A pot experiment was conducted at greenhouse in Ornamental Horticulture, Res, Inst, Agric. Res Center, Giza Egypt, during two successive seasons of 2014 and 2015. The aim of this investigation was to study the effect of amino acids (tryptophan, ascorbic acids and super max) at different rates 250, 500 and 750 ppm on Spathiphyllum productivity and quality. Seedlings cultivated in pot with 30 cm diameter filled with 10 (kg) mixture of compost: clay: sand, 1:1:1). The statically analysis of experiment were a complete randomized design with three replicates for each treatment and each replicate had six plants. The results indicated that the different foliar treatments increased growth measured parameters, i.e. plant height (cm 2), number of leaves/ plant, number of branches/plant, leaf area (cm), fresh and dry weight of leaves (g/plant), length of root (cm), number of root /plant, fresh and dry weight of root, Spathe length (cm) and fresh and dry weight of Spathe (g/plant), in Spathiphyllum plants with increasing super max , tryptophan and ascorbic acid foliar spray rates during two seasons. Flowering stalk (cm) and flowering date of Spathiphyllum significantly affect by super max, treptophan and ascorbic acids than control. On the other hand, the concentrations of N, P and K (%) and carbohydrates in Spathiphyllum plants increased with increasing different rates of super max than other amino acids and control. Finely, from these results could use super max with 750 ppm foliar spray gave best growth and flowering parameters and quality of Spathiphyllum plants.
A pot experiment was conducted in the Orman Botanical Garden, Giza, Egypt, during two successive seasons of 2014 and 2015 to study the effect of different saline water levels (970, 5000, 8000 and 12000 ppm) and organic manure (cattle manure and chicken manure) combined with bio-fertilizers on Conocarpus erectus L. transplants productivity. The results indicated that there were decreases due to the effect of irrigation water levels salinity and organic manures in plant height (cm), root length (cm), stem diameter (cm), No. of leaves, fresh and dry weight of roots (g)/plant, fresh and dry weights of vegetative parts of Conocarpus erectus transplants with increasing water salinity. On the other hand, chlorophyll a, b and carotenoids content in the leaves decreased with increasing irrigation water levels with or without organic manures. The N, P and K percentages in the leaves were increased with decreasing irrigation water salinity and organic manures, while the Na + , Cl -and proline concentration in the leaves increased with increasing irrigation water salinity and organic manures. It can be concluded that Conocarpus erectus L. transplant can tolerate salinity up to 8000 ppm in irrigation water and organic manures combined with bio-fertilizers.
A study was conducted at the experimental Orman farm Botanical Garden , Giza, Egypt ,during 2005/2006 and 2006/2007 seasons to study the effect of potassein N (K-N) and potassein P (K-P) as a foliar spray with a different rates on growth, flowering and chemical composition of Euphorbia splendes plants grown in pots. The obtained results indicated that plant height, number of branches and number of leaves/plant, root length, fresh and dry weights of leaves, stem and roots as well as flower date ,flower diameter , chlorophyll a and b, carotenoids contents and the percentages of N, P and K in the plants. All these characteristics were significantly increased in response to the various treatments used in the study when compared to the control. The opposite was the right concerning number of days from planting to opening first flower significantly produced early flowering plants. So it is recommended to spray the foliage of Euphorbia splendes transplants grown in 20-cm-diameter pots with a combination 6 ml/L, K-N plus 6 ml/L K-P which gave attractive specimens of such plant.
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