Reducing Adverse Effects of Salinity in Peach Trees Grown in Saline Clay Soil

Abstract

A field experiment was carried out during 2016 and 2017 seasons on heavy clay soil, somewhat affected by salinity located at Sidi Salem District , Kafr EL-Sheikh Governorate, Egypt, to study the effect of some treatments including; Uni-sal (U), Humic acid (H), Magnetic iron (Fe) and Mycorrhizae (M) on "Florda Prince " peach trees growth, productivity and fruit quality. The data indicated that the application of these treatments increased vegetative growth parameters, leaf chlorophyll content, leaf-macro and micronutrients content, fruit set percentage, yield/tree, total soluble solids (TSS), and fruit firmness, while decreased leaf-Na and proline content, pre-harvest fruit drop percentage and fruit acidity as compared to that of the control. Uni-sal treatment achieved the highest values of vegetative growth parameters, leaf-N, K, Ca, Mn and Zn contents, fruit set percentage, fruit weight, yield and fruit firmness and recorded the least pre-harvest fruit drop percentage and fruit acidity compared to that of the other treatments followed by humic treatment in this respect. Magnetic iron was most pronounced on rising leaf-chlorophyll content and reducing leaf-Na and proline more than H, U and M treatments. Micrrhyzae was superior to leaf-P and Mg contents.The combined application of treatments were more effective as compared to the individual applications. Unisal and micrrhyzae (U+M) treatments gave significant increase over all treatments in vegetative growth parameters, leaf-N, P, K, Mg and Ca contents, fruit set percentage, fruit weight and yield and least pre-harvest fruit drop percentage and fruit acidity as compared to those of the other treatments, followed by (H+U) treatment. Uni-sal and magnetic iron was superior to other treatments in increasing leaf-chlorophyll content and total soluble solids (TSS) and decreasing leaf-Na and proline content more the other treatments.

Magnetic Iron–Improved Growth, Leaf Chemical Content, Yield, and Fruit Quality of Chinese Mandarin Trees Grown under Soil Salinity Stress

“…The best results regarding magnetic iron application in mandarin trees were gained when magnetic iron was applied at 750 g.tree −1 , followed in descending order by 500 g.tree −1 . These results are in harmony with those obtained by Soliman et al [ 15 ], who reported that magnetic iron treatment increased fruit firmness of peach trees when compared with that of the control. Magnetic iron has been reported to have a positive effect on plant growth and development [ 44 , 45 ].…”

“…These findings matched those of Abobatta [ 24 ], who discovered that using magnetic iron at concentrations of 1000 g.tree −1 enhanced leaf mineral content in Valencia orange leaves compared to the control. In a similar line, Soliman et al [ 15 ] discovered that applying magnetite at a concentration of 1000 g.tree −1 once significantly enhanced leaf N, P, and K contents in Florida prince peach trees as compared to the control. Trees given magnetic iron at a concentration of 750 g.tree −1 yielded the highest significant values of nitrogen, phosphorus, potassium, and iron, while the control treatment yielded the lowest value in both seasons.…”

“…Such iron enhances soil energetic and vigorous properties (magneto biology) [ 12 ], which help in plant growth, moderation of soil temperature, water holding capacity, and crop nutrition [ 13 ]. In addition, the magnetic instrument isolates all chlorine and unsafe gases from the soil [ 14 ], which expands salt development and reduces nutrient ability [ 15 ]. The application of iron as a fertilizer improves plant growth and reduces the damaging effects of environmental stresses [ 16 ].…”

“…EL Ghayaty et al [ 19 ] reported that soil application with magnetic iron at concentrations rates (200 and 250 g/vine) increased the parameters of vegetative growth, vine yield, and fruit quality of superior grapevines. Similarly Soliman et al, [ 15 ] studied Florida prince peach trees treated with 1000 g of magnetic iron. They saw increased growth in tree −1 , photosynthetic pigments, nutrients in leaves, yield, and physical properties of fruits, whereas leaf proline contents and fruit total acidity were decreased.…”

Effect of Humic Acid Application, Chitosan and Armurox Antitranspirant Spray on Growth and Fruiting Characteristics of Pomegranate CV.SALIMI Trees

“…Humic acid is essential in soil organic matter which is crucial for maintaining soil fertility, which has positive impact on biological, chemical and physical properties of the soils. In addition, the nature stability of these substances affects carbon and nitrogen cycles and carbon sequestration (Soliman et al, 2017). It is produced by biodegradation of dead organic bodies.…”