Abstract
The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters under raised bed and drip irrigation systems were examined. Three irrigation frequencies (every 2, 4 or 6 days) and three levels of irrigation water quality (good, marginal and poor) were applied using the high-efficiency drip irrigation system and raised bed systems. The parameters measured were germination rate, plant height, total dry matter (TDM), and grain yield (GY). The data were statistically investigated to assess the importance of irrigation frequency and water quality. The effects of irrigation frequency on plant height were observed to be statistically significant. Plant height reduced with an increase in irrigation frequency from every 2 to every 4 days, but increased with a further increase in irrigation frequency from every 4 to every 6 days. The raised bed irrigation system demonstrated better performance than the drip irrigation system; plant height, biological yield and maize yield in the former system were 1%, 5% and 21% higher, respectively, than in the latter. The main effect of irrigation frequency on the TDM weight was statistically significant, suggesting that the irrigation frequency had a clearcut effect on TDM weight. The vigorous crop growth in those plots irrigated using the raised bed irrigation system is likely to be due to salts being removed from the crop root zone through leaching. Despite this, the raised bed irrigation system is not preferred over drip irrigation as it uses more irrigation water in crop production.
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Claims 10
Claim · model-written summary
Irrigation frequency had a statistically significant effect on maize plant height.
Zea maysNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e1“The effects of irrigation frequency on plant height were observed to be statistically significant”
Claim · model-written summary
Plant height decreased when irrigation frequency increased from every 2 to every 4 days.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e2“Plant height reduced with an increase in irrigation frequency from every 2 to every 4 days”
Claim · model-written summary
Plant height increased when irrigation frequency increased from every 4 to every 6 days.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e2“Plant height reduced with an increase in irrigation frequency from every 2 to every 4 days”
e3“but increased with a further increase in irrigation frequency from every 4 to every 6 days”
Claim · model-written summary
Raised bed irrigation gave 1% higher maize plant height than drip irrigation.
- Treatment
- raised bed irrigation systeme4
- Outcome
- plant heighte4
- Direction
- highere4
- Value
- 1%e4
- Comparator
- drip irrigation systeme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e4“The raised bed irrigation system demonstrated better performance than the drip irrigation system; plant height, biological yield and maize yield in the former system were 1%, 5% and 21% higher, respectively, than in the latter”
Claim · model-written summary
Raised bed irrigation gave 5% higher maize biological yield than drip irrigation.
- Treatment
- raised bed irrigation systeme4
- Outcome
- biological yielde4
- Direction
- highere4
- Value
- 5%e4
- Comparator
- drip irrigation systeme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e4“The raised bed irrigation system demonstrated better performance than the drip irrigation system; plant height, biological yield and maize yield in the former system were 1%, 5% and 21% higher, respectively, than in the latter”
Claim · model-written summary
Raised bed irrigation gave 21% higher maize grain yield than drip irrigation.
- Treatment
- raised bed irrigation systeme4
- Outcome
- maize yielde4
- Direction
- highere4
- Value
- 21%e4
- Comparator
- drip irrigation systeme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e4“The raised bed irrigation system demonstrated better performance than the drip irrigation system; plant height, biological yield and maize yield in the former system were 1%, 5% and 21% higher, respectively, than in the latter”
Claim · model-written summary
Irrigation frequency had a statistically significant main effect on maize total dry matter weight.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e5“The main effect of irrigation frequency on the TDM weight was statistically significant”
Claim · model-written summary
Vigorous maize growth in the raised bed plots is likely due to salts being leached from the root zone.
- Treatment
- raised bed irrigation systeme6
- Outcome
- vigorous crop growthe6
- Qualifier
- salts being removed from the crop root zone through leachinge6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e6“The vigorous crop growth in those plots irrigated using the raised bed irrigation system is likely to be due to salts being removed from the crop root zone through leaching”
Claim · model-written summary
The authors do not recommend raised bed irrigation over drip irrigation for maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e7“the raised bed irrigation system is not preferred over drip irrigation as it uses more irrigation water in crop production”
Claim · model-written summary
Raised bed irrigation used more irrigation water than drip irrigation in maize production.
- Treatment
- raised bed irrigation systeme7
- Outcome
- irrigation watere7
- Direction
- moree7
- Comparator
- drip irrigatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of different irrigation frequencies and levels of water quality on maize yield and growth parameters”
e7“the raised bed irrigation system is not preferred over drip irrigation as it uses more irrigation water in crop production”
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