Humic Substances Stimulate Plant Growth and Nutrient Accumulation in Grapevine Rootstocks

Zachariakis, M.; Tzorakakis, E.; Kritsotakis, I.; Siminis, C. I.; Manios, V.

doi:10.17660/actahortic.2001.549.14

Cited by 15 publications

(10 citation statements)

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“…Data concerning foliar treatments with HAs of table grape cultivars are very scarce in the literature. In this study we did not observe any significant increase in shoot length, although improved growth of grapevine rootstocks treated with solutions of HS extracted from olive leaves compost has been already reported (Zachariakis et al, 2001).…”

Section: Vegetative Growthcontrasting

confidence: 53%

“…Only a limited number of reports concern with foliar applications of HS or HAs in the field and are limited to few species, such as olive (Fernández-Escobar et al, 1996), strawberry (Neri et al, 2002, rice (Tejada and Gonzalez, 2004) and durum wheat (Delfine et al, 2005). In the case of the effects of HS or their fractions HAs in grape, the available literature is scarce and based on studies related to applications in wine grapes (Brownell et al, 1987;Vercesi, 2000), table grape (Colapietra, 2000;Sánchez-Sánchez et al, 2006) and grapevine rootstocks (Zachariakis et al, 2001). A variability of results has been observed in all these studies, which can be attributed to both the variable sources of HS or HAs used and the different concentrations tested.…”

Section: Introductionmentioning

confidence: 99%

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Influence of foliar applications of humic acids on yield and fruit quality of table grape cv. Italia

Ferrara

Brunetti

2008

OENO One

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Aims: The responses in growth, yield and quality components of a Vitis vinifera cultivar (Italia) to the foliar applications of two humic acids extracted from a soil and a compost have been studied.Methods and results: The foliar applications of the two humic acids were performed in two years and six different dates of the season. Both humic acids were tested at two different concentrations, 5 and 20 mg/L. Throughout the trial, different analyses were performed (SPAD, chlorophyll content, titrable acidity, soluble sugars, pH, yield). Grapevines treated with the two humic acids exhibited both significant increases in total chlorophyll content and reductions of the chlorophyll a/b ratio. Application of humic acids significantly decreased titrable acidity and increased °Brix/acidity ratio. Generally, the treatments with humic acids significantly increased berry size, and as a consequence the yield.Conclusions: Humic acids exerted some positive effects (chlorophyll content, acidity, berry size) in Italia table grape. Better results were obtained when the compost humic acid was sprayed.Significance and impact of study: This study gives new information about the positive effects of foliar application of humic acids, active components of soil and compost organic matter, on yield and fruit quality of table grape. In organic viticulture humic acids may find a valid and appropriate application for a technical and economical use.

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Section: Vegetative Growthcontrasting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Influence of foliar applications of humic acids on yield and fruit quality of table grape cv. Italia

Ferrara

Brunetti

2008

OENO One

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“…In the case of the effects of HAs in grape (Vitis vinifera L.), few studies have been performed in wine grapes (Brownell et al, 1987;Vercesi, 2000), table grape (Sánchez-Sánchez et al, 2006) and grapevine rootstocks (Zachariakis et al, 2001). A variability of results has been observed in all these studies, which can be attributed to the variable sources of HAs used, the various concentrations tested, the different times of application, etc.…”

Section: Introductionmentioning

confidence: 99%

Effects of the times of application of a soil humic acid on berry quality of table grape (Vitis vinifera L.) cv Italia

Ferrara

Brunetti

2010

Span. j. agric. res.

