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Friday , November 16 2018
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Crookneck : Summer Squash

Crookneck : Summer Squash

Harvesting and Handling

There are six horticultural groups of Summer squash: cocozelle, crookneck, scallop, straightneck, vegetable marrow and zucchini.

Tenderness and firmness are the major quality characteristics. The surface of Summer squash should be shiny; dullness is a sign of senescence. Fruit should be firm and free of physical injury. Dark green types should be entirely green; yellowish areas are a sign of senescence. Water loss results in a dull surface and loss of firmness.

Squash are packed in a variety of containers including bushel baskets, wire-bound wooden crates and fibreboard boxes. A plastic liner should be used in all wooden containers to prevent abrasion and retard water loss. All types of Summer squash are extremely tender and are injured by the slightest scratch, bruise, or scuff. The yellow and scalloped squash show scuffing clearly because the ensuing darkening is obvious on a light background.

Summersquash

Cooling and Storage

Prompt pre-cooling after harvest reduces the rate of water loss and is essential for maximum postharvest life. Summer squash are highly perishable and not suited for storage longer than 2 weeks. For maximum shelf-life, Summer squash should be held at 5°C to 10°C with 95% RH.

Summer squash are chilling sensitive and should not be exposed to temperatures <5°C. However, variation in chilling tolerance among Summer squash types is great. Chilled Summer squash show surface pitting and decay rapidly at non-chilling temperatures, although damage may be absent during refrigeration. Chilled fruit have increased rates of water loss upon transfer to non-chilling temperature.

Controlled atmosphere considerations

Storage in low O2 atmospheres appears to be of little or no value for zucchini squash.

Storage disorders

Alternaria rot, Anthracnose, Bacterial rots, Black rot, Chilling injury, Cottony leak, Fusarium, Watery soft rot.

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