INFLUENCE OF VARIETY AND FERTILIZER TREATMENT ON THE CHEMICAL COMPOSITION OF MAIZE (Zea mays Linn.)
INFLUENCE OF VARIETY AND FERTILIZER TREATMENT ON THE CHEMICAL COMPOSITION OF MAIZE (Zea mays Linn.)
No Thumbnail Available
Date
1992-08
Authors
DABOR, DORIS OMA
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Fourteen maize samples were analysed to investigate Lhe
influence of variety and fertilizer treatment on the moisture,
ash, lipid, mineral, carbohydrate and amino acid
contents., Five varieties, namely TZB, 096, S 123, Bomo
Local and western yellow were used for the influence of
v trietal differences study while 9 groups of trv- variety
used for the influence of fertilizer treatment study.
The fertilizers were applied singly and in combination in the
".lowing doses: S.- (no fertilizer), S2 (25kg N/ha) , So
(50kg N/ha), s4 (30kg P/ha), s5 (60kg P/ha), Sg 50kg K/ha),
S7 (100kg K/ha), S« (25, 30 and 50kg N, P and K/ha respectively)
and Sg (50, 60 and 100kg N, P and K/ha respectively).
The samples used for the influence of varietal differences
study, S1 Q (Bomo Local), sl a (S 123), S1 2 (096), S1 3 (TZB)
and S14 (Western Yellow) all received combinations
(120kg N/ha, 60kg P/ha, 60kg K/ha). Both fertilizer treatment
and varietal differences had significant effects on the
moisture and protein contents. Fertilizer treatment had
significant effect on the ash and lipid contents while
varietal differences had no significant effect on these.
Analyses were done on the maize samples for the
identification of 9 minerals namely, calcium, copper, iron,
manganese, zinc, sodium, phosphorus, magnesium, and potassium.
Fertilizer treatment and varietal differences had
significant effects on the calcium, iron, manganese, sodium
zinc and phosphorus contents. In addition, while fertilizer
treatment had significant effects on the copper and potassium
contents, varietal differences had none. Both factors had
no significant effects on the magnesium content.
The carbohydrates of the maize samples were characterised
into their different fractions namely soluble carbohydrates,
hemicelluloses, cellulose and lignin. Fertilzier treatment
and varietal differences had significant effects on the
soluble carbohydrate, hemicellulose and cellulose contents
while only fertilizer treatment had significant effect on
the lignin content. The soluble carbohydrates were further
fractionated into fructosan, fructose, pentoses and "other
sugars". Both fertilizer treatment and varietal differences
had significant effects on the four fractions.
All the maize samples had low lysine and high leucine
contents. These gave leucine/lysine ratios greater than
4.6. Maize protein is therefore not nutritionally safe as
a major source of protein. It is suggested that samp]
S13 (TZB , 120, 60 and 60kg N, P and K/ha respectively)
distributed to farmers for planting at the institute: for
Agricultural Research, Samaru, Zaria. This suggestion is
based on its leucine/lysine ratio.
Description
THESIS SUBMITTED IN PARTIAL FULFILMENT OF
THE REQUIREMENTS FOR THE DEGREE
OF
MASTER OF SCIENCE
Keywords
INFLUENCE, VARIETY, FERTILIZER, TREATMENT, CHEMICAL, COMPOSITION, MAIZE