Análise multivariada de espécies florestais nativas em relação aos atributos químicos e texturais do solo na região de Cotriguaçu – MT

Tavares, Lorena de Souza; Weber, Oscarlina Lúcia dos Santos; Valadão, Franciele Caroline de Assis; Espinosa, Mariano Martínez

doi:10.5902/198050983577

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…Higher contents of polyphenols can have a strong effect on litter quality (Lambers et al 2008), which may be the case with A. tibourbou, as its leaves have high content of rosmarinic acid (Souza et al 2012) and it had the largest effect on soil fertility, especially on K content. Apeiba tibourbou is commonly found in secondary forests across the Amazon, and probably prefers soils with higher fertility (Tavares et al 2019). Hence, because of its nutrient requirement, it may recycle nutrients from deeper layers (Sileshi et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Effect of Amazonian tree species on soil and pasture quality in silvopastoral systems

et al. 2021

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With the expansion of livestock in the Amazon region, a high percentage of pasture areas are degraded and unproductive. Novel strategies are needed, including the use of native tree species, to simultaneously achieve economic and ecosystem benefits. This study aimed at assessing the effects of five multipurpose native tree species on soil fertility and forage quality of Urochloa brizantha pastures in the southern Amazon. Soil and forage samples were collected under the crown and adjacent to 25 isolated trees belonging to five species during a dry and a rainy season. The presence of native trees positively affected the level of potassium, calcium and manganese in the soil, as well as the mineral matter and crude protein of the forage, especially in the dry season, suggesting a protective effect against the seasonal drought. The tree species had variable effects on soil fertility and forage quality. Soil under Apeiba tibourbou had higher potassium levels, while the forage under Handroanthus serratifolius had higher protein and fiber content. Our results indicate that it is important to diversify silvopastoral systems in the Amazon through the use of native tree species, contributing to the design of novel silvopastoral strategies in the region. Common multipurpose tree species with widespread natural distribution could be used as a complementary aspect of pasture management to provide a protective effect against drought, contribute to enhanced nutrient cycling and even increase forage quality.

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Section: Discussionmentioning

confidence: 99%

Effect of Amazonian tree species on soil and pasture quality in silvopastoral systems

et al. 2021

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“…Such results were expected, since exchangeable aluminum, in addition to providing acidity to the solution to the soil, can compete with the cationic nutrients for negative ions present in the soil colloids. Such competition causes the leaching of these basic cations (Tavares, Valadão, Weber, & Espinosa, 2019), which highlights the relevance of understanding the effect of using green manures and the management of soil degraded by mining, in order to ensure success in restoration projects.…”

Section: Discussionmentioning

confidence: 99%

Effects of the planting of legume species and soil conditions on the recovery of a sand and pebble mining area

et al. 2020

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Extensive areas have been degraded worldwide through mineral extraction. Mining class II, especially sand and pebble mining (gravel extraction), has grown significantly in Brazilian Amazonia mainly in the State of Pará. In this context, the development of suitable and efficient recovery techniques is necessary to ensure mined land restoration. The objective of this study was to evaluate the effects of different types of management and green manure methods to recover degraded soil after the mining of pebbles and sand. The experiment was implemented in the northern region of the municipality of Capitão Poço, State of Pará. The procedures we used were: a randomized block design experiment, with a 4 × 3 factorial arrangement. Four legume species were tested: Cajanus cajan (L.), Canavalia ensiformis (L.) DC, Crotolaria juncea (L.), and Mucuna pruriens (L.); in addition, three soil conditions were also tested: exposed soil, topsoil, and hydrogel. Results of the analyses showed how the root collar diameter, stem length, fertility, germination, green and dry biomass varied; the variable topsoil had better results when compared to the samples that used hydrogel and those established on exposed soil in practically all the mean comparisons for isolated factors. Besides this, C. ensiformis (L.) DC and M. pruriens (L.) showed a better development, especially when grown in soils with topsoil deposition as a reconformed substrate. From these studies we conclude that the use of this substrate is to be recommended. C. ensiformis (L.) DC and M. pruriens (L.) are also recommended for restoration.

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“…All these authors used univariate statistics to interpret their results; nonetheless, this type of analysis makes it difficult to have an all-encompassing view of the effect of water deficit on all traits of agronomic importance. Conversely, multivariate statistics may be a viable alternative to pinpoint the relevant variables, thereby giving valuable insight into the biological phenomenon under study (Tavares, Valadão, Santos-Weber, & Espinosa, 2019). Therefore, using multivariate analysis can provide greater scientific support for the adoption of deficit irrigation techniques.…”

Section: Introductionmentioning

confidence: 99%

Canonical correlation analysis applied to regulated deficit irrigation in ‘Tommy Atkins’ mango trees

et al. 2023

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The objective was to identify the effect of regulated deficit irrigation on physiological, yield and root descriptors of ‘Tommy Atkins’ mango tree grown in a semi-arid region of Brazil. The work was carried out during two production cycles on an 11-year-old mango orchard. The design was randomized blocks with five treatments and six replications. Irrigation treatments were based on the trees’ development stage: T1, irrigation supplying 100% of the crop evapotranspiration (ETc) in three production stages: fruit set stage (SI), fruit expansion stage (SII), and physiological maturation stage of the fruits (SIII); T2, 50% ETc in SI and 100% ETc in SII and SIII; T3, 100% ETc in SI and SIII and 50% ETc in SII; T4, 100% ETc in SI and SII, and 50% ETc in SIII; and T5, without irrigation in all three stages. Physiological data were measured once per stage. After harvesting the second cycle, roots were collected, following a completely randomized design, with five treatments and three replications, to determine the total root length density. Total or partial water deficit in ‘Tommy Atkins’ mango trees was identified by decreasing transpiration (E) and photosynthesis (A) and increasing leaf temperature (Tleaf). The total root length density is similar in all irrigation strategies up to 1 m horizontal distance and 0.10 m depth. Water deficit applied in the physiological maturation stage improves yield and water use efficiency.

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Análise multivariada de espécies florestais nativas em relação aos atributos químicos e texturais do solo na região de Cotriguaçu – MT

Cited by 3 publications

References 11 publications

Effect of Amazonian tree species on soil and pasture quality in silvopastoral systems

Effect of Amazonian tree species on soil and pasture quality in silvopastoral systems

Effects of the planting of legume species and soil conditions on the recovery of a sand and pebble mining area

Canonical correlation analysis applied to regulated deficit irrigation in ‘Tommy Atkins’ mango trees

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