Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 421742
Title The drop of flowers and fruits in apple, with special reference to the June drop of Cox's orange pippin and its control with growth regulators
Author(s) Wertheim, S.J.
Source Landbouwhogeschool Wageningen. Promotor(en): S.J. Wellensiek. - Wageningen : Veenman - 73
Department(s) Wageningen University
Publication type Dissertation, internally prepared
Publication year 1971
Keyword(s) afwijkingen, planten - appels - malus - plantenziekten - plantenziektekunde - misvormingen - fasciatie - cultuurmethoden - plantenvoeding - kunstmeststoffen - mest - plantkunde - gewasbescherming - plagenbestrijding - ziektebestrijding - plantenfysiologie - plantenontwikkeling - bloemen - vruchten - plantenorganen - plant disorders - apples - plant diseases - plant pathology - malformations - fasciation - cultural methods - plant nutrition - fertilizers - manures - botany - plant protection - pest control - disease control - plant physiology - plant development - flowers - fruits - plant organs
Categories Plant Disorders and Nutrient Deficiencies / Apples, Pears
Abstract <p/>To study possibilities for increases of yield of the apple cultivar Cox's Orange Pippin, relevant information was gathered about fruit set and fruit drop, in particular about June drop. The information concerned pollination intensity, amount of fruit set, seed content of the fruit, number of leaves per spur, and the influence of the bourse shoots. Several growth regulators were tested to see whether these can reduce June drop.<p/>The main conclusions drawn from the results of these observations are given in Section 3.1.3. (p. 18). The growth regulators examined were NAA, NAAm, GA <sub><font size="-1">3</font></sub> , GA <sub><font size="-1">4+7</font></sub> , BA and ABA. The experimental results are given in Section 3.2.3 (p. 40). The most interesting finding in the latter part of this work was the promising ability of GA <sub><font size="-1">4+7</font></sub> to reduce June drop.<p/>The factors underlying fruit set, fruit drop, and fruit growth and the possible role of the applied regulators under study are discussed, whereby fruit drop was related with leaf abscission.
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