Abstract
Two field experiments were carried out at Kafr El-Garayda Village, Bialla Center, Kafr El-Sheikh Governorate, Egypt during 2010/2011 and 2011/2012 seasons to study the effect of methanol and boron foliar spraying on growth, yield and quality of sugar beet. This aimed to study four aqueous methanol solutions control without 0, 15, 30 and 45% (v/v) sprayed three times during growth stages which occupied the vertical plots and four boron concentrations control without 0, 40, 80 and 120 ppm as boric acid applied as foliar spray- ing at two times during growth season and assigned in the horizontal plots. Results indicated that foliar application of 30% methanol solution significantly increased all studied characters i.e. total chlorophyll, leaf area/plant, foliage and root fresh weight, foliage and root length and root diameter, total soluble solids, sucrose and apparent purity per- centages, root, top and sugar yields/ha, whereas harvest index was decreased. Moreover, increasing methanol concentration to 45% tend- ed to decrease all above mentioned characters. Application of 80 ppm boron significantly improved root yield and its attributes and root quality, on contrarily harvest index was decreased. Maximum top, root, sugar yields/ha and root quality produced by foliar spraying of 30% methanol and 80 ppm boron.
Highlights
In Egypt, there is a gap between sugar consumption and production due to steady increases in population and average consumption of sugar beside limited cultivated area of both sugar beet (Beta vulgaris, L) and sugar cane
The main objectives of this study were aimed to study the effect of foliar application with methanol and boron concentrations on sugar beet (Beta vulgaris L.) cv
The horizontal plots were assigned to four foliar application of boron in the form of boric acid i.e. control without 0, 40, 80 and 120 ppm these solutions were sprayed on foliage parts of sugar beet two times (50 and 70 days after planting)
Summary
In Egypt, there is a gap between sugar consumption and production due to steady increases in population and average consumption of sugar beside limited cultivated area of both sugar beet (Beta vulgaris, L) and sugar cane. To increase sugar beet productivity per unit area sugar beet plants subjected to i.e. methanol and boron foliar fertilization since production of biomass by plants depends to great extent on environmental factors i.e. water supply, air temperature and carbon dioxide concentration in the canopy [24]. Foliar spraying of boron increase root yield since roots absorbed boric acid and its uptake depends on soil pH and soil boron content [8] due to chloroplast formation and sink limitations [22] and changes in cell wall which effects of boron deficit and led to secondary effects in plant metabolism, development and growth [16]. [3] indicated that highest root yield and sucrose concentration were obtained by spraying with 12% boric acid. Gloria to foliar application with methanol and boron to achieve maximum root productivity and its quality
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