University of Khartoum

Can the Arbuscular Mycorrhizae and Phosphate Rock Enhance Maize (Zea mays L.) Growth Performance under Alkaline Conditions?

Can the Arbuscular Mycorrhizae and Phosphate Rock Enhance Maize (Zea mays L.) Growth Performance under Alkaline Conditions?

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Title: Can the Arbuscular Mycorrhizae and Phosphate Rock Enhance Maize (Zea mays L.) Growth Performance under Alkaline Conditions?
Author: Ahmed, Wahiba Ahmed Mohamed
Abstract: A pot experiment was conducted in the Experimental Farm of the Faculty of Agriculture, University of Khartoum at Shambat during the winter season of 2014/2015, to study the impacts of locally isolated arbuscular mycorrhizal fungi (AMF) and phosphate rock (PR) and their combination on the growth performance of maize (Zea mays) “line KHM405” under clay (Shambat) and sand clay loam (El-Rawakeeb) soil conditions. The experiment was arranged in a completely randomized design (CRD) with five replications. The treatments consisted two levels of AMF (0 and 50 mg kg−1 soil), two levels of PR (0 and 400 mg pot−1), as well as negative (no supply) and positive (50 kg P2O5 ha−1) controls. Triple superphosphate (48% P2O5) was the source of phosphorus in the experiment. The growth attributes investigated included plant height, number of leaves per plant, leaf area (LA), leaf area index (LAI), stem diameter, fresh and dry matter accumulations for the shoot and root fractions. Plant protein and mineral nutrients (N, P, K, Ca, Mg) and rhizospheric soil chemical analyses (pH, ECe, mineral nutrient contents) were performed at the end of the experiment (85 days after sowing). Results obtained showed that the application of AMF, PR, and their combinations to Shambat or El-Rawakeeb soil had no significant effect on all examined parameters (plant and soil). The results showed only a significant increment in the mycorrhizal colonization when AMF was added without PR. Because of the alkalinity of the soil, the present study indicated the importance of future studies to establish efficient methods of partial acidulation to improve the solubility of phosphate in the PR materials. Moreover, it is strongly recommended to study conditions that might help to optimize the effectiveness of AMF to maximize crop phosphate-use efficiency. The identification of indigenous promising AMF isolates remains of particular importance and also highly required.
Description: 145 Pages
URI: http://khartoumspace.uofk.edu/123456789/24706


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