Leaf-miner attack in relation to nutrition and vigor of coffee-tree seedlings

Ciência Rural

Esposti, Marlon Dutra Degli⁴  Cecon, Paulo Roberto⁴  Amaral, José Francisco Teixeira do³  Picanço, Marcelo Coutinho⁴  Caixeta, Sérgio Luiz²  Martinez, Herminia Emilia Prieto¹ 

[1] Universidade Federal de Viçosa, Viçosa;Instituto Brasileiro de Geografia e Estatística, Porto Velho;Universidade Federal do Espírito Santo, Alegre;Universidade Federal de Viçosa

关键词: Coffea arabica;    nitrogen;    potassium;    interaction insect-plant;   

DOI  :  10.1590/S0103-84782004000500016

学科分类：农业科学（综合）

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

【 摘 要 】

The effects of N and K availabilities on both growth of coffee plant seedlings and attack by the leaf-miner (Leucoptera coffeella-Guérin-Ménèville) to these coffee plants were evaluated. The experiment was carried out in nutritive solution under greenhouse conditions. Treatments consisted of a complete factorial scheme composed by 4 doses of nitrogen and 4 of potassium on a entirely randomized design with three replicates and two plants per plot.The plants were infested with the leaf miner when they were 6 months old. Two months latv. 1,v. 1,er they were evaluated.The obtained data were submited to variance, regression and correlation analysis. Protein content presented positive correlation with the attack of the coffee leaf-miner, while the contents of lignin, starch and total soluble sugars showed a negative correlation. The stronger attack of the leaf-miner occurred in the most vigorous coffee seedlings which were provided with an adequate nitrogen nutrition.

【 授权许可】

CC BY-NC