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“dry weight decrease”

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Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The growth regulator treatments did not significantly decrease dry weight per stem.

Taxon: winter barleyHordeum vulgaree0
Treatment: mepiquat chloride and ethephone6
Outcome: dry weight/steme5
Direction: did not decrease significantlye5

Not reportedComparator

Verbatim

e0
“six cultivars of winter barley grown in Belfast, UK, in 1986/87”
✓ located verbatim in the source · abstract, characters 203–266

e5
“The growth regulator treatments reduced plant height and although dry weight/stem did not decrease significantly, dry weight/unit length of stem was similar in treated and untreated plots”
✓ located verbatim in the source · abstract, characters 939–1126

e6
“Applications of nitrogen and a plant growth regulator (mepiquat chloride and ethephon) were used to manipulate stem structure”
✓ located verbatim in the source · abstract, characters 8–133

Title

Response of winter barley cultivars to nitrogen and a plant growth regulator in relation to lodging

E. M. White The Journal of Agricultural Science 1991. doi:10.1017/s0021859600077583

Other claims from this paper (11)

Observation Pipkin had a very high lodging damage susceptibility index (70), while the other cultivars ranged from 1 to 18.
Association Differences between cultivars in number of internodes, plant height and stem weight did not explain their differences in resistance to damage.
Observation Panda had dry weight per unit length of 2·35 mg/mm, among the strongest cultivars.
Observation Jennifer had dry weight per unit length of 2·34 mg/mm, among the strongest cultivars.
Observation Pipkin had dry weight per unit length of 1·75 mg/mm, the lowest among the cultivars.
Intervention effect Nitrogen application increased plant height.
Intervention effect Nitrogen application did not affect dry weight per main stem.
Intervention effect Nitrogen application decreased dry weight per unit length of stem.
Intervention effect The growth regulator treatments reduced plant height.
Intervention effect Dry weight per unit length of stem was similar in growth-regulator-treated and untreated plots.
Recommendation Dry weight per unit length has potential as an objective indicator of straw strength and could be used in cultivar evaluation in the absence of damage in field trials.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Brushing typically had no significant effects on leaf area, dry weight or days to flower of pansy.

Taxon: Pansye0
Treatment: 10 or 20 brush strokes per daye0
Outcome: leaf area, dry weight or days to flowere0
Direction: without significant effectse0
Qualifier: typicallye0

Not reportedComparator

Verbatim

e0
“Pansy plants were undamaged by 10 or 20 brush strokes per day and showed a significant (17–22%) decrease in petiole length, typically without significant effects on leaf area, dry weight or days to flower.”
✓ located verbatim in the source · abstract, characters 1664–1869

Title

COMMERCIAL ADAPTATIONS OF MECHANICAL STIMULATION FOR THE CONTROL OF TRANSPLANT GROWTH

L. Garner; F. Allen Langton; T. Björkman Acta Horticulturae 1997. doi:10.17660/actahortic.1997.435.21

Other claims from this paper (13)

Intervention effect Ten or twenty daily strokes provided significant height control in tomato seedlings without plant damage.
Intervention effect Brushing intervals of up to 10 minutes gave the same height control in tomato as continuous brushing.
Intervention effect Treating tomato plants at 0800 or at 1700 hours produced no differences.
Intervention effect Brushing begun at the first or second true leaf stage achieved significant height control in tomato.
Intervention effect Brushing begun at a later stage of development caused leaf damage in tomato.
Intervention effect Brushing before transplanting to the field significantly decreased stem elongation of tomato by about 20%.
Intervention effect Brushed and unbrushed tomato plants showed no significant differences in long-term growth or final fruit yield after transplanting to the field.
Observation In geranium and impatiens, reductions in plant stature were associated with significant plant damage.
Intervention effect Brushing induced a prostrate growth habit and leaf distortion in petunia.
Intervention effect Brushing significantly reduced leaf area and shoot dry weight of petunia.
Intervention effect Pansy plants were undamaged by 10 or 20 brush strokes per day.
Intervention effect Brushing significantly decreased petiole length of pansy by 17–22%.
Recommendation Brushing is an effective method for controlling tomato and pansy transplant size without adversely affecting quality or long-term growth.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Cassava leaf area declined without a significant change in leaf dry weight.

Taxon: cassavaManihot esculentae0
Treatment: infested with P. manihotie2
Interactor: Phenacoccus manihotiPhenacoccus manihotie1pest
Outcome: leaf dry weighte0
Direction: without significant changee0

Not reportedComparator

Verbatim

e0
“In cassava the decrease in leaf area, without significant change in leaf dry weight, appeared to be due to physiological changes in plants similar to those induced by water stress.”
✓ located verbatim in the source · abstract, characters 894–1074

e1
“cassava mealybug Phenacoccus manihoti Matt. Ferr.”
✓ located verbatim in the source · abstract, characters 241–290

e2
“plants infested with P. manihoti”
✓ located verbatim in the source · abstract, characters 396–428

Title

Tolerance of different host‐plants to the cassava mealybugPhenacoccus manihotiMatile‐Ferrero (Homoptera: Pseudococcidae)

B. Le RÜ; M. Tertuliano International Journal of Pest Management 1993. doi:10.1080/09670879309371826

Other claims from this paper (5)

Intervention effect A two-month infestation by 100 mealybugs decreased host plant total leaf area and leaf area ratio.
Intervention effect Infestation did not modify plant total dry weight, relative growth rate or net assimilation rate.
Association The leaf area decrease varied by plant species and variety.
Intervention effect Infestation effects on dry weight differed among plant organs.
Association Tolerance to the mealybug was unrelated to plant species.

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