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Table 4 Percentage of increase or decrease in population densities of Stethorus punctellium 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
Treated plot Untreated plot Untreated area
% Increase/decrease
(−) 0
(+) 2 − 81.48 − 30.77 − 15.79
(+) 12 − 100.00 + 34.62 + 31.58
(+) 24 − 88.89 + 7.69 − 10.53
(+) 48 − 66.67 + 26.92 + 52.63
(+) 72 − 70.37 + 11.54 + 68.42
(+) 7 days − 62.96 + 7.69 + 42.11
  1. Before application (−), after application (+)