Nitrogen-15 labeling of Crotalaria juncea green manure
Most studies dealing with the utilization of 15N labeled plant material do not present details about the labeling technique. This is especially relevant for legume species since biological nitrogen fixation difficults plant enrichment. A technique was developed for labeling leguminous plant tissue with 15N to obtain labeled material for nitrogen dynamics studies. Sun hemp (Crotalaria juncea L.) was grown on a Paleudalf, under field conditions. An amount of 58.32 g of urea with 70.57 ± 0.04 atom % 15N was sprayed three times on plants grown on eight 6-m²-plots. The labelled material presented 2.412 atom % 15N in a total dry matter equivalent to 9 Mg ha-1 This degree of enrichment enables the use of the green manure in pot or field experiments requiring 15N-labeled material.
Main Authors: | Ambrosano,Edmilson José, Trivelin,Paulo Cesar Ocheuze, Cantarella,Heitor, Rossetto,Raffaella, Muraoka,Takashi, Bendassolli,José Albertino, Ambrosano,Gláucia Maria Bovi, Tamiso,Luciano Grassi, Vieira,Felipe de Campos, Prada Neto,Ithamar |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Escola Superior de Agricultura "Luiz de Queiroz"
2003
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100027 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
15N-labeled nitrogen from green manure and ammonium sulfate utilization by the sugarcane ratoon
by: Ambrosano,Edmilson José, et al.
Published: (2011) -
TÉCNICA PARA MARCAÇÃO DOS ADUBOS VERDES CROTALÁRIA JÚNCEA E MUCUNA-PRETA COM 15N PARA ESTUDOS DE DINÂMICA DO NITROGÊNIO
by: AMBROSANO,EDMILSON JOSÉ, et al.
Published: (1997) -
Sulfur utilization by rice and Crotalaria juncea from sulfate - 34S applied to the soil
by: Trivelin,Paulo Cesar Ocheuze, et al.
Published: (2002) -
Nitrogen supply to corn from sunn hemp and velvet bean green manures
by: Ambrosano,Edmilson José, et al.
Published: (2009) -
Nitrogen mineralization in soils amended with sunnhemp, velvet bean and common bean residues
by: Ambrosano,Edmilson José, et al.
Published: (2003)