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This study was earned out on strawberry (Fragana × ananassa, Duch.) during the tow successive season of 1988/1989 and 1989/1990, at the strawberry Improvement Center Experimental Farm at Omm saber, south Tahreer, El Behira Governorate. The objective of this work was to study the effect of strawberry cultivar Douglas A split-plot design with four replicates was adopted. The results indicated a substantial increase in the content of the available macro and micro nutrients in the fumigated soils compared to the non fumigated ones. A significant increase in the number of leaves per plant, fresh and dry weight, early and total yield per plant was recorded. Fumigation accompanied by fertilization increased the available content (N,P and K and (Fe, Mn, Zn, and Cu) in the soil in the both growing seasons compared to fumigated only or the control. Plants grown in the fumigated fertilized plots contained the highest amount of macro and macro nutrients in both the growing seasons. Fumigated non fertilized plots had the highest amount of available P and K than all other treatment The maximum early and total yield per plant was obtained from the fumigated non fertilized plots.

The aim of this study was to establish an effective method of micropropagation of globe artichoke from shoot-hp. This study involved establishment of an aseptic culture. multiplication of proliferated shook, rooting of these shook in vitro and adaptation of plantlets for free living Highest survival percentage with no contamination was achieved after sterilizing the explants with 70% ethanol (5 Sec.) + 1.5 % sodium hypochlorite for 20 min. The bast results of preventing browning of explants were obtained with 100 mg/1 ascorbic acid. The highest proliferated shook were obtained when shoot tip with 4 mm length (taken in mid March) were cultured on MS medium with 10mg/1 Kin. + 0.5 mg/l IAA. The highest multiplication rate was obtained when recultured on MS medium supplemented with 5 mg/1 Kin. + 0.5 mg/1 IAA. Multiplication rate gradually increased with increasing number of subculturing till Me third subculture but subsequent subculture (4th subculture) had a low rate.

The objective of thus work was to study the effect of soil fumigation with methyl bromide and different mulching types on growth and productivity of the strawberry cultivar Chandler. The experiment Included 8 Treatments which were the combination of 2 soil fumigation treatments × 4 mulching polyethylene types A split plot design with four replicates was adopted Soil fumigation treatments (fumigated and non fumigated) were assigned as main plots, whereas the four mulching polyethylene treatment (control, black, white and transparent) were distributed as subplots. Results Indicated that in order to improve the vegetable growth and to increase the high yielding ability of strawberry cv. Chandler, it is recommended to fumigate soil with methyl bromide gas (50 gm/m2) and apply transparent polyethylene soil mulching Moreover, in strawberry fields where weeds show serious problem. it is better to use the black polyethylene in controlling weeds of both the fumigated and non fumigated soils.