INFLUENCE OF POTASSIUM FERTILIZATION AND IRRIGATION NUMBER ON POTASSIUM UPTAKE AND YIELD OF TWO WHEAT CULTIVARS

Document Type : Research articles.

Authors

Soil, Water and Environment Res. Inst., A.R.C, Egypt.

Abstract

Two field experiments were conducted in the experimental
Farm of Sids Agricultural Research Station, Agricultural Research
Center during two successiv seasons 2004/2005 and 2005/2006.
Objective of this work was to investigate the response of two what
cultivars namely Sids 1 (bread wheat) and Beni Suef 1 (durm wheat)
to potassium fertilization at the rates zero, 24, 48 and 72 kg K2O/fed
and irrigation treatments includ six irrigations, five irrigations
(withholding one irrigation at heading stage) and four irrigations
(withholding two irrigations at boating and milking stages).
Data obtained showed that Beni Suef 1 surpassed Sids 1
varieties in grains and straw yields by about 5.3 and 6.2% in both
seasons, while both K concentration and uptake were not affected by
wheat varieties.
Increasing irrigation numbers and potassium fertilization levels
up to 72 kg K2O/fed significantly increased both grains and straw
yields as well as K total uptake by grains and straw, however Kconcentration was not affected by irrigation treatments
When one irrigation was omitted, wheat plants fertilized 72 kg
K2O/fed gave grains and straw yields very closed to those that
watered six irrigations and received 48 kg K2O/fed.

Keywords

Fayoum Journal of Agricultural Research and Development
Volume 21, Issue 1
January 2007
Pages 28-38

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