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  • Author or Editor: G. E. Wilcox x
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Abstract

Cost budgeting methods were used to determine harvesting costs and net returns under hand, combination, and mechanized harvest operations. Mechanized harvest methods generated the highest net return potentials for growers. Gross receipts per unit area, required to break even, were significantly lower under mechanized harvest operations. Net returns per unit of area for hand harvest and combination harvest were similar.

Open Access

Abstract

Analysis of costs of tomatoes for processing indicated savings from direct seeding as compared to transplanting. Total production costs for direct seeding averaged $17.34 per acre, or 11% less than for transplanting operations, excluding potential returns from increased useable yields under direct seeding.

Open Access

Abstract

An integrated tomato seedling system was developed by assembling components to regulate plant population, apply starter fertilizer, and promote seedling emergence. Plant population was regulated by the release of 4-7 seeds per clump at the desired spacing in the row. Starter fertilizer was sprayed on the seed as a 2-3-0, N-P-K (2-7-0 oxide form) solution at 500 ml per 30 m (1 pint per 100 ft) of row. An anticrustant was applied into the seed furrow and firmed by a press wheel with a concave surface. The system was adapted to several commercial seeders and enabled the establishment of dependable stands on soils with crusting tendencies.

Open Access
Authors: and

Abstract

Field experiments were conducted to determine N-use-efficiency of muskmelon (Cucumis melo L.) grown in a loamy sand under trickle irrigation and black plastic mulch. Nitrogen rates of 0, 67, or 100 kg N/ha preplant plus 0, 50, or 100 ppm trickle applied N (fertigation) were compared. Significant increases in stem growth, soil NO3-N, petiole NO3-N, and early and total yields generally were attained with increasing preplant N fertilization rates. Muskmelon yield response to increasing N fertigation response was increased in regimes that received no preplant N. Fertigation response was reduced in regimes that received 67 or 100 kg preplant N/ha. A significant curvilinear relationship was established between soil saturation extract NO3-N and petiole NO3-N.

Open Access

Abstract

The current problems centering upon profitability in agriculture have generated increased pressure for production diversification and management efficiency (USDA, 1987). Expanding market opportunities and relatively high gross economic returns have made horticultural enterprises a primary focus of farm production diversification initiatives nationwide. However, the economic success of such diversification initiatives often has been jeopardized by failure of producers to comprehensively evaluate the integrated requirements for capital, equipment, labor, and management resources in the decisionmaking process (Sullivan et al., 1988b).

Open Access

Abstract

Traditional methods of bulk handling mechanically harvested tomatoes in pallet bins were compared with handling in bulk trailer units. Substantially greater cost reduction resulted from the bulk trailer system; costs per ton to handle and transport mechanically harvested tomatoes in pallet bins averaged $4.59 compared to $1.86 under the bulk trailer system. Additional savings were realized from utilization of the equipment in the bulk trailer system with more than 1 mechanical harvesting unit.

Open Access

Watermelon, Citrullus lanatus (Thunb.) Matsum & Nakai cv. Sugar Baby, were grown in the field as a fall crop in open-top chambers (OTC) in southwestern Indiana with either charcoal-filtered (CF) or nonfiltered (NF) air. Ozone and sulfur dioxide were continuously monitored in OTC and ambient air. There was a significant decrease in marketable yield by weight (19.9%, P = 0.05), percentage of marketable fruit by number (20.8%, P = 0.10), and total yield by weight (21.5%, P = 0.05) from plants grown in the NF air treatment compared with those grown in CF air. Ozone-induced foliar injury was significantly greater on plants grown under NF conditions. Ambient concentrations of 03 in southwestern Indiana caused foliar injury (P = 0.10) and significant yield loss to a fall crop of watermelons.

Free access

Abstract

Simulation modeling techniques were used to determine the influence of precipitation during the harvest season on the economic feasibility of harvest mechanization for tomatoes on 3 soil types. Harvest mechanization was impeded on clay loam and silt loam soils at average precipitation levels during the harvest season due to wet soils and less than potential economic returns were realized. Only sandy loam soils consistently permitted full realization of the economic benefits that accrue from harvest mechanization.

Open Access

Abstract

(2-Chloroethyl)phosphonic acid (ethephon) applied at 2.9 kg/ha to plants of tomato (Lycopersicon esculentum MilUwhen 20-30% of the fruit were ripe, did not appreciably affect pH, total acidity, exterior color of the fruit, or consistency of the processed products. Organoleptic analyses of tomato juice indicated no differences in flavor between samples from ethephon-treated and untreated fruit. Chromatographic separation of fruit carotenoids showed that treated fruit synthesized more lycopene than controls.

Open Access