Supplementry effect of biofertilizers in dendrobium
| dc.contributor.advisor | Jyothi Bhasker | |
| dc.contributor.author | Binisha, S | |
| dc.contributor.author | KAU | |
| dc.date.accessioned | 2019-05-29T10:30:44Z | |
| dc.date.available | 2019-05-29T10:30:44Z | |
| dc.date.issued | 2003 | |
| dc.description | PG | en_US |
| dc.description.abstract | Studies on "Supplementary effect of biofertilizers in Dendrobium" were carried out in the orchidarium of All India Co-ordinated Floriculture Improvement Project, Department of Pomology and Floriculture, College of Horticulture, Vellanikkara during the period from July 2002 to August 2003. The study was conducted using Dendrobium var. Sonia 17, with the main objective of determinjng the effect of biofertilizers on growth and flowering of Dendrobium in combination with inorganic fertilizers. Results revealed that, different treatments involving combinations of biofertilizers and inorganic fertilizers highly influenced the growth characters of the plant. The plant height obtained was the highest for NPK 10:5:10 along with Azospirillum. This treatment also improved vegetative characters like number of leaves per plant, number of leafy shoots, girth of shoot and internodal length. Maximum number of pseudobulbs was obtained for the treatment receiving NPK 10:5: 1 0 inoculated with Azospirillum and phosphobacteria at the time of planting. Root characters and dry matter production were markedly influenced by biofertilizer treatments. Root length and root number were found to be the highest for the treatment receiving 20: 1 0: 1 0 NPK along with Azospirillum, phosphobacteria and Arbuscular Mycorrhizal Fungi. These three biofertilizers along with 10:5: 10 NPK yielded the highest root volume. Dry matter production at the time of flowering was markedly influenced by biofertilizer application. Treatment receiving 20: 1 0: 1 0 NPK along with Azospirillum and phosphobacteria recorded the highest value for dry matter production. Plants. which were inoculated with Azospirillum at the time of planting and sprayed with 20: 1 0: 1 0 NPK at 0.2 per cent concentration, came to flowering early, produced larger flowers, lengthy spikes and more number of flowers per spike. Number of spikes per plant, colour variation, spike internodal length, pedicel length and longevity of spike on the plant were not found to be influenced by biofertilizer application. Significant incidence of pests and diseases were not noticed during the period under study. Nutrient content in the plant was found to be influenced by the biofertilizers applied. The plants inoculated with, both the biofertilizers, Azospirillum and phosphobacteria and sprayed with 20:10:10 NPK at 0.2 per cent concentration recorded higher values for the nutrients analysed. The microbial population estimated at the post-experimental stage recorded ,- the presence of Azospirillum and phosphobacteria even after 12 MAP in soil less media but AMF spores were found to be absent. From this trial conducted, an indication is obtained that, Azospirillum and phosphobacteria can survive in a soil less media and these biofertilizers in combination with inorganic nutrients can improve both vegetative and flowering characters in orchid. This piece of information can be very well utilized for carrying out further studies in this line, so that an economically feasible and eco-friendly nutrient formulation can be developed for the. benefit of the orchid growers. | en_US |
| dc.identifier.citation | 172131 | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810105527 | |
| dc.keywords | Pomology and floriculture, dendrobium | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Department Of Pomology And Floriculture, College Of Horticulture, Vellanikkara | en_US |
| dc.sub | Horticulture | en_US |
| dc.subject | null | en_US |
| dc.theme | Biofertilizers in dendrobium | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Supplementry effect of biofertilizers in dendrobium | en_US |
| dc.type | Thesis | en_US |