Abstract
The present experiment was carried out at one field of the research station (B) belongs to Horticulture Department/College of Agriculture/ Baghdad University during the summer season of 2017 in order to study the effect of the inoculation with the mycorrhizae and spray with FeSO4 and Anti-Transpirant (Armurox) on some growth characters and yield of okra Abelmoschus esculentus L. Moench. The experiment was lay out as a factorial experiment (2x3x2) in randomized complete block design (RCBD) with three replications. The total number of treatments was twelve. The three factors of the experiment included; the inoculation with mycorrhizae (M) (0 and 10 g. plant-1), spray with FeSO4 (F) (0, 0.5, and 1g.L-1), and the Anti-Transpirant ‘Armurox’ (A) (0 and 5 ml.L-1). The results showed that the three factors and their interactions had significant effects on most of the growth characters measured. The inoculation with the mycorrhizae was superior in giving higher values of plant height, number of branches and total number of leaves per plant; 139.97 cm, 15.00 branch. plant-1 and 165.85 leaf. plant-1, respectively. The M1F0A0 combination treatment recorded the highest number of branches per plant (16.50) while the M1F2A1 treatment recorded the highest values of plant height (145.66 cm), total leaves number (170.33 leaf. plant-1), leaf area (731.36 dcm-2. plant-1), number of pods (19.20 pod. plant-1), and plant yield (809.40 g. plant-1). .
Highlights
It is known as a good source of some vitamins such as B1, B2, B3, C, E, and K in addition to some mineral nutrition and protein, carbohydrate and unsaturated fats
Mycorrhizae is a symbiosis fungus that affect plant growth and productivity due to its large ability to habituate the rhizosphere of the plants and hinder the pathogens activities there, secreting number of vital compounds that contribute to promote plant growth, in addition to lower the soil pH that facilitates the absorption of some important mineral nutrition such as iron and manganese
Due to the economic importance of okra, we use the inoculation with mycorrhizae and spray with FeSO4 and Anti-Transpirant (Armurox) in order to investigate their role in increasing plant growth and yield per unit area
Summary
Moench) which belongs to the Malvaceae family, is considered as an important summer vegetable crop cultivated in most of tropical and subtropical regions of the world [1],[2] , [3] It is known as a good source of some vitamins such as B1, B2, B3, C, E, and K in addition to some mineral nutrition and protein, carbohydrate and unsaturated fats. It is known that infected roots secret some amount of carbon dioxide, the diffusion pressure will increase in the region surrounding the roots which considered as a normal result due to increase respiration rate This increase leads to the formation of carboxylic acids H2CO3 and acidic radicals COOH on the surface of soil particles and to the release of ionic phosphorus, absorption of phosphorus via the roots of host plant[6].[7] have found that using the mycorrhizae to inoculate the potato tubers led to increase yield by 20% compare to non-inoculated tubers. Due to the economic importance of okra, we use the inoculation with mycorrhizae and spray with FeSO4 and Anti-Transpirant (Armurox) in order to investigate their role in increasing plant growth and yield per unit area
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