Frações orgânicas e inorgânicas do fósforo no solo influenciadas por plantas de cobertura e adubação nitrogenada

Leite, Jacqueline Nayara Ferraça; Cruz, Mara Cristina Pessôa da; Ferreira, E.; Andrioli, Itamar; Braos, Lucas Boscov

doi:10.1590/s0100-204x2016001100010

Cited by 15 publications

(10 citation statements)

References 25 publications

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“…The highest PiHCl contents were found in the treatment HR in all soil layers evaluated (Table 3). The PiHCl fraction is associated to the Pi that composes the calcium phosphates and is adsorbed to soil colloids by internal sphere complex (Leite et al, 2016). The higher PiHCl contents found in HR can be due to the weed management used, since the cut of plant species causes physical stress, making the plants to increase their photosynthetic rates and synthesis of phytohormones, such as gibberellin (Hebert et al, 2019;Liu et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Soil phosphorus fractions in an apple orchard with different weed managements

Lima

Lourenzi

Comin

et al. 2020

RSD

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The presence of weeds in apple orchards affects the dynamics of nutrients in the soil, including phosphorus (P). The objective of this study was to evaluate changes in distribution of P fractions in the soil of an apple orchard under different weed managements. The experiment was conducted in an apple orchard in the municipality of Urubici, Santa Catarina, Brazil. The following treatments were implemented in 2011: no weed management (NWM), desiccation of weeds in the apple-tree row (DR), and hoeing of weeds in the apple-tree row (HR). Soil samples of the 0-2.5, 2.5-5, 5-10, 10-15 and 15-20 cm layers were collected in the apple-tree rows at 24 months after the implementation of the experiment. The samples were subjected to chemical fractionation of P, obtaining the following fractions: PiAER, PiNaHCO3, PoNaHCO3, PiNaOH, PoNaOH, PiHCl, PiNaOH05, PoNaOH05, and Presidual. The presence of weeds increased the contents of the following soil P fractions in the surface layers: PiAER, PiNaHCO3, and PoNaHCO3, which are bioavailable to plants. A higher proportion of organic forms of P in the soil was found when the weeds were hoed; these fractions can be mineralized and used for nutrition of apple trees when labile P forms are exhausted.

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Section: Resultsmentioning

confidence: 99%

Soil phosphorus fractions in an apple orchard with different weed managements

Lima

Lourenzi

Comin

et al. 2020

RSD

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“…A absorção de fósforo pode ser estimulada pela aplicação de outros nutrientes, tais como o cálcio utilizado solos ácidos e o enxofre em solos básicos tem influência aparente no aumento da disponibilidade deste nutriente para as plantas, do mesmo modo, efeito do positivo também apresenta o nitrogênio na absorção de fósforo (LOPES, 1998). Leite et al (2016), identificaram que o cultivo de crotalária (Crotalaria juncea), lablab (Dolichos lablab) e mucuna (Mucuna aterrima) como plantas de cobertura em pré-safra de milho aumenta o P orgânico moderadamente lábil na camada superficial do solo, se comparado ao pousio (vegetação espontânea).…”

Section: Profundidade CM Tipos De Solounclassified

Propriedades químicas de argissolos vermelho–amarelo com e sem manejo agroecológico

Bulhões

Neto

Zuza

et al. 2021

RSD

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O uso intenso e/ou inadequado dos solos acarreta perda dos atributos químicos necessários para manutenção da produção agropecuária. A fertilidade do solo é apenas um entre vários fatores que determinam a magnitude do rendimento das culturas, e interfere grandemente na produtividade agrícola. Nesse contexto, objetivou-se avaliar o os efeitos nas propriedades químicas do solo frente a dois tipos de manejo com e sem métodos agroecológicos. O solo 1 recebeu manejo agroecológico (irrigação, adubação orgânica, capina, cobertura morta) e o solo 2 foi recebeu apenas gradagem e capina manual. Foram analisados o pH, as quantidades de P, K+, Ca+2, Mg+2, Na+, Al+3, H++Al+3, COT, MO, CTC, SB, V (%) e m (%) no período de agosto à setembro de 2016. O delineamento experimental utilizado foi o DBC com o fatorial 4 x 2 com 10 repetições. 4 níveis de profundidade (0-5, 5-10, 10-15 e 15-20 cm) x 2 tipos de solo. O manejo empregado no solo 1 condiciona valores de pH, CTC, SB, V (%), K2+, Ca2+, superiores ao solo 2, juntamente com Na+. 2. Ambos os solos apresentaram teores similares de Mg2+ embora a SB e V (%) seja maiores para o solo 1. 3. Os valores de Al3+, H++Al3+, m (%) foram maiores no solo 2, do mesmo a MO e o COT se encontra em nível superior.

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“…Many authors have been using the fraction proposed by Hedley [44,[54][55][56]]. Hedley's fractionation is widely used [57], majority in researches about P dynamic and cycling in soil associated with primary material, soil tillage, and use into diverse crop systems.…”

Section: Determination Of P Formsmentioning

confidence: 99%

Phosphorus in Forage Production

Serra¹,

Marchetti²,

Dupas³

et al. 2018

New Perspectives in Forage Crops

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The aim in developing this work was to summarize information about phosphorus (P) limitation and dynamic in tropical soils for forage grasses production. The major idea is direct information about limited factors affecting P availability, dynamic of P fractionation, P pools, P forms, P use efficiency, and the 4R's Nutrient Stewardship' for P-fertilizer in forage grasses. Organizing these sub-headings in a chapter can result in interesting of how P behaves under tropical soils, in order to take decision to manage P-fertilizer to accomplish forage grasses production with social, economic, and environmental benefits. As the most limiting nutrient in tropical soils, P-fertilizer in forage grasses can be more effective if the best management practices are followed. In order to avoid excess P-fertilizer application in soil or P-fertilizer response with low efficiency, it is important to understand the P dynamic and the factors associated with P adsorption in soil. Even with low amount of P requested to forages species, the P available in soil is quite low, and this knowledge is primordial to direct P-fertilizer. Tropical soils are quite limited in P content, due to the natural formation with parental material poor in P content and highly weathering condition. Thus, in order to improve phosphorus use efficiency, the 4R's must be followed to improve P use efficiency (PUE). It is not easy to improve PUE in highly weathering soil with high buffering capacity; however, all the combination of best management practices for P-fertilizer application can result in better use efficiency. Based on the scarcity of natural P-sources in the whole world, the use of alternative P-sources should be incentivized, and more researches about this issue are need for better understanding.

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Frações orgânicas e inorgânicas do fósforo no solo influenciadas por plantas de cobertura e adubação nitrogenada

Cited by 15 publications

References 25 publications

Soil phosphorus fractions in an apple orchard with different weed managements

Soil phosphorus fractions in an apple orchard with different weed managements

Propriedades químicas de argissolos vermelho–amarelo com e sem manejo agroecológico

Phosphorus in Forage Production

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