Diseases

Peach leaf curl

Taphrina deformans

Peach leaf curl is a dangerous stone fruit disease caused by the fungus Taphrina deformans. It manifests as blistering and deformation of leaves, shoots, and fruits, leading to mass defoliation and a yield loss of up to 80%.

Mentioned in descriptions 3 891 varieties reference book.

The disease affects peach, nectarine, apricot, and almond, appearing immediately after bud break. Blisters of a pale green, yellow, or scarlet red color form on the leaves, and a whitish waxy coating eventually appears on their undersides. Shoots thicken and become twisted, while affected fruits develop a smooth surface, become covered in cracks, and drop off.

Pathogen development depends on weather conditions: the critical infection period is a cool and humid spring with temperatures between +6 and +15°C. The fungus overwinters on the surface of branches, in bark crevices, and within bud scales. Upon the arrival of dry and hot weather with temperatures above +26°C, infection activity ceases.

The concept of complete resistance to the disease does not exist; however, varietal resistance is often linked to differences in bud break timing: late-maturing varieties are less likely to encounter the peak of pathogen activity. Resistance evaluation in variety testing is conducted visually using a point scale in collection orchards under comparative monitoring in identical conditions.

Sources10

Breakdown by crop

Tomato Leaf Curl 732 Peach leaf curl 283 Bean leaf curl 32 Squash Leaf Curl 24 Lettuce leaf curl 23 Tomato leaf curl 22 Cucumber leaf curl 19 Parsley leaf curl 12 Leaf curl — Kale 8 Pepper Leaf Curl 6 Peach leaf curl of nectarine 6 Curly Top — Sugar Beet 5 Melon Leaf Curl 4 Peach leaf curl of almond 4 Leaf curl — Savoy cabbage 4 Apricot leaf curl 3

Found in these crops

Tomato 942 Peach 280 Field pumpkin 33 Tomato 24 Cucumber 16 Lettuce 14 Nectarine 6 Melon 6 Bell pepper 5 Almond 4 hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner 4 Curly kale 3

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Red Haven

Active

Prunus persica (L.) Batsch · Peach

Stat Exp South Haven (US)

CZ ES FR HU NL PL +3

28 records

Spring Time

Active

Prunus persica (L.) Batsch · Peach

Swim, Herbert C|Ontario, CA

ES FR HU

9 records

DP 565

Active

Gossypium hirsutum L. · Upland cotton

Larry Burdett.

6 records

Caldesi 2000

Active

Prunus persica (L.) Batsch · Peach

Vincenzo OSSANI (IT)

ES FR IT

11 records

Summer Rich

Active

Prunus persica (L.) Batsch · Peach

ZAIGER FLOYD

ES FR IT

9 records

TY 12

Active

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.^^^Asahi Industries Co. Ltd.

NL UA

5 records

Red Robin

Active

Prunus persica (L.) Batsch · Peach

Swim, Herbert C|Ontario, CA

ES FR

6 records

Dixired

Active

Prunus persica (L.) Batsch · Peach

United State Department of Agriculture - Georgie (US)

CZ ES FR HU NL SK

19 records

Crest Haven

Active

Prunus persica (L.) Batsch · Peach

CZ ES HU SI SK

14 records

Freedom

Active

Euphorbia pulcherrima Willd. ex Klotzsch · Poinsettia

Paul ECKE RANCH Franz FRUEWIRTH (US)

DE DK FR IT

8 records

Flavortop

Active

Prunus persica (L.) Batsch · Peach

United State Department of Agriculture - Georgie (US)

CZ ES FR HU NL

16 records

Malibu

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)

CZ FR NL SK

9 records

J. H. Hale

Active

Prunus persica (L.) Batsch · Peach

FR NL SI SK

12 records

Fantasia

Active

Prunus persica (L.) Batsch · Peach

United State Department of Agriculture - Georgie (US)

ES FR HU NL

13 records

Helicaz

Active

Solanum lycopersicum L. · Tomato

NUNHEMS B.V., BASF Quimica Colombiana S.A.

NL UA

10 records

Diagramma

Active

Solanum lycopersicum L. · Tomato

Paul Degreef

NL UA

11 records

Tema

Active

Phaseolus vulgaris L. · Common bean

Seminis Vegetable Seeds

ES FR IT

8 records

Fayette

Active

Prunus persica (L.) Batsch · Peach

United State Department of Agriculture - Georgie (US)

ES FR SI

10 records

Fairlane

Active

Prunus persica (L.) Batsch · Peach

United State Department of Agriculture - Georgie (US)

ES FR HU

9 records

Tyty

Active

Solanum lycopersicum L. · Tomato

Wouter Loots

ES NL

7 records

Mamston

Active

Solanum lycopersicum L. · Tomato

Syngenta Seeds, NL

NL UA

8 records

Audaz

Active

Solanum lycopersicum L. · Tomato

Nunhnes B.V

NL UA

8 records

Dreamvine

Active

Solanum lycopersicum L. · Tomato

Silvertand, B. C. H. J.

8 records

Curling

Active

Pisum sativum L. · Pea

SAS FLORIMOND-DESPREZ Veuve et Fils

8 records

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.