The field experiment conducted at 2019 ingreenhouse of the college of agriculture, University of Anbar to study the effect of seaweed extracts and Evisect 50 WP pesticide on the population density of whitefly Bemisia tabaci and some characteristics of eggplant Solanum melongena L. growth. The population density nymphs and adults rate decreased at use the seaweed extracts after 60 days of transplanting compared with control treatments. This effect was reflected in increased of some vegetative characteristics as plant height, number of leaves per plant-1, dry shoot, and root weight. The same effect was recorded in chemical characters as chlorophyll (spad), Nitrogen (N%), Phosphorus (P%), and Potassium (K%) in the leaves. This experiment reached a reliable conclusion to the adoption of used natural materials as one of integrated pest management to reduce whitefly damage.
An experiment was conducted to study the effect of the phytohormone salicylic acid alone or in combination with Acetamiprid and Matrixine plus in reducing the effect of the white fly, Bemisia tabaci, which is one of the important insects that infects the eggplant crop Solaum melongena L. The study showed that all tested concentrations of salicylic acid mixed with pesticides gave effective results after periods of treatment, and an increase in the efficiency of pesticides against the numbers of nymphs and adults of the insect and some growth characteristics of the eggplant crop when compared with the treatment with pesticides alone. This can be a good economic orientation for pest control by reducing the recommended rate and its reflection on the effects of environmental pollution.
The aim of this study was to evaluate the effects of noise exposure in certain residential districts in Fallujah city. Twenty-nine stations were selected and divided into two groups; the first group was located 50 to 100 metres from the main streets (quiet areas), whilst the second was located directly on the main streets. Noise levels were measured at a rate of three readings per station for different time periods for approximately sixty days in the year 2020. Mean values were taken in both the morning and evening using a portable sound level meter (Auto range, RS-232). The highest noise level was measured at Alforkan station for the morning reading (83.8 dB) within the second group, while the lowest noise level was measured at Alshohada alawla district station for the morning reading (63.2 dB) within the first group. As for the results of the daily noise level in the evening, the highest daily average (79.4 dB) was measured at Jaish al Shabi street, while the lowest daily average (56.4 dB) was at Dor Alsekak district. The total average noise levels for the morning measurements for the first and second groups were 66.7 dB and 77.2 dB, respectively, whereas those for evening measurements were 65.3 dB and 71.7 dB, respectively. According to field measurements, the average values for the noise (traffic) for the first and second groups in the morning and afternoon exceeded 68 dB, which may cause people to feel very disturbed according to the WHO guidelines on exposure to external environmental noise. In general, all the results measured in this study are above the limits allowed both locally and internationally. This is due to certain erroneous practices in daily activities in addition to the irregular spread of electric generators and commercial activities as well as heavy traffic in the city.
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