Fertilizer-prescription equations for targeted yield in radish under integrated nutrient management system
No hay miniatura disponible
Fecha
Título de la revista
ISSN de la revista
Título del volumen
Editor
Society for Promotion of Horticulture
Resumen
Descripción
Soil test crop response correlation studies under integrated plant nutrient system were carried out in Inceptisol ofWest Bengal during 2008 – 2010, with radish as a test crop following Ramamoorthy’s ‘inductive-cum-targeted yieldmodel’. Four fertilizer (NPK) and three farmyard manure (FYM) levels were randomized in three well-establishedfertility gradients, each comprising 21 plots. Soil and plant analysis data were interpreted to formulate fertilizeradjustment equations, with or without FYM, at varying yield targets. It was computed that 1.40, 0.17 and 2.8 kg N, Pand K, respectively, were required for producing 100 kg of radish. Contribution of fertilizer-source to the total NPKuptake in radish was far higher than that obtained from FYM and soil available sources. A ready-reckoner developedfrom soil-test based fertilizer adjustment equations showed that FYM application at 10 t ha-1, along with NPK fertilizer,resulted in a net saving of 15, 1.8 and 5.0kg ha-1 of N, P and K, respectively, for cultivating radish
Palabras clave
Agrociencias