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  • Author or Editor: Alexander A. Csizinszky x
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Abstract

Seeds of winged bean, accessions TPt-1 and ‘Chimbu’, treated in dilute H2SO4 (8:1 by volume in H2O) for 5 minutes at 62°C followed by a 5 minute rinse under running tap water gave 96-100% germination with no apparent injury to the emerging seedlings.

Open Access

Tomato, Lycopersicon esculentum Mill. `Asgrow 1035', was planted in Summer–Fall (Aug.–Dec.) 1998 in a land previously amended with compost in Fall 1997 and then cropped in sequence with three vegetables during the Fall–Winter–Spring 1997–1998. Soil was an Eau Gallie fine sand, and the production system was a full-bed polyethylene mulch with micro-(trickle) irrigation. Experimental design was a split-split plot replicated three times. Main plots were N and K fertilizer treatments for the Fall 1998 tomato crop: fertilized (FT 98) or nonfertilized (NF 98). Subplots were two N–P–K treatments for the Fall 1997 tomato crop: fertilized (FT 97) or nonfertilized (NF 97). Sub-subplots were four compost rates 0x, 1x, 2x, and 3x (where 1x = 10 t·ha–1 `Disneyworld' compost) that were applied for the Fall 1997 tomato crop. Fruit size and yields were best in the plots that received N and K in Fall 1998 (FT 98) and N–P–K in Fall 1997 (FT 97). Early yields (harvests 1 + 2) were highest with the 2x and seasonal total yields (six harvests) were highest with the 3x compost rate. Very high residual soil P and Fe concentrations were detected with increasing compost rates.

Free access

Sweet marjoram [(marjoram) Origanum majoranna], Italian parsley [(parsley) Petroselinum crispum], Summer savory [(savory) Satureja hortensis], and thyme (Thymus vulgaris) were evaluated for their yield potential during Fall–Winter–Spring (Oct.–May) 1998–99. The herbs were grown in a light sandy soil with the full-bed polyethylene mulch-micro(trickle) irrigation system. Experimental design was a split-plot replicated three times. Main plots were two N–P–K treatments: 0 N–P–K or N and K from a liquid 4–0–3.32 (N–P–K) fertilizer injected at 0.77 N and 0.64 K kg·ha–1·day–1. Sub-plots were four compost rates at 0x, 1x, 2x, and 4x (1x = 4.5 t·ha–1). Early and seasonal total yields of marjoram and savory were similar with injected N + K and 0x compost to yields with compost and with or without injected N + K fertilizer. Yields of parsley and thyme increased with increasing compost rates and were best with compost plus liquid N + K. Postharvest soil concentrations of NO3-N were lower in the parsley, than in the marjoram, savory and thyme plots. Residual concentrations of all other elements were similar with or without injected N + K or compost treatments.

Free access

Abstract

Winged bean [Psophocarpus tetragonolobus (L.) D.C.] accessions ‘Chimbu’ and ‘TPt-1’, grown with seepage irrigation on raised, plastic mulched beds, yielded 10.76 and 6.81 mt/ha green pods. ‘Chimbu’ had a higher dry seed yield and tannin concentration, 1.49 MT/ha and 1.50%, respectively, than ‘TPM,’ 1.08 mt/ha and 0.72%. Both winged bean accessions had a long harvest season for green and ripe pods and were considered suitable only for home gardens.

Open Access