Micronutrient foliar intake by different crop plants, as affected by accompanying urea

El‐Fouly, M. M.; Fawzi, A. F. A.; Mobarak, Zeinab M.; Aly, El-Sayed; Abdalla, F. E.

doi:10.1007/978-94-009-0585-6_45

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…From these data, it could be concluded that continuous addition of Fe, Mn and Zn through irrigation water to high‐pH sandy soil deficient in these nutrients, where root growth was contained within a limited volume (in pots), led to increases in growth and micronutrient uptake (Fe, Mn and Zn). These results are similar to those obtained through foliar application of micronutrients (El‐Fouly et al. 1990, Mobarak et al.…”

Section: Resultssupporting

confidence: 91%

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Effects of Soil Treatment with Iron, Manganese and Zinc on Growth and Micronutrient Uptake of Sunflower Plants Grown in High‐pH Soil

El‐Fouly

Nofal

Mobarak

2001

J Agronomy Crop Science

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The purpose of this work was to study the effects of adding different concentrations of iron (Fe), manganese (Mn) and zinc (Zn) in irrigation water to high‐pH sandy soil on the growth and micronutrient uptake of sunflower plants (Helianthus annus L., cv. Giza 1). The experiment was carried out in Mitscherlish pots under greenhouse conditions. Low Fe, Mn and Zn concentrations were found to have a positive effect on the micronutrient contents of the plant organs. The number of leaves and the leaf area were increased by addition of Fe, Mn and Zn. Root size was increased by addition of Fe and Mn. Stem and root lengths were increased by Mn only. It could be concluded that continuous addition of Fe, Mn and Zn in irrigation water to high‐pH sandy soil deficient in these nutrients, where root growth was contained within a limited volume (in pots), led to increases in growth and micronutrient uptake (Fe, Mn and Zn). Further studies are needed to determine whether similar effects will be found under field conditions.

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Section: Resultssupporting

confidence: 91%

“…Under Egyptian conditions, positive eects of micronutrients on crops were reported in several studies, e.g. those by El-Fouly et al (1990) and Abdalla and Mobarak (1992), who found increases in plant growth in terms of plant height and dry weight in response to micronutrient (Fe, Mn and Zn) foliar spray.…”

Section: Dry Weightmentioning

confidence: 86%

Effects of Soil Treatment with Iron, Manganese and Zinc on Growth and Micronutrient Uptake of Sunflower Plants Grown in High‐pH Soil

El‐Fouly

Nofal

Mobarak

2001

J Agronomy Crop Science

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“…Foliar uptake of urea and transport of urea N is efficient as long as the treatment is made before the onset of leaf senescence (Rosecrance et al, 1998b). Urea has also been shown to improve the uptake of micronutrients (El-Fouly et al, 1990) which could make this an even more appealing practice to fruit growers. Peach growers in California routinely apply zinc foliar sprays in the fall (Johnson and Uriu, 1989).…”

mentioning

confidence: 99%

Can We Approach Complete Dependence on Foliar-applied Urea Nitrogen in an Early-maturing Peach?

Johnson¹,

Rosecrance²,

Weinbaum³

et al. 2001

jashs

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The suspected contributory role of soil fertilization to nitrate pollution of groundwater has encouraged exploration of novel fertilizer management strategies. Foliar-applied urea has long been used to supplement soil N applications, but there have been no apparent attempts to replace soil N applications completely in deciduous orchard culture. Two experiments were conducted to study the effect of foliar-applied low biuret urea on productivity and fruit growth of the early maturing peach [Prunus persica L. Batsch (Peach Group)] cultivar, Early Maycrest. In a 3-year experiment, a total foliar urea regime was compared to an equivalent amount of N applied to the soil. The foliar treatment supplied adequate amounts of N to the various organs of the tree including the roots, shoots, and fruit buds, but mean fruit weights were lower than in the soil-fertilized treatment. In a 2-year experiment, a 50%-50% combination treatment of soil-applied N in late summer with foliar-applied N in October, maintained yields and fruit weight equal to the soil-fertilized control. Some soil-applied N appears necessary for optimum fruit growth. Soil N application may be needed to support root proliferation and associated processes, but we did not determine a threshold amount of soil-applied N needed. The combination treatment also reduced excessive vegetative growth which is characteristic of early maturing peach cultivars. Therefore, this combination treatment offers promise as a viable commercial practice for maintaining tree productivity and controlling excessive vegetative growth in peach trees.

