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Titolo:
INTERACTION OF N-15-LABELED AMMONIUM-NITRATE, UREA AND AMMONIUM-SULFATE WITH SOIL N DURING GROWTH OF WHEAT (TRITICUM-AESTIVUM L) UNDER FIELD CONDITIONS
Autore:
HAMID A; AHMAD M;
Indirizzi:
NUCL INST AGR & BIOL,DIV SOIL SCI,POB 128 FAISALABAD PAKISTAN
Titolo Testata:
Biology and fertility of soils
fascicolo: 3, volume: 20, anno: 1995,
pagine: 185 - 189
SICI:
0178-2762(1995)20:3<185:IONAUA>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
FERTILIZER-NITROGEN; EFFICIENCY; FATE; N-15;
Keywords:
N-15-LABELED FERTILIZER; ADDED N INTERACTION; FERTILIZER N UPTAKE; SOIL N UPTAKE; WHEAT; TRITICUM AESTIVUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
A. Hamid e M. Ahmad, "INTERACTION OF N-15-LABELED AMMONIUM-NITRATE, UREA AND AMMONIUM-SULFATE WITH SOIL N DURING GROWTH OF WHEAT (TRITICUM-AESTIVUM L) UNDER FIELD CONDITIONS", Biology and fertility of soils, 20(3), 1995, pp. 185-189

Abstract

The effects of N-15-labelled ammonium nitrate, urea and ammonium sulphate on yield and uptake of labelled and unlabelled N by wheat (Triticum aestivum L. cv. Mexi-Pak-65) were studied in a field experiment. The dry matter and N yields were significantly increased with fertilizerN application compared to those from unfertilized soil. The wheat crop used 64.0 - 74.8%, 61.5 - 64.7% and 61.7 - 63.4% of the N from ammonium nitrate, urea and ammonium sulphate, respectively. The fertilizer N uptake showed that ammonium nitrate was a more available source of Nfor wheat than urea and ammonium sulphate. The effective use of fertilizer N (ratio of fertilizer N in grain to fertilizer N in whole plant) was statistically similar for the three N fertilizers. The application of fertilizer N increased the uptake of unlabelled soil N by wheat,a result attributed to a positive added N interaction, which varied with the method of application of fertilizer N. Ammonium nitrate, urea and ammonium sulphate gave 59.3%, 42.8% and 26.3% more added N interaction, respectively, when applied by the broadcast/worked-in method than with band placement. A highly significant correlation between soil Nand grain yield, dry matter and added N interaction showed that soil N was more important than fertilizer N in wheat production. A values were not significantly correlated with added N interaction (r = 0.719). The observed added N interaction may have been the result of pool substitution, whereby added labelled fertilizer N stood proxy for unlabelled soil N.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 12:54:22