Open AccessTotal chlorophyll and nutrients content in bean plants and weeds in competition
Author(s) -
Victor Hugo Vidal Ribeiro,
Marcos Antônio da Silveira Júnior,
Gustavo Antônio Mendes Pereira,
Evander Alves Ferreira,
Enílson de Barros Silva,
J.B. Santos
Publication year - 2018
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.v8i2.2173
Subject(s) - bidens pilosa , agronomy , weed , micronutrient , biology , nutrient , competition (biology) , crop , chlorophyll , horticulture , chemistry , ecology , organic chemistry
Plants compete for several resources on soil, including water, light and nutrients which can affect crop yield and also weeds growth. Under the hypothesis that in different densities and weed communities, crops and weeds undergo changes in their nutritional contents of macro and micronutrients, the aim of this study was to quantify the nutritional contents of bean plants and weeds cultivated in increasing densities (0, 74, 147, 221 and 295 plants m-2) and the effect of the association of plants (isolated bean, bean + Urochloa plantaginea, bean + Bidens pilosa and bean + Urochloa plantaginea + Bidens pilosa). The contents of macro and micronutrients were evaluated. The increase in plant density promoted a decrease in the total chlorophyll content of bean plants and weeds, as well as a decrease in macronutrients (K and P) and micronutrients (Zn, Fe, Mn and Cu). In the arrangement where the greatest number of species were cultivated simultaneously and in increasing densities, a greater reduction in total chlorophyll content and in macro and micronutrient contents of the three species (crops and weeds) were observed.