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Table 2 Natural incidence of Metarhizium rileyi infection on maize fall armyworm in relation to weather variables during 2019–2020

From: Studies on mycosis of Metarhizium (Nomuraea) rileyi on Spodoptera frugiperda infesting maize in Andhra Pradesh, India

Observation period, week (fortnight) FAW infestation (%) Metarhizium rileyi infection (%) Rainfall (mm) Temp, °C, max Temp, °C, min RH%, FN RH%, AN
Sept. I fortnight, 33 and 34 stdw 12.51 0.0 136.4 31.44 24.97 86.6 75.13
Sept. II fortnight, 35 and 36 stdw 19.64 0.0 239.7 31.99 25.06 99.47 72.0
Oct. I fortnight, 37 and 38 stdw 32.01 5.61 75.9 32.98 24.11 94.87 65.63
Oct. II fortnight, 39 and 40 stdw 41.24 11.39 236.7 30.61 24.39 95.30 50.75
Nov. I fortnight, 41 and 42 stdw 46.88 38.02 3.3 30.29 23.63 82.6 62.6
Nov. II fortnight, 43 and44 stdw 46.44 22.93 0.0 31.18 20.63 90.6 48.6
Dec. I fortnight, 45 and 46 stdw 40.90 16.48 0.2 30.07 20.28 90.8 52.27
Dec. II fortnight, 47 and 48 stdw 27.11 14.12 0.0 27.23 19.63 98.0 54.87
Jan. I fortnight, 1 and 2 stdw 21.05 5.84 0.8 29.17 17.01 93.6 55.13
Jan. II fortnight 3, and 4 stdw 18.25 3.9 0.0 31.39 18.72 89.56 52.63
Feb. I fortnight, 5 and 6 stdw 14.7 3.1 1.11 30.49 19.88 91.73 58.46
Feb. II fortnight, 7 and 8 stdw 11.02 0.0 0.06 32.68 19.06 91.07 45.14
  1. Temp temperature, RH relative humidity, FN forenoon, AN afternoon, stdw standard week