EFFECT OF NITROGEN FERTILIZATION AND INTRA-ROW PLANT SPACING ON GROWTH AND YIELD OF GARLIC (Allium sativum L.)
EFFECT OF NITROGEN FERTILIZATION AND INTRA-ROW PLANT SPACING ON GROWTH AND YIELD OF GARLIC (Allium sativum L.)
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Date
1996-03
Authors
BABAJI, BASHIR AHMAD
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Abstract
A field experiment was conducted under irrigation at the Institute for
Agricultural Research (I.A.R), Ahmadu Hello University. Samaru, Zaria during
1993/94 (November-April) dry season to study the response of garlic {Allium
sativum I..) to different levels of nitrogen (0, 40, 80 and I20kg/ha) and intra-row
spacing (5x10, 10x10 and 15x10cm). Application of nitrogen significantly increased
plant height, number oi' leaves/plant, fresh and dry leaf weight, fresh and dry bulb
weight, % bolters, bulb diameter, number of cloves and total bulb yield/ha with
optimum values at 40kg/ha rates of N. The number of days to crop maturity, dry
matter contents of bulb and average weight per clove were, however, reduced by N
application.
Increasing intra-row plant spacing from 5x10cm to 15x10cm significantly
increased leaf fresh and dry weights between 6 to 15 weeks after planting (WAP),
the mean weight/bulb at 15WAP, % bolters, bulb diameter, mean fresh weight of
mature bulb, number of cloves/bulb and bulb yield/ha. However, spacing had no
significant effect on plant height, number of leaves per plant, dry bulb weight
between 6-15 WAP. days to crop maturity, bulb dry mallei- content and mean
weight/clove. The interaelion of nitrogen and spacing was significant on number of
leaves/plant, bulb diameter, mature bulb weight and number of cloves per bulb
which were maximized by the combination of 80kgN/ha with 15x10cm, while the
effect of these treatments on yield was optimum at N rate of 40kg/ha plus intra-row
spacing of 5x10cm or 10x10cm depending on the quality of the crop needed.
Description
A thesis submitted to the Postgraduate School,
Ahmadu Bello University,
in partial fulfillment of the requirements for
the Degree of Master of Science in Agronomy.
DEPARTMENT OF AGRONOMY,
FACULTY OF AGRICULTURE,
AHMADU BELLO UNIVERSITY.
ZARIA, NIGERIA
Keywords
EFFECT,, NITROGEN,, FERTILIZATION,, INTRA-ROW,, PLANT,, SPACING,, GROWTH,, YIELD,, GARLIC,, Allium sativum L.