Bohloul Abbaszadeh; Masoumeh Layeghhaghighi; Samaneh Asadi Sanam; Meysam Ansari
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, ...
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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.
Faezeh Zaefarian; Vahid Akbarpour; Maryam Habibi; Mohammad Kaveh
Abstract
In order to investigate the effect of biochar and biological fertilizer on photosynthetic pigments, yield and nutrient content of peppermint (Mentha piperita L.), an experiment was conducted as factorial based on a randomized complete block design in three replications at Sari Agricultural Sciences and ...
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In order to investigate the effect of biochar and biological fertilizer on photosynthetic pigments, yield and nutrient content of peppermint (Mentha piperita L.), an experiment was conducted as factorial based on a randomized complete block design in three replications at Sari Agricultural Sciences and Natural Resources University in 2017. Treatment consisted biochar on two level (0 and 10 ton ha-1) and organic and biological fertilizers on five level (no fertilizer (F0), vermicompost (10 ton ha-1) (F1), Pseudomonas fluorescens (F2), Azotobacter (F3) and Arbuscular mycorrhizal (Glomus mosseae, G. intradicces and G. etunicatum) (F4)). The results of this study showed that the main effect of biochar and bio-fertilizer had a significant effect on leaf, stem and total fresh weight of the plant. In addition, the use of biochar and also mycorrhiza treatment increased average of leaf fresh weight (294.73 and 306.8 g.m-2), stem fresh weight (366.73 and 361.15 g.m-2) and total fresh weight (661.46 and 667.95 g.m-2). The interaction effect of treatments had a significant effect on leaf, stem and total dry weight. The highest rate of these traits was observed in biochar treatment with mycorrhiza, which had no significant effect with by a combination of vermicompost + biochar. Therefore, with respect to the production of medicinal plants in the low-input cropping systems, environmental protection, and achievement of sustainable agricultural to improve plant growth and photosynthesis of peppermint application of biochar + mycorrhiz and biochar + vermicompost treatment is recommended.
Irandokht Mansoori
Abstract
In order to evaluate row spacing and microelements spraying on yield and some morphological traits ofpeppermint, a split plot experiment was conducted based on randomized complete block design with fourreplications in Sari Agricultural Sciences and Natural Resources University during 2010-2011. Threelevels ...
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In order to evaluate row spacing and microelements spraying on yield and some morphological traits ofpeppermint, a split plot experiment was conducted based on randomized complete block design with fourreplications in Sari Agricultural Sciences and Natural Resources University during 2010-2011. Threelevels of row spacing (50 × 10, 50 × 20 and 50 × 30 cm) and two levels of microelements (no sprayingand spraying) were evaluated on peppermint at two harvesting time. The results showed that the firstharvesting had significant effect on plant height, oil yield and dry matter. Maximum oil yield (19.1 lit.ha1)and dry matter (1121.3 kg.ha-1) was obtained in the first harvesting time. Microelements had significanteffect on wet matter (3321.3 kg.ha-1), dry matter (987.7 kg.ha-1) and oil yield (19.63 lit.ha-1). Maximumdry matter (1015.5 kg.ha-1) and oil yield (20.31 lit.ha-1) was obtained in (50 × 20 cm) row spacing withspraying. 50 × 20 cm row spacing with spraying recommended, because of maximum oil yield inpeppermint.