INFLUENCE OF CERTAIN ENVIRONMENTAL FACTORS IN THE FIELD ON INFECTION OF RICE BY PIRICULARIA ORYZAE

Abstract

The amount of dew, the length of the dew period, and the leaf area at the time of inoculation were the only significant variables correlated with the average number of lesions per plant when rice (Oryza sativa) in the susceptible stage was inoculated daily during an 11-week period with conidia of Piricularia oryzae. Daily records were kept on dew, rain, temperature and relative humidity of the air, light, soil temperature, and leaf area of the rice plants. No apparent effect of air temperature in the range of 61-95 F on infection by the blast organism was found.

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Document Details

Document Type
Technical Report
Publication Date
Aug 05, 1966
Accession Number
AD0650186

Entities

People

  • F. G. Rorie
  • G. N. Asai
  • Marian W. Jones

Organizations

  • United States Army Biological Warfare Laboratories

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Temperature
  • Cloud Cover
  • Diseases And Disorders
  • Equations
  • Fungi
  • High Humidity
  • Humidity
  • Infection
  • Inoculation
  • Linear Regression Analysis
  • Low Temperature
  • Medical Personnel
  • Plants
  • Production
  • Rain
  • Regression Analysis
  • Wound Infections

Fields of Study

  • Agricultural and Food sciences

Readers

  • Aquatic Ecology
  • Atmospheric Remote Sensing.
  • Microbial Pathology