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Humic acids are the most active components of soil organic matter and have been shown to have an hormone-like activity thus stimulating plant growth. The objective of this work was to verify the quantitative and qualitative yield responses of the table grape cv. Italia after the application of a humic acid at various phenological stages. The humic acid used in this study has been extracted from a clay soil of the Apulia region and was applied at a concentration of 100 mg L -1 in four different times: pre-bloom (I), full-bloom (II), fruit set (III) and veraison (IV) and in two years, 2007 and 2008. The following parameters were measured at harvesting: berry size, °Brix, pH and titratable acidity. Finally, the °Brix/titratable acidity ratio has been calculated. Soil Plant Analysis Development (SPAD) readings were performed every 30 days up to harvesting time on the leaves of the middle shoots. No statistical differences were observed between the two years for all the parameters examined. The humic acid applied at full-bloom (II) induced a significant increase of berry size (width and weight) and a significant improvement of the other quality parameters (titratable acidity and °Brix/titratable acidity) with respect to the control. This study confirmed that humic acids, if applied at full-bloom, can induce significant increase of qualitative and quantitative parameters in table grape and can find a positive application in an organic and sustainable viticulture.Additional key words: foliar sprays, hormone-like activity, overhead system («tendone»), phenological stages, SPAD. ResumenEfectos de los tiempos de aplicación de un ácido húmico del suelo sobre la calidad de las bayas de uva de mesa (Vitis vinifera L.) cv Italia Los ácidos húmicos son los componentes más activos de la materia orgánica del suelo y se ha demostrado que tienen una actividad similar a las hormonas, estimulando así el crecimiento de las plantas. El objetivo de este trabajo fue verificar los incrementos en el rendimiento cuantitativo y cualitativo de la uva de mesa cv. Italia después de la aplicación de un ácido húmico en diferentes etapas fenológicas. El ácido húmico se extrajo de un suelo arcilloso de la región de Apulia y se aplicó a una concentración de 100 mg L -1 en cuatro momentos diferentes: pre-flor (I), plena floración (II), fruto (III) y envero (IV), y en dos años, 2007 y 2008. Se midieron los siguientes parámetros en la época de la cosecha: tamaño de la baya, °Brix, pH, acidez titulable y ratio °Brix/acidez titulable. Cada 30 días hasta la épo-ca de cosecha se realizaron lecturas SPAD sobre las hojas de los brotes medios. Para todos los parámetros examinados no se observaron diferencias estadísticas entre los dos años. El ácido húmico aplicado en plena floración (II) indujo un aumento significativo del tamaño de las bayas (anchura y peso) y una mejora significativa de los demás parámetros de calidad (acidez titulable y °Brix/acidez) con respecto al control. Este estudio confirmó que los ácidos húmicos, si se aplican en plena flo...

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“…The increase in sugars in response to humic acid might be due to formation of maximum amount of different forms of carbohydrates within the leaf and fruit tissues of grapevine, which are then converted to the specific sugars like glucose and sucrose (Zachariakis et al, 2001).…”

Section: Fruit Firmness and Total Sugarsmentioning

confidence: 99%

Effect of Humic and Fulvic Acids With Some Nutrients at Diffrenet Time of Application on Yield and Fruits Quality of Anna Apple Trees

El-Boray

Mostafa

El-Galel³

et al. 2015

Journal of Plant Production

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The present investigation was undertaken during the selected two successive seasons of 2012 and 2013 on 12 years old Anna apple trees (Malus domestica, Borkh) budded on Shobra khan apple rootstocks. The selected trees were planted in a private orchard in Tanta, Gharbia Governorate, in clay soil and spaced at 3 x 4 meters apart. The trees were trained as open-vase form, irrigated by Nile water using surface irrigation (basing irrigation) system. The selected trees received the same horticultural practices and fertilization regime. The experiment was conducted on 60 apple trees Anna cv. in both seasons, ten treatments were carried out, each treatment replicated three times considering each two trees as a replicate using a split plot design , Humic and fulvic acids were added at 4 liter/fed. and mix with calcium nitrate (0.4 %) , zinc sulphate (250 ppm) and borax (20 ppm) as foliar spray at five development stages (at bud burst , fruit set, at the beginning of false coloring , at the end of false coloring and at the beginning of true coloring. Sprayed trees with fulvic acid at 4 liter/fad. and mixture of calcium nitrate (0.4 %) , zinc sulphate (250 ppm) and borax (20 ppm) at bud burst (T6) significantly increased both leaf surface area and shoot length in both seasons. While T7 sprayed trees with fulvic acid at 4 liter/fed. and mix., calcium , zinc and boron after fruit set recorded the highest values of fruit number/tree, fruit weight and fruit volume, soluble solid content, soluble solid content /acid ratio and total sugars and decreased specific gravity in fruits in both seasons. fruit height and diameter were increased with sprayed trees with humic acid at 4 liter/fed and mixture of calcium nitrate (0.4 %) , zinc sulphate (250 ppm) and borax (20ppm) at the beginning of false coloring) during the two seasons of study. The trees sprayed with humic acid at 4 liter/fad. and mixture of calcium nitrate (0.4 %), zinc sulphate (250 ppm) and borax (20 ppm) at beginning of true coloring and the end of false coloring on Apple fruits (T4 and T5) gave significant increase of fruit firmness in both seasons as compared to other tested treatments

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Humic Substances Stimulate Plant Growth and Nutrient Accumulation in Grapevine Rootstocks

Cited by 15 publications

References 0 publications

Influence of foliar applications of humic acids on yield and fruit quality of table grape cv. Italia

Influence of foliar applications of humic acids on yield and fruit quality of table grape cv. Italia

Effects of the times of application of a soil humic acid on berry quality of table grape (Vitis vinifera L.) cv Italia

Effect of Humic and Fulvic Acids With Some Nutrients at Diffrenet Time of Application on Yield and Fruits Quality of Anna Apple Trees

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