Response of olive trees to foliar application of humic substances extracted from leonardite

Fernández-Escobar, R.; Benlloch, M.; Barranco, D.; Dueñas, Ángel Bosco Zambrano; Gañán, J.

doi:10.1016/s0304-4238(96)00914-4

Cited by 73 publications

(42 citation statements)

References 10 publications

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“…The two concentrations (20 and 50 mg/L) of humic acid, resourced from fertilizer, caused iron to increase to 113 and 123%, whereas humic substance derived from leonardite increased iron content to 135 and 161% in tomato roots. Fernández-Escobar et al (1999) found that application of HA stimulated chlorophyll content and accumulation of K, B, Mg, Ca and Fe in leaves of olive trees. The foliar application of humic substances becomes effective in promoting uptake and accumulation of nutrients in leaves of olive trees (Fernandez et al, 1996).…”

Section: Introductionmentioning

confidence: 93%

Effect of humic acid application on accumulation of mineral nutrition and pungency in garlic (Allium sativum L.)

Denre¹,

Ghanti²,

Sarkar³

2014

Int. J. Biotechnol. Mol. Biol. Res.

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Humic acid promote the conservation of mineral nutritions and as well as stimulate the pungency usually being more prominent in the cloves of garlic bulb. The effect of humic acid application on accumulation of mineral nutritions and pungency in garlic (Allium sativum L.) cv. 'Gangajali' was studied. Here, we observed that the maximum concentration of Ca, Fe and S were shown when plants were treated with 400 ppm humic acid. While, in the case of Mg, P and Zn content, the maximum values were observed by application of 200 ppm humic acid. The maximum concentration of K, Cu, Mn were observed when plants were treated with 300 ppm humic acid. Regarding, pungency, content was determined as pyruvic acid development significantly increased with increase in concentration of humic acid applications. Our results also showed significant positive correlations between Mg and P, Mg and Zn, P and Zn, Cu and PAD, and S and PAD, respectively. Based on average values and ANOVA of overall variables, the highest result was observed by application of 300 ppm of humic acid followed by 400 and 200 ppm of humic acid, which may be the proper value addition in garlic bulb by enhancing the mineral nutritions and pyruvic acid development that needs to be studied in the future.

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Section: Introductionmentioning

confidence: 93%

Effect of humic acid application on accumulation of mineral nutrition and pungency in garlic (Allium sativum L.)

Denre¹,

Ghanti²,

Sarkar³

2014

Int. J. Biotechnol. Mol. Biol. Res.

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“…It is believed that their application alleviates stress effects; in other words, it has positive effects on stress tolerance by stimulating nutrient uptake and improving the antioxidant system (Fernandez-Escobar et al, 1996;Buyukkeskin et al, 2011;Aydin et al, 2012). The humic acid preparation used was the same as from previous studies (Buyukkeskin et al, 2011), namely 10 ml/1L HoaglandArnon solution.…”

Section: Zincmentioning

confidence: 99%

The effects of humic acid on growth and ion uptake of mung bean (Vigna radiata (L.) Wilczek) grown under salt stress

Kalyoncu¹,

Akinci²,

Bozkurt³

2017

Afr. J. Agric. Res.

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The study aimed to determine the effects of humic acid (HA) on seedlings of a salt-sensitive plant, mung bean (Vigna radiata (L.) Wilczek), grown on 50 mM (S1) and 100 mM (S2) NaCl concentrations. In controlled room conditions, mung bean seedlings were planted in pots containing torf and perlite mixture and salt effects were observed. The growth parameters were plant height, number of leaves, leaf area, leaf and stem fresh and dry weights in which all parameters significantly decreased at both salt levels. Nutrient analyses of Na, K and Ca were conducted by flame photometry (FP), and Mg, Mn, Zn were tested by inductively coupled plasma atomic emission spectrometry (ICP-AES), for the above and below ground parts of mung bean seedlings. Both salt treatments increased Na content significantly, however 10 ml addition of HA to those samples (S1HA and S2HA; 50 mM NaCl and 100 mM NaCl, respectively) caused reductions in Na contents of the above-ground parts of mung bean compared to plants watered with only Hoagland-Arnon solutions (HO). On the other hand, in the roots of mung bean seedlings, Na content rose significantly in S2 compared with control, but the amount of Na in S2HA significantly increased compared with S2 treated plants. K content was significantly decreased in both salt concentrations, while SHA1 and SHA2 caused slight increases in both above and underground parts of seedlings. In the experiment, SHA2 increased the content of K, Mg, Ca, Mn and Zn in the root of mung bean seedlings compared with both S1 and S2 treatments.

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“…Segundo Maggioni et al (1987), os ácidos húmicos podem influenciar a absorção de nutrientes via efeito enzimático, por intermédio da atividade de ATPase dependente de potássio (K) e magnésio (Mg). Fernández-Escobar et al (1996) também mostraram a influência positiva da aplicação de ácidos húmicos na absorção de K, Mg, Ca, B e Fe.…”

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Crescimento e nutrição de clone de eucalipto em resposta à aplicação de concentrações de c-ácido húmico

Pinheiro

Silva

Neto

2010

Rev. Bras. Ciênc. Solo

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RESUMOOs efeitos das substâncias húmicas nas propriedades dos solos são conhecidos, porém poucos são os estudos que avaliam os efeitos desses materiais nas plantas; assim, dependendo da concentração e da natureza química das moléculas húmicas aplicadas, pode haver maior expansão radicular, incremento na absorção de nutrientes e maior crescimento das culturas. Com o objetivo de avaliar os efeitos de concentrações de C-ácido húmico na nutrição e no crescimento de mudas de eucalipto, foi realizado um experimento em solução nutritiva, em casa de vegetação. Os tratamentos constituíram-se de duas fontes de ácidos húmicos (material húmico -MH e ácido húmico p.a. -AH p.a.), sendo cada fonte adicionada na solução nutritiva nas seguintes concentrações de C-ácido húmico: 0, 10, 30 e 150 mg L -1 . Outros tratamentos foram também testados, utilizando-se a fonte AH p.a. nas concentrações de 0, 10, 30 e 150 mg L -1 C-ácido húmico, acrescidas de 21 mg L -1 de ácido cítrico e 9 mg L -1 de ácido oxálico. Foram analisados a condutividade eletrolítica na solução nutritiva, diâmetro do caule e altura das plantas, matéria seca de caule, de folhas, da parte aérea, da raiz e total, relação matéria seca de raiz:parte aérea, acúmulo de nutrientes no caule e nas folhas. A altura e o diâmetro de caule diminuíram linearmente com a aplicação de concentrações de C-ácido húmico da fonte AH p.a. A utilização do MH, em baixas concentrações de C-ácido húmico (0,07-4,3 mg L -1 ), propiciou a máxima produção de matéria seca de raiz, caule, folha e total. O maior acúmulo de alguns nutrientes (principalmente N, P e B) resultou, em alguns tratamentos, em reduzidos incrementos (2,4 a 9,3 %) nas produções de matéria seca de raiz, folha, caule e total; assim, não é aconselhável, em solução nutritiva, a aplicação das fontes de ácidos húmicos utilizadas neste estudo para o cultivo de mudas de eucalipto.Termos de indexação: substâncias húmicas, ácido cítrico, ácido oxálico, crescimento radicular, complexos organometálicos.

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Response of olive trees to foliar application of humic substances extracted from leonardite

Cited by 73 publications

References 10 publications

Effect of humic acid application on accumulation of mineral nutrition and pungency in garlic (Allium sativum L.)

Effect of humic acid application on accumulation of mineral nutrition and pungency in garlic (Allium sativum L.)

The effects of humic acid on growth and ion uptake of mung bean (Vigna radiata (L.) Wilczek) grown under salt stress

Crescimento e nutrição de clone de eucalipto em resposta à aplicação de concentrações de c-ácido húmico

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