Thinning apples and pears in a Nordic climate II. The effect of NAA, ethephon and lime sulfur on fruit quality of four pear cultivars
1996
Meland, M. | Gjerde, B. (Planteforsk - Norsk Inst. for Planteforskning, Ullensvang Forskingssenter, Lofthus (Norway))
Postbloom sprays of NAA over 3 years thinned 'Keiserinne', 'Amanlis' and 'Moltke', but not 'Clara Frijs' pears. NAA increased fruit size, Grade 1 percentage and soluble solids concentrations. Flesh firmness of 'Keiserinne' and 'Amanlis' was reduced by NAA, but had little impact on the seed number. Lime sulfur applied at full bloom had no benifical effect on pear quality. A low dosage of ethephon in the same tankmix as NAA and lime sulfur did not influence the fruit quality either. It is concluded that the market quality of 'Amanlis' and 'Moltke' pears is questionable.
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