Alface e jateikaá em cultivo solteiro e consorciado: produção e atividade antioxidante

Abstract

RESUMOConduziu-se este estudo, com o objetivo de avaliar o crescimento e a produção de alface (Lactuca sativa L.) e jateikaá (Achyrocline alata (Kunth) DC.) em cultivo solteiro e em consórcio. Os tratamentos em estudo foram três e quatro fileiras de alface por canteiro, duas fileiras de jateikaá espaçadas de 35 cm e 50 cm, quatro fileiras de alface alternadas com duas fileiras de jateikaá (A 25 J 50 ) e três fileiras de alface alternadas com duas fileiras de jateikaá (A 35 J 35 ). Foi utilizado o delineamento blocos casualizados, com quatro repetições. Foram avaliadas as massas frescas e secas, diâmetro e altura das cabeças de alface, massas frescas e secas das inflorescências e das partes aéreas sem inflorescências de jateikaá. Realizou-se o teste antioxidante para amostras de inflorescências de jateikaá nos tratamentos estudados. O tipo de cultivo e os espaçamentos entre fileiras não influenciaram significativamente as características avaliadas para alface e para o jateikaá, com exceção das massas fresca e seca de inflorescências, cuja produção foi superior no espaçamento de 50 cm. A altura média obtida para as plantas de jateikaá foi de 1,12 m. A razão de área equivalente para o consórcio A 25 J 50 foi de 1,87 e para o A 35 J 35 foi de 2,10. No caso de recomendação agronômica, optar-se-ía pelo consórcio A 35 J 35 . Observou-se atividade antioxidante em todas as amostras analisadas, sendo que o padrão de inibição apresentou semelhança tanto para cultivo solteiro quanto para o consorciado, demonstrando que os constituintes químicos do jateikaá apresentaram um alto potencial antioxidante. Termos para indexação:Lactuca sativa, alface, Achyrocline alata, jateikaá, rendimento, sistemas de cultivo. ABSTRACTThis study aimed to evaluate the production of lettuce (Lactuca sativa L.) e jateikaá (Achyrocline alata (Kunth) DC.) as a single culture and intercropped. The treatments in study were three and four rows of lettuce and two rows of jateikaá spaced 35 cm or 50 cm, four rows of lettuce alternated with two rows of jateikaá (A 25 J 50 ) and three alternated rows of lettuce with two rows of jateikaá (A 35 J 35 ). The experiment design was randomized blocks, with four replications. Fresh and dry masses, diameter and height of the lettuce heads and height, fresh and dry masses of inflorescence and aerial parts without inflorescence of jateikaá were evaluated. The antioxidant activity of jateikaá's inflorescence was studied. The culture type and spacing between rows did not influence the characteristics evaluated for lettuce and for jateikaá, with exception of the fresh and dry masses of inflorescences, with production was superior in the 50 cm spacing of plants with height average of 1.12 m for the jateikaá plants. The land equivalent ratio, for intercropping A 25 J 50 was 1.88 and for the A 35 J 35 was 2.05. Intercropping A 35 J 35 might be recommended. Antioxidant activity was observed in all samples. The inhibition standard was similar for both single culture and intercropping, demonstrating that the chemical constitu...

Agronomic Preliminary Performance of Two Radish Cultivars Intercropped With Coriander

“…From the success obtained with intercropping, irrespective of the radish cultivar associated with the coriander, one inference is the possible promotion of greater ecological balance, since this cropping system aims to maximise the use of environmental resources in the area and reduce the incidence of pests, diseases and weeds, avoiding the use of fertilisers and pesticides (Mota et al, 2010). Another important point, according to researchers and also seen in this study, is the efficiency of the intercrop, which depends directly on the system and the crops involved, since a so-called complementarity occurred between the intercropped species, showing it to be a more advantageous practice than the monocrop of each of the species under evaluation (Cecílio and Taveira, 2001).…”

Lettuce and Lemon Balm Intercropping: Crops Productivity, Yield and Phytochemical Quality of Lemon Balm’s Essential Oil / Consórcio Entre Alface E Melissa: Produtividade Das Culturas, Teor E Qualidade Fitoquímica Do Óleo Essencial De Melissa

“…Intercropping between vegetables and medicinal plants can promote beneficial interactions between the crops, resulting in food supply diversification to different markets and ensure a safer and more continuous source of income for farmers. It is an applicable and accessible technology with advantages such as synergistic or compensatory effect of one crop on another and less environmental impact compared to monocropping (MOTA et al 2010).…”