GUPTA, Y.C.SALAM, PRIYADARSHNI2016-11-102016-11-102016http://krishikosh.egranth.ac.in/handle/1/84830ABSTRACT The present investigations entitled, “Effect of planting density and foliar application of nitrogen on multiplication of gladiolus (Gladiolus hybrida L.) through cormels” was carried out at the experimental farm of Department of Floriculture and Landscape Architecture, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P) during the year 2014 and 2015. The experiment was laid out in a Split Plot Design with three planting density i.e. 100, 120 and 140 cormels/m2 and number of foliar spray of nitrogen (500 ppm) viz., 0, 15, 9 and 6, altogether 12 treatment combinations of planting density and foliar spray of nitrogen replicated thrice. Among different planting density, the lowest density i.e. 100 cormels/m2 recorded maximum values for plant height (35.97 cm), number of leaves per plant (5.25), leaf length (31.93 cm), leaf width (1.54 cm), number of cormels/plant (6.35), weight of cormels/plant (1.25 g), cormel size (0.89 cm), weight of corms/plant (27.29 g), corm size (3.56 cm), propagation index (4001.81), NPK content of leaves (2.43, 0.24, 2.37%), available NPK content of soil (222.60, 35.94, 225.53 kg/ha), total chlorophyll content of leaves (1.43 mg/g). However, number of cormels/m2 (439.93), weight of cormels/m2 (91.66 g), number of corms/m2 (70.33), weight of corms/m2 (1399.34 g), minimum crop duration (205.55 days) was recorded with the highest density of 140 cormels/m2. As regards the effect of foliar spray of nitrogen, plant height (36.57 cm), number of leaves per plant (5.41), leaf length (32.46 cm), leaf width (1.59 cm), number of cormels/plant (7.51), number of cormels/m2 (573.90), weight of cormels/plant (1.51 g), weight of cormels/m2 (117.74 g), cormel size (0.92 cm), number of corms/m2 (70.83), weight of corms/plant (28.41 g), weight of corms/m2 (1569.77 g), corm size (3.87 cm), propagation index (4395.13), NK content of leaves (2.52, 2.42%), available NPK content of soil (229.47, 37.10, 234.27 kg/ha), total chlorophyll content of leaves (1.48 mg/g) were recorded with the highest number of foliar spray of nitrogen i.e. 16 numbers of foliar spray of nitrogen (500 ppm). However, minimum crop duration (199.56 days) was recorded in control where no foliar spray of N has been given. Hence, it is concluded that the lowest planting density in combination with the highest number of foliar spray of nitrogen gave best results for the desirable growth, corms and cormels parameters of the gladiolus cv. Solan Mangla.engenes, root nodulation, rhizobium, dna, vicia faba, planting, enzymes, genetic polymorphism, pcr, beansgladiolus (Gladiolus hybrida L.),planting density and foliar applicationThesis