The use of sequential sampling for the control of the results in a fruit storage experiment [pears. [Italian

From 6 groups of 10 trees of Passa Crassana pears, which had been treated in the field with Ca according to 6 different modalities, all fruits were picked. After harvest half of the fruits of each tree were treated with Ca, and half without Ca. After storage, the browning of the flesh of the fruits...

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Published inAnnali dell'Istituto Sperimentale per la Valorizzazione Tecnologica dei Prodotti Agricoli, Milano Vol. 11
Main Authors Crivelli Ferrandina C, Eccher Zerbini P
Format Journal Article
LanguageItalian
Published 1980
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Summary:From 6 groups of 10 trees of Passa Crassana pears, which had been treated in the field with Ca according to 6 different modalities, all fruits were picked. After harvest half of the fruits of each tree were treated with Ca, and half without Ca. After storage, the browning of the flesh of the fruits was controlled according to two procedures: (a) fruits from the 2 postharvest treatments of each tree were compared two by two following a sequential sampling design, stopping the control as soon as a decision regarding the superiority of one the 2 treatments was reached; (b) all fruits were examined. The fruits examined with sequential method were 4206, while total number of fruits was 6660. With sequential analysis the size of sample was thus reduced by about 37%, and results regarding the effect of pre- and postharvest treatments on the percentage of brown fruits were not significantly changed, in comparison with total sampling. ITALIANO: Da 60 piante di pere Passa Crassana, trattate in campo a gruppi di 10 con Ca secondo sei modalita diverse e stata prelevata tutta la produzione. I frutti di ogni pianta, dopo la raccolta, sono stati trattati per una parte con Ca e per l'altra senza Ca. Dopo la conservazione i frutti sono stati esaminati per verificarne l'imbrunimento seguendo due procedure: (a) i frutti di ogni pianta sono stati confrontati a coppie secondo uno schema di analisi sequenziale, cessando l'esame non appena veniva raggiunta una decisione sulla superiorita di uno dei due trattamenti postraccolta; (b) tutti i frutti di ogni pianta e di ogni trattamento sono stati esaminati. I frutti esaminati con l'analisi sequenziale sono state 4206, mentre il numero totale di frutti era 6660. L'analisi sequenziale ha permesso di ridurre di circa il 37% la dimensione del campione, senza alterare significativamente i risultati finali relativi alle percentuali di frutti imbruniti di ogni trattamento.
Bibliography:Q
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ISSN:0304-0577