NITROGEN AND PHOSPHORUS FERTILIZERS
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Date
1983-12
Authors
MAJANBU, ISHAYA SAMAILA
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Abstract
The response of two okra (Abelmoschus esculentus L.
Moench) varieties, 'White velvet' and 'NHAE47-4', to four
nitrogen level 3 (0, 25, 50 and 100 kg N/ha) and three
phosphorus levels (0, 13 and 26 kq p/ha) was investigated
during the 1981 and 1982 wet seasons. The investigation
revealed that both nitrogen and phosphorus enhanced okra
fresh pod yield but the two nutrients differed significantly
in their effects between the two years. It was also shown
that the two varieties of okra differed markedly in thoir
growth and potential and yields. The 'White velvet'
variety, the lower yielder, produced mean fresh pod
yield of 4,1 and 4,7 t/ha in 1981 and 1982, respectively.
The 'NHAE47-4' variety, the higher yielder, gave mean
fresh pod yields of 5.3 and 7.6 t/ha in 1981 and 1982,
respective1y.
The macro-nutrient contents of leaves and fruits were
also analysed. Nitrogen content was higher in the leaves
than in the fruits but the reverse was true in the case of
phosphorus content. Both varieties did not differ
significantly in their leaf nitroqen contents but the less
fertilizer-responsive variety ('White velvet') accumulated
more Phospohorus than the more respensive variety (NHAE$)
For optimum fresh pod yield in 'NHAE47-4' variety,
nitroqen application can be increased to about 80 kg/ha
and for 'White velvet' about 65 kq N/ha level is suggested.
It is also suggested that under Samaru conditions where
the experiments were conducted, phosphorus fertilisation
of about 13 kg p/ha would be beneficial to both
varieties of okra.
Description
A thesis submitted to the Postgraduate School,
Ahmadu Bello University
in Partial fulfillment of the requirements
for the deqree of Master of Science in Agronomy
DEPARTMENT OF AGRONOMY
FACULTY OF AGRICULTURE
AHMADU BELLO UNIVERSITY
ZARIA, NIGERIA
Keywords
RESPONSE,, TWO,, VARIETIES,, OKRA,, ,Abelmoschus esculentus L. Moench, NITROGEN,, PHOSPHORUS,, FERTILIZERS