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

Objective: Water deficit stress, permanent or temporary, limits the growth and distribution of natural vegetation and the performance of cultivated plants more than any other environmental factors.
Methods: To investigate the effect of water absorption, drought stress and chemical fertilizers on Mint, this experiment was conducted in 2019 at the Research Institute of Forests and Rangelands, in Karaj, Iran. The experiment was conducted as a split factorial experiment in the form of a randomized complete block design with three replications. The main factor was water absorption in two levels (use and no use) and the sub-factors were drought stress in three levels (90%FC, 60%FC and 30%FC) and chemical fertilizers (nitrogen and phosphor) in four levels (N0P0, N0P150, N300P0  and N300P150 kg/ha).
Results: A mean comparison of the interactions of the super adsorbent treatments with stress and chemical fertilizers indicated that the highest leaf yield was achieved with the use of super adsorbent*90%FC*N300P0. Application of super adsorbent*90%FC*N0P150 had the highest inflorescence yield. A mean comparison of the interaction between super adsorbent, drought stress and chemical fertilizers indicated that the highest leaf essential oil percentage (2.9 %) was achieved in the treatment without super adsorbent*30%FC*N300P150. The use of super adsorbent*90%FC*N0P150 had the highest leaf essential oil yield. Mean comparison of the interaction between super adsorbent, drought stress and chemical fertilizers indicated that the highest inflorescence essential oil percentage and yield with the average of 10.2 % and 30.3 kg/ha, respectively, were achieved in the treatment without super adsorbent*90%FC*N300P0.
Conclusion: Results indicated that mint is sensitive to water deficiency and sufficient moisture is necessary for its production.

Keywords

منابع

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