Effect of different concentrations of commercial seaweed liquid extract of Ascophyllum nodosum as a plant biostimulant on growth, yield and biochemical constituents of onion (Allium cepa L.)
Resumo
Extratos de algas marinhas são fontes baratas de reguladores de crescimento de plantas naturais que têm maior potencial como bioestimulantes na agricultura. Acredita-se que os reguladores de crescimento endógenos de plantas presentes nos extratos e concentrados de algas marinhas estejam envolvidos na promoção do crescimento e rendimento das plantas. O presente estudo examinou o efeito de extratos líquidos de algas marinhas de Ascophyllum nodosum como bioestimulante vegetal no crescimento e produção de cebola. Seis tratamentos são alocados aleatoriamente com quatro repetições usando RBD viz. T0- Controle(0,00%), T1- (0,35%), T2- (0,45%), T3- (0,55%), T4- (0,65%) e T5- (0,75%). Com base na presente investigação, pode-se concluir que o tratamento recebendo 0,55% foi considerado o melhor tratamento em termos de número de folhas (9,08/planta), altura da planta (55,20cm/planta), taxa de crescimento da cultura (33,65g/planta). m2/dia), diâmetro do bulbo fresco (5,13cm/planta), peso fresco do bulbo (120,21g/planta), índice de colheita (77,44%), clorofila ‘a’ (0,81mg/g), clorofila ‘b’ (0,58mg /g), teor de carotenoides (0,61mg/g), teor de enxofre do bulbo (1,80ppm), teor de proteína do bulbo (1,19mg/g) e teor de proteína da folha (0,46mg/g). tendência. Nosso estudo fornece informações importantes sobre a otimização de extratos líquidos de algas marinhas na cultura da cebola.
Abstract
Seaweed extracts are inexpensive source of naturally occurring plant growth regulators which have greater potential as biostimulants in agriculture. The endogenous plant growth regulators present in the seaweed extracts and concentrates are thought to be involved in the promoting plant growth and yield. Present study examined the effect of seaweed liquid extracts of Ascophyllum nodosum as a plant biostimulant on growth and yield of onion. Six treatments are allocated randomly with four replications using RBD viz. T0- Control(0.00%), T1- (0.35%), T2- (0.45%), T3- (0.55%), T4- (0.65%) and T5- (0.75%). On the basis of present investigation, it may be concluded that treatment recieving 0.55% was found to be the best treatment in terms of leaf number (9.08/plant), plant height (55.20cm/plant),Crop growth rate (33.65g/m2/day), fresh bulb diameter (5.13cm/plant),bulb fresh weight (120.21g/plant), harvest index (77.44%), chlorophyll ‘a’ (0.81mg/g), chlorophyll ‘b’ (0.58mg/g), carotenoid content (0.61mg/g), bulb sulphur content (1.80ppm), bulb protein content (1.19mg/g) and leaf protein content (0.46mg/g).While the higher concentration of the extract shows decreasing trend. Our study provide important information on optimization of seaweed liquid extracts on onion crop.
