The Influence of Chemical. Forms on Foliar-Applied Nitrogen Absorption for Peach Trees

Furuya, Shooji; Umemiya, Yoshiaki

doi:10.17660/actahortic.2002.594.8

Cited by 26 publications

(17 citation statements)

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“…Watson and Fowden (1975) and Soldal and Nissen (1978) demonstrated that plant roots could take up radio-labelled amino acids and others have confirmed these studies (reviewed by Miller et al 2007;Nacry et al 2013). Foliar uptake of amino acids has also been reported (Furuya and Umemiya 2002;Maini 2006;Stiegler et al 2013).…”

Section: Protein Hydrolysates and Amino Acidsmentioning

confidence: 78%

Agricultural uses of plant biostimulants

2014

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Background Plant biostimulants are diverse substances and microorganisms used to enhance plant growth. The global market for biostimulants is projected to increase 12 % per year and reach over $2,200 million by 2018. Despite the growing use of biostimulants in agriculture, many in the scientific community consider biostimulants to be lacking peer-reviewed scientific evaluation. Scope This article describes the emerging definitions of biostimulants and reviews the literature on five categories of biostimulants: i. microbial inoculants, ii. humic acids, iii. fulvic acids, iv. protein hydrolysates and amino acids, and v. seaweed extracts.Conclusions The large number of publications cited for each category of biostimulants demonstrates that there is growing scientific evidence supporting the use of biostimulants as agricultural inputs on diverse plant species. The cited literature also reveals some commonalities in plant responses to different biostimulants, such as increased root growth, enhanced nutrient uptake, and stress tolerance.

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Section: Protein Hydrolysates and Amino Acidsmentioning

confidence: 78%

Agricultural uses of plant biostimulants

2014

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“…Aspartic acid increased both yield of fixed oil and total glucosinolates [7]. Other experiments were made with a mixture of L-alanine, L-glutamic acid, glycine, and L-lysine [8]. In this case, the rate of foliar absorption of nitrogen increased with a decrease in molecular weight of the amino acids.…”

Section: Introductionmentioning

confidence: 99%

Amino acid and soluble protein cocktail from waste keratin hydrolysed by a fungal keratinase of Paecilomyces marquandii

Veselá

Friedrich

2009

Biotechnol Bioproc E

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Waste bovine hooves and horns were enzymatically hydrolysed into soluble products intended for foliar fertilizer. With the powdered keratin at 50°C and pH 8 between 34 to nearly 60% of nitrogen was solubilized in 5 h, depending on the enzyme concentration. The reaction could further be improved by steam pretreatment of the keratin, resulting in 98% solubilisation of the nitrogen. The products of hydrolysis consisted of a mixture of soluble proteins, peptides, and free amino acids. Among the latter, 18 common amino acids were detected. Several of them were previously recognized to have a positive effect on plants. Nonpolar neutral, basic, and sulphur amino acids were present in relatively large amounts, while proline and tryptophan were not found. Comparison with other protein hydrolysates aimed for fertilizer suggests that keratin degradation products, obtained by enzymatic hydrolysis, have potential to be used for foliar fertilization, alone or in a combination with another complementary hydrolysate of a different source, such as skin or plant proteins. © KSBB

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“…The researchers' opinions on this subject differ. Wittwer et al (1967) and Furuya and Umemiya (2002) found a higher rate of N absorption by plants treated with urea as compared to nitrates and ammonium, whereas Bowmann and Paul (1992) did not observe any differences in this respect in plants treated with urea, ammonium and nitrate nitrogen, and Komosa (1990) found a higher absorption of N from fertilizers containing N-NO 3 in comparison to N-NH 4 . The effect of the applied nitrogen forms on the content of nitrates in the leaves was much clearer since -independently of the temperature in the period of solution application -the fertilization of plants with urea, ammonium nitrate and calcium nitrate increased the percentage content of NO 3 -in spinach leaves three times, on average, and only the effect of ammonium carbonate was insignificant.…”

Section: Resultsmentioning

confidence: 97%

“…Rodney (1952) in his studies on apple trees, and Bowman and Paul (1992), in their studies on ryegrass, found that foliar fertilization with urea, ammonium nitrogen and nitrate nitrogen had no effect on the content of N in the leaves of the examined plants. On the other hand, however, Wittwer et al (1967) found a higher rate of N absorption by the leaves treated with urea as compared to nitrates and ammonium, which was also confirmed by Furuya and Umemiya (2002). Scarce studies point to ambiguous effectiveness of ammonium and nitrate forms of nitrogen in foliar fertilization of plants.…”

Section: Introductionmentioning

confidence: 79%

The effect of nitrogen form and air temperature during foliar fertilization on gas exchange, the yield and nutritive value of spinach (Spinacia oleracea L.)

Borowski

Michałek

2008

Folia Horticulturae

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A pot experiment conducted in a growth chamber studied the effectiveness of foliar fertilization of spinach (Spinacia oleracea L.), with different forms of nitrogen applied with the air temperatures: 5°C, 15°C and 25°C. Nitrogen was supplied three times in the form of 1% water solutions of CO(NH 2 ) 2 , NH 4 NO 3 , NH 4 HCO 3 and Ca(NO 3 ) 2 × 4 H 2 O, with water as the control. The obtained results showed that nitrogen in the form of Ca(NO 3 ) 2 × 4 H 2 O -independent of the air temperature during solution application -is the least useful in foliar fertilization of spinach leaves, whereas the effectiveness of the other forms was similar, although the best effects were given by NH 4 NO 3 . Application of all forms of nitrogen at the air temperature of 25°C had the most positive effect on the course of gas exchange

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The Influence of Chemical. Forms on Foliar-Applied Nitrogen Absorption for Peach Trees

Cited by 26 publications

References 0 publications

Agricultural uses of plant biostimulants

Agricultural uses of plant biostimulants

Amino acid and soluble protein cocktail from waste keratin hydrolysed by a fungal keratinase of Paecilomyces marquandii

The effect of nitrogen form and air temperature during foliar fertilization on gas exchange, the yield and nutritive value of spinach (Spinacia oleracea L.)

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