Abstract
Water is one of yield limiting factor in most crop production. Although sorghum is known to be drought tolerant, the tolerance limit has been reported to vary depending on variety and whether the crop is meant for grain, fodder or bioethanol. Therefore, the current study examined the effects of three water regimes on growth and yields of two sorghum varieties (Seredo and Machakos local red) in the field for two cycles. The treatments were laid out in Randomized Complete Block Design in factorial arrangement and replicated three times. Growth parameters such as plant height and shoot biomass were measured. Also, the study determined yield and nutrient uptake. The results revealed that low soil water content significantly affected the growth of the two varieties of Sorghum. Machakos local red was the tallest (210.9 cm), while the Seredo variety had the greatest shoot biomass (133.0 g). Besides, the highest growth of the two sorghum varieties was achieved at 60% water regime. Seredo variety under 40% water regime recorded the maximum grain yield (3.23 tha-1), Phosphorus (60.3 kg P ha-1), and Nitrogen (25.2 kg Nha-1). Furthermore, Seredo variety recorded the highest harvest index (0.43). The study revealed that low soil moisture content significantly declined sorghum plant growth, yield and yield components, phosphorus, and nitrogen concentration uptake of the two varieties. Plant growth was the highest underwater 60 % water regime, with Machakos local red variety having higher plant height, while Seredo was superior in shoot biomass. Seredo accumulated the highest yield, and also had the highest P and N uptake under 40% watering regime. The results showed that optimal watering regime does not significantly reduce sorghum growth, yields and nutrient uptake yet save on water. Therefore, the study recommends farmers growing sorghum in marginal areas to adopt to optimal watering regime.
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Claims 12
Claim · model-written summary
Low soil moisture content significantly reduced sorghum plant growth.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low soil moisture content significantly declined sorghum plant growth”
t0“SORGHUM”
Claim · model-written summary
Low soil moisture content significantly reduced sorghum yield and yield components.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low soil moisture content significantly declined sorghum plant growth, yield and yield components”
Claim · model-written summary
Low soil moisture content significantly reduced sorghum phosphorus and nitrogen uptake.
- Treatment
- low soil moisture contente0
- Outcome
- phosphorus, and nitrogen concentration uptakee0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low soil moisture content significantly declined sorghum plant growth, yield and yield components, phosphorus, and nitrogen concentration uptake”
Claim · model-written summary
The Machakos local red sorghum variety was the tallest, at 210.9 cm.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Machakos local red was the tallest (210.9 cm), while the Seredo variety had the greatest shoot biomass (133.0 g)”
t0“SORGHUM”
Claim · model-written summary
The Seredo sorghum variety had the greatest shoot biomass, at 133.0 g.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Machakos local red was the tallest (210.9 cm), while the Seredo variety had the greatest shoot biomass (133.0 g)”
t0“SORGHUM”
Claim · model-written summary
The highest growth of the two sorghum varieties was achieved at the 60% water regime.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest growth of the two sorghum varieties was achieved at 60% water regime”
Claim · model-written summary
Seredo sorghum under the 40% water regime recorded the maximum grain yield, 3.23 t/ha.
- Material
- Seredoe0
- Treatment
- 40% water regimee0
- Outcome
- maximum grain yielde0
- Direction
- maximume0
- Value
- 3.23 tha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seredo variety under 40% water regime recorded the maximum grain yield (3.23 tha-1), Phosphorus (60.3 kg P ha-1), and Nitrogen (25.2 kg Nha-1)”
t0“SORGHUM”
Claim · model-written summary
Seredo sorghum under the 40% water regime recorded the maximum phosphorus uptake, 60.3 kg P/ha.
- Material
- Seredoe0
- Treatment
- 40% water regimee0
- Outcome
- Phosphoruse0
- Direction
- maximume0
- Value
- 60.3 kg P ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seredo variety under 40% water regime recorded the maximum grain yield (3.23 tha-1), Phosphorus (60.3 kg P ha-1), and Nitrogen (25.2 kg Nha-1)”
t0“SORGHUM”
Claim · model-written summary
Seredo sorghum under the 40% water regime recorded the maximum nitrogen uptake, 25.2 kg N/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seredo variety under 40% water regime recorded the maximum grain yield (3.23 tha-1), Phosphorus (60.3 kg P ha-1), and Nitrogen (25.2 kg Nha-1)”
t0“SORGHUM”
Claim · model-written summary
The Seredo sorghum variety recorded the highest harvest index, 0.43.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seredo variety recorded the highest harvest index (0.43)”
t0“SORGHUM”
Claim · model-written summary
An optimal watering regime did not significantly reduce sorghum growth, yields and nutrient uptake while saving water.
- Treatment
- optimal watering regimee0
- Outcome
- sorghum growth, yields and nutrient uptakee0
- Direction
- does not significantly reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimal watering regime does not significantly reduce sorghum growth, yields and nutrient uptake”
Claim · model-written summary
The authors recommend that farmers growing sorghum in marginal areas adopt an optimal watering regime.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“recommends farmers growing sorghum in marginal areas to adopt to optimal watering regime”
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