DIFFERENTIAL SUSCEPTIBILITY OF THREE MAIZE (Zea mays L.) CULTIVARS TO ZINC DEFICIENCY IN THE NORTHERN GUINEA SAVANNA ZONE OF NIGERIA
DIFFERENTIAL SUSCEPTIBILITY OF THREE MAIZE (Zea mays L.) CULTIVARS TO ZINC DEFICIENCY IN THE NORTHERN GUINEA SAVANNA ZONE OF NIGERIA
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Date
1995-09
Authors
OLOWOOKERE, BOLANLE TITILAYO
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Abstract
Field trials were conducted at Samaru over a period
of two years 1991/93 to study the differential
susceptibility of three maize cultivars (Ag-Kaduna, mega
hybrid and T2BSR-Y) to zinc deficiency. The zinc
application rates were 0, 1.0, 2-5, 5-0 and 7-5kg Znha-1.
There were response in cob length diameter, 1,000 grain
weight and grain yield of maize with increase in zinc
rates- A zinc rate of l-0kg Znha-1 appeared to be good
for optimum yield of maize-
Ag-Kaduna appears to be less susceptible to zinc
deficiency than the other two varieties- When the
nutrient concentrations were compared with zinc rates
there appeared a markedly decrease in the concentration
of Iron (Fe) and Phosphorus (P) as zinc rate increased-
This shows that the absorption of Fe and P in the
varieties appear to be the cause of differential
susceptibility to zinc deficiency.
Description
A thesis Submitted to the Postgraduate
School in Partial fulfillment of the Requirements
for the degree of
Master of Science
in
Soil Science
Department of Soil Science
Faculty of Agriculture
Ahmadu Bello University
Zaria
September, 1995
Keywords
DIFFERENTIAL,, SUSCEPTIBILITY,, (Zea mays L.),, CULTIVARS,, ZINC DEFICIENCY, NORTHERN GUINEA,, SAVANNA ZONE