Fertilized tomato plants with 1:2:1 NPK formula (300 ammonium sulphate 21% N: 600 superphosphate 15.5% P2O5:100 potassium sulphate 50% K,O kg/fed.) gave the maximum value of plant height and dry weight of stems. Fertilization of tomato plants with 1:2:1 NPK formula with foliar spraying of B + Zn produced the longest tomato plant height. Spraying tomato plant with B at 30 ppm increased dry weight of tomato plant doubling N or P in the fertilizer ratio increased tomato seed yield. Spraying tomato plants with B or B + Zn significantly reduced the germination percentage. Increasing P amount in NPK formula caused an increment in the weight of 1000 seeds.

Metalaxyl, the active substance of the pesticide Ridomil, is a systemic fungicide assigned to control plant diseases caused by fungi belonging to the order Peronosporales. Tomato plants were sprayed three times with Ridomil plus 45 WP at the concentration of 0.6%. It was found that metalaxyl degradation in tomato fruits is very rapid. Five days after the treatment no metalaxyl residues in tomato fruits were found

Early and total yields as well as chemical constituents of tomato as influenced by NPK ratio combined with Zn and B nutrients in two growing successive seasons (1982 and 1983). Doubling NPK formula, i.e., 2:2:2 (600 ammonium sulphate 21% N; 600 superphosphate 15.5% P205:200 Potassium sulphate 50% K2O kg/fed.) produced the maximum value of total yield and average fruit weight. Absence of each of the three macro-elements caused a reduction in the total yield while doubling N ratio caused a depression in early yield. Foliar application with combination of B(50 ppm)+Zn (100 ppm) gave the maximum weight of early and total yields. Absence of K from NPK formulae or doubling dose of N reduced fruit firmness. Fertilizing tomato plants with 2:1:1 or 2:2:2 NPK formulae caused increases of T.S.S. in fruits. whereas 1:1) NPK formula being superior in ascorbic acid content. The combination of B + Zn seemed to be effective on T.S.S. and Vitamin C content. Increasing K dose in NPK formula increased titratable acidity in fruits.

Strains of TYLCV and TMV infecting tomatoes in Cyprus were identified on the basis of symptom expression or using genotypes possessing specific resistance genes. Two TYLCV strains caused 50 to 82% yield loss. Fifty tomato cultivars were tested in the greenhouse for resistance to TYLCV and TMV

Extracts of four indigenous plants were evaluated for their fungicidal properties namely, hierba buena (Mentha cordifolia); sambong (Blunea balsamifera); lagundi (Vitex negundo); and neem tree (Azadirachta indica). Results revealed that among the extracts tested, only hierba buena showed the potential of having a fungicidal property. Other extracts exhibited a zero diameter of zone of inhibition of 1:1, 1:2 and 1:3 concentrations. Statistical analysis revealed that 1:1 and 1:2 concentrations of hierba buena were significantly better compared with 1:3 concentration in terms of diameter of zone of inhibition