EFFECT OF HUMIC ACIDS ON GROWTH AND NITROGEN UPTAKE OF CONTAINER-GROWN OLIVE (OLEA EUROPAEA L. ÂMAURINOâ)

Tattini, Massimiliano; Chiarini, Alberto; Tafani, R.; Castagneto, M.

doi:10.17660/actahortic.1990.286.24

Cited by 20 publications

(18 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The statistical analysis indicated that significant differences existed with regard to fertilizer treatments. This increase in plant N in the plots fertilized with humic substances coincided with the results of [4,8,19,30,37] on green asparagus crop, [22] on oat plants, and [31] on pumpkin plants, where the humic substances resulted in increased plant N. Leaf N levels decreased gradually during the maize cycle, because of N transfers from leaves to spikes and grains for protein synthesis. Absolute values observed at the different stages suggest that crop N nutrition was adequate [32,39].…”

Section: Leaf Injury and Plant Maturitysupporting

confidence: 79%

“…For this reason, the use of foliar fertilizing in agriculture has been a popular practice with farmers for supplying the nutrients that the plant requires in the early stages of development. In this respect, recent studies have shown that a small amount of nutrient (nitrogen, potash or phosphate) applied by foliar spraying can increase the yield of crops significantly [1,2,4,8,11,19,30,37].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of foliar application of a byproduct of the two-step olive oil mill process on maize yield

Tejada

González

2003

Agronomie

View full text Add to dashboard Cite

. Effects of foliar application of a byproduct of the two-step olive oil mill process on maize yield. Agronomie, EDP Sciences, 2003, 23 (7) Abstract -The main objective of this work was to study the effect of foliar fertilization at different doses with a byproduct of the two-step olive oil mill process on the productivity and quality of maize crops (Zea mays, L. cv. Tundra) located in Lora del Río, near Sevilla (Andalusia, Spain). Foliar fertilizer was applied four times during the season and three different concentrations were tested. Foliar fertilization increased leaf soluble carbohydrate contents, chlorophyll A and B and carotenoids, and increased the leaf concentrations of N, K, Fe, Mn and Zn. Yield was significantly increased by 24% to 14.9 t·ha -1 by the highest dosage of the byproduct, which also caused a 22% increase in kernel number and a 19% increase in grain protein content.

show abstract

Section: Leaf Injury and Plant Maturitysupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Effects of foliar application of a byproduct of the two-step olive oil mill process on maize yield

Tejada

González

2003

Agronomie

View full text Add to dashboard Cite

show abstract

“…Similar results are often obtained when synthetic hormones (gibberellins) are applied in seedless table grape cultivars, and this action of the HA-S could show a possible application of this natural organic compound as an alternative to various chemical molecules. However, positive effects of HAs are generally higher on roots than on shoots and fruits of various species (Chen and Aviad, 1990;Tattini et al, 1990) and at concentrations in the range of 50-300 mg kg -1 (Chen et al, 2004) or even higher in the case of chicory plants (Valdrighi et al, 1996). However, the hormone-like activity of HAs is more concentration-specific and higher concentration (200-500 mg kg -1 ) seem to be more effective on the upper part of the plants (Atiyeh et al, 2002).…”

Section: Yield and Fruit Qualitymentioning

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.

View full text Add to dashboard Cite

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...

show abstract

“…Radioisotopes were used to show that foliar-applied fertilizers passed through the leaf cuticle and into the cells [2]. Various studies have shown that a small amount of nutrients (nitrogen, potash, or phosphate) applied by foliar spraying increases significantly the yield of crops [3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Foliar Spray of Nitrogen Fertilizer on Raised Bed Increases Yield of Transplanted Aman Rice over Conventional Method

Bhuyan

Ferdousi²,

Iqbal

2012

ISRN Agronomy

View full text Add to dashboard Cite

Bed planting with foliar nitrogen fertilizer application of rice production systems is very new, and research on it is still at introductory phase. Influence of foliar application of nitrogen fertilizer on growth and yield of transplanted aman rice and evaluation of water and fertilizer application efficiency of rice-fallow-rice cropping system were investigated under raised bed cultivation method. Results showed that foliar spray in bed planting method increased grain yield of transplanted aman rice up to 9.33% over conventional method. Foliar nitrogen fertilizer application in bed planting method increased the number of panicle m −2 , number of grains panicle −1 , and 1000-grain weight of rice than the conventional method. Sterility percentage and weed infestation were lower at foliar nitrogen fertilizer application in bed planting method than the conventional method. Thirty-nine percent of irrigation water and time for application could be saved through foliar nitrogen spray in bed planting than conventional method. Water use efficiency for grain and biomass production was higher by foliar nitrogen fertilizer application in bed planting than conventional method. Likewise, agronomic efficiency of foliar nitrogen fertilizer application in bed planting method was higher than the conventional method. This study concluded that foliar nitrogen spray in bed planting method is a new approach to get fertilizer and water use efficiency as well as higher yield compared to existing agronomic practice in Bangladesh.

show abstract

EFFECT OF HUMIC ACIDS ON GROWTH AND NITROGEN UPTAKE OF CONTAINER-GROWN OLIVE (OLEA EUROPAEA L. ÂMAURINOâ)

Cited by 20 publications

References 0 publications

Effects of foliar application of a byproduct of the two-step olive oil mill process on maize yield

Effects of foliar application of a byproduct of the two-step olive oil mill process on maize yield

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

Foliar Spray of Nitrogen Fertilizer on Raised Bed Increases Yield of Transplanted Aman Rice over Conventional Method

Contact Info

Product

Resources

About

EFFECT OF HUMIC ACIDS ON GROWTH AND NITROGEN UPTAKE OF CONTAINER-GROWN OLIVE (OLEA EUROPAEA L. ÂMAURINOâ)

Cited by 20 publications

References 0 publications

Effects of foliar application of a byproduct of the two-step olive oil mill process on maize yield

Effects of foliar application of a byproduct of the two-step olive oil mill process on maize yield

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

Foliar Spray of Nitrogen Fertilizer on Raised Bed Increases Yield of Transplanted Aman Rice over Conventional Method

Contact Info

Product

Resources

About

EFFECT OF HUMIC ACIDS ON GROWTH AND NITROGEN UPTAKE OF CONTAINER-GROWN OLIVE (OLEA EUROPAEA L. ÂMAURINOâ)