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Variations in the composition of apple leaves and the errors associated with sampling
Author(s) -
Moon F. E.,
Hymas Gillian K.
Publication year - 1964
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740150401
Subject(s) - sampling (signal processing) , dry matter , composition (language) , horticulture , yield (engineering) , botany , mathematics , agronomy , biology , linguistics , philosophy , materials science , filter (signal processing) , computer science , metallurgy , computer vision
Intensive leaf sampling of two Cox apple trees was used to study factors affecting yield of leaf dry matter and the nitrogen and mineral contents of the dry matter. Significant differences were found between main branches of the same tree, between different heights of sampling and between non‐fruiting spur leaves on old wood and leaves on new extension growths. Leaf position on new extension growths also affected composition and there were some significant interactions between the main factors. The significance of the results in relation to routine sampling methods is discussed and the need for further sampling investigations emphasised.