The Comparative Growth of Pineapple Plants With Ammonia and Nitrate Nitrogen

EFFECTS OF DIFFERENT AMOUNTS OF POTASSIUM ON GROWTH AND ASH CONSTITUENTS OF ANANAS COMOSUS (L.) MERR

“…Antagonistic effects by ammonium on calcium were observed by STEWART, THOMAS, and HORNER (48) and SiDERIS, KRAUSS, and YOUNG (44) on A. comosus; BURSTROM (4) on hops; and ASPREY (1) on dices of potato tubers. Summary The effects of high versus low amounts of potassium on the growth and ash constituents of Ananas comosus (L.) MERR., in solution cultures supplied with equal amounts of nitrogen from nitrate or ammonium salts were as follows.…”

Assimilation of Ammonium and Nitrate by Pineapple Plants Grown in Nutrient Solutions and Its Effects on Nitrogenous and Carbohydrate Constitutents

“…STEWART, THOMAS, and HORNEPR (14) studied the ammonium and nitrate nutrition of pineapple plants with results which may be stated briefly as follows: " The best growth was made by plants growing in the normal nitrate nitrogen cultures; those in one-fourth normal cultures made a very poor growth. Under the conditions of this experiment ammonia nitrogen was not readily utilized from the full strength normal nutrient solution.…”

Preliminary Experiment on the Cultivation of Baeria Chrysostoma Under Sterile Conditions

“…Nitrate nitrogen is generally recognized as the best nitrogen SOUTce for green plants," Ammonium nitrogen can replace nitrate nitrogen, but in most cases it is inferior to nitrate, as has been shown by Kruger (1905), Maze (1898, ]900), Prianischnikow (1908Prianischnikow ( ,1923, Stewart (1925), Hutchinson and Miller (1909), etc. The same is true for Baeria grown in sterile culture.…”