Growth dynamics of rubber tree clones in northwestern Minas Gerais, Brazil

Ciência Rural

Camargo, Flora Ferreira²  Terra, Maria Isabela da Costa³  Macedo, Renato Luiz Grisi²  Venturin, Nelson²  Dias, Bruna Anair Souto¹  Nieri, Erick Martins² 

[1] Universidade Federal do Piauí (UFPI, Bom Jesus, Brazil;Universidade Federal de Lavras (UFLA, Lavras, Brazil;Delegacia Federal do Desenvolvimento Agrário, Belo Horizonte, Brasil

关键词:  forestry;    savannah;    rubber cultivation;    introduction of forest species;   

DOI  :  10.1590/0103-8478cr20150268

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

:This study aimed to evaluate the growth of rubber tree clones ( Hevea brasiliensis(Willd.exA.Juss.) Müll. Arg.) in the Northwest region of Minas Gerais, Brazil. Randomized blocks, constituted of three treatments (rubber tree clones) and four repetitions were used, and evaluated as plots subdivided in time. Subplots represent the evaluations carried out at the ages 62, 77, 87, 99, 113 and 128 months after planting. It was evaluated survival, stem circumference and total plant height. Current annual increment and average annual increment of circumference and also the number of trees fit for rubber tapping were calculated. Results obtained indicate that clones GT 1, IAN 2880, IAC 15, RRIM 600, PB 235 and IAN 3156 have potential to establish under local edaphoclimatic conditions. Increase in plant height and stem circumference throughout the evaluation period makes it evident that the clones have different growing paces in the studied region. Clones GT 1, IAN 3087, IAN 3156 and PR 255 had larger stalk circumference at 128 months, and PR 255 was the only one fit for rubber tapping at the age of 128 months after planting.

【 授权许可】

Unknown