15N-labeled nitrogen from green manure and ammonium sulfate utilization by the sugarcane ratoon
نویسندگان
چکیده
منابع مشابه
The net utilization of ammonium nitrogen by the growing rat.
While it is well known that ruminants (with the aid of rumen microorganisms) can utilize ammonium salts and urea in lieu of dietary protein,” 2 it has long been held that monogastric animals cannot.’ In view of the findings of Foster, Schoenheimer, and Rittenberg3 that dietary ammonium N15 is rapidly incorporated into rat tissue proteins, it seemed possible that the nitrogen of ammonium salts m...
متن کاملThe Contamination of Commercial 15N2 Gas Stocks with 15N–Labeled Nitrate and Ammonium and Consequences for Nitrogen Fixation Measurements
We report on the contamination of commercial 15-nitrogen (15N) N2 gas stocks with 15N-enriched ammonium, nitrate and/or nitrite, and nitrous oxide. 15N2 gas is used to estimate N2 fixation rates from incubations of environmental samples by monitoring the incorporation of isotopically labeled 15N2 into organic matter. However, the microbial assimilation of bioavailable 15N-labeled N2 gas contami...
متن کاملStudies on nitrogen metabolism in tomato with use of isotopically labeled ammonium sulfate.
The stable isotope of nitrogen, N 15, has been employed extensively as a tracer in studies of nitrogen transformations in animals and bacteria, and its use has yielded much information difficult or impossible to obtain otherwise. The extension of this method to studies involving the higher plants, however, has been very limited. Hevesy and coworkers (1) studied the absorption of ammonium ions l...
متن کاملThe Use of Nitrogen-15-depleted Ammonium Sulfate for Estimating Nitrogen Fixation by Leguminous Trees
The feasibility of using N-depleted (NH4)2S04 for assessing biological N2 fixation of leguminous trees was investigated. A slowgrowing species, lebbeck [Albizia lcbbeck (L.) Benthl, and a fastgrowing species, leucaena [Leucaena leucocephala (Lam.) de Wit] were inoculated with appropriate Rkizobium strains and grown under four different levels of N. Each week, 0, 5, 12.5, or 25 mg of Ndepleted (...
متن کاملRatoon stunting disease of sugarcane: isolation of the causal bacterium.
A small coryneform bacterium was consistently isolated from sugarcane with ratoon stunting disease and shown to be the causal agent. A similar bacterium was isolated from Bermuda grass. Both strains multiplied in sugarcane and Bermuda grass, but the Bermuda grass strain did not incite the symptoms of ratoon stunting disease in sugarcane. Shoot growth in Bermuda grass was retarded by both strains.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientia Agricola
سال: 2011
ISSN: 0103-9016
DOI: 10.1590/s0103-90162011000300014