Swine Lagoon Compost: Analysis as Transplant Substrate for ‘Traviata’ Eggplant, ‘Clemson Spineless’ Okra, and ‘Moneymaker’ Tomato
2022
Noah, Abbey C. | Kraus, Helen T. | Herring, Paige L.
Composted swine (Sus domesticus) lagoon solids may provide a nutrient rich alternative to peatmoss (Sphagnum sp.) in a transplant substrate while dispersing the concentrated nutrients of this waste product in a cost effective, environmentally conscientious manner. The objective of this study was to evaluate the physical and chemical characteristics of swine lagoon solids composted with peanut (Arachis hypogaea) hulls and evaluate the utility of this substrate to support growth of vegetable transplants. Swine lagoon solids were composted in an in-vessel compost reactor with peanut hulls 15:85 v/v producing a transplant substrate, swine lagoon compost (SLC). A greenhouse study was conducted with three vegetable species: ‘Moneymaker’ tomato (Solanum lycopersicum), ‘Traviata’ eggplant (Solanum melongena), and ‘Clemson Spineless’ okra (Abelmoschus esculentus) grown in SLC, an organic potting mix (OM), and a peatmoss-based substrate (PEAT). ‘Traviata’ eggplant, ‘Clemson Spineless’ okra, and ‘Moneymaker’ tomato transplants produced in SLC substrate were significantly greater in height and dry weight than those produced in either the OM or PEAT. Based on these findings SLC can provide both the physical and chemical requirements needed for vegetable transplant production without additional amendments or fertilizers.
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