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“yield decrease”

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Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Maize growth was poor beyond 25 ppm of aluminium.

Taxon: maizeZea mayse0
Treatment: beyond 25 ppm of Ale5
Outcome: growthe5
Direction: decreaseinferrede5

Not reportedComparator

Verbatim

e0
“Solution: culture trials were carried out to study the influence of increasing doses of aluminium on the uptake of Al, P. Ma. Mn. Fe and dry matter yield of maize crop”
✓ located verbatim in the source · abstract, characters 0–167

e5
“Poor growth beyond 25 ppm of Al was clearly seen”
✓ located verbatim in the source · abstract, characters 526–574

Title

Effect of Various Levels of Aluminium on the Dry Matter Yield, Content and Uptake of Phosphorus, Aluminium, Manganese, Magnesium and Iron in Maize.

MATHAN K.K Madras Agricultural Journal 1980. doi:10.29321/maj.10.a02900

Other claims from this paper (7)

Intervention effect Excessive aluminium doses accumulated in maize roots.
Intervention effect Aluminium application enhanced P uptake by maize roots.
Mechanism Phