Fixed-time adjustable dose site-specific fertilizer nitrogen management in transplanted irrigated rice ( Oryza sativa L.) in South Asia

► We worked out a leaf colour chart (LCC) based strategy to apply fertilizer N critical growth stages of rice.► At transplanting 30 kg N ha −1 was adequate.► Adjustable N doses were found to be 45, 30 or 0 kg N ha −1 depending upon leaf colour to be

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Bibliographische Detailangaben
Veröffentlicht in:	Field crops research 2012-02, Vol.126, p.63-69
Hauptverfasser:	Bijay-Singh, Varinderpal-Singh, Yadvinder-Singh, Thind, H.S., Kumar, Ajay, Gupta, R.K., Kaul, Amit, Vashistha, Monika
Format:	Artikel
Sprache:	eng
Schlagworte:	Agrochemicals climate color cultivars developmental stages Fertilizer nitrogen management fertilizer rates Fixed-time adjustable nitrogen dose flowering grain yield inflorescences Irrigated rice irrigation Leaf colour chart leaves monitoring nitrogen nitrogen fertilizers nutrient use efficiency Oryza sativa rice shade tillering
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Beschreibung
Zusammenfassung:	► We worked out a leaf colour chart (LCC) based strategy to apply fertilizer N critical growth stages of rice.► At transplanting 30 kg N ha −1 was adequate.► Adjustable N doses were found to be 45, 30 or 0 kg N ha −1 depending upon leaf colour to be
ISSN:	0378-4290 1872-6852
DOI:	10.1016/j.fcr.2011.09.007