Scanning report fruit thinning pcfruit Year 2

Fruit thinning is an important activity for pipfruit growers that determines the economic result since higher prices are obtained for larger fruits. Although it increases fruit size and has a positive effect on the number of flower buds for the next season, the thinning effect of 6-BA is sometimes too small. Combination of 6-BA with NAA is possible, but can yield over thinning in pear. Metamitron at 165 g a.i. (Brevis 1.1 kg/ha) results in reliable and profitable thinning and larger pears. However, cloudiness with low radiation and high night temperatures in the days before and after Brevis application can result in too strong thinning as well as the use after strong frost during or shortly after bloom.
Also in apple 6-BA has a rather weak thinning effect and a small positive effect on fruit size, but it stimulates flower bud development. Combination with NAA is possible on apple. Brevis at 1.1 kg/ha suffices for a moderate thinning. For strong thinning or cultivars that are difficult to thin it is best to use 1.1 kg/ha twice (second time can be limited to the top of the trees), while one application at 1.65 kg/ha is advised for ‘Golden’. Similar care as with pear should be taken when Brevis is used under bad weather conditions of low radiation and high night temperatures or after frost damage during bloom.

Documents

Scanning report pcfruit Year 2 Fruit thinning WP5 () Scanning report

Details

Activity type

Publication of scanning report

Activity work package

Secure sustainable fruit production

Activity number

PCFRUIT-WP5-A42

Activity contact

Serge Remy
pcfruit,
Fruittuinweg 1
3800 Sint-Truiden, Belgium
Tel.: +32 (0)11 69 71 50
Email: [email protected]
Website: www.pcfruit.be

Activity partner

PCFRUIT

Activity country

Belgium

Last edit

19-07-2019