Abstract
Abstract Information about responses of plants in general, and of tomato ( Lycopersicum esculentum Mill.) in particular, to various trickle‐irrigated soil volumes is meager. This information is essential in planning water rates and geometries and in scheduling drip irrigation systems. Our objective was to study root development and distribution in a sandy soil in the field under three trickle irrigation regimes; yields, dry matter production, water and N content in the root zone and N uptake by the tomato were all evaluated in relation to root development. Irrigation frequency increases from one to three irrigations per day produced a significant increase in dry matter yield, but decreased fresh fruit yield. A seasonal application of 620 mm compared to 320 mm, both applied as one irrigation per day, did not increase dry fruit yield, but increased fresh fruit yield by a factor of 1.46. The main factor that contributed to the different response of the plants to the irrigation treatments, was the root weight and distribution in the soil during the growth period. In the once‐a‐day irrigation treatments, the root weight declined at the time of fruit filling, which caused a delay in production, while when irrigating three times a day, that decrease was not observed, and fruit dry matter production occurred at a higher rate. This response produced a greater final dry matter yield. In all the treatments the rapid fruit filling period was followed by a 55‐day period of slow dry matter production, which, in turn, was followed by an enhanced production rate.
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Claims 8
Claim · model-written summary
Increasing irrigation frequency from one to three irrigations per day significantly increased dry matter yield in tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Irrigation frequencye1
- Outcome
- dry matter yielde1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of tomato ( Lycopersicum esculentum Mill.) in particular”
e1“Irrigation frequency increases from one to three irrigations per day produced a significant increase in dry matter yield”
Claim · model-written summary
Increasing irrigation frequency decreased fresh fruit yield in tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Irrigation frequencye1
- Outcome
- fresh fruit yielde1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of tomato ( Lycopersicum esculentum Mill.) in particular”
e1“Irrigation frequency increases from one to three irrigations per day produced a significant increase in dry matter yield, but decreased fresh fruit yield”
Claim · model-written summary
A seasonal application of 620 mm did not increase dry fruit yield compared with 320 mm, both applied as one irrigation per day.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- seasonal application of 620 mme2
- Outcome
- dry fruit yielde2
- Direction
- did not increasee2
- Comparator
- 320 mme2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of tomato ( Lycopersicum esculentum Mill.) in particular”
e2“A seasonal application of 620 mm compared to 320 mm, both applied as one irrigation per day, did not increase dry fruit yield, but increased fresh fruit yield by a factor of 1.46”
Claim · model-written summary
A seasonal application of 620 mm increased fresh fruit yield by a factor of 1.46 compared with 320 mm.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- seasonal application of 620 mme2
- Outcome
- fresh fruit yielde2
- Direction
- increasede2
- Value
- a factor of 1.46e2
- Comparator
- 320 mme2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of tomato ( Lycopersicum esculentum Mill.) in particular”
e2“A seasonal application of 620 mm compared to 320 mm, both applied as one irrigation per day, did not increase dry fruit yield, but increased fresh fruit yield by a factor of 1.46”
Claim · model-written summary
Root weight declined at the time of fruit filling under once-a-day irrigation.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- root weighte3
- Qualifier
- declined at the time of fruit fillinge3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of tomato ( Lycopersicum esculentum Mill.) in particular”
e3“In the once‐a‐day irrigation treatments, the root weight declined at the time of fruit filling, which caused a delay in production”
Claim · model-written summary
Irrigating three times a day avoided the root weight decline and gave fruit dry matter production at a higher rate.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- fruit dry matter productione4
- Qualifier
- occurred at a higher ratee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of tomato ( Lycopersicum esculentum Mill.) in particular”
e4“when irrigating three times a day, that decrease was not observed, and fruit dry matter production occurred at a higher rate”
Claim · model-written summary
Irrigating three times a day produced a greater final dry matter yield.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- irrigating three times a daye4
- Outcome
- final dry matter yielde5
- Direction
- greatere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of tomato ( Lycopersicum esculentum Mill.) in particular”
e4“when irrigating three times a day, that decrease was not observed, and fruit dry matter production occurred at a higher rate”
e5“This response produced a greater final dry matter yield”
Claim · model-written summary
After the rapid fruit filling period, all treatments had a period of slow dry matter production followed by an enhanced production rate.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- dry matter productione6
- Qualifier
- period of slow dry matter productione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of tomato ( Lycopersicum esculentum Mill.) in particular”
e6“period of slow dry matter production, which, in turn, was followed by an enhanced production rate”
The same questions in other papers
irrigation · yield · Solanum lycopersicum (tomato)Positive and negative results
238 papers in the same direction as this paper · 98 in the opposite direction · 7 reporting no difference from an alternative
- negative
- no effect
- positive
340 papers more in this group
See all 344 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.