Growth and physiology of two sunflower cultivars fertilized with sugarcane bagasse ash



Título del documento: Growth and physiology of two sunflower cultivars fertilized with sugarcane bagasse ash
Revista: Acta scientiarum. Agronomy
Base de datos: PERIÓDICA
Número de sistema: 000459660
ISSN: 1679-9275
Autores: 1
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Instituciones: 1Universidade Federal do Agreste de Pernambuco, Garanhuns, Pernambuco. Brasil
Año:
Volumen: 44
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, analítico
Resumen en inglés One way to reduce mineral fertilizers is to use alternative fertilizers instead, such as the byproducts from the food industry. In the present study we evaluated the effects of sugarcane bagasse ash on the physiology, growth, and development of sunflowers (Helianthus annuus L.). We conducted an experiment in a greenhouse using a completely randomized design with two sunflower cultivars (Multissol and Catissol), five sugarcane bagasse ash doses (0.0, 3.125, 4.687, 6.25, and 7.812 mg ha-1), and 5 replicates. At 85 days after planting we determined the plant height; leaf number; stem diameter; internal and external diameter of the flower chapter; leaf area index; shoot dry weight; net assimilation rate; dry mass production rate; relative and absolute growth rate; extravasation of electrolytes; relative water content; photosynthetic pigments (chlorophyll a, b, carotenoids, and the chlorophyll a/b ratio); and soluble carbohydrates, proteins, and proline. The height, number of leaves, and shoot dry mass increased due to the availability of nutrients contained in the ash. The incorporation of ash into the soil increased the photosynthetic activity (chlorophyll a and b) of both sunflower cultivars. The diameter of the stem, leaf area index, and relative growth rate of both sunflower cultivars increased with increasing ash dose. Therefore, the ash can be used as an alternative fertilizer, complementing or replacing mineral fertilizers
Disciplinas: Agrociencias,
Biología
Palabras clave: Plantas ornamentales,
Fisiología vegetal,
Fertilización,
Girasol,
Helianthus annuus,
Bagazo de caña
Keyword: Ornamental plants,
Plant physiology,
Fertilization,
Sunflower,
Helianthus annuus,
Sugarcane bagasse
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