Response of sancerre gladiolus to different levels of nitrogen and phosphorus application under south Gujarat condition

An experiment was conducted in the field to study the response of gladiolus ‘Sancerre’ to different levels of nitrogen and phosphorus application with respect to growth and yield parameters at Floriculture Research Farm, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari for three years (2014–15, 2015–16 and 2016–17). The experiment was laid out in Factorial Randomized Block Design (RBD) which included nine treatment combinations consisting of two factors, viz., three levels of nitrogen (200, 250 and 300 kg/ha) and three levels of phosphorus (50, 100 and 150 kg/ha). All treatments were replicated thrice and data were analyzed for each year as well pooled. Gladiolus plants fertilized with 250 kg N/ha recorded significant improvement in number of tillers/corm, plant height, number of leaves/plant, number of florets/spike, spike length, floret diameter, vase-life, number of spikes per pant and per hector, size of corm, number of corms per plant and per hector. Among all the different levels of phosphorus, treatment receiving 150 kg P₂O₅/ha was found superior for almost all the growth, quality and yield parameters. The results revealed that all the growth parameters, quality characters and yield parameters were remained unaffected due to interaction of nitrogen and phosphorus levels.