Abdolhamid Mohebi
Abstract
Increasing the efficiency of water use is one of the main topics of sustainable agriculture in arid and semi-arid. The use of some materials such as superabsorbent polymers increase water storage in the soil and thus reduces the water use. Increase water storage in the soil to reduce the effects of drought ...
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Increasing the efficiency of water use is one of the main topics of sustainable agriculture in arid and semi-arid. The use of some materials such as superabsorbent polymers increase water storage in the soil and thus reduces the water use. Increase water storage in the soil to reduce the effects of drought and saline soil. In order to evaluate the effect of super absorbent polymer on survival and growth characteristics of palm, an experiment was carried out in split plot based on Randomized Completely Block Design (RCBD) with three replications at date palm and tropical fruit research center in Ahwaz, during 2011-2012. Experiment comprised a following treatment combination irrigation based on 60, 80 and 100 percent class A pan in main plots, superabsorbent in four rates (0, 40, 80 and 120 g for each offshoot) in subplot. The results showed that water stress and superabsorbent did not significant effect on the surviving. The water use 100 percent with 40 grams and 80 percent of water use with 120 grams of superabsorbent produced the highest and lowest number of leaves prospectively. The lowest number of leaves on the provision of treatment was. The most and lowest trunk perimeter produced in the treatment of water use 100 percent without superabsorbent and 80 percent of water use with 120 grams of superabsorbent, respectively. The water use 100 percent with 120 grams and 60 percent of water use without superabsorbent caused the maximum and minimum plant height, respectively.
Saber Sadeghpour; Lotfali Naseri; Morteza Nobahar; Reza Rezaee; Roghayeh Najafzadeh
Abstract
Walnut is one of the most important nut crops in Iran. In order to achieve an appropriate and economical production of old seedling orchards of this product, the only fastest and most cost-effective possible option for improving seedling trees is graft operation through top-working using the new improved ...
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Walnut is one of the most important nut crops in Iran. In order to achieve an appropriate and economical production of old seedling orchards of this product, the only fastest and most cost-effective possible option for improving seedling trees is graft operation through top-working using the new improved cultivars in the world. This study was conducted as a factorial experiment in a Randomized Complete Blocks Design under West Azerbaijan conditions, with the aims of determine the best time for grafting during April and May 2011-2012 season and doing a modified side grafting method and compare it with the bark grafting. For this purpose, two superior ‘Pedro’ and ‘Chandler’ walnut cultivars were used as scions to achieve a high percentage of graft take. The results showed that the highest percent of graft-take was related to the modified side grafting method with the highest rates of graft survival (97.32 percent) and final graft-take (83.93 percent), that was better than bark grafting in in top-working of walnut trees. Also, regarding the grafting time, the highest percent of graft-take was obtained from May with the highest rates of graft survival (98.95 percent) and final graft-take (89.49 percent), that was higher than April.