Results 51 to 60 of about 26,126 (298)
Ciência Rural, 2006 O cultivo intensivo dos solos e a utilização de máquinas e equipamentos pesados promovem a compactação do solo. A resistência do solo à penetração é uma medida que detecta esta compactação, contudo ela é fortemente influenciada pelo teor de água no solo.
Zigomar Menezes de Souza +5 more
doaj +1 more source
Soil–Atmosphere Exchange of Nitrous Oxide, Nitric Oxide, Methane, and Carbon Dioxide in Logged and Undisturbed Forest in the Tapajos National Forest, Brazil [PDF]
, 2009 Selective logging is an extensive land use in the Brazilian Amazon region. The soil–atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol ...
Asner, Gregory P. +6 more
core +2 more sources
Agroforestry and enhanced rock weathering: A dual strategy for sustainable cacao
PLANTS, PEOPLE, PLANET, EarlyView.Cacao production is both economically vital and environmentally intensive, presenting a major sustainability challenge as a crop largely cultivated by smallholder farmers in climate‐vulnerable regions. This review synthesises evidence that integrating agroforestry with enhanced rock weathering (EW) may significantly reduce emissions from cacao ...
Isabella L. Steeley +4 more
wiley +1 more source
Papaya carotenoids increased in Oxisols soils
Agriculture and Natural Resources, 2017 Abstract The papaya fruit is healthy for humans as it contains high levels of antioxidants and provitamin A due to high lycopene and β-carotenes contents, respectively. The carotenoids were determined from papayas grown in three different locations—Kamphaeng Saen (KS), Sisaket (SK), and Tha Mai (TM)—and also the study investigated whether the Oxisols
Kamonwan Sangsoy +3 more
openaire +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra +3 more
wiley +1 more source
Modelagem das mudanças nos estoques de carbono orgânico de solos distintos após quatro rotações do eucalipto no sudeste do Brasil com o modelo century [PDF]
, 2011 Soil organic matter (SOM) plays an important role in carbon (C) cycle and soil quality. Considering the complexity of factors that control SOM cycling and the long time it usually takes to observe changes in SOM stocks, modeling constitutes a very ...
BARROS, Nairam Félix de +11 more
core +3 more sources
Annals of Applied Biology, EarlyView.Morphology of the two main growth stages—germination and initial development of the forest species Ceiba speciosa (co, cotyledon; eo, eophyll; hp, hypocotyl; me, metaphyll; pk, prickles; pr, primary root; se, seed; sr, secondary root). Abstract A specific phenological scale designated for each forest species facilitates the standardization of different
Mábele de Cássia Ferreira +2 more
wiley +1 more source
Boron extraction and vertical mobility in Paraná State oxisol, Brazil. [PDF]
, 2014 The deficiency or excess of micronutrients has been determined by analyses of soil and plant tissue. In Brazil, the lack of studies that would define and standardize extraction and determination methods, as well as lack of correlation and calibration ...
BORKERT, C. M. +4 more
core +1 more source
Physicochemical characterization of oxisol subjected to succession culture
Revista Brasileira de Engenharia Agrícola e Ambiental, 2023 ABSTRACT No-till farming is the practice closest to the concept of sustainable agriculture. The minimum soil movement and continuous contribution of crop residues to the farming system reduce erosion, mitigate the greenhouse effect, increase the organic matter content, and improve the physical and chemical quality of the soil.
Adryel K. O. A. Laurindo +5 more
openaire +2 more sources
Small understory trees increase growth following sustained drought in the Amazon
New Phytologist, EarlyView.Summary Droughts pose a major threat to the Amazon rainforest, yet the mechanisms enabling trees to maintain growth under prolonged drought remain poorly understood, particularly in the understory layer. We leveraged a 22‐yr Throughfall Exclusion (TFE) in a 1‐ha plot in eastern Amazonia, paired with a Control plot, to test whether small understory ...
Mateus C. Silva +16 more
wiley +1 more source