Effect of soil type and fertilization treatments on growth and chemical composition of some ornamental shrubs 1- Cestrum aurantiacum (Lindley) [electronic resource].

Includes reference.

This work was carried out at Antoniadis Garden, Horticultural Research Institute, Alexandria, Ministry of Agriculture, Alexandria, Egypt. during the two successive seasons of2005/2006 and 2006/2007 to study the effect of some fertilization treatments on Cestrum aurantiacum transplants grown in pots contain sandy, clay and sandy clay (1: 1 v/v) soils.The usedfertilization treatments were control (without fertilization), afull dose ofNPK, 1/2 dose ofNPK + active dry yeast, 1/2 dose NPK + compost and compost + active dry yeast. The best results for all the studied parameters as plant height, stem diameter, leaf area, number of branches per plant. fresh and dry weight ofleaves and shoots and N, P and K% were obtainedfrom the treatment of1/2 NPK + compost grown in clay or sandy clay soil. On the other hand, the significant highest chlorophyll a was obtainedfrom plants grown in clay or sand+clay (1:1) soils and fertilized by 1/2 NPK+ active dry yeast in the first season and in the second one from plants grown in clay soil and receivedjUl/ dose ofNPJ<, while the highest Significant value ofchlorophyll (b) was obtained from plants grown in clay soil and fertilized by 1/2 NPK+ compost in both seasons, but the highest significant total carbohydrates content was resultedfrom plants grown in sand+ clay (1: 1) soil and received 1/2 NPK + compost in the first season and those grown in clay soil and received NPKjUll dose in the second one. However, the best results for root fresh and dry weights were obtainedfrom the treatment ofNPKjUll dose grown in clay or sandy clay soil.

Summary in Arabic.

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