Studying the effects of deficit irrigation as an on-farm strategy on carrot yield in arid environment

Limited supply of good quality water is a major constraint to crop production in the Mediterranean region of Tunisia. Presently, there is an increasing pressure to use saline water to intensify agriculture in the arid part of Tunisia. Irrigation of a wide range of crops such as potatoes, lettuces, fava beans and carrots is increasing around shallow wells having a salinity more than 3 dS/m. Production systems based on crops that are not tolerant to salinity in arid regions would not be sustainable without proper management of both water and salt. Good management of irrigation water is required for farmers seeking a viable mean to maximize water use. Many studies have reported substantial increases in crop yields