604 Yield Response of Microirrigated Herbs to Compost Amendment and N and K Fertilizers on Sand

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  • 1 University of Florida, IFAS, Gulf Coast Research and Education Center, Bradenton, FL 34203

Italian parsley (parsley) Petroselinum crispum, summer savory (savory) Satureja hortensis, sweet marjoram (marjoram) Origanum majoranna, and thyme Thymus vulgaris, were evaluated for their yield potential in multiple harvest during the fall–winter–spring (Dec.–May 1997–98). The herbs were grown with the full-bed polyethylene mulch-micro (trickle) irrigation system. Experimental design was a split-plot arranged in three randomized complete blocks. Main plots were two N–P–K treatments: 0 N–P–K or N and K from a liquid 4N–0P–3.32K fertilizer injected at 0.77 N and 0.64 K kg/ha per day. In the subplots, compost was applied in a 4 to 8 inches wide band on the pre-bed at 0x, 1x, 2x, and 4x rates (1x = 4.5 t·ha–1). Parsley and marjoram yields in the first three harvests and thyme yields in the first two harvests were similar with 0x compost and N + K injected fertilizers to yields with 3x and 4x compost rates with no injected N + K fertilizers. For the season, yields were higher with injected N + K fertilizers with or without compost, than in the compost treated plots with no N + K fertilizers.

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