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Sprout damage is undesirable germination of wheat kernels that occurs on mature, unharvested wheat when wet field conditions persist just prior to and during the harvest. Mature wheat that has been cut and left lying in the field prior to threshing is particularly vulnerable to sprout damage. Early cold weather in Canada often forces wheat producers there to cut and windrow their crop to allow for drying. Wet conditions can then cause widespread sprout damage. If it has occurred, there is a dramatic increase of the enzyme alpha-amylase. The Falling Number test is a measure of the presence of this enzyme. A high falling number indicates that the wheat is sound and satisfactory for most baking processes. A low falling number indicates that harmful sprouting has occurred and is suggestive of

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  • Germination sur pied (fr)
  • Sprout damage (en)
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  • La germination sur pied des céréales est le déclenchement de la germination des grains avant la récolte. Ce processus affecte les épis dans certaines conditions : une levée de la dormance induite par une température élevée dès le stade laiteux-pâteux, suivie par la germination elle-même, induite par des températures basses et par un excès d'humidité pendant la dernière phase de remplissage des grains.Ce phénomène entraîne une augmentation importante de l'activité alpha-amylasique des grains, ce qui peut les rendre impropres à certaines utilisations (meunerie, boulangerie, amidonnerie, etc.). (fr)
  • Sprout damage is undesirable germination of wheat kernels that occurs on mature, unharvested wheat when wet field conditions persist just prior to and during the harvest. Mature wheat that has been cut and left lying in the field prior to threshing is particularly vulnerable to sprout damage. Early cold weather in Canada often forces wheat producers there to cut and windrow their crop to allow for drying. Wet conditions can then cause widespread sprout damage. If it has occurred, there is a dramatic increase of the enzyme alpha-amylase. The Falling Number test is a measure of the presence of this enzyme. A high falling number indicates that the wheat is sound and satisfactory for most baking processes. A low falling number indicates that harmful sprouting has occurred and is suggestive of (en)
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  • Report for Congress: Agriculture: A Glossary of Terms, Programs, and Laws, 2005 Edition (en)
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  • La germination sur pied des céréales est le déclenchement de la germination des grains avant la récolte. Ce processus affecte les épis dans certaines conditions : une levée de la dormance induite par une température élevée dès le stade laiteux-pâteux, suivie par la germination elle-même, induite par des températures basses et par un excès d'humidité pendant la dernière phase de remplissage des grains.Ce phénomène entraîne une augmentation importante de l'activité alpha-amylasique des grains, ce qui peut les rendre impropres à certaines utilisations (meunerie, boulangerie, amidonnerie, etc.). La germination sur pied des céréales se traduit par une baisse du temps de chute de Hagberg (TCH), qui mesure l'activité des amylases qui se développent dans le grain dès le début du processus de germination. Il n’existe cependant pas de relation stricte entre le pourcentage de grains germés et le TCH. Concernant le blé tendre (froment), une activité trop prononcée de l'alpha-amylase produit de la pâte trempée et collante qui est difficile à manier. La mie de pain est collante et difficile à trancher, elle adhère aux lames de la trancheuse. Les pains sont souvent déformés et d'apparence peu appétissante. (fr)
  • Sprout damage is undesirable germination of wheat kernels that occurs on mature, unharvested wheat when wet field conditions persist just prior to and during the harvest. Mature wheat that has been cut and left lying in the field prior to threshing is particularly vulnerable to sprout damage. Early cold weather in Canada often forces wheat producers there to cut and windrow their crop to allow for drying. Wet conditions can then cause widespread sprout damage. If it has occurred, there is a dramatic increase of the enzyme alpha-amylase. The Falling Number test is a measure of the presence of this enzyme. A high falling number indicates that the wheat is sound and satisfactory for most baking processes. A low falling number indicates that harmful sprouting has occurred and is suggestive of reduced baking quality. In bread, too much alpha-amylase activity will cause wet sticky bread crumb with large voids in the loaf and too little causes dry crumble bread crumb and high loaf density. (en)
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