Abdolhamid Mohebi
Abstract
Mycorrhizal symbiosis increase nutrient uptake and enhance plant growth by elaborating root system. The positive effects of mycorrhizal symbiosis on the growth, physiology and ecology of various plants have been recognized. The symbiotic relations between mycorrhizal fungi and date palm with regard to ...
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Mycorrhizal symbiosis increase nutrient uptake and enhance plant growth by elaborating root system. The positive effects of mycorrhizal symbiosis on the growth, physiology and ecology of various plants have been recognized. The symbiotic relations between mycorrhizal fungi and date palm with regard to nutrient uptake by this plant have not yet been explored and studied in Iran. This project was conducted as a randomized complete block design with four replications (blocks) in a greenhouse at Date Palm and Tropical Fruit Research institute during 2008 to 2009. Factor A such as; five rate of fertilizer superphosphate triple (0, 5, 10, 15, 20 mg/kg soil), factor B including; with or without mycorrhiza inoculation. Fresh and dry weight of shoots and roots, root length, mycorhizal root length and nutrient concentration in different treatments were measured. The results showed significantly differences between dry weight of roots and shoots, nitrogen, potassium and phosphorus in shoot and roots (P
Hojat Dialami; Abdol Hamid Mohebi
Abstract
Abstract
Date palm, Phoenix dactylifera, is one of the most important horticultural crops in Iran. The most soils in Iran, especially those cultivated with palm, are calcareous with high pH. The high pH of soil causes reduction of nutrient elements absorption. Findings of researches show that application ...
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Abstract
Date palm, Phoenix dactylifera, is one of the most important horticultural crops in Iran. The most soils in Iran, especially those cultivated with palm, are calcareous with high pH. The high pH of soil causes reduction of nutrient elements absorption. Findings of researches show that application of elemental sulfur along with Tiobacillus bacteria in soil, due to sulfur oxidation, reduce local pH in rizosphere area and consequently increase nutrient element availability for plant. In order to study the effect of application of sulfur along with Thiobacillus inoculants and manure on leaf nutrient contents of leaf and vegetative growth characteristics in Date Palm ‘Barhee’ an experiment was carried out using randomized completed block design with four treatments and four replications (each replication consisted of two date palm seedlings) during three years in Ahvaze (Khuzestan Province). The treatments were: T1= Control, which consisted of application of 40 kg manure based on general recommendation for each tree, T2 = T1 + application elemental sulfur as 10 % of manure + Thiobacillus inoculants, T3 = T1 + application elemental sulfur as 20 % of manure + Thiobacillus inoculants and T4 = T1 + application elemental sulfur as 30 % of manure + Thiobacillus inoculants. The results showed that application of elemental sulfur along with Thiobacillus inoculants and manure was improved plant ability to uptake mineral nutrients such as P, K, Zn and Mn as comparison with the control treatment of soil. Improving plant mineral nutrients caused increasing vegetative growth characteristics such as number and length of leaf, number and length of leaflet, height of Date palm seedlings. Treatment 2, including: application of 40 kg manure, 4 kg elemental sulfur and Thiobacillus inoculants in soil at planting time, due to least application of sulfur as comparison with the other treatments of sulfur application and the highest leaf nutrient contents and vegetative growth characteristics of Date palm seedlings was the best treatment and for application is recommended.
Keywords: Date palm, Elemental sulfur, Thiobacillus inoculant, Vegetative growth
