Abstract
Water and N are often limiting factors for sugarcane ( Saccharum spp.) production. This study was conducted to determine the effect of different levels of water availability on sugarcane growth, yield, and responses to N application, and also to evaluate the effectiveness of alternative N application methods. Three irrigation levels (20% below crop evapotranspiration [ETc], full ETc replacement, and 20% above ETc), four N application rates (0, 60, 120, and 180 kg N ha −1 ), and three fertilizer application methods (through‐the‐drip, sidedress, and knifed into the middle of the plant stool or ‘stool splitter’) were evaluated on sugarcane for four successive crops. Increasing water application in this study resulted in increased growth but no significant differences in cane or sugar yields. Water use efficiency therefore increased as water application declined, averaging 8.4 Mg cane mL −1 of water, including both rainfall and irrigation. Nitrogen application through the drip system resulted in linear increases in cane yield every year up to the highest rate applied of 180 kg N ha −1 , averaging 74 kg per kg N applied in the plant through second ratoon crops, and 192 kg per kg N applied in the third ratoon crop. Over the 4 yr this study was conducted, N application through the drip system produced yields which were not significantly different from the sidedress application, while the ‘stool splitter’ application method was consistently the most inefficient N fertilizer application method. This work shows that maximum cane and sugar yields can be obtained, and responses to rate of N application are not reduced at less than optimum soil moisture conditions.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Increasing water application increased sugarcane growth.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“Increasing water application in this study resulted in increased growth”
Claim · model-written summary
Increasing water application did not significantly change sugarcane cane or sugar yields.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“Increasing water application in this study resulted in increased growth”
e3“but no significant differences in cane or sugar yields”
Claim · model-written summary
Water use efficiency of sugarcane increased as water application declined.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“Water use efficiency therefore increased as water application declined”
Claim · model-written summary
Sugarcane water use efficiency averaged 8.4 Mg cane mL −1 of water, including rainfall and irrigation.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“averaging 8.4 Mg cane mL −1 of water, including both rainfall and irrigation”
e3“Water use efficiency therefore increased as water application declined”
Claim · model-written summary
Nitrogen application through the drip system increased sugarcane cane yield linearly every year up to the highest rate applied.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“Nitrogen application through the drip system resulted in linear increases in cane yield every year”
e3“up to the highest rate applied”
Claim · model-written summary
Sugarcane cane yield averaged 74 kg per kg N applied through second ratoon crops.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“Nitrogen application through the drip system resulted in linear increases in cane yield every year”
e3“averaging 74 kg per kg N applied in the plant through second ratoon crops”
Claim · model-written summary
Sugarcane cane yield was 192 kg per kg N applied in the third ratoon crop.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“Nitrogen application through the drip system resulted in linear increases in cane yield every year”
e3“and 192 kg per kg N applied in the third ratoon crop”
Claim · model-written summary
Drip-applied nitrogen yielded not significantly different sugarcane yields from sidedress application.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“N application through the drip system produced yields which were not significantly different from the sidedress application”
Claim · model-written summary
The stool splitter nitrogen application method was consistently the most inefficient method for sugarcane.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“‘stool splitter’ application method was consistently the most inefficient N fertilizer application method”
Claim · model-written summary
Sugarcane responses to nitrogen rate were not reduced under less than optimum soil moisture.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“responses to rate of N application are not reduced at less than optimum soil moisture conditions”
Claim · model-written summary
Maximum sugarcane cane and sugar yields can be obtained.
Verbatim
e1“Water and N are often limiting factors for sugarcane”
e2“This work shows that maximum cane and sugar yields can be obtained”
The same questions in other papers
nitrogen · yield · Saccharum officinarum (sugarcane)Results differ
18 papers in the same direction as this paper · 118 in the opposite direction
- positive
- positive
- positive
133 papers more in this group
See all 137 papers →irrigation · yield · Saccharum officinarum (sugarcane)Positive and negative results
12 papers in the same direction as this paper · 129 in the opposite direction
- positive
- positive
- positive
138 papers more in this group
See all 142 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.