نوع مقاله : مقاله پژوهشی
1 دانش آموخته آبیاری و زهکشی، گروه علوم و مهندسی آب، دانشکده کشاورزی، دانشگاه بیرجند
2 دانشیار، گروه علوم و مهندسی آب، دانشکده کشاورزی، دانشگاه بیرجند
3 استادیار، گروه علوم و مهندسی آب، دانشکده کشاورزی، دانشگاه بیرجند
عنوان مقاله [English]
One of the most important limitation factors the production of medicinal crops is water deficit and water stress in arid and semiarid regions of the world. Therefore, in this study, the medicinal crop Isabgol was selected as one of the valuable medicinal plants. The purpose of this study was to increase water use efficiency in Isabgol. Research carried out as a factorial experiment in a randomized complete block design with four replications. The treatments were A200 superabsorbent polymer at one level (125 kg ha-1) and zeolite at one level (2.08 gr/ kg soil) and control plot without adding soil amendments and 3 levels of water stress including 50, 75 and 100 The percentages water requirement. The measured factors included morphological traits (germination percentage, leaf area, dry matter weight, number of spikes per plant), biological traits (seed weight per plot, 1000 seed weight and mucilage) and water use efficiency. The results showed that treatments had significant effect on morphological and biological traits and grain water use efficiency. The best results were obtained for the morphological traits in the substrate containing superabsorbent polymer at 12.75 gr. The best results were observed for biological traits of 12.89 kernel weight and WUE 11.76 kg / m3 in zeolite bed.