Abstract
Abstract The development of an extensive root system enables plants to overcome water stress. However, there is little information on the response of food legumes to soil moisture, especially during early growth, which determines crop establishment. Thus, an experiment was conducted under controlled conditions to identify the effect of soil moisture and fertilizer potassium on root and shoot growth of french beans ( Phaseolus vulgaris L.) seedlings. The seedlings were grown in a sand medium under a high and low soil moisture regime and with 0.1, 0.8 or 3.0 mM potassium. Root lengths, dry weights and numbers of root hairs were greater under low soil moisture conditions. Potassium increased root growth irrespective of soil moisture regimes. The impact of potassium on root length was more pronounced under a high soil moisture regime. In contrast, potassium increased root dry weights and root hairs to a greater extent when plants were grown under dry conditions. The lack of adequate soil moisture increased specific leaf weights, and this phenomenon was reduced by the application of potassium. Shoot:root ratios also showed a similar phenomenon. The development of an extensive root system by french bean seedlings under dry conditions to extract a greater quantity of available soil moisture fur establishment and plant growth and the ability of potassium to promote this phenomenon is presented in this study.
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Claims 8
Claim · model-written summary
Low soil moisture increased root length, dry weight and root hair number.
- Taxon
- french beans
Phaseolus vulgarist0 - Treatment
- low soil moisture conditionse0
- Outcome
- Root lengths, dry weights and numbers of root hairse0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root lengths, dry weights and numbers of root hairs were greater under low soil moisture conditions.”
t0“French Beans”
Claim · model-written summary
Potassium increased root growth under both soil moisture regimes.
- Taxon
- french beansPhaseolus vulgarist0
- Treatment
- Potassiume0
- Outcome
- root growthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium increased root growth irrespective of soil moisture regimes.”
t0“French Beans”
Claim · model-written summary
Potassium affected root length more under high soil moisture.
- Taxon
- french beansPhaseolus vulgarist0
- Treatment
- potassiume0
- Outcome
- root lengthe0
- Direction
- more pronouncede0
- Qualifier
- high soil moisture regimee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The impact of potassium on root length was more pronounced under a high soil moisture regime.”
t0“French Beans”
Claim · model-written summary
Potassium increased root dry weight more under dry conditions.
- Taxon
- french beansPhaseolus vulgarist0
- Treatment
- potassiume0
- Outcome
- root dry weightse0
- Direction
- increasede0
- Qualifier
- dry conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium increased root dry weights and root hairs to a greater extent when plants were grown under dry conditions.”
t0“French Beans”
Claim · model-written summary
Potassium increased root hairs more under dry conditions.
- Taxon
- french beansPhaseolus vulgarist0
- Treatment
- potassiume0
- Outcome
- root hairse0
- Direction
- increasede0
- Qualifier
- dry conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium increased root dry weights and root hairs to a greater extent when plants were grown under dry conditions.”
t0“French Beans”
Claim · model-written summary
Inadequate soil moisture increased specific leaf weight.
- Taxon
- french beansPhaseolus vulgarist0
- Treatment
- lack of adequate soil moisturee0
- Outcome
- specific leaf weightse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lack of adequate soil moisture increased specific leaf weights”
t0“French Beans”
Claim · model-written summary
Potassium reduced the moisture-associated rise in specific leaf weight.
- Taxon
- french beansPhaseolus vulgarist0
- Treatment
- application of potassiume0
- Outcome
- this phenomenone0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this phenomenon was reduced by the application of potassium.”
t0“French Beans”
Claim · model-written summary
Shoot:root ratios showed a similar response to moisture and potassium.
- Taxon
- french beansPhaseolus vulgarist0
- Outcome
- Shoot:root ratiose0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot:root ratios also showed a similar phenomenon.”
t0“French Beans”
The same questions in other papers
soil water · growth · Phaseolus vulgaris (common bean)Positive and negative results
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- negative
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See all 8 papers →potassium · growth · Phaseolus vulgaris (common bean)Positive and negative results
15 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
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See all 17 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.