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Subject: Floriculture and Landscaping × Author: Sharma, Sukhdeep Kumar × End date: 2023 × Start date: 2023 ×
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    Evaluation of green waste compost as a growing media for flowering annuals
    (Punjab Agricultural University, 2023) Sharma, Sukhdeep Kumar; Dubey, R.K.
    The present investigations entitled “Evaluation of green waste compost as a growing media for flowering annuals” were undertaken at Landscape Nursery, Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana, during October - 2020. Four flowering annuals (Dianthus chinensis, Calendula officinalis and Bellis perennis and Tagetes patula) were transplanted in polybags of size 7 x 5 and 12 x 10 inches, filled with green waste compost (GWC) and soil in different proportions i.e. . GWC 100%, GWC 75% + Soil 25%, GWC 50% + Soil 50%, GWC 25% + Soil 75% , FYM 50% + Soil 50% (Check) and Soil 100% (Control) during October 2020. Maximum plant height (43.89 cm), were observed in Dianthus chinensis, maximum plant spread (36.64 cm) were observed in Calendula officinalis, maximum number of primary branches per plant (24.20) were observed in Calendula officinalis, higher number of flower per plant (30.35) were observed in Calendula officinalis and maximum flower size (5.81 cm) were observed in Calendula officinalis in T3 (GWC 50% + Soil 50%). Maximum Shelf life (12.71 days) were observed in Dianthus chinensis and Duration of flowering (96.03 days) were observed in Calendula officinalis in T3 (GWC 50% + Soil 50%).Plants growing in media (GWC 100%) were somewhat stunted and chlorotic for several weeks after transplanting probably due to higher levels of EC (2.82 dS/m) and pH (7.53). The growing media composition was observed to be an ideal in T3 (GWC 50% + Soil 50%) i.e. pH (7.20), EC (0.43 dS/m), OC (1.26%), percent available nitrogen (0.27%), percent available phosphorus (0.22%), percent available K (0.20%), total porosity (40.83%) and water holding capacity (75.80%) for nursery raising of flowering annuals. On the basis of growth performance evaluated, the sequence for growth parameters is Calendula officinalis>Dianthus chinensis> Tagetes patula and Bellis perennis . GWC 50% + Soil 50% proved superior growing medium for growth of four flowering annuals than other media.