Effect of varying levels of nitrogen, phosphorous, potassium, and calcium on the quality of the Newburgh raspberry
Notice bibliographique
Résumé
The Newburgh raspberry, ever since its development at the New York State Experiment Station, Geneva, New York, has been noted for its superior vigor and productiveness, and its ability to withstand winter injury even in areas in which, a high water table is common. In many districts of the Fraser Valley, in which restricted sub-surface drainage is prevalent the variety was received enthusiastically largely because of these qualities. During the period of World War II and the immediate postwar years there was an increasing market for sulphur dioxide preserved berries to supply the overseas demand. Since a ready market awaited all the fruit that could be produced, yield became of paramount importance, and quality received little attention. Under these circumstances the Newburgh became the dominant variety in the new plantings. In some of the newer districts of Sumas Prairie, Yarrow and Chilliwack, this variety accounted for as high as 90% of the total raspberry acreage. With the termination of the overseas contract in 1945, the market for sulphur dioxide preserved berries was virtually wiped out, leaving the berry industry dependent largely on local and American markets for the fresh and frozen product. This situation brought the weakness of the Newburgh into the limelight. Its low sugar content, resulting in a rather acid flavor, began to draw increasing criticism. Likewise its adaptability for the quick freeze method of preserving became rather doubtful. A product is said to possess freezing qualities to the extent that it retains, during and after freezing, its natural shape, colour and flavor. Due to its high water content, the Newburgh does not retain its shape very well. Its relatively low sugar content often results in too tart a flavor, or, if acidity also is lacking, gives it a flat taste. Since the Newburgh possesses characteristics which make it particularly suited to certain areas, the question arose, whether fertilizer treatments could be used to improve its quality. Considerable work has been done in the past on the effect of fertilizer treatment on plant growth, general vigor and yield. Not until quite recently, however, has any attention been given to its effect on the quality of the crop produced. The purpose of the present experiment was to ascertain the effect of varying amounts of nitrogen, phosphorous and potassium in the fertilizer applied on the quality of the Newburgh raspberry. Determinations were made on sugar content, vitamin C. content, total solids, soluble solids, proteins, acidity, total minerals, flavor, and freezing quality, all of which are important characteristics of quality.
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Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 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 | 0,001 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,004 | 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 source (Gemma direct ou Codex distillé), 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 ».