Patents on Periphery of the Amazon Rainforest

Moura, Emanoel Gomes de; Araújo, José Ribamar Gusmão; Monroe, Paulo Henrique Marques; Nascimento, Ivaneide de Oliveira; Aguiar, A. C. F.

doi:10.2174/1876142910901020142

Cited by 4 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a local context, the rise in demand for farm land and population increase have led to ever-shorter fallow periods between burnings. The most fire-susceptible species are eliminated, which allows more resistant species to dominate, thereby reducing biodiversity and impoverishing the ecosystem (Moura et al, 2009a).…”

Section: Introductionmentioning

confidence: 99%

Environmental and agricultural benefits of a management system designed for sandy loam soils of the humid tropics

Aguiar

Amorim

Coelho

et al. 2009

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

SUMMARYA sustainable management of soils with low natural fertility on family farms in the humid tropics is a great challenge and overcoming it would be an enormous benefit for the environment and the farmers. The objective of this study was to assess the environmental and agronomic benefits of alley cropping, based on the evaluation of C sequestration, soil quality indicators, and corn yields. Combinations of four legumes were used in alley cropping systems in the following treatments: Clitoria fairchildiana + Cajanus cajan; Acacia mangium + Cajanus cajan; Leucaena leucocephala + Cajanus cajan; Clitoria fairchildiana + Leucaena leucocephala; Leucaena leucocephala + Acacia mangium and a control. Corn was used as a cash crop. The C content was determined in the different compartments of soil organic matter, CEC, available P, base saturation, percentage of water saturation, the period of the root hospitality factor below the critical level and corn yield. It was concluded that alley cropping could substitute the slash and burn system in the humid tropics. The main environmental benefit of alley cropping is the maintenance of a dynamic equilibrium between C input and output that could sustain up to 10 Mg ha -1 of C in the litter layer, decreasing atmospheric CO 2 levels. Alley cropping is also beneficial from the agricultural point of view, because it increases base saturation and decreases physical resistance to root penetration in the soil layer 0 -10 cm, which ensures the increase and sustainability of corn yield.Index terms: corn, alley cropping, litterfall, rootability.(

show abstract

Section: Introductionmentioning

confidence: 99%

Environmental and agricultural benefits of a management system designed for sandy loam soils of the humid tropics

Aguiar

Amorim

Coelho

et al. 2009

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…A rise in population has increased the demand for cultivable land and as a result, the time that lands lie fallow between successive burnings is progressively becoming short. This process is leading to the extinction of those species that are most sensitive to burning, allowing for more resistant species to predominate, thereby diminishing the region's biodiversity, and impoverishing its ecosystems (Moura et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…To create a sustainable agroecosystem under these conditions, it would be better to supply nutrients through microbiologically mediated processes instead of saturating the soil with soluble nutrients (Drinkwater and Snapp, 2007). From the perspective of sustainability, N availability is of fundamental importance because of the high crop demand and high N mobility in the soil-plant system (Aguiar et al, 2010).…”

mentioning

confidence: 99%

Soil Management and Efficiency of Rhizobia Strains of Cowpea Vigna unguiculata (L.) Walp. in the Tropics

Santos

Aguiar

Silva

et al. 2011

Chilean J. Agric. Res.

View full text Add to dashboard Cite

In the humid tropics, the largest obstacle to the implementation of sustainable farming systems is the reduced efficiency of nutrient use by crops. This study assesses the effectiveness of five selected rhizobia strains in symbiosis with cowpea (Vigna unguiculata (L.) Walp.), with the objective of replacing N fertilization in the predominant agricultural system used by smallholder farmers. The study was carried out in three adjacent areas with distinct agricultural uses: conventional tillage, itinerant agriculture, and a no-till system. The experimental design was in randomized complete blocks with four replicates and seven treatments: five rhizobia strains (BR3262, BR3267, BR3299, INPA3-11B, and UFLA 3-84) and two controls without inoculation (one without mineral N and another fertilized with 74 kg N ha -1 ). We measured the dry mass of 100 grains, nodules and shoots, as well as cowpea yields and calculated relative and absolute efficiency indices for dry biomass production of cowpea shoots. Agricultural uses affected the number and dry mass of the nodules and, consequently, the mass of the dry plant matter and bean yield. In terms of yield, there was a major difference between the conventional and the itinerant systems. Yield was around four times as high in the itinerant system (1009.9 kg ha -1 compared to 243.7 kg ha -1 ). Under conditions of cohesion-prone soils, the system of conventional tillage reduces the possibility of cultivation of a second harvest in the year even with inoculation or N fertilization.

show abstract

Disproportionate single-species contribution to canopy-soil nutrient flux in an Amazonian rainforest

Germer

Zimmermann

Neill

et al. 2012

Forest Ecology and Management

View full text Add to dashboard Cite

Patents on Periphery of the Amazon Rainforest

Cited by 4 publications

References 9 publications

Environmental and agricultural benefits of a management system designed for sandy loam soils of the humid tropics

Environmental and agricultural benefits of a management system designed for sandy loam soils of the humid tropics

Soil Management and Efficiency of Rhizobia Strains of Cowpea Vigna unguiculata (L.) Walp. in the Tropics

Disproportionate single-species contribution to canopy-soil nutrient flux in an Amazonian rainforest

Contact Info

Product

Resources

About