Effect of tree spacing, organic manures and PGPR on flowering parameters of Dianthus barbatus L under Grewia optiva Drummond-based agroforestry system

Abstract

The investigations were carried out to study the effect of tree spacing, organic manures and PGPR on flower parameters of Dianthus barbatus L (sweet william). It was found that flower parameters like days taken to flowering, cluster size and duration of flowering were more under the agroforestry system except number of flowers per plant. Organic manures like FYM and vermicompost enhanced the flower parameters both in open condition and within agroforestry system. Alone PGPR was not much effective with regard to the flower parameters. Study also revealed that tree-based farming system can be one of the viable alternative land use systems to prevent further degradation of land due to soil erosion and obtain production on sustainable basis.