EFFECT OF NITROGEN AND PHOSPHORUS ON YIELD AND YELLOW BERRY DEVELOPMENT IN BREAD AND DURUM WHEAT
EFFECT OF NITROGEN AND PHOSPHORUS ON YIELD AND YELLOW BERRY DEVELOPMENT IN BREAD AND DURUM WHEAT
No Thumbnail Available
Date
1976
Authors
Negedu, Samuel
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
This study was initiated to evaluate the effect of N and P
fertilization on yield and yellow berry development in bread and
durum wheat.
Two wheat varieties, Cocorit 71 (durum) and Cajeme 71 (bread
wheat), were grown under irrigation at The University of Arizona
Experimental Farm, Marana, on Pima clay loam soil during the 1976-77
growing season. Twelve treatments involving four levels of N and three
of P were arranged in a randomized block design with six replications.
These were 0, 168, 252 and 336 kg N/ha and 0, 44.8 and 89.6 kg P/ha.
Prior to harvest, samples were taken and analyzed for number of heads,
head weight, straw weight, and grain weight. Grain yield was determined
at harvest. Percent yellow berry content, number of grains per head and
number of grains per 25 g were determined later. Yellow berry and
vitreous grains were analyzed for N content.
Grain yield increased with increased N and P but N in excess of
252 kg/ha decreased yields of both varieties slightly. The maximum
grain yields of both varieties were associated with 89.6 kg P/ha. Yield
increases were primarily due to production of more heads and grains as
well as increase in grain weight per unit area. Percent yellow berry
decreased with increased N with no significant effect of P. Percent
N in yellow berry grains was generally lower than in vitreous grains
Description
A Thesis Submitted to the Faculty of the
DEPARTMENT OF SOILS, WATER AND ENGINEERING
In Partial Fulfillment of the Requirements
For the Degree of
MASTER OF SCIENCE
WITH A MAJOR IN SOIL AND WATER SCIENCE
In the Graduate College
THE UNIVERSITY OF ARIZONA
1978
Keywords
NITROGEN,, PHOSPHORUS,, YELLOW BERRY DEVELOPMENT,, BREAD,, DURUM WHEAT