Abstract. Metwally SA, Khalid KA, Abou-Leila BH. 2013. Effect of water regime on the growth, flower yield, essential oil and proline contents of Calendula officinalis. Nusantara Bioscience 5: 65-69. The effects of water regime on the growth, content of essential oil and proline of Calendula officinalis L. plants were investigated. Water regimes of 75% of field water capacity increased certain growth characters [i.e. plant height (cm), leaf area (cm2), flower diameter (cm) and spike stem diameter] and vase life (day). Water regime promoted the accumulation of essential oil content and its main components as well as proline contents.

This study was carried out at the laboratory of National Research Centre, Egypt during two successive seasons on 2012 and 2013 to study the response of potus plants ( Epipremnum Aureum) irrigated by drainage water of ornamental fish basins diluted with tap water (DWOFB) at the concentrations 100% DWOFB, 75% DWOFB + 25% Tap water and 50% DWOFB + 50% Tap water) and interacted with magnesium sulphate as foliar fertilizer rate (MFFR) at the concentrations MFFR1 (25 ppm) and MFFR2 (50 ppm). The results indicated that, the plants watered with absolute fish effluent (100% fish) single or interacted with Mg 50 ppm performed the highest growth parameters, the highest percentage of carbohydrate and significant increase in photosynthetic pigments. The foliar application of Mg 50 ppm had positive effect on growth parameters and significantly increases in photosynthetic pigments. The plants irrigated with fish water effluent 75% followed by 50% had the second and the third largest average growth parameters and chemical constituents respectively.

At greenhouse of National Research Centre, Dokki, Giza, Egypt. A pot experiment was carried out to evaluate the effect of Kinetin spraying on growth and chemical constituents of cordyline plants. The present study shows a considerable difference in the growth parameters when treated with kinetin concentrations of 0, 100, 150 and 200 ppm compared with the control plants. It was found that, increasing levels of kinetin from zero to 200 ppm increased plant height, root length, stem diameter as well as leaves number, anthocyanin pigments and K%. On the other hand, application 200 ppm recorded decreased in nitrogen and phosphor percentage compared with the control. While application of 100 ppm kinetin significantly increased chlorophyll and protein content compared with the control plants.

Background: Desertification exacerbated and raised by climate change and represents one of the greatest environmental challenges of our times. Also, Desertification and climate change are an old phenomenon has not been a threat to life people, in the past so as to provide the natural ecological balance back then, but because of the range of the factors, we will recall it. The desertification and climate changes has started to worsen and its negative effects have increased at all levels, Economic, social and development. Trees, woody shrubs and ornamental plants represent an ever-important group in that they are the raw source for many important industries such as the manufacture of wood, food and medicine, health care (alternative medicine) and as windbreaks, and they play an important role in improving the environment, especially in light of the current climate changes. Main body: During recent years, the interest in planting woody trees and ornamental plants has increased, and its role has remained confined to a narrow range. It's important and fundamental role as a primary locomotive in combating desertification, sand encroachment and sand dunes, resisting successive climate changes, improving the environment and protecting it from pollution, as well as its prominent role in addressing the big problems that result from The movement of sand dunes and their threat to industrial and residential facilities, roads, farms,.... etc. Conclusion: The role of plants, trees, green areas are combating desertification and climate change, these trees does not depend on protecting farms only, but extending them to protecting urban communities and new cities from sand, which may lead to completely covering homes and establishments, but also to destroy the entire infrastructure (roads, tunnels, electricity, irrigation lines, railways ... It also plays a role in protecting the beaches and coastal areas from the high waves.