Browsing Vegetable Report 1986 by Issue Date
Now showing items 1-20 of 23
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An Assessment of Simulated Cooling Tower Drift on Cantaloupe and CottonThe impact of foliar salt deposition, similar to that which is predicted to occur in the vicinity of the Palo Verde Nuclear Generating Station, was investigated on cantaloupe and cotton. Simulated salt drift was applied throughout the growing season. There was an increase in the amount of lead found in the fruit harvested from the highest treatment level as compared to the untreated plants. No other observable salt-induced responses were observed in the cantaloupe. A trend toward reduced yields was observed in the cotton plots receiving the salt treatments.
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Onion Variety Trial, Safford Agricultural CenterIn response to the request for alternative crop production information, 92 varieties of long-day onions were planted on the Safford Agricultural Center. Many varieties performed well, with the top variety yielding almost 480 cwt per acre. It appears that onions can be a viable alternative crop for some farmers in the upper Gila valley.
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Impact of Trap Design and Placement When Monitoring for the Bandadwinged Whitefly and the Sweet Potato WhiteflySeveral designs for yellow sticky traps where placed on the periphery of cotton and lettuce fields and evaluated to determine the most efficient type for capturing bandedwinged and sweetpotato whiteflies. Cylindrical traps caught more (55% of the total) than the other designs; upward-facing horizontal traps caught 26 %, vertical traps 16% and downward- facing horizontal traps 3 %. The number of both species of whiteflies captured by the various designs placed around fields was compared with the number caught on traps in lettuce field interiors. Catches from cylindrical and upward-facing horizontal traps were consistantly correlated at high levels with field populations. Traps placed at ground level caught a significantly higher number of whiteflies when compared with those placed at 50 and 100 centimeters (81% of the total versus 11% and 7% respectively). Aerial traps displayed more variation with field populations than did ground level traps.
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Effect of Treatment of Lettuce Seeds with Fusicoccin and Other Growth Regulators on Seedling Emergence at High TemperatureLettuce stand problems in desert production areas are, in many instances, related to high seedbed temperatures and the use of seed coatings. We evaluated the use of fusicoccin and other growth regulators to improve the performance of naked and coated lettuce seeds at high temperature. Treatment of both naked and coated seeds with fusicoccin markedly increased the rate and total emergence of seedlings incubated at 35 °C for 10 hours alternating with 23 °C for 14 hours.
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Cantaloupe Variety Trial, Safford Agricultural Center, 1985Cantaloupes for fresh market were studied as an alternative crop for the farmers in the Safford valley. Three varieties were tested with the top variety yielding over 1000 cwt per acre. The quality of the fruit was good, but work needs to be done to determine if there is a slot in the market for fruit from this area.
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Cucumber Variety Trial, Safford Agricultural Center, 1985Slicing cucumbers were studied as an alternative crop for farmers in the Safford valley. Four varieties were tested, with the top variety yielding more than 676 cwt per acre. More work needs to be done to determine the quality and value of the crop, but generally it appears that slicing cucumbers could be produced in the area.
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Urea Phosphate Applied by Subsurface Drip Irrigation Increases Availability of Soil Nitrogen and PhosphorusApplication of water and fertilizer through buried drip lines shows promise for vegetable production in Arizona. Use of an acidic product is necessary if phosphorus is added through the system. Urea phosphate was shown to be a satisfactory product for injecting into buried drip lines for squash and cabbage.
