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Titolo:
Fate and interaction with soil N of fertilizer N-15 applied to wheat at different growth stages
Autore:
Ashraf, M; Farooq-e-Azam;
Indirizzi:
Nucl Inst Agr & Biol, Faisalabad, Pakistan Nucl Inst Agr & Biol Faisalabad Pakistan r & Biol, Faisalabad, Pakistan
Titolo Testata:
CEREAL RESEARCH COMMUNICATIONS
fascicolo: 4, volume: 26, anno: 1998,
pagine: 397 - 404
SICI:
0133-3720(1998)26:4<397:FAIWSN>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRITICUM-AESTIVUM L; WINTER-WHEAT; LABELED NITROGEN; EFFICIENCY; YIELD; REMOBILIZATION; GENOTYPES; RECOVERY; LOSSES; CORN;
Keywords:
added nitrogen interaction; fertilizer N losses; N-15; N use efficiency; post-anthesis dry matter accumulation; post-anthesis N uptake (PANU);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Ashraf, M Nucl Inst Agr & Biol, Faisalabad, Pakistan Nucl Inst Agr & BiolFaisalabad Pakistan Faisalabad, Pakistan
Citazione:
M. Ashraf e Farooq-e-Azam, "Fate and interaction with soil N of fertilizer N-15 applied to wheat at different growth stages", CEREAL RES, 26(4), 1998, pp. 397-404

Abstract

A greenhouse study was conducted to compare three wheat cultivars for fertilizer-N (applied as N-15-labelled ammonium sulphate) and soil-N uptake at different growth stages. Differences were observed for bread wheat and durum wheat for different plant parameters. Contribution of fertilizer-N to thetotal plant-N of the three wheat cultivars ranged between 4.1 and 23.7%. Applied fertilizer N had a significant bearing on the plant-uptake of soil-Nresulting in substantial added nitrogen interaction (ANI); the interactionof the two N sources was variable for the three wheat cultivars. Although the three wheat cultivars differed in uptake of fertilizer N applied at different growth stages, durum was least efficient in making use of N applied at anthesis. Losses of N applied at different growth stages varied (22-56%), but were maximum from that applied at anthesis. Post-anthesis dry matter accumulation (PADMA) and post-anthesis N uptake (PANU) were more for bread wheat than durum wheat and seemed to contribute significantly to higher drymatter and N yield in the former.

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Documento generato il 09/04/20 alle ore 11:03:06