5 documents found, page 1 of 1
Effect of Amazonian dark earth fertility on nutritional status and fruit produc...
Falcão, Newton P.S.; Borges, Lillian FrançaThe effect of Amazonian dark earth fertility on the nutritional status and fruit production of a Carica papaya plantation was evaluated in Açutuba Coast, Iranduba Municipality, Amazonas, Brazil, between August and Octuber 2003, when the plantation was eight months old and just starting production. A completely randomized experimental design, with four treatments and nine replications, was used; each replication...
Use of Raman spectroscopy and FT-IR to characterize the biochar in yellow oxiso...
Padilha, Felipe J.; Silva, Marcondes S.; Guimarães, Rodrigo de S.; Cedano, Johnny C.C.; Oliveira, Danielle M.; Damaceno, João B.D.The Amazonian Latosols are acidic soils shows low activity in clay minerals. However, it is also found anthropogenic soils known as Amazonian Dark Earth (EAD) that provides a potential to develop a sustainable system in agriculture. The majority of TPI soils show fragments of black carbon stemming from an anthropic activity. The presence of these fragments endows the improvements in the physic and chemical char...
Effect of rosewood plantation chronosequence on soil attributes in Central Amaz...
Krainovic, Pedro Medrado; Bastos, Rodrigo Pinheiro; Almeida, Danilo Roberti Alves de; Neves Junior, Afrânio Ferreira; Sampaio, Paulo de Tarso BarbosaRosewood (Aniba rosaeodora Ducke) is an endangered Amazonian tree species that produces a commercially valuable essential oil, used mainly in cosmetics and fine fragrances production. The species can also be used in reforestation programs, which generate jobs and as a source of income and reduce the pressure of exploitation on natural rosewood populations. The objective of this study was to verify the influence...
Residual effect of biochar and saw dust powder on carbon and total nitrogen con...
Guimarães, Rodrigo de S.; Padilha, Felipe J.; Cedano, Johnny C.C.; Damaceno, João B.D.; Gama, Romildo T.; Oliveira, Danielle M. deThe biochar (BC) acts as a physical, chemical and biological conditioner, which added to increasing doses of saw dust powder (PS) can contribute to soil improvement. The objective of this work was to verify the residual effect of BC and PS on total carbon, organic carbon, total nitrogen and carbon and nitrogen in a dystrophic yellow latosol in the central Amazon. The experiment was carried out at the experiment...
Evaluation of the impact of citrus cultivation on carbon and nitrogen stocks of...
Chagas, Lillian França Borges; Falcão, Newton P.S.; Padilha, Felipe J.; Oliveira, Danielle M.; Guimarães, Rodrigo de S.; Campos, David Vilas Boas deThe Amazonian Dark Earth (ADE), that is extremely efficient soils in retaining great amount of organic matter of the soil, and for long time, they are still little known with relationship to the effects on the physical fractions of those soils in these adapt tropical region. Therefore, the objective of the present study was to evaluate the space distributions and in depth of the light organic fractions and the ...