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Fertilization and cover crop effects on soil nitrogen and plant nutrition in a young guarana plantation
| Content Provider | Scilit |
|---|---|
| Author | Trujillo, Lucerina Lehmann, Johannes Cravo, Manoel da Silva Atroch, André Luiz Filho, Firmino José Do Nascimento |
| Copyright Year | 2003 |
| Description | Fruit tree production is gaining an increasing importance in the central Amazon and elsewhere in the humid tropics, but very little is known about the nutrient dynamics in the soil-plant system. The present study quantified the effects of fertilization and cover cropping with a legume (Pueraria phaseoloides (Roxb.) Benth.) on soil nitrogen (N) dynamics and plant nutrition in a young guarana plantation (Paullinia cupana Kunth. (H.B. and K.) var. sorbilis (Mart.) Ducke) on a highly weathered Xanthic Ferralsol. Large subsoil nitrate (NO3-) accumulation at 0.3-3 m below the guarana plantation indicated N leaching from the topsoil. The NO3- contents to a depth of 2 m were 2.4 times greater between the trees than underneath unfertilized trees (P0.05). Even without a legume intercrop, large amounts of NO3- were found in the subsoil between unfertilized trees. Subsoil NO3- between the trees could be utilized, however, by fertilized guarana. This can be explained by a more vigorous growth of fertilized trees which had a larger nutrient demand and exploited a larger soil volume. With a legume cover crop, however, more mineral N was available at the topsoil which was leached into the subsoil and consequently accumulated at 0.3-3 m depth. Fertilizer additions of P and K were needed to increase subsoil NO3- use between trees. |
| Related Links | http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0044-59672003000400001&lng=en&nrm=iso&tlng=en |
| Ending Page | 548 |
| Page Count | 14 |
| Starting Page | 535 |
| ISSN | 00445967 |
| e-ISSN | 18094392 |
| DOI | 10.1590/s0044-59672003000400001 |
| Journal | Acta Amazonica |
| Issue Number | 4 |
| Volume Number | 33 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2003-12-01 |
| Access Restriction | Open |
| Subject Keyword | Acta Amazonica Soil Science Plant Nutrition Guarana Plantation Fertilization and Cover Crop Young Guarana Soil Nitrogen Crop Effects |
| Content Type | Text |
| Resource Type | Article |
| Subject | Agricultural and Biological Sciences |
