EFFECT OF PLANT DENSITY AND NITROGEN ON THE GROWTH AND YIELD OF POPCORN (Zea mays L. Variety everta).
EFFECT OF PLANT DENSITY AND NITROGEN ON THE GROWTH AND YIELD OF POPCORN (Zea mays L. Variety everta).
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Date
1994-03
Authors
RUFA ' I, SHAMSUDDEEN
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Abstract
The experiment was conducted during the 1991 rainy
season, at the Institute for Agricultural Research Farm
Samaru, to investigate the response of popcorn to
different plant densities and nitrogen levels.
Treatments consisted of all possible combinations of
three plant densities; 53, 333, 71 ,111, and 106, 666
plants /ha and four nitrogen levels; 0, 50, 100, and 150
kg/ha. These 12 treatments were laid out in a randomised
complete block design replicated four times. Increased
plant density significantly reduced stand count at 12 WAS,
plant height at 12 WAS and significantly increased cob
yield per hectare, and the total grain yield per hectare.
Increased nitrogen levels significantly increased most of
the growth and yield characters except the number of
grains per cob and 100 seed weight. A combination of 100
kg IM/ha and 71,111 plants per hectare gave significantly
higher crop yield than any other treatment combination.
Optimum N rate was calculated to be 137 kg N/ha using a
regression model
Description
A thesis submitted to the Postgraduate School Ahmadu
Bello University, in partial fulfilment of the
requirement for the Degree of Master of Science in
Agronomy.
Department of Agronomy
Faculty of Agriculture
Ahmadu Bello University
Zaria Nigeria.
MARCH, 1994
Keywords
PLANT DENSITY,, NITROGEN,, (Zea mays L. Variety everta)