The potential efficiency of leaf and stem extracts of Schinus molle and Schinus terebinthifolius against Fusarium solani in addition to the phytochemi-cal screening of both species was studied. Extracts were prepared using differ-ent solvents (water, ethanol, methanol and acetone). Fusarium solani was iso-lated and identified from naturally diseased sweet pea (Lathyrus odoratus) plants. According to the pathogenicity tests, the highest pathogenic isolate was used to test the antifungal activity of each extracts with different concentrations on mycelial growth of F. solani in vitro. The effect differed according to the ex-tract type and concentration. The potential antifungal activity of ethanol ex-tracts appeared highly significant when used with leaves, regardless of plant species, whereas acetone was effective when used with stems. The highest re-duction of F. solani growth was obtained by ethanol and aqueous extracts of S. terebinthifolius leaves, ethanol extract of S. molle leaves, acetone extract of both S. molle and S. terebinthifolius stems, respectively. Effect of extracts at 64 mg/ml on damping-off incidence of artificially infected L. odoratus under greenhouse conditions was studied as well. The highest reduction of the disease was achieved by leaf extracts of S. terebinthifolius followed by S. molle. These results were attributed to the presence of alkaloid, phenolics, flavonoids, and tannins in leaves and stems of both plant species as revealed by the phytochem-ical screening. Significant negative correlation was detected between in vitro inhibition percentage of F. solani and the field incidence of damping-off in L. odoratus plants. These results suggest that extracts from S. molle and S. tere-benthefolius, especially ethanol leaf extracts and acetone stem extracts, are promising naturally derived antifungal agents for F. solani and other plant path-ogenic fungi.

A field experiment was conducted to evaluate the performance of two parsley cultivars under the conditions of Assiut, Egypt. Response of both varie-ties to foliar application of iron and magnesium at four concentrations (0, 100, 200 and 400 ppm) was studied. Results showed considerable differences in the productivity of both cultivars where cv. Gewone Snij3-RIALTO (RIALTO) sur-passed cv. Moskrul 2-KARUSA (KARUSA) in terms of fresh and dry weight, essential oil and leaf pigment content in both seasons. Foliar application of Fe and Mg separately or combined together at different concentrations revealed significant effect on growth parameters of both cultivars. The effect became more pronounced during the second and the third cuts. Increasing the concen-tration of either Fe or Mg resulted in significantly better results. The best inter-action was found in cv. RIALTO plants sprayed with Fe at 400 ppm combined with Mg at 200 ppm, whereas cv. KARUSA plants produced the best results when the same concentration of Mg (200 ppm) was combined with Fe at 200 ppm. It could be concluded that productivity and quality of parsley depended significantly on cultivar, cut and foliar nutrition. Cv. RIALTO showed noticea-ble superiority over cv. KARUSA under Assiut field conditions.

A field experiment was conducted to evaluate the performance of two parsley cultivars under the conditions of Assiut, Egypt. Response of both varie-ties to foliar application of iron and magnesium at four concentrations (0, 100, 200 and 400 ppm) was studied. Results showed considerable differences in the productivity of both cultivars where cv. Gewone Snij3-RIALTO (RIALTO) sur-passed cv. Moskrul 2-KARUSA (KARUSA) in terms of fresh and dry weight, essential oil and leaf pigment content in both seasons. Foliar application of Fe and Mg separately or combined together at different concentrations revealed significant effect on growth parameters of both cultivars. The effect became more pronounced during the second and the third cuts. Increasing the concen-tration of either Fe or Mg resulted in significantly better results. The best inter-action was found in cv. RIALTO plants sprayed with Fe at 400 ppm combined with Mg at 200 ppm, whereas cv. KARUSA plants produced the best results when the same concentration of Mg (200 ppm) was combined with Fe at 200 ppm. It could be concluded that productivity and quality of parsley depended significantly on cultivar, cut and foliar nutrition. Cv. RIALTO showed noticea-ble superiority over cv. KARUSA under Assiut field conditions.

This investigation was conducted to determine the productivity and water use efficiency (WUE) for new sunflower genotypes obtained from selfing and induced mutation. Ten sunflower genotypes were evaluated under drip irrigation using two treatments of irrigation (100 and 75% from water requirement of sunflower). Statistical analysis showed that there were significant differences among genotypes, as well as between irrigation treatments and the interaction between them. Results indicate that decreasing the amount of irrigation water from 1500 to 1130 (mm/ha) significantly reduced all studied traits. Mutation (M2,1-63) surpassed all the other genotypes in seed yield and WUE. Lines which gave the highest yield of the seed have WUE under drought conditions higher than WUE under normal irrigation. The lowest depression in seed yield due to drought conditions compared to the seed yield under normal irrigation has been registered for Line 20, Line M2,1-63, and Sakha 53 genotypes (11, 18, and 16%, respectively), but the highest depression recorded for Line 48, Line M2,3-63, and Line M2,4-63 (49, 46, and 43%, respectively). The genotypes (Line 20, Line M2,1-63 and Sakha 53) are more tolerant to drought than others and we can used its in breeding program to develop sunflower hybrids suitable for cultivation under drought condition.

NULL

NULL

NULL

NULL

NULL

NULL