EFFECT OF MAGNESIUM SOURCE AND COMPANION NUTRIENTS ANIONS ON THE QUALITY AND STORABILITY OF POTATO (Solanum tuberosum L.) CV. DESIREE

K. Al-Jebori, M.; M.G. Al-Barzinji, I.

	EFFECT OF MAGNESIUM SOURCE AND COMPANION NUTRIENTS ANIONS ON THE QUALITY AND STORABILITY OF POTATO (Solanum tuberosum L.) CV. DESIREE
IRAQ JOURNAL OF AGRICULTURE
Article 1, Volume 14, Issue 6, 2009, Pages 0-0
Authors
M. K. Al-Jebori; I. M.G. Al-Barzinji
Abstract
A split-plot experiment on potato cultivar Desiree was carried out at fall season 2004 and spring season 2005 in silty loam soil to test the influence of foliar spraying once at tuber initiation stage only or repeated two weeks later, with different magnesium salts solutions of (MgSO4.7H2O, Mg(NO3)2.6H2O, MgCl2.6H2O and MgO) in addition to untreated plants as control, on potato tuber quality and storability. The concentration of Mg of all used salts was constant (1.947 g Mg. L-1 which comes from 2% MgSO4.7H2O). Results showed that were no significant differences between Mg salt treatments on percent of total soluble sugars at fall season 2004. However, in spring season MgO salt increased TSS percent significantly by 8.82% compared to MgSO4 salt. MgSO4, MgO and Mg(NO3)2 treatments increased the specific gravity and percent of dry matter and starch at fall season 2004 compared to control treatment, while they decreased significantly by 8.98, 12.00 and 0.75% in MgCl2 treatment compared to MgSO4 treatment, in opposite of that in spring season the use of Mg(NO3) and MgCl2 salts decreased these parameters significantly compared to control treatment, while the MgO salt increased these parameters by 13.46, 18.11 and 1.03 for dry matter, starch and specific gravity respectively. Spraying magnesium salts in fall season increased the tuber firmness significantly compared to control where higher increase were 12.94% in MgSO4 treatment, while at spring season there were no significant differences between treatments on this character. All magnesium salts increased the sprouts length after reconditioning period which was not significantly for fall season and significantly for spring season, the length increase was 5.73% in Mg(NO3)2. Also the number of sprouts increased in fall season especially in MgCl2 treatment to 10.91% compared to control treatment, while at spring season all magnesium salts increased the number of these sprouts especially in MgO to 34.78%. MgO treatment decreased the weight loss during reconditioning period significantly to 30.92% compared to control treatment at fall season, while the differences between Mg salts were not significant at spring season.

Statistics Article View: 20 PDF Download: 6