Table 2 Impact of certain bio-agents singly and concomitantly on reproduction of Meloidogyne spp. infecting sugar beet var. Negma under field conditions
Treatments | *Population/250 g soil | Female/1 g root | Final population | Red. % | No. of galls/1 g root | Red. % | No. of egg masses/1 g root | Red. % | Root malformation % |
|---|---|---|---|---|---|---|---|---|---|
NS | 1150.0f | 35.0f | 1185.0 | 79.9 | 33.0f | 29.8 | 8.0i | 77.1 | 0.0 |
HS | 2150.0e | 40.0c | 2190.0 | 62.9 | 38.0e | 19.1 | 14.0f | 60.0 | 0.0 |
BA | 2585.0d | 42.0b | 2627.0 | 55.5 | 40.0d | 14.9 | 16.0de | 54.3 | 0.0 |
DSBC | 2700.0c | 43.0b | 2743.0 | 53.5 | 43.0c | 8.5 | 20.0c | 42.9 | 20.0 |
O | 1100.0g | 33.0g | 1133.0 | 80.8 | 19.0c | 59.5 | 10.0h | 71.4 | 6.7 |
NS + HS | 800.0j | 33.0g | 833.0 | 85.9 | 28.0b | 40.4 | 15.0ef | 57.1 | 0.0 |
NS + BA | 850.0i | 37.0e | 887.0 | 85.0 | 30.0h | 36.2 | 21.0c | 40.0 | 0.0 |
NS + DSBC | 950.0h | 39.0d | 989.0 | 83.2 | 33.0g | 29.8 | 17.0d | 51.4 | 0.0 |
NS + O | 700.0k | 32.0g | 732.0 | 87.6 | 27.0i | 42.6 | 12.0g | 65.7 | 0.0 |
NS + HS + BA | 630.0l | 27.0h | 657.0 | 88.9 | 25.0j | 46.8 | 5.0j | 85.7 | 0.0 |
NS + HS + BA + DSBC + O | 240.0m | 12.0i | 252.0 | 95.7 | 8.0k | 83.0 | 0.0k | 100.0 | 0.0 |
DSBL | 3010.0b | 47.0ab | 3057.0 | 48.2 | 45.0b | 4.3 | 25.0b | 28.6 | 20.0 |
Untreated plants | 5850.0a | 49.0a | 5899.0 | 0.0 | 47.0a | 0.0 | 35.0a | 0.0 | 26.7 |