Author(s): Ibrahim B. Abou-Deya
Article publication date: 1995-12-01
Vol. 13 No. 3 (yearly), pp. 543-552.
149
Keywords
fertilizer, water stress, saline
Abstract
The effect of irrigation intervals; 10, 20, 30 days and N fertilizer levels; 70, 140 and 210 kg N/ha on vegetative growth of Acacia cyclops A. Cunn. during 1990-1993 were studied at South-Sinai, Egypt. Salinity concentration in irrigation well water and the experimental soil were 6.8 and 9.7 mmhos/cm, respectively. Results revealed that irrigating plants by saline water every 10 days, significantly increased plant weight before full establishment. However, older plants (over 2 years age) produced the highest dry weight by expanding irrigation interval to 20 days. Gradual increasing in salt accumulation hindered growth development. Adding 210 kg N/ha in the form of ammonium sulphate, significantly enhanced plant height, foliage diameter and both fresh and dry weight of individual shrub.