A probable physiological disease in rice

Date

3-1958

Degree

Bachelor of Science in Agriculture

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

J. R. Velasco

Co-adviser

R. K. dela Fuente

Abstract

Ferric iron, even in excess, did not produce distinct symptoms of toxicity in rice plants grown in culture solution to reproduce the diseased condition suspected to be caused by an excess of iron in the soil. The dark-green color of the plants may be regarded as a symptom of phosphorus deficiency. Chelated iron produced yellowish plants the dry weight of which was greater than that of the plants grown in the two inorganic forms. High concentrations of ferrous iron produced stunted yellowish seedlings; this yellowing appeared similar to that of plants in the field at mid- vegetative stage. Ratios of 10:1 to 30:1 between iron and mangonese tended to be optimum for rice.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Notes

Botany

Document Type

Thesis

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