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Abstract
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Aloe vera is one of the most economically important medicinal plants in many
countries which used in food, cosmetics and pharmaceutical industries. In order to study
the effects of different levels of water deficit stress (irrigation after depleting 20, 40, 60
and 80% of soil water content) and zeolite (0, 4 and 8 g kg-1 soil) were arranged in a splitplot
in time based on a randomized complete block design with four replications. The
plants were harvested 270 days after imposing the treatments. The results indicated that
the maximum root fresh (170.81 g per plant) and dry weight (37.95 g per plant) were
obtained when the plants were irrigated after depleting 20% of the FC where 8 g zeolite
was applied. Also, the highest plant weight (2027 g per plant)was observed 270 days after
imposing the treatments when plants were irrigated after depleting 40% of the FC and
treated with 8 gzeolite. Application of zeolite could improve Aloe veraroot growth and
yield even under drought stress conditions [1,2 ].
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