2011
DOI: 10.17660/actahortic.2011.909.41
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Crop Load Regulation in 'Conference' Pears

Abstract: To achieve target yields, crop regulation measures in 'Conference' pears may vary from year to year and may embrace measures to stimulate flower bud development and enhance fruit set, but often also chemical thinning of excess fruit. In 'Conference' the value of the crop at harvest strongly depends on the size distribution of the fruit. The aim is to harvest as many pears as possible with fruit diameters of 65 mm or more, since these sizes provide better economic returns than do smaller fruit. In years with am… Show more

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Cited by 13 publications
(21 citation statements)
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“…Our results corroborate a previous report that demonstrated the thinning potential of metamitron for 'Conference' pear in two trials at two orchards in The Netherlands (Maas and van der Steeg, 2011). Even though foliar application of metamitron resulted in a significant reduction of fruit set for 'Conference' pear, the relationship was linearly correlated with application rates between 175 to 700 ppm (Maas and van der Steeg, 2011). Under the environmental conditions of our trials, thinning efficacy of metamitron for 'Bartlett' pear typically saturated 300 ppm, and higher rates did not produce appreciable, reductions in fruit set.…”
Section: Discussionsupporting
confidence: 92%
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“…Our results corroborate a previous report that demonstrated the thinning potential of metamitron for 'Conference' pear in two trials at two orchards in The Netherlands (Maas and van der Steeg, 2011). Even though foliar application of metamitron resulted in a significant reduction of fruit set for 'Conference' pear, the relationship was linearly correlated with application rates between 175 to 700 ppm (Maas and van der Steeg, 2011). Under the environmental conditions of our trials, thinning efficacy of metamitron for 'Bartlett' pear typically saturated 300 ppm, and higher rates did not produce appreciable, reductions in fruit set.…”
Section: Discussionsupporting
confidence: 92%
“…All other experiments were initiated later in fruit development. Metamitron application to 'Conference' pear also produced more uniform results when applied at 10-to 12-mm fruit diameter in one trial compared with 6-to 8-mm in a second trial (Maas and van der Steeg, 2011).…”
Section: Discussionmentioning
confidence: 88%
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“…Naphthalene acetic acid has been used on other cultivars (McArtney and Wells 1995;Meland and Gjerde 1996;Vilardell et al 2005;Asin et al 2009) with varying degrees of success. 6-Benzyladenine has also been used to thin several pear varieties with quite consistent results when applied between 100 and 200 mg L −1 (Stern and Flaishman 2003;Vilardell et al 2005;Dussi and Sugar 2011;Maas and Van der Steeg 2010;Bound 2015).…”
Section: Introductionmentioning
confidence: 93%
“…Horticulture involves many tedious and labor-intensive tasks which require the employment of expensive, trained personnel. As it is becoming increasingly difficult for growers to hire a sufficiently large work force (Maas and van der Steeg, 2011), an increasing amount of research is targeted to automate or augment the operation of cultivation techniques. Many of these horticultural practices require some form of feedback to either assess the state of the canopy (e.g.…”
Section: Introductionmentioning
confidence: 99%