Airborne concentrations of conidia of Erynia neoaphidis above cereal fields

F. Hemmati, J. K. Pell, H. A. McCartney, M. L. Deadman

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The temporal pattern of release and dispersal of inoculum of plant and insect pathogenic fungi play an important role in the spread of disease. Airborne concentrations of primary and secondary conidia of Erynia neoaphidis released from the rose-grain aphid Metopolophium dirhodum were monitored at the edge of two winter wheat crops on IACR-Rothamsted Experimental Farm between May and September in 1996 and 1997. Hourly average temperature and humidity were recorded at each spore trap site and daily totals of rain and sunshine hours and daily average wind speed recorded about 1.6 km from the monitoring sites. No airborne conidia were found in 1996, but large numbers were trapped at the two sites in 1997. They were present from mid-June until early August, reaching peak concentrations on 17-18 July. Concentrations were usually highest during the night and in the early morning (01:00-07:00 h GMT) and were generally low during the day. On the 3 days when significant numbers of conidia were caught in the afternoon, daytime relative humidity was high (about 89%) and day-time temperature low (about 16 °C). Night-time conditions nearly always favoured the production of conidia. This suggests day to day variation in airborne conidium concentrations may be affected more by underlying biological factors than environmental conditions.

Original languageEnglish
Pages (from-to)485-489
Number of pages5
JournalMycological Research
Volume105
Issue number4
DOIs
Publication statusPublished - 2001

Fingerprint

Erynia neoaphidis
Fungal Spores
cereal
conidia
aphid
spore
relative humidity
humidity
Humidity
wheat
wind velocity
environmental conditions
fungus
farm
insect
crop
Plant Dispersal
Metopolophium dirhodum
winter
monitoring

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Plant Science

Cite this

Airborne concentrations of conidia of Erynia neoaphidis above cereal fields. / Hemmati, F.; Pell, J. K.; McCartney, H. A.; Deadman, M. L.

In: Mycological Research, Vol. 105, No. 4, 2001, p. 485-489.

Research output: Contribution to journalArticle

Hemmati, F, Pell, JK, McCartney, HA & Deadman, ML 2001, 'Airborne concentrations of conidia of Erynia neoaphidis above cereal fields', Mycological Research, vol. 105, no. 4, pp. 485-489. https://doi.org/10.1017/S0953756201003537
Hemmati, F. ; Pell, J. K. ; McCartney, H. A. ; Deadman, M. L. / Airborne concentrations of conidia of Erynia neoaphidis above cereal fields. In: Mycological Research. 2001 ; Vol. 105, No. 4. pp. 485-489.
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