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NITROGEN USE EFFICIENCY OF THREE FIJIAN
SUGARCANE (Saccharum officinarum L.) VARIETIES;
MANA (LF60-3917), NAIDIRI (LF82-2122) AND QAMEA
(LF94-694)
Declaration of Authenticity
Statement by Author
Statement by Supervisor
This thesis is dedicated to the hardworking sugarcane farmers, laborers, cane truck
drivers and everyone associated with the Fijian sugar industry who inspired this
research, and to my beloved parents.
Acknowledgement
Abstract
Saccharum officinarum
Table of Contents
Abstract.............................................................................................................................v
Chapter 1 Introduction....................................................................................................1
Chapter 2 Nitrogen use efficiency of three Fijian sugarcane (Saccharum officinarum
L.) varieties in a pot trial under greenhouse conditions ...............................................6
2.2.1 Site description
2.2.2 Plant material
2.2.3 Experimental design and treatments
2.2.4 Sampling and measurements
2.2.4.1 Biomass
2.2.4.2 N content
2.2.4.3 Nitrogen uptake efficiency (NUpE), nitrogen utilization efficiency (NUtE)
and nitrogen use efficiency (NUE)
2.2.5 Statistical analysis
2.3.1 Biomass and N accumulation under low and high N supply
2.3.2 Determination of NUpE, NUtE and NUE
2.3.3 Relationship between NUE and biomass production
Chapter 3 Nitrogen use efficiency of three Fijian sugarcane (Saccharum officinarum
L.) varieties under field conditions ...............................................................................19
3.2.1 Site description
3.2.2 Plant material
3.2.3 Experimental design and treatments
3.2.4 Sampling and measurements
3.2.4.1 Soil sampling and analyses
3.2.4.2 Plant sampling
3.2.4.3 Biomass and cane yield
3.2.4.4 N content
3.2.4.5 Sucrose content and sugar yield
3.2.4.6 Nitrogen uptake efficiency (NUpE), nitrogen utilization efficiency (NUtE)
and nitrogen use efficiency (NUE)
3.2.5 Statistical analysis
3.3.1 Biomass and cane yield
3.3.2 N accumulation
3.3.3 Sucrose content and sugar yield
3.3.4 Determination of NUpE, NUtE and NUE
3.3.4.1 NUpE
3.3.4.2 NUtE and NUE in terms of biomass production
3.3.4.3 NUtE and NUE in terms of sucrose yield
3.3.5 Relationship between NUE, biomass production and sucrose yield
Chapter 4 Implications of nitrogen use efficiency of three Fijian sugarcane
(Saccharum officinarum L.) varieties for the Fijian sugar industry..........................38
Bibliography ...................................................................................................................41
Introduction
Saccharum officinarum
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Zea mays
Triticum aestivum Oryza sativa
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al.
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Aim
Objectives
Nitrogen use efficiency of three Fijian sugarcane (Saccharum
officinarum L.) varieties in a pot trial under greenhouse conditions
2.1 Introduction
et al. et al. et al.
Saccharum officinarum
et al. et al.
et al. et al.
et al.
et al.
et al. et al. et al.
et al.
et al.
in vitro
et al. et al.
et al.
et al.
et al.
et al. et al.
et al. et al. et al.
et al.
2.2 Materials and Methods
2.2.1 Site description
2.2.2 Plant material
2.2.3 Experimental design and treatments
et al.
2.2.4 Sampling and measurements
2.2.4.1 Biomass
2.2.4.2 N content
et al. et al.
2.2.4.3 Nitrogen uptake efficiency (NUpE), nitrogen utilization efficiency (NUtE) and
nitrogen use efficiency (NUE)
et al.
et al. et al.
2.2.5 Statistical analysis
p
2.3 Results and Discussion
2.3.1 Biomass and N accumulation under low and high N supply
et al. et al.
et al.
et al. et al.
et al. et al. et al.
p
et al.
p
2.3.2 Determination of NUpE, NUtE and NUE
et al. et al.
et al.
et al. et al.
et al.
et al. et al.
p
2.3.3 Relationship between NUE and biomass production
et al.
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et
al. et al.
p
et al. et al.
et al.
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et al.
2.4 Conclusion
Nitrogen use efficiency of three Fijian sugarcane (Saccharum
officinarum L.) varieties under field conditions
3.1 Introduction
et al. et al.
et al.
et al.
et al.
et al. et al. et al.
et al. et al. et al.
et al.
et al.
3.2 Materials and Methods
3.2.1 Site description
3.2.2 Plant material
3.2.3 Experimental design and treatments
et al.
3.2.4 Sampling and measurements
3.2.4.1 Soil sampling and analyses
et al.
et al.
et al.
3.2.4.2 Plant sampling
3.2.4.3 Biomass and cane yield
et al.
3.2.4.4 N content
3.2.4.5 Sucrose content and sugar yield
et
al. et al.
et al.
et al. et al. et al.
et al.
3.2.4.6 Nitrogen uptake efficiency (NUpE), nitrogen utilization efficiency (NUtE) and
nitrogen use efficiency (NUE)
et al.
3.2.5 Statistical analysis
p
3.3 Results and Discussion
3.3.1 Biomass and cane yield
et al.
et al.
p
p
3.3.2 N accumulation
et al.
p
3.3.3 Sucrose content and sugar yield
et al. et al.
et al.
et al.
p
3.3.4 Determination of NUpE, NUtE and NUE
p
3.3.4.1 NUpE
3.3.4.2 NUtE and NUE in terms of biomass production
et al.
3.3.4.3 NUtE and NUE in terms of sucrose yield
3.3.5 Relationship between NUE, biomass production and sucrose yield
et al. et
al.
p
p
et al.
et al.
et al. et al.
et al. et al.
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3.4 Conclusion
Implications of nitrogen use efficiency of three Fijian sugarcane
(Saccharum officinarum L.) varieties for the Fijian sugar industry
et al. et
al. et al.
et al.
et al.
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al. et al. et al.
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et al. et al. et al. et al.
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