Document Type : Research Paper
Authors
1 Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran. Iran.
2 Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran. Iran
Abstract
Water deficit stress, permanent or temporary, limits the growth and the distribution of natural vegetation and the performance of cultivated plants more than any other environmental factors. In order to investigate effect of super adsorbent, drought stress and chemical fertilizers on Pippermint traits, this experiment was conducted in 2017 in Research Institute of Forests and Rangelands. The experiment was conducted in split factor in the form of a randomized complete block design with three replications. The main factor was water adsoroption in two levels (use and no use) and the sub factors were drought stress in three levels (including 90%FC, 60%FC and 30%FC) and chemical fertilizers (nitrogen and phosphour) in four levels (N0P0, N0P150, N300P0 and N300P150 kg/ha). Mean comparison of intraction water adsoroption, drought stress and chemical fertilizers indicated that the highest leaf yield was achieved in the use of water adsorption*90%FC*N300P0. (2598kg/ha) Use of water adsorption*90%FC*N0P150 had the highest inflorcence yield (500kg/ha). Mean comparison of intraction water adsoroption, drought stress and chemical fertilizers indicated that the highest leaf essential oil percentage (2.9 %) was achieved in the not use of water adsorption*30%FC*N300P150. Use of water adsorption*90%FC*N0P150 had the highest leaf essential oil yield. Mean comparison of intraction water adsoroption, drought stress and chemical fertilizers indicated that the highest inflorcence essential oil percentage and yield with 10.2 % and 30.3 kg/ha, respectively, were achieved in the not use of water adsorption*90%FC*N300P0. Results indicated that mint is sencitive to water deficiet stress and sufficient humidity is necessary for its production.
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