Leaf Diagnosis and the Interpretation of Fertilizer Requirements of Plants
- 10 July 1931
- journal article
- letter
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 74 (1906) , 39-41
- https://doi.org/10.1126/science.74.1906.39
Abstract
The principles proclaimed by Lagatu and Maume during the course of study of the physiology and metabolism of the apple were tested. Dwarf apple trees were grown in pure quartz sand cultures and were supplied with nutrient solutions containing a constant and optimal concentration of P, N, and K. At appropriate periods, leaves and twigs were analysed for total N and K. Total omission of either N or K in no instance resulted in an increased K or N content of leaves. With a decrease of N in the nutrient medium there was a decrease in K concentration of the leaves and with a decrease in K there was a decrease of N. The relative concentration of N and K in twigs was exactly of the same order but of different magnitude.This publication has 3 references indexed in Scilit:
- The Conception of Balance with Respect to the Absorption of Nitrogen, Phosphorus and Potassium by Plants and the Influence of the Level of NutritionScience, 1930
- Balanced Fertilizers and Liebig's Law of the MinimumScience, 1929
- The Effects of Manurial Treatments on the Chemical Composition of Gooseberry Bushes.: I. Effects on Dry Matter, Ash and Ash Constituents of Leaves and Stems of Terminal Shoots and of Fruits; and on Total Nitrogen of Fruits.Journal of Pomology and Horticultural Science, 1928