Abstract
Abstract Greenhouse experiments were conducted to study the influence of K on CO 2 assimilation, growth, and morphological characteristics of alfalfa ( Medicago sativa L.). Yield increases were consistently obtained with high K. Added K increased plant height. The rate of leaf accumulation, leaf size, and weight per unit area also increased as did stomatal number and aperture. More and larger epidermal cells per leaf were observed with high K nutrition. Net photosynthesis rates of excised leaves increased with K application. Leaves from plants with added K had lower CO 2 compensation points, indicating higher efficiency of CO 2 assimilation under limiting CO 2 conditions.
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Claims 7
Claim · model-written summary
High potassium consistently increased alfalfa yield.
- Taxon
- Alfalfa
Medicago sativat0 - Treatment
- high Ke0
- Outcome
- Yielde0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“Yield increases were consistently obtained with high K”
Claim · model-written summary
Added potassium increased plant height.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Added Ke0
- Outcome
- plant heighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“Added K increased plant height”
Claim · model-written summary
Added potassium increased leaf accumulation, leaf size and weight per unit area.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Ke1
- Outcome
- rate of leaf accumulation, leaf size, and weight per unit areae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“The rate of leaf accumulation, leaf size, and weight per unit area also increased”
e1“Yield increases were consistently obtained with high K”
Claim · model-written summary
Added potassium increased stomatal number and aperture.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Ke1
- Outcome
- stomatal number and aperturee0
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“stomatal number and aperture”
e1“Yield increases were consistently obtained with high K”
Claim · model-written summary
High potassium produced more and larger epidermal cells per leaf.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- high K nutritione0
- Outcome
- epidermal cells per leafe0
- Direction
- More and largere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“More and larger epidermal cells per leaf were observed with high K nutrition”
Claim · model-written summary
Potassium application increased net photosynthesis of excised leaves.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- K applicatione0
- Outcome
- Net photosynthesis ratese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“Net photosynthesis rates of excised leaves increased with K application”
Claim · model-written summary
Added potassium lowered the CO 2 compensation point of leaves.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- added Ke0
- Outcome
- CO 2 compensation pointse0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“Leaves from plants with added K had lower CO 2 compensation points”
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See all 9 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.