Prolonged activity effects of mineral fertilizers on white rice yield and rice protein content

Andreevska, Danica and Jekic, M. and Ilieva, Verica and Andov, Dobre (2004) Prolonged activity effects of mineral fertilizers on white rice yield and rice protein content. Годишен зборник на земјоделски институт - Скопје, 17-18. pp. 131-139. ISSN 1409-5297

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Abstract

The yield, total and protein nitrogen content as well as proteins in paddy and white rice grain have been observed under influence of direct and prolonged activity of mineral fertilizers. Namely, in a stationary field trial by the "Cade" method on an alluvial soil, precrop rice, direct and prolonged activity of four quantities nitrogen and two quantities phosphorus and potassium fertilizer were investigated in rice variety Monticelli (3 years of application and 1 year of application, 2 years prolonged activity). The variants in the trials were the following: Control - untreated; I-N45P45K45, II - N90P90K90, III - N120P90K90 and IV - N150P90K90. The fertilizers (NPK 15:15:15 and Uras 27%) were applied pre-plant. Results obtained from the investigations show that there were no significant differences in the content of fractions during the paddy whitening between the variants - direct activity and the variants - prolonged activity of the mineral fertilizers, as well as in the various years of investigation. The best average white rice yield (whole grains) is achieved in the variant I-N45P45K45 (both in direct fertilizer activity and prolonged activity). The total nitrogen, protein, and paddy and white rice protein content vary in various years of investigations as well as in the investigated variants themselves. The highest total nitrogen, protein nitrogen and protein content is obtained in the trial year.

Item Type: Article
Uncontrolled Keywords: rice, direct and prolonged fertilizer activity, white rice yield, total and protein nitrogen content, proteins
Subjects: Agricultural Sciences > Other agricultural sciences
Divisions: Faculty of Agriculture
Depositing User: Verica Ilieva
Date Deposited: 28 Dec 2012 09:03
Last Modified: 11 Jun 2013 11:13
URI: http://eprints.ugd.edu.mk/id/eprint/4681

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