Yield, Fruit Size, Red Color, and Estimated CropValue in the NC-40 1990 Cultivar/Rootstock Trial inVirginia
Notice bibliographique
Résumé
An NC-140 apple cultivar/rootstock trial was conducted near Blacksburg, VA from 1990 through 1999. In addition to the four cultivars common to all sites (‘Golden Delicious’, ‘Jonagold’, ‘Empire’, and ‘Rome’), we also had ‘Stayman’, and ‘York’. Rootstocks were Mark, Ottawa 3 (O.3), Budagovsky 9 (B.9), Mailing 9 EMLA (M.9EMLA), and Mailing 26 EMLA (M.26EMLA). Our objective in this supplemental study was to evaluate cultivar and rootstock effects on yield, distribution of fruit sizes, and color in order to estimate value of the crop. After eight years of cropping, there were very few significant cultivar x rootstock interactions; therefore, mostly main effects are presented. Fruit size was largest for ‘Rome’ and ‘Jonagold’, intermediate for ‘Stayman’ and ‘York’, and smallest for ‘Golden Delicious’ and ‘Empire’. Trees on M.26EMLA and M.9EMLA produced somewhat larger fruit than did trees on Mark and O.3. Fruit from trees on B.9 were intermediate in size. Red color was variable, so in spite of significant differences, general conclusions were impossible. Projected value/tree for fresh fruit (‘Empire’, ‘Rome’, and ‘Stayman’) based on yield, fruit size, and red color was greatest for trees on M.26EMLA and M.9EMLA, intermediate for trees on O.3, and lowest for trees on Mark and B.9. In estimated value for processing, ‘York’ was higher than ‘Golden Delicious’, and fruit from trees on M26EMLA, O.3, and M.9EMLA were higher in value than those from trees on Mark and B.9. As apple rootstocks have been evaluated in NC-140 trials, prime attention has been paid to survival, tree size, precocity, yield, and mean fruit size (1, 10, 11). In some cases, there have been data published on fruit quality attributes such as soluble solids levels, starch indices, and maturity ratings (2, 3, 4). However, because of limited time and resources, most of the fruit size data have been based on mean fruit weight determined from a 50-fruit sub-sample per tree (10, 11). Unfortunately, mean fruit weight provides no information on either the range or distribution of fruit sizes. Therefore, economic projections of the relative value of the crop from the test trees is impossible. As a supplement to the 1990 NC-140 Apple Cultivar/Rootstock Trial, we sized all fruit for six of the eight years in which fruit were harvested. In addition, a sub-sample of fruits was evaluated for red color. From a combination of yield data within these two data sets, we estimated crop values.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».