THE ROLE of MYCORRHIZAL INOCULUM AND POTASSIUM  FERTILIZER ON THE GROWTH OF Zea mays L. UNDER WATER STRESS

D. Salman, Nariman.; Sabih Hameed, Saja

	THE ROLE of MYCORRHIZAL INOCULUM AND POTASSIUM FERTILIZER ON THE GROWTH OF Zea mays L. UNDER WATER STRESS
Diyala Agricultural Sciences Journal
Article 1, Volume 9, Issue 2, 2017, Pages 237-251
Authors
Nariman. D. Salman; Saja Sabih Hameed
Abstract
A pot experiment was conducted at the lath–house of the Department of Soil Sciences and Water Resources, College of Agriculture, University of Baghdad during the fall season of 2013. Sandy loam texture soil was used to study the effect of mycorrhiza and potassium addition on the growth of corn plant under water stress. Three potassium levels were used control (K0), 100 (K1) and 200 (K2) Kg h-1. Mycorrhiza inoculation was used with three treatments of inoculation (without inoculation (M0), with mycorrhiza, Gloums spp. (M1) and inoculation with roots infected by mycorrhiza (M2). Three irrigation treatments were used, i. e. irrigation when 40% (W1), 60% (W2) and 80% (W3) of available water was depleted. Using a Complete Randomized Design (CRD) with three replicates per treatments, the experiment includes 81 experimental units. Compared with M0 and M2 treatments results showed that inoculation with mycorrhiza (M1) significantly increase the shoot and root dry weight which were 31.39 g pot-1 and 10.02 g pot-1 respectively, as well as leaf and root area which were 90.59 cm2 and 127.36 cm2 respectively. The addition of potassium with mycorrhiza inoculation led to mitigate the high water stress on plant growth of through their combined action. Best result was achieved due to the triple interaction among water stress, mycorrhiza and potassium, where W1M1K2 treatment showed significant increment in the dry weight of shoot system and surface leaves area reached 15.8 and 8.4% respectively, compared to W3M0K0 treatment.
Keywords
Mycorrhiza; potassium fertilizer; Zea Mays; Water stress

Statistics Article View: 203 PDF Download: 158