Martins, B.H. Araujo-Junior, C.F. Miyazawa, M. Vieira, K.M. <br/><br/>
Humic substances and its distribution in coffee crop under cover crops and weed control methods 

<br/><br/><label>Subjects--Topical Terms: </label><br/>CAFEICULTURA<br/>ERVA DANINHA<br/>MATERIA ORGANICA<br/>HUMUS<br/>COBERTURA DO SOLO<br/>ANALISE