NUTRIENTS POOL IN CONSORTIA OF Eucalyptus urograndis, Acacia mearnsii AND Zea mays
| Autor: | Márcio Viera, Mauro Valdir Schumacher, Isabel Sandra Kleinpaul |
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| Jazyk: | portugalština |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Ciência Florestal, Vol 23, Iss 3, Pp 317-327 (2013) |
| Druh dokumentu: | article |
| ISSN: | 0103-9954 1980-5098 19805098 |
| DOI: | 10.5902/1980509810543 |
| Popis: | http://dx.doi.org/10.5902/1980509810543This study aimed to determine the nutrient pool in monospecific and mixed stands of Eucalyptus urograndis and Acacia mearnsii in a consortium with Zea mays.The amount determination of nutrients of forest species was carried out in the treatments: 100E (100% of eucalyptus); 100A (100% of black wattle) and 50E:50A (50% of eucalyptus + 50% of black-wattle). On the other hand, for corn, it was carried out in all treatments (100E; 100A, 50E:50A; 75E:25A – 75% of eucalyptus + 25% black-wattle and 25E:75A – 25% of eucalyptus + 75% of black wattle). The delimitation adopted was the one of a randomized block with three replications. The magnitude of the nutrient pool in the agrossilvicultural systems biomass was: N> K > Ca > Mg > P > S, for macronutrients, and Mn > Fe > Zn > B > Cu, for micronutrients. Due to the great export of nutrients through the corn harvest, residues should be kept and it is necessary to make a nutritional reposition, mainly with P, N, K, S and Zn in the following crops, because of the higher amount that are exported with the extraction of the corn tang, which reaches 75.3; 60.6; 59.9; 55.8 e 53.8%, respectively, in relation to the total stocked in the biomass. |
| Databáze: | Directory of Open Access Journals |
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