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| Schwendener,Carol Melanie; Lehmann,Johannes; Rondon,Marco; Wandelli,Elisa; Fernandes,Erick. |
| Long term applications of leguminous green mulch could increase mineralizable nitrogen (N) beneath cupuaçu trees produced on the infertile acidic Ultisols and Oxisols of the Amazon Basin. However, low quality standing cupuaçu litter could interfere with green mulch N release and soil N mineralization. This study compared mineral N, total N, and microbial biomass N beneath cupuaçu trees grown in two different agroforestry systems, north of Manaus, Brazil, following seven years of different green mulch application rates. To test for net interactions between green mulch and cupuaçu litter, dried gliricidia and inga leaves were mixed with senescent cupuaçu leaves, surface applied to an Oxisol soil, and incubated in a greenhouse for 162 days. Leaf... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Theobroma grandiflorum; Gliricidia sepium; Agroforestry; Mineral N; Green mulch. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672007000300001 |
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| Brunetto,Gustavo; Oliveira,Bruno Salvador; Ambrosini,Vítor Gabriel; Couto,Rafael da Rosa; Sete,Paula Beatriz; Santos Junior,Elano dos; Loss,Arcângelo; Silva,Lincon Oliveira Stefanello da; Gatiboni,Luciano Colpo. |
| ABSTRACT: Weed management in apple orchards (Malus domestica) can affect the leaching of nitrogen (N) in soil. The study aimed to evaluate the potential leaching of N forms in soil of an apple orchard with different weed management treatments. The experiment was conducted in an apple orchard implanted in 2008. In October 2011, 80 plants were selected and the following treatments were implemented: no weed management (NM), desiccation of weeds on the tree row with herbicide use (DR) and mechanical mowing of weeds on the tree row (MR). Yield was evaluated in the 2011/2012, 2012/2013 and 2013/2014 crop seasons. In May 2012 porous cup lysimeters were installed in the NM, DR and MR treatments. In the solution collected at 0.20m, NH4 +-N and NO3 --N were analyzed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mineral N; Nitrate; Ammonia; Malus domestica. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000500251 |
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