Spiders were collected by using two methods, pitfall traps for ground spiders and beating net for aerial spiders. Pitfall-trapped once every week in four plants (Roselle, Castor bean, Spearmint and Red Pepper) in Sennourus village, Fayoum Governorate. 15 families, 16 genera and 10 species were recorded from the study. Family Lycosidae, was found to be the dominant family in the four different vegetations plants under the study, recorded 50.79% for all the specimens; followed by family Philodromidae, represented by 8.8%, it was more abundant in red pepper vegetation; then family Gnaphosidae, Theridiidae, Linyphidae, Thomisidae and Dictynidae were high in spearmint vegetation.
The composition of ground spider assemblages was slightly different in the four vegetations. The density of spider communities in the Spearmint, Castor bean, Roselle and red pepper were nearly similar recorded 98, 71, 73 and 73 individuals, respectively. Community composition was determined throughout the period of study using the Shannon-Wiener and Simpson Indices of diversity. The obtained results revealed that species diversity was slightly different.

The field experiment was conducted during summer and winter seasons to
evaluate seven varieties of beans (Phaseolus vulgaris L.) for their relative
susceptibility against some sap sucking pests Tetranychus urticae Koch, Bemisia
tabaci (Gennadieu), Aphis craccivora Koch, Thrips tabaci Lindquist and leaf miner,
Liriomyza trifolii (Burgess). The tested bean varieties were: Medina (V1), R9251 (V2),
Teresa (V3), Luvalde (V4), Al-Hanna (V5), Alexandria (V6) and Excalibur (V7). None
of the varieties escaped the infestation of all these pests. Generally the population of
T. urticae and T. tabaci were higher in summer than in winter, while population of B.
tabaci and L. trifolii were higher in winter. Relative susceptibility of bean plants
changed according to plantation season as, V6, V6, V5, V6 and V3 hosted the less
number of T. urticae, B. tabaci, A. craccivora, T. tabaci and L. trifolii in winter
season, respectively. While in summer plantation, V5, V1, V4, V1 and V7 hosted the
less number of the same pests, respectively.

"The field experiment was conducted during summer and winter seasons to evaluate seven varieties of beans (Phaseolus vulgaris L.) for their relative susceptibility against some sap sucking pests Tetranychus urticae Koch, Bemisia tabaci (Gennadieu), Aphis craccivora Koch, Thrips tabaci Lindquist and leaf miner, Liriomyza trifolii (Burgess). The tested bean varieties were: Medina (V1), R9251 (V2), Teresa (V3), Luvalde (V4), Al-Hanna (V5), Alexandria (V6) and Excalibur (V7). None
of the varieties escaped the infestation of all these pests. Generally the population of T. urticae and T. tabaci were higher in summer than in winter, while population of B. tabaci and L. trifolii were higher in winter. Relative susceptibility of bean plants
changed according to plantation season as, V6, V6, V5, V6 and V3 hosted the less number of T. urticae, B. tabaci, A. craccivora, T. tabaci and L. trifolii in winter season, respectively. While in summer plantation, V5, V1, V4, V1 and V7 hosted the less number of the same pests, respectively."

Abundance and fluctuation of the three sucking pests, Tetranychus urticae Koch, Aphis gossypii Glover and Bemisia tabaci (Gann.) were studied on three eggplant cultivars (Baladi-white, Florida Market and Baladi-Black) during two successive seasons 2009 and 2010. T. urticae occurrence continued almost all the season and reached its maximum at the end of June or the beginning of July; A. gossypii reached the highest abundance in the middle of September while B. tabaci reached the maximum abundance at the end of July and first half of August. Variance in susceptibility among tested cultivars was recorded on bases of the abundance averages overall the two seasons. Florida Market, Baladi-White and Baladi-Black were the most resistant cultivars against T. urticae, A. gossypii and B. tabaci, respectively. On the other hand Baladi-White, Baladi-Black and Baladi-White were the most susceptible cultivars to the same pests, respectively. Phytoseiulus persimilis proved to be a good biocontrol agent against T. urticae at release ratios of 1:5 and 1:10 prey : predator. A reduction appeared one week after release, generally it revealed 68.60 and 88.20 % mean reduction ratio for both release ratios, respectively.

Ethyl acetate extract and the purified fraction extracted from ripe fruits of Melia azedarach were tested against the 2nd and 4th instar larvae of Spodoptera littoralis. The extract and the fraction showed highly significant toxic activities and reduction in larval weight at all concentrations used. The LC50 values of the extract were 4.10 and 16.04 for 2nd and 4th instars, respectively, while for the purified fraction were 1.188 and 2.01 against the same instars. The chemical constituents of the purified fraction were identified by LC-MS. Ten components were identified, four of these components were previously isolated and six compounds were identified for first time from fruits of Melia. azedarach.

The efficiency of the organic pesticide "Baicao No. 1" (active ingredient matrine) was studied against the different stages of the red spider mite Tetranychus urticae Koch. It showed high efficacy against mite adult female as its LC50 values were 1.14 and 0.08 ppm when mortality was observed after one and four days, respectively. Less efficacy was observed against protonymphs, as the LC50 value averaged 26.14 ppm. Slight ovicidal efficacy was recorded on egg hatchability, as LC50 value was 168.25 ppm; while further high mortality was observed in hatched larvae which is reflected in a reduction in LC50 value to 8.03 ppm. Applying LC50 concentration (21.07 ppm) on protonymphs resulted in some changes in biological aspects of the survived mites which reduced finite rate of increase from 1.33 to 1.20 female per female per day. Matrine also showed antifeedant effect; as shrinkage in feeding area was recorded when mites fed on treated leaves.

Insecticide and repellent activity of an acetone extract and oil from fresh leaves of Pelargonium x hortorum (cv. Orangesonne) were evaluated against the 2nd and 4th instar larvae of Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae). The oil showed medium toxicity against the 2nd instar and low toxicity against the 4th instar larvae, while the extract showed high signifi cant toxicity at all concentrations tested against the two instars. On the other hand, both oil and extract exhibited highly signifi cant repellency against the two tested instars. Volatile constituents of the oil were also identified by GC-MS analysis.

Obtained data shoed that the type of prey and temperature affected significantly on C. eruditus male and female biology. As it prolonged C. eruditus life stages when fed on eggs of Rhizoglyphus robini at 20 ºC, while it was significantly decreased when fed on eggs of Callosbrucus maculates at 30 ºC.there was a significant effect on the predator fecundity when fed on different prey and temperature, as C. eruditus female deposited 49.92 eggs at 30 ºC when fed on R. robini eggs.

The obtained data included that the different biological aspects of P. martini was significantly affected by different diets (free living nematodes, Rhabditella muscicola Chitwood and two different fungi Fusarium oxysporum and Pithium spinosum) and temperatures. The male lasted shorter time than females in different periods. Female longevity recorded the longest period when it fed on F. oxysporum at 20 ºC (37.21 days) while the shortest longevity period recorded at 35 ºC (12.16 days).The obtained results showed that the best diet for rearing the predatory mite P. martini was F. oxysporum at 25 ºC where it recorded the highest number of deposited eggs (73.79 eggs) but the least favorable one for feeding was the fungus P. spinosum at 35 ºC (48.71 eggs).

The obtained results indicated that all biological aspects of the predator affected significantly by the type of the prey and temperature. The acarid mite, Tyrophagus putrescentiae eggs showed a higher fecundity source than T. putrescentaie immature stages and the eggs of the insect Plodia interpunctella, but the eggs of C. maculates was the lowest favorable one. The predator female during the whole duration period preyed upon the eggs of T. putrescentiae with an average of 109.1 eggs, while the male attacked prey eggs with an average of 53.7 eggs.