Competitive capacity of Hymenaea courbaril with green manure, forage species and weeds

Submitted by repositorio ufvjm (repositorio@ufvjm.edu.br) on 2017-01-05T14:43:27Z No. of bitstreams: 2 S0100-83582011000500005.pdf: 651118 bytes, checksum: af4d674b12adc1f9e6a1487f64881b09 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5)Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-03-06T13:42:06Z (GMT) No. of bitstreams: 1 S0100-83582011000500005.pdf: 651118 bytes, checksum: af4d674b12adc1f9e6a1487f64881b09 (MD5)Made available in DSpace on 2017-03-06T13:42:06Z (GMT). No. of bitstreams: 1 S0100-83582011000500005.pdf: 651118 bytes, checksum: af4d674b12adc1f9e6a1487f64881b09 (MD5) Previous issue date: 2011Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG)Empresa de Pesquisa Agropecu?ria de Minas Gerais (EPAMIG)Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq)Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)O estudo do cons?rcio entre esp?cies anuais e perenes representa uma ferramenta importante no processo de implanta??o e manejo florestal. O objetivo deste trabalho foi avaliar a capacidade competitiva do jatob? (Hymenaea courbaril) com esp?cies de adubos verdes, forrageiras e plantas daninhas quanto ? aloca??o de mat?ria seca, ?rea foliar e concentra??o de nutrientes. Foram conduzidos dois experimentos, sendo os tratamentos compostos pela combina??o de mudas de jatob?, desenvolvendo-se isoladamente ou em competi??o com cada uma das seguintes esp?cies: Brachiaria humidicola, Brachiaria brizantha, Brachiaria decumbens, Panicum maximum, Cajanus cajan, Canavalia ensiformis e Mucuna aterrima (experimento 1) e Bidens pilosa, Cenchrus echinatus, Euphorbia heterophylla, Lolium multiflorum e Solanum americanum (experimento 2), mais o cultivo de cada planta daninha e consorte isolada. Ap?s conviv?ncia por 60 dias, as plantas foram coletadas para avalia??o de mat?ria seca, ?rea foliar e teor de nutrientes. Observou-se que a competi??o entre as plantas n?o promoveu altera??es na produ??o de mat?ria seca ou ?rea foliar do jatob?. Tendo em vista o exposto, verifica-se que a capacidade competitiva do jatob? n?o ? afetada pela presen?a das esp?cies de adubos verdes e forrageiras, possibilitando conviv?ncia em fase inicial de desenvolvimento. Quanto ? conviv?ncia das plantas daninhas com o jatob?, observou-se efeito positivo no ac?mulo de nutrientes por estas.The study of intercropping between annual and perennial plants is an important tool in the process of forest implantation and management. The objective of this study was to assess the competitive capacity of jatoba (Hymeneae courbaril) against green manure, forage and weed species, regarding the allocation of dry matter, leaf area and nutritional content. Two experiments were installed and the treatments consisted of combinations of jatoba seedlings per plot, alone or under competition with each one of the following plant species: Brachiaria humidicola, Brachiaria brizantha, Brachiaria decumbens, Panicum maximum, Cajanus cajan, Canavalia ensiformis and Mucuna aterrima (experiment 1) and Bidens pilosa, Cenchrus echinatus, Euphorbia heterophylla, Lolium multiflorum and Solanum americanum (experiment 2), plus the cultivation of each weed or counterpart alone. After 60 days of intercropping, the plants were collected to assess dry matter, leaf area and nutrient accumulation. Competition between the plant species did not promote any changes in jatoba dry matter production and leaf area of jatoba. Thus, the competitive capacity of jatoba is not affected by the green manure and forage species, at its early phases of development. A positive effect on nutrient accumulation by the weeds was observed when they were grown in the presence of jatoba