Open AccessCrescimento vegetativo e teores de nutrientes em mudas de oliveira em competição com plantas daninhas
Author(s) -
Larissa Madureira Martins,
Maria do Céu Monteiro da Cruz,
Adelson Francisco de Oliveira,
J.B. Santos,
Miriã Cristina Pereira Fagundes
Publication year - 2015
Publication title -
comunicata scientiae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.238
H-Index - 12
eISSN - 2177-5133
pISSN - 2176-9079
DOI - 10.14295/cs.v6i4.849
Subject(s) - biology , weed , competition (biology) , bidens pilosa , agronomy , cultivar , dry weight , vegetative reproduction , brachiaria , horticulture , forage , ecology
Olive tree has improved yield and production area in Brazil. However, little is known about the weeds impact on olive tree growth and nutrition. The study was carried out to evaluate the vegetative growth and nutrient contents in olive tree seedlings in competition with different weed species. The 2x5 factorial scheme was used, being the factors a combination of two olive cultivars (‘Arbequina’ and ‘Ascolano’) and four competing plant species, Brachiaria brizantha, Amaranthus retroflexus, Bidens pilosa, Cenchrus echinatus and one control treatment (without competition), distributed in a completely randomized design with four replications and the evaluations were carried out at 45 and 90 days after weed emergence. For each specie, the density of one competing plant per pot was established and the thinning was done immediately after weed emergence. The period of coexistence between olive cultivars and competing plants was 90 days after weed emergence. Weed competiton affectedolive seedlings growth, dry mass and nutrient accumulation.. ‘Ascolano’ was more tolerant to weed competition and A. retroflexus and B. pilosa were the species with the greater potential to competition with olive seedlings.