Effect of Planting Density on The Landscaping Potentials of Pelargonium zonale L. and Santolina chamaecyparissus L. Plants

Document Type : Original Article

Authors

1 Floriculture, ornamental horticulture and landscape gardening dept. Fac. of Agric. – Elshatby – Alex. Univ. Egypt.

2 Soil and water sciences dept. Fac. of Agric. – Elshatby – Alex. Univ. Egypt.

Abstract

The present work was carried out in the Flower and Ornamental Plants Research Gardens, Faculty of
Agriculture Alexandria University, Egypt during the years of 2010 and 2011. Two local cultivars of of Perlgonium zonale L. and Santolina chamaecyparissus L. were used in this work to study the effect of planting density on the parameters that affected their potential landscape uses.
Different planting density were used i.e. 6, 9, 12 and 15 plants/m2 for Pelargonium and 9, 12, 15 and 18 plants/m2 for Santolina. Results indicated that increasing the planting density (plants/m2) significantly increased only plant height. However, it decreased the plant diameter, leaf area, number of main branches/plant and slightly decreased plant condition (appearance, health, beauty, ornamental value and function) for Pelarganium and Santolina plants as well. From the previous results it is recommended to use
Pelargonium plants with an average diameter of 28 cm and at a rate of 15 plants/m2, while for Santolina plant it is needed to start with a suitable plant (its diameter > 15 cm) at rate between 15– 18 plants/m2 to obtain good landscaping potential and ornamental value.

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