Abstract
A still unclear question related to sugarcane cropping refers to the low response of the planted cane to nitrogen fertilization. Two experiments were carried out in areas under a Typic Hapludox, located in Pirassununga, São Paulo State, Brazil, and an Arenic Kandiudult, located in Jaboticabal, São Paulo State, Brazil, with the objective to evaluate planted cane response to nitrogen fertilization at planting. The experimental design was organized as random blocks and treatments consisted of three N rates (40, 80, and 120 kg ha-1 N-urea) and a control without N. Nitrogen fertilizers were applied to the bottom of the planting furrow and then incorporated into the soil. During the maximum growth stage, +1 leaf samples were collected from all experimental plots to evaluate the crop nutritional status. In the Pirassununga experiment, N fertilization at planting increased N, K, Mg, and S contents in the leaves and increased the stalk yield, without effect in the technological attributes. Conversely, no stalk yield response was observed at the Jaboticabal experiment, but N fertilization benefited the stalk technological attributes. The N rates increased the sugar yield per hectare in both experiments. The highest margin of agricultural contribution was obtained at the rate of 40 kg ha-1 N.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 7
Claim · model-written summary
Planting nitrogen increased leaf N, K, Mg and S contents in Pirassununga.
- Taxon
- sugarcanet0
- Treatment
- N fertilization at plantinge0
- Outcome
- N, K, Mg, and S contents in the leavese0
- Direction
- increasede0
- Setting
- Pirassunungae0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“In the Pirassununga experiment, N fertilization at planting increased N, K, Mg, and S contents in the leaves”
Claim · model-written summary
Planting nitrogen increased sugarcane stalk yield in Pirassununga.
- Taxon
- sugarcanet0
- Treatment
- N fertilization at plantinge0
- Outcome
- stalk yielde0
- Direction
- increasede0
- Setting
- Pirassunungae0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“In the Pirassununga experiment, N fertilization at planting increased N, K, Mg, and S contents in the leaves and increased the stalk yield”
Claim · model-written summary
Planting nitrogen did not change technological attributes in Pirassununga.
- Taxon
- sugarcanet0
- Treatment
- N fertilization at plantinge0
- Outcome
- technological attributese0
- Direction
- without effecte0
- Setting
- Pirassunungae0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“In the Pirassununga experiment, N fertilization at planting increased N, K, Mg, and S contents in the leaves and increased the stalk yield, without effect in the technological attributes”
Claim · model-written summary
Planting nitrogen did not change stalk yield in Jaboticabal.
Not reportedTreatmentComparator
Verbatim
t0“sugarcane”
e0“no stalk yield response was observed at the Jaboticabal experiment”
Claim · model-written summary
Planting nitrogen benefited sugarcane stalk technological attributes in Jaboticabal.
- Taxon
- sugarcanet0
- Treatment
- N fertilizatione0
- Outcome
- stalk technological attributese0
- Direction
- benefitede0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“N fertilization benefited the stalk technological attributes”
Claim · model-written summary
Higher nitrogen rates increased sugar yield per hectare in both experiments.
- Taxon
- sugarcanet0
- Treatment
- N ratese0
- Outcome
- sugar yield per hectaree0
- Direction
- increasede0
- Qualifier
- both experimentse0
Not reportedComparator
Verbatim
t0“sugarcane”
e0“The N rates increased the sugar yield per hectare in both experiments”
Claim · model-written summary
The highest agricultural contribution margin occurred at 40 kg ha-1 N.
Verbatim
t0“sugarcane”
e0“The highest margin of agricultural contribution was obtained at the rate of 40 kg ha-1 N”
The same questions in other papers
nitrogen · quality: sugar starch · Saccharum officinarum (sugarcane)Positive and negative results
31 papers in the same direction as this paper · 8 in the opposite direction
- negative
- positive
- positive
36 papers more in this group
See all 40 papers →fertilization · nutrient: content · Saccharum officinarum (sugarcane)Positive and negative results
70 papers in the same direction as this paper · 5 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- negative
74 papers more in this group
See all 78 papers →fertilization · yield · Saccharum officinarum (sugarcane)Positive and negative results
311 papers in the same direction as this paper · 28 in the opposite direction · 6 reporting no difference from an alternative
- positive
- positive
- positive
342 papers more in this group
See all 346 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.