บทคัดย่องานวิจัย

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Postharvest storage of lettuce cultivated with organic compost.

Santos, R. H. S., Silva, F. Da, Casali, V. W. D. and Conde, A. R.

Pesquisa Agropecuaria Brasileira. 35: pp. 959–966. 2001

2001

บทคัดย่อ

Postharvest storage of lettuce cultivated with organic compost.

The effect of organic compost fertilization on the postharvest storage of 'Baba' lettuce was evaluated. The organic compost was applied at 0.0, 22.8, 45.6, 68.4 and 91.2 t/ha (dry matter based), with and without mineral fertilizer. The fresh weight loss at room conditions and the chlorophyll degradation were evaluated in a cold chamber (4 deg C) until 84 hours and 12 days after harvest, respectively. Increasing rates of organic compost reduced the postharvest fresh weight loss up to 7%. The chlorophyll content decreased during storage when plants were grown with 45.6 and 91.2 t/ha of organic compost + mineral fertilizer, reaching values of 0.3 mg/g of fresh matter. The fertilization with organic compost and mineral fertilizer altogether resulted in plants with early senescence when stored in a cold chamber. Increasing levels of organic compost resulted in plants with smaller fresh weight loss in shelf conditions.