Abstract
Nitrogen fertilizer sources respond differently under dryland and irrigated fields and that affects sorghum growth. This study was carried out during the 2018/19 and 2019/20 planting seasons at Molelwane farm, North West, South Africa. The objective of this study was to determine the effect of nitrogen fertilizer source, cultivar and field condition on the growth performance of sorghum. The experiment was a 2x5x2 factorial arranged in a split-split plot experiment that was fitted into a randomized complete block design. The main plot factor was irrigation and dryland field conditions, the subplot factor was nitrogen sources (limestone ammonium nitrate, urea, ammonium sulphate, ammonium sulphate nitrate, and control) and the sub-sub plot was the cultivars (Titan and Avenger). The measured growth parameters included plant height, number of leaves, leaf chlorophyll content, leaf area and stem diameter. Nitrogen fertilizer source had no significant effect (P>0.05) on sorghum plant height and number of leaves during the 2018/19 and 2019/20 planting seasons. Even though no significant effects were observed during both planting seasons, the sorghum treated with urea and ammonium sulphate nitrate attained a higher plant height. Field conditions had a significant effect (P<0.05) on plant height and the number of leaves of sorghum plants for both planting seasons. Sorghum planted under dryland field conditions had taller plant and a higher number of leaves. In conclusion nitrogen fertilizer source like ammonium sulphate nitrate and urea significantly enhanced sorghum growth, with split application recommended to reduce nutrient loss. Cultivars such as Avenger and Titan perform well and should be chosen based on the environmental conditions. Effective practices including limestone ammonium nitrate application and moisture management, are essential for sustainable sorghum production, even in dryland 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 10
Claim · model-written summary
Nitrogen fertilizer source had no significant effect on sorghum height or leaf number in either season.
- Treatment
- Nitrogen fertilizer sourcee0
- Outcome
- plant height and number of leavese0
- Direction
- no significant effecte0
- Qualifier
- during the 2018/19 and 2019/20 planting seasonse0
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilizer source had no significant effect (P>0.05) on sorghum plant height and number of leaves during the 2018/19 and 2019/20 planting seasons.”
Claim · model-written summary
Urea produced higher sorghum plant height, though effects were not significant.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the sorghum treated with urea and ammonium sulphate nitrate attained a higher plant height.”
Claim · model-written summary
Ammonium sulphate nitrate produced higher sorghum plant height, though effects were not significant.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the sorghum treated with urea and ammonium sulphate nitrate attained a higher plant height.”
Claim · model-written summary
Field conditions significantly affected sorghum plant height and leaf number in both seasons.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field conditions had a significant effect (P<0.05) on plant height and the number of leaves of sorghum plants for both planting seasons.”
Claim · model-written summary
Dryland sorghum was taller and had more leaves.
- Treatment
- dryland field conditionse0
- Outcome
- taller plant and a higher number of leavese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum planted under dryland field conditions had taller plant and a higher number of leaves.”
Claim · model-written summary
The authors concluded that ammonium sulphate nitrate enhanced sorghum growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen fertilizer source like ammonium sulphate nitrate and urea significantly enhanced sorghum growth”
Claim · model-written summary
The authors concluded that urea enhanced sorghum growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen fertilizer source like ammonium sulphate nitrate and urea significantly enhanced sorghum growth”
Claim · model-written summary
The authors recommend split nitrogen application to reduce nutrient loss.
- Outcome
- split application recommended to reduce nutrient losse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with split application recommended to reduce nutrient loss.”
t0“Growth Performance of Sorghum”
Claim · model-written summary
Avenger and Titan perform well and should be selected according to environmental conditions.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivars such as Avenger and Titan perform well and should be chosen based on the environmental conditions.”
t0“Growth Performance of Sorghum”
Claim · model-written summary
Limestone ammonium nitrate application and moisture management were recommended for sustainable production.
- Outcome
- limestone ammonium nitrate application and moisture managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effective practices including limestone ammonium nitrate application and moisture management, are essential for sustainable sorghum production, even in dryland conditions.”
The same questions in other papers
nitrogen · growth · SorghumResults differ
80 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative
- negative
- no effect
- no effect
89 papers more in this group
See all 93 papers →fertilization · growth · SorghumResults differ
15 papers in the same direction as this paper · 104 in the opposite direction
- positive
- positive
- positive
116 papers more in this group
See all 120 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.