|
|
| |
| Studies on The Effects of Inter-Cropping Coriander, Caraway, and Aniseed on The Population of Bemisia Tabaci(Genn.). |
Wessal Y. H .A and Ammar M.S. Abdalla
|
Abstract:
Large-scale usage of pesticides has become a source of great concern due to their possible adverse effect on human health and non target components of the environment, there for in present study we used some medicinal plants i.e. coriander, caraway, and aniseed were inter - cropped with the tomato varieties (Omdurman and Peto86) to reduce the whitefly population. The experiments were carried out in the field of University of Gezira, during winter and summer of 2000.The results showed that during winter the two tomato varieties harbored almost the same number of whiteflies, but in summer an apparent build-up of the pest population was shown to peak in the middle and then declined progressively towards the end of the season. Significant variations in the numbers of whitefly encountered on tomato plants within all treatments were more apparent during the summer than the winter season. During winter season tomato plants in the coriander treatment harbored the least number of whiteflies (1.009) followed by caraway (1.029) and aniseed (1.032) compared to the control (1.044 adults / leaf). Similarly, in summer season the whitefly population within coriander treatment was the lowest (1.044) compared to both caraway and aniseed (1.068) and the control (1.097 adults / leaf).
|
|
|
| | |