A Comparison of the Absorption of Ignorance Elements, and of the Buffer Systems of Legumes and Non-Legumes, and Its Bearing Upon Existing Theories

Effects of Calcium Deficiency on Nitrate Absorption and on Metabolism in Tomato

“…The literature (9,11,37,59,62) is full of contradictory statements as to the effect of calcium deficiency on the pH of plants. Where whole tops are employed as a sample, the pH is usually lower in the calcium-deficient plants than in the more vigorously growing plants that have had an adequate supply of calcium; the difference can be accounted for by the fact that there is a larger amount of meristematic tissue, notably alkaline (20), in the latter.…”

Varietal Differences in the Phosphorus Feeding Capacity of Plants

“…There is much discussion in the literature of plant nutrition (12,22,29) with regard to this time element,…”

“…There is much discussion in the literature of plant nutrition (12,22,29) with regard to this time element, and some divergence of opinion. A further purpose of this experiment was the investigation of the problem of timed application of fertilizers, particularly with reference to the absorption of phosphates, and, finally, to vary the time of application of other inorganic elements for comparison with each other and with phosphorus.…”

“…The red was less conspicuous in -P (a) H, 8 Changed, [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] Red leaves, Some red in lower leaf margins; female flowers, 11-30 Normal in color, 11-11. Chlorosis in 43. Red spots near tip in 45, [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] Healthy plants, 11-11. Roots purple, [11][12][13][14][15][16][17][18][19][20][21][22][23][24]…”

Relation of Western Yellow Pine Seedlings to the Reaction of the Culture Solution

“…The mixed saps were well buffered, as shown by the titration curves, although slight differences are to be noted. The buffer system of a plant may be affected by the external media, according to THERON (37) and others (14,29), and this system is affected by the acid and alkaline reserves in the plant. Some investigators have concluded that certain specific substances are responsible for the buffer system.…”