Phosphorus Forms in Ultisol Submitted to Burning and Trituration of Vegetation in Eastern Amazon

Farias, Samuel Christian Cohen; Júnior, Mário Lopes da Silva; Ruivo, Maria de Lourdes Pinheiro; Rodrigues, Possidônio Guimarães; Melo, Vânia Silva de; Costa, Adriane da Rocha; Júnior, João Cardoso de Souza

doi:10.1590/18069657rbcs20150198

Cited by 7 publications

(7 citation statements)

References 47 publications

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“…Soils of the Brazilian Cerrado are highly weathered with low natural fertility, high acidity, low cation exchange capacity, low organic matter and high aluminum concentration (Farias et al, 2016). All these factors influence seedling production of some species to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and Potassium Fertilization in the Initial Growth of Annona crassiflora Mart.

et al. 2019

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Annona crassiflora Mart. presents medicinal and food potential, and is also used in the recovery of degraded areas, however, little is known about its nutritional requirements. The aim of this work was to analyze the initial growth of A. crassiflora submitted to nitrogen and potassium fertilization. The experiment was conducted with a complete randomized block design with four replicates, each consisting of five nitrogen and potassium doses (0, 50, 100, 150 and 200 mg dm-3). Results were submitted to regression analysis. The species showed significant response for nitrogen fertilization regarding biometric variables, biomass, DQI and nutritional contents at doses of 100 to 200 mg dm-3. On the other hand, potassium only influenced DQI, nutritional content and accumulation of A. crassiflora seedlings.

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Section: Introductionmentioning

confidence: 99%

Nitrogen and Potassium Fertilization in the Initial Growth of Annona crassiflora Mart.

et al. 2019

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“…However, chop-and-mulch has not always increased soil carbon stocks (Perrin et al, 2014). A recent study in eastern Amazon that compared the effects of slash-and-burn and chop-and-mulch systems concluded that mulching increases soil phosphorus availability (Farias et al, 2016). However, these authors did not consider that P fertilizer was added to the chop-and-mulch area in the first (Davidson et al, 2008) as well as in the subsequent crop-fallow cycles (O.…”

Section: Introductionmentioning

confidence: 99%

“…Chop-and-mulch areas have to be fertilized to overcome nutrient immobilization after soil tillage (Kato et al, 1999). Thus, the conclusion of Farias et al (2016) is not valid because in their experiment the effects of plant strategies to acquire P could not be separated from the contribution of fertilizer-P. In fact, further investigation is needed to understand the effects of chop-and-mulch systems on P cycling in the eastern Amazon.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Fertilization Increases Biomass and Nutrient Accumulation Under Improved Fallow Management in a Slash-and-Mulch System in Eastern Amazonia, Brazil

Rangel‐Vasconcelos

Kato

Vasconcelos

et al. 2017

Rev. Bras. Ciênc. Solo

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Improvement of fallow vegetation can have a positive impact on the productivity of slash-and-mulch systems in eastern Amazonia. Phosphorus fertilization can increase biomass and nutrient stocks in the fallow phase, thereby improving nutrient cycling and crop productivity. Here, we compared biomass and nutrient stocks under three fallow management strategies: (1) natural fallow (regrowth vegetation) -NF; (2) NF vegetation improved with leguminous trees (Sclerolobium paniculatum Vogel and Inga edulis Mart.) -IF; and (3) NF vegetation improved with leguminous trees plus phosphorus fertilization -IF +P . We quantified above-and belowground biomass and N, P, K, Ca, and Mg stocks after 23 months of fallow. The IF +P increased aboveground (leaf + branch + stem + liana) biomass and N, P, Ca, and Mg stocks, compared to NF. Similarly, total (aboveground + belowground) biomass and N and P stocks were higher for IF +P than for NF. The differences in aboveground biomass between NF and improved fallow managements were attributed exclusively to the contribution of the tree species enriching fallow vegetation. Phosphorus application increased the aboveground biomass accumulation of the species for fallow improvement. Improving the fallow vegetation with P-fertilized, fast-growing, N-fixing species represents an efficient management strategy to accelerate the reestablishment of biomass and nutrient stocks in slash-and-mulch systems in Amazonia.

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“…Brazilian soils are notably lacking in phosphorus (P), due to the characteristics of the source material and its strong interaction with soil components (Farias et al, 2016). The referred deficiency is found when the efficiency of P recovery, that is, what returns to plant production, is between 5 to 25% of what is applied (Yang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Physical, Chemical, Morphological and Mineralogical Characterization Surface and Subsurface in Hydromorphic and Non-hydromorphic Soil of the Central Amazon

Damaceno¹,

Silva²,

Lima³

et al. 2020

JAS

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Amazonian soils have some physical, chemical and mineralogical differences, understanding the differences is important to understand the behavior of nutrients in the soil, especially phosphorus. The study was carried out in two types of soils: a Hydromorphic soil profile and a Non-hydromorphic soil profile in the Central Amazon region of Brazil, located in the metropolitan area of Manaus. Five depths were sampled: 0.00-0.05; 0.05-0.1; 0.1-0.2; 0.2-0.4; and 0.4-0.6 m. Physical, chemical, mineralogical and morphological attributes of both soils were studied. With the exception of clay, the levels of sand and silt remained stable in depth. The levels of organic matter gradually decrease in depth. The pH in water and in KCl, ∆pH, point of zero load, were similar between the surface and subsurface soils. Al 3+ , H + +Al 3+ , CECt, CECT and clay activity were similar in Non-hydromorphic soil and increase in surface (< 0.2 m) and stabilize in subsurface (> 0.2 m). In both soils, the bases are reduced in subsurface (> 0.2 m). Aluminum and iron oxalate reduce with greater expressiveness in Non-hydromorphic soil. Aluminum and dithionite iron exhibit the same behavior. The levels of Goethite (Gt) and Hematite (Hm) are high in depth in the Non-hydromorphic soil and decrease in the Hydromorphic soil. There are sensitive distinctions between soils, due to the imposed edaphoclimatic conditions.

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Phosphorus Forms in Ultisol Submitted to Burning and Trituration of Vegetation in Eastern Amazon

Cited by 7 publications

References 47 publications

Nitrogen and Potassium Fertilization in the Initial Growth of Annona crassiflora Mart.

Nitrogen and Potassium Fertilization in the Initial Growth of Annona crassiflora Mart.

Phosphorus Fertilization Increases Biomass and Nutrient Accumulation Under Improved Fallow Management in a Slash-and-Mulch System in Eastern Amazonia, Brazil

Physical, Chemical, Morphological and Mineralogical Characterization Surface and Subsurface in Hydromorphic and Non-hydromorphic Soil of the Central Amazon

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