Grain yield, oil content and nutrient content in leaf of sunflower with different dosis of N, P and K fertilization
Year: 2016
Type: article
Abstract: The objective of this work was to evaluate grain yield, oil content and nutrient content in leaf of sunflower plants with different dosis of N, P and K fertilization, with focus on biofuel production. A field experiment was conducted in an Ultisol on DDPA/SEAPI Research Center in Viamão, RS, Brazil. Treatments were three combined N, P and K dosis, based on recommended dosis to state of Rio Grande do Sul, using factors: level 0 (without the nutrient), level 1 (recommended dose) and level 2 (two times recommended dose). Six combinations of these dosis were tested: N0P0K0 (without fertilization), N1P1K1, N2P2K2, N2P1K1, N1P2K1 and N1P1K2. There was positive response of grain yield to fertilization, because all combinations of N, P and K dosis tested had higher yield than treatment without fertilization, with highest yield obtained whith recommended fertilization (N1P1K1), double of recommended fertilization (N2P2K2) and double of N dose (N2P1K1). Oil content in grains did not differ among the treatments, but treatments with fertilization had higher oil yield per hectare than treatment without fertilization, which was related to higher grain yield. Only with N there was increase of nutrient leaf content with fertilization, which occurred with the two applied dosis and was correlated with grain yield, indicating a potential of response to higher dosis than currently recommended.
Source: Pesquisa Agropecuária Gaúcha
Authors: André Dabdab Abichequer, Bruno Brito Lisboa, Luciano Kayser Vargas, Carlos Antonio Saraiva Osorio, Cláudio Portela De Carvalho, Evelyn Penedo Dorneles, Rodrigo Oliveira De Almeida, Helen Marocco De Oliveira
Institution: Embrapa
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W4409142644