Abstract
Some sources of nitrogen fertilizer can be easily lost in the soil and result with yield reduction in grain sorghum. The objective of this study was to determine the effects of nitrogen fertilizer sources and field conditions on yield of grain sorghum. A 2 x 5 x 2 factorial field experiment arranged in a split-split plot design was executed in North-West University experimental farm during 2018/19 and 2019/20 planting seasons. The main plots were two field conditions (irrigated and rainfed), the subplots were two sorghum cultivars (Titan and Avenger) and the sub-subplots were nitrogen sources (LAN, Urea, ammonium sulphate, ammonium sulphate nitrate and control). The measured yield parameters were plant population, field biomass yield, panicle mass, grain yield and 1000 grain mass. Though no significant differences were observed amongst the nitrogen sources, sorghum treated with limestone ammonium nitrate showed a higher panicle mass of 6173.14 and 5979.08 kg/ha during the 2018/19 and 2019/20 planting seasons respectively. During the 2018/19 planting season, sorghum treated with limestone ammonium nitrate and ammonium sulphate nitrate had a higher grain yield of 4132.43 and 4088.33 kg/ha respectively. During the 2019/20 planting season, sorghum treated with ammonium sulphate nitrate, limestone ammonium nitrate and urea had a higher grain yield of 4656 kg/ha each. Field condition had a significant effect on sorghum panicle mass and grain yield during the 2018/19 and 2019/20 planting seasons. Sorghum planted under irrigation had a significantly higher panicle mass of 6316.53 and 6781.75 kg/ha during both planting seasons respectively. Sorghum planted under irrigation had a significantly higher grain yield of 4198.02 and 4823.59 kg/ha during both planting seasons respectively. In this study, limestone ammonium nitrate and urea are recommended to farmers since both fertilizers were found to improve sorghum biomass, panicle mass and grain yields. Irrigation field condition was found to enhance panicle mass and grain yield of sorghum.
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Claims 11
Claim · model-written summary
Sorghum treated with limestone ammonium nitrate had a higher panicle mass in 2018/19 (6173.14 kg/ha).
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sorghum treated with limestone ammonium nitrate showed a higher panicle mass of 6173.14 and 5979.08 kg/ha during the 2018/19 and 2019/20 planting seasons respectively”
Claim · model-written summary
Sorghum treated with limestone ammonium nitrate had a higher panicle mass in 2019/20 (5979.08 kg/ha).
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sorghum treated with limestone ammonium nitrate showed a higher panicle mass of 6173.14 and 5979.08 kg/ha during the 2018/19 and 2019/20 planting seasons respectively”
Claim · model-written summary
Limestone ammonium nitrate gave a higher grain yield in 2018/19 (4132.43 kg/ha).
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“During the 2018/19 planting season, sorghum treated with limestone ammonium nitrate and ammonium sulphate nitrate had a higher grain yield of 4132.43 and 4088.33 kg/ha respectively”
Claim · model-written summary
Ammonium sulphate nitrate gave a higher grain yield in 2018/19 (4088.33 kg/ha).
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“During the 2018/19 planting season, sorghum treated with limestone ammonium nitrate and ammonium sulphate nitrate had a higher grain yield of 4132.43 and 4088.33 kg/ha respectively”
Claim · model-written summary
Ammonium sulphate nitrate, limestone ammonium nitrate and urea each gave a higher grain yield in 2019/20 (4656 kg/ha).
- Treatment
- ammonium sulphate nitrate, limestone ammonium nitrate and ureae3
- Outcome
- grain yielde3
- Direction
- highere3
- Value
- 4656 kg/hae3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“During the 2019/20 planting season, sorghum treated with ammonium sulphate nitrate, limestone ammonium nitrate and urea had a higher grain yield of 4656 kg/ha each”
Claim · model-written summary
Field condition had a significant effect on sorghum panicle mass and grain yield.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Field condition had a significant effect on sorghum panicle mass and grain yield during the 2018/19 and 2019/20 planting seasons”
Claim · model-written summary
Sorghum under irrigation had a higher panicle mass in 2018/19 (6316.53 kg/ha) than under rainfed conditions.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Sorghum planted under irrigation had a significantly higher panicle mass of 6316.53 and 6781.75 kg/ha during both planting seasons respectively”
e0“The main plots were two field conditions (irrigated and rainfed)”
Claim · model-written summary
Sorghum under irrigation had a higher panicle mass in 2019/20 (6781.75 kg/ha) than under rainfed conditions.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Sorghum planted under irrigation had a significantly higher panicle mass of 6316.53 and 6781.75 kg/ha during both planting seasons respectively”
e0“The main plots were two field conditions (irrigated and rainfed)”
Claim · model-written summary
Sorghum under irrigation had a higher grain yield in 2018/19 (4198.02 kg/ha) than under rainfed conditions.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Sorghum planted under irrigation had a significantly higher grain yield of 4198.02 and 4823.59 kg/ha during both planting seasons respectively”
e0“The main plots were two field conditions (irrigated and rainfed)”
Claim · model-written summary
Sorghum under irrigation had a higher grain yield in 2019/20 (4823.59 kg/ha) than under rainfed conditions.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Sorghum planted under irrigation had a significantly higher grain yield of 4198.02 and 4823.59 kg/ha during both planting seasons respectively”
e0“The main plots were two field conditions (irrigated and rainfed)”
Claim · model-written summary
No significant differences in sorghum yield parameters were found among the nitrogen sources.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Though no significant differences were observed amongst the nitrogen sources”
e1“sorghum treated with limestone ammonium nitrate showed a higher panicle mass of 6173.14 and 5979.08 kg/ha during the 2018/19 and 2019/20 planting seasons respectively”
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