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
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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)
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