Data/hora: 02/06/2024 15:34:08

Provedor de dados: | 87
País: | Brazil
Título: | Levels of nutrients and grain yield of maize intercropped with signalgrass (Brachiaria) in different arrangements of plants
Autores: | FREITAS,M.A.M.; VALADÃO SILVA,D.V.; SOUZA,M.F.; SILVA,A.A.; SARAIVA,D.T.; FREITAS,M.M.; CECON,P.R.; FERREIRA,L.R.
Data: | 2015-03-01
Ano: | 2015
Palavras-chave: | Nicosulfuron; Competition in intercropping; Cropping spacing.
Resumo: | Competition between maize and signalgrass can economically cripple the intercropping by the reduced yield of maize and dry matter content of the forage. In seeking to define plant arrangements which make this system more efficient, this research was held with the objective of assessing the effects of interference of densities of signalgrass (Urochloa Brizantha) on nutrition and on maize grain yield. Two field experiments were conducted in a randomized block design with four replications. Treatments were arranged similarly in both experiments, in a 2 x 4 factorial design, the first factor being the dose of Nicosulfuron herbicide applied (0 and 8 g ha-1) and the second factor being the forage seeding rates (0, 2, 4 and 6 kg of seeds per hectare). The interference of signalgrass reduced foliar nitrogen, potassium and phosphorus content in maize plants intercropped with the forage. Higher values of grain yield were observed with the reduction of the spacing and the application of the recommended herbicide underdose (8 g ha-1). It was concluded that, regardless of the seeding density of U. Brizantha, reducing the maize seeding inter-rows spacing, combined with the application of an underdose of Nicosulfuron, caused a positive effect by reducing the initial forage growth, resulting in less interference of Urochloa brizantha on nutrient uptake by the maize plants and grain yield of the crop.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100049
Editor: | Sociedade Brasileira da Ciência das Plantas Daninhas
Relação: | 10.1590/S0100-83582015000100006
Formato: | text/html
Fonte: | Planta Daninha  v.33 n.1 2015
Fonte: | info:eu-repo/semantics/openAccess