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“…Üre uygulaması yapılmayan koşullarda meyve azot konsantrasyonları, Akça, Santa Maria, Deveci ve çeşitlerinde sırası ile 3,37, 4,38 ve 2,90 mg/kg iken, bu değer yapraktan üre uygulaması yapıldığında sırası ile 4,25, 5,53 ve 5,92 mg/kg'a çıkmıştır. Nitekim yapraktan üre uygulamalarının elma [15], şeftali [44], armut [45] ve kirazda [7] N oranını arttırdığı, aynı zamanda mikro element alımını iyileştirdiği bildirilmiştir [46]. Zn konsantrasyonu Santa Maria ve Deveci çeşitlerinde üre uygulaması ile önemli oranda artarken, Fe, K, Ca ve Mg konsantrasyonları yalnızca Santa Maria çeşidinde fark oluşturmuş, incelenen değerler üre uygulaması ile önemli oranda artış göstermiştir.…”

Section: Mineral Madde Konsantrasyonlarıunclassified

Yapraktan Üre Uygulamasinin Farkli Armut (Pyrus Communis L.) Çeşi̇tleri̇nde Veri̇m, Meyve Kali̇tesi̇ Ve Bi̇oakti̇f Bi̇leşi̇kler Üzeri̇ne Etki̇si̇

Küçüker¹,

Öztürk

Özkan

et al. 2016

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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ÖZETBu çalışmada, üç farklı armut çeşidinde (Akça, Santa Maria ve Deveci) yapraktan üre uygulamasının verim, meyve kalitesi ve bioaktif bileşikler üzerine etkisinin belirlenmesi amaçlanmıştır. Tam çiçeklenmeden 30 ve 60 gün sonra üre içeren solüsyon (% 0 ve % 0,1 CH 4 N 2 O) tüm ağaçlara iki kez püskürtülmüştür. Kontrol uygulaması ile karşılaştırıldığında, verim, meyve ağırlığı ve geometrik ortalama çap, üre uygulaması ile önemli oranda artmıştır. Renk özellikleri, suda çözünebilir kuru madde, pH ve titre edilebilir asitlik değerleri üzerine üre uygulamasının istatistiksel bakımdan bir etkisi olmamıştır. Üre uygulaması, meyve eti sertliğini ve toplam fenolik madde içeriğini önemli oranda azaltmıştır. Tüm çeşitlerin toplam antioksidan aktivitesi üre uygulaması ile azalmıştır. Üre uygulaması; Akça ve Santa Maria çeşidinde naringenin, Deveci çeşidinde ise rutin içeriğini önemli oranda artırmıştır. Üre uygulaması, tüm çeşitlerin azot içeriğini, Deveci çeşidinde çinko, Santa Maria çeşidinde ise potasyum, kalsiyum ve magnezyum içeriğini de önemli oranda artırmıştır.Anahtar Kelimeler: Armut, üre, fenolik, mineral madde içeriği, verim THE EFFECT OF FOLIAR UREA TREATMENT ON YIELD, FRUIT QUALITY AND BIOACTIVE COMPOUNDS OF DIFFERENT PEAR VARIETIES (PYRUS COMMUNIS L.) ABSTRACTThe effects of foliar urea treatment on yield, fruit quality and bioactive compounds of three different pear cultivars (Akça, Santa Maria and Deveci) were investigated in this study. Whole trees were sprayed twice with an aqueous solution containing urea (0% and 0.1% CH 4 N 2 O) 30 and 60 days after the full bloom for each cultivar separately. The per tree yield, fruit weight and geometric mean diameter were significantly increased with urea treatment according to control. The color characteristics, soluble solids content, pH and titratable acidity didn't change with the urea treatment. The urea treatment significantly reduced fruit flesh firmness. Urea treatment significantly reduced total phenolic content of Santa Maria. Total antioxidant activity of all varieties significantly reduced with the urea treatment. Urea treatment significantly increased naringenin content of Akça and Santa Maria, and rutin content of Deveci pear. The nitrogen content of the pear varieties was significantly increased with urea treatment. Additionally, urea treatment significantly increased zinc content of Deveci, and potassium, calcium and magnesium content of Santa Maria pear.

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Micronutrient foliar intake by different crop plants, as affected by accompanying urea

Cited by 6 publications

References 12 publications

Effects of Soil Treatment with Iron, Manganese and Zinc on Growth and Micronutrient Uptake of Sunflower Plants Grown in High‐pH Soil

Effects of Soil Treatment with Iron, Manganese and Zinc on Growth and Micronutrient Uptake of Sunflower Plants Grown in High‐pH Soil

Can We Approach Complete Dependence on Foliar-applied Urea Nitrogen in an Early-maturing Peach?

Yapraktan Üre Uygulamasinin Farkli Armut (Pyrus Communis L.) Çeşi̇tleri̇nde Veri̇m, Meyve Kali̇tesi̇ Ve Bi̇oakti̇f Bi̇leşi̇kler Üzeri̇ne Etki̇si̇

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