NUTRIENTS POOL IN CONSORTIA OF <i>Eucalyptus urograndis, Acacia mearnsii</i> AND <i>Zea mays</i>
<p><a href="http://dx.doi.org/10.5902/19805098105438"><span>http://dx.doi.org/10.5902/19805098105<span>43</span></span></a></p><p><a href="http://dx.doi.org/10.5902/19805098105438"><span></span></a>This...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Portuguese |
| Published: |
Universidade Federal de Santa Maria
2013-08-01
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| Series: | Ciência Florestal |
| Subjects: | |
| Online Access: | http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/article/view/10543 |
| Summary: | <p><a href="http://dx.doi.org/10.5902/19805098105438"><span>http://dx.doi.org/10.5902/19805098105<span>43</span></span></a></p><p><a href="http://dx.doi.org/10.5902/19805098105438"><span></span></a>This study aimed to determine the nutrient pool in monospecific and mixed stands of <em>Eucalyptus urograndis</em> and <em>Acacia mearnsii</em> in a consortium with <em>Zea mays</em>.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.</p> |
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| ISSN: | 0103-9954 1980-5098 |