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Table 1 Population densities of Coccinella undecimpunctata adults in untreated and sulfur-treated marrow cultivations

From: Impact of sulfur dust application on the abundance of two important coccinellid predators in marrow fields

Inspection periods (hours) First area Second area F value (1)
Average number of adults/50 plants/plot ± SE
Treated plot Untreated plot Untreated area
(−) 0 16.20 ± 0.86 aAB 18.20 ± 0.86 aC 17.00 ± 0.71 aB 1.535 NS
(+) 2 6.80 ± 1.07 bD 29.60 ± 1.50 aAB 27.80 ± 1.85 aA 70.474**
(+) 12 8.40 ± 1.36 cD 32.80 ± 0.86 aA 29.20 ± 1.16 bA 132.102**
(+) 24 9.20 ± 1.16 bCD 31.00 ± 2.92 aA 30.80 ± 1.50 aA 38.983**
(+) 48 13.80 ± 2.69 bBC 25.20 ± 1.66 aB 18.60 ± 1.21 bB 8.591**
(+) 72 17.20 ± 1.56 aAB 18.40 ± 1.03 aC 15.80 ± 1.69 aB 0.801 NS
(+) 7 days 20.40 ± 1.72 aA 14.00 ± 2.35 aC 10.80 ± 1.50 bC 6.699*
F value (2) 10.348** 17.551** 29.961**  
  1. Before application (−), after application (+), df 1 = 2, 9, df 2 = 6, 21. Data in rows with the same small letters are not significantly different (P value at 5%). Data in columns with the same capital letters are not significantly different (P value at 5%). *Significant, **highly significant, and  NS insignificant