Theoretical chemical characterization of phosphate‐metal–humic complexes and relationships with their effects on both phosphorus soil fixation and phosphorus availability for plants

Urrutia, Óscar; Guardado, Inaki; Erro, Javier; Mandado, Marcos; García-Mina, José M.

doi:10.1002/jsfa.5756

Cited by 59 publications

(50 citation statements)

References 22 publications

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“…Esse fato pode estar relacionado com a lenta decomposição e mineralização de P desses resíduos, que favoreceu menor retenção desse nutriente no solo. Menor adsorção e maior aproveitamento de P pelas plantas foi observado por Urrutia et al (2013), quando utilizaram fertilizante fosfatado de liberação lenta.…”

Section: Ph Em áGua Nos Solos Com Fontes Inorgânicas Dos Nutrientes (unclassified

Disponibilidade E Recuperação De Nutrientes De Resíduos Culturais Em Solo Com Diferentes Texturas

Maluf

Soares

Silva

et al. 2015

Rev. Bras. Ciênc. Solo

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Resumoos resíduos de culturas agrícolas aportados sobre a superfície do solo, além da proteção física, podem liberar quantidades significativas de nutrientes ao solo pela decomposição deles; porém, a disponibilidade desses nutrientes às plantas é um fator pouco estudado. avaliaram-se os teores totais de c orgânico e n, o pH e a disponibilidade e taxa de recuperação dos macronutrientes provenientes da ciclagem biogeoquímica de diferentes resíduos culturais ao longo do tempo, em solos com texturas construídas. os tratamentos consistiram em fatorial 6 × 4 × 5, composto por seis tratamentos no primeiro fator, sendo quatro resíduos culturais: milho, braquiária, feijão, estilosantes, e dois controles, ambos sem resíduo e um com adição de fontes inorgânicas dos nutrientes; quatro diferentes texturas formadas a partir de um mesmo solo e cinco tempos de avaliação, após o início da incubação: 0, 25, 75, 125 e 175 dias; utilizou-se delineamento inteiramente casualizado, com quatro repetições. O tipo de resíduo, a textura do solo e o tempo de incubação influenciaram os teores totais de C orgânico e N, o pH, a disponibilidade e a taxa de recuperação de p, K, ca, mg e s. os teores totais de c orgânico e n nos solos diminuíram ao longo da incubação. Os resíduos de braquiária e estilosantes acidificaram o solo. O resíduo de braquiária apresentou-se como potencial fonte de K; e o de feijão, de S. O resíduo de milho apresentou as maiores taxas de recuperação de p em solos de textura média e argilosa. palavras-chave: ciclagem de nutrientes, fertilidade do solo, carbono orgânico, nitrogênio total, pH do solo.

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Section: Ph Em áGua Nos Solos Com Fontes Inorgânicas Dos Nutrientes (unclassified

Disponibilidade E Recuperação De Nutrientes De Resíduos Culturais Em Solo Com Diferentes Texturas

Maluf

Soares

Silva

et al. 2015

Rev. Bras. Ciênc. Solo

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“…These studies also showed that these complexes were stable and soluble in soil solutions with pH values ranked between 4 and 8 [41,42]. Other studies showed that these humic-metal-phosphate complexes prevented phosphate soil fixation and provided available P to different plant species [46]. Therefore, the application of these types of humic-metal-phosphate complexes has great potential interest to enhance the agronomic efficiency of P-compound fertilizers.…”

Section: The Fabrication Of Humic-mineral Complexes During the Manufamentioning

confidence: 92%

“…Obtained humic-metalphosphate complexes were only partially soluble in water but totally soluble in rhizospheric root exudates and neutral ammonium citrate (an indicator of potential P availability for plants) [47,49]. The main interest of compound fertilizers based on these types of complexes is that their potential soil fixation (P retrogradation) and leaching are very low due to their low water solubility, while they are able to provide available P for plants [46,47]. However, plant roots need to interact in some way with fertilizer granule to solubilize phosphate by the action of root exudates [46,47] (Fig.…”

Section: The Fabrication Of Humic-mineral Complexes During the Manufamentioning

confidence: 99%

“…The main interest of compound fertilizers based on these types of complexes is that their potential soil fixation (P retrogradation) and leaching are very low due to their low water solubility, while they are able to provide available P for plants [46,47]. However, plant roots need to interact in some way with fertilizer granule to solubilize phosphate by the action of root exudates [46,47] (Fig. 9).…”

Section: The Fabrication Of Humic-mineral Complexes During the Manufamentioning

confidence: 99%

“…9). Consequently, these fertilizers, called Rizosphere Controlled Fertilizers (RCF) [47], are sensitive to plant P needs in some way since their efficiency implies the activation of some of the root-specific responses to P limitation [46,47].…”

Section: The Fabrication Of Humic-mineral Complexes During the Manufamentioning

confidence: 99%

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Incorporation of humic-derived active molecules into compound NPK granulated fertilizers: main technical difficulties and potential solutions

Erro

Urrutia

Baigorri³

et al. 2016

Chem. Biol. Technol. Agric.

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Numerous studies carried out both in open field and laboratory scale have provided experimental evidence for a beneficial action of humic substances (HS) on plant growth and mineral nutrition. In fact, many products containing diverse concentrations of humic substances, mainly humic and fulvic acids, are marketed as plant growth enhancers all over the world. However, the incorporation of molecules containing humic substances into the granules of compound NPK fertilizers is not a common practice mainly due to technical difficulties and problems associated with the manufacture process of these mineral fertilizers. These problems are normally linked to the potential deleterious effects of granulation conditions (principally, heat and pH) on the structure and properties of molecules containing humic substances. In this review, we discuss several strategies for the incorporation of active molecules containing humic substances into granules of NPK compound fertilizers as well as the main constraints that have to be considered in this process, which normally depend on the agronomical results intended with the preparation of special humic-containing NPK compound fertilizers. We also discuss why, in our opinion, the beneficial action of HS in NPK compound fertilizers is more related to the "so called" indirect effects of HS on plant growth than to the "so called" direct effects.

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Applications in Agriculture

2021

Low‐Rank Coal Applications in Agriculture

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Theoretical chemical characterization of phosphate‐metal–humic complexes and relationships with their effects on both phosphorus soil fixation and phosphorus availability for plants

Abstract: The results indicated the potential efficiency of PMHA-based fertilizers to optimize P fertilization for crops cultivated in soils with high P fixation ability.

Cited by 59 publications

References 22 publications

Disponibilidade E Recuperação De Nutrientes De Resíduos Culturais Em Solo Com Diferentes Texturas

Disponibilidade E Recuperação De Nutrientes De Resíduos Culturais Em Solo Com Diferentes Texturas

Incorporation of humic-derived active molecules into compound NPK granulated fertilizers: main technical difficulties and potential solutions

Applications in Agriculture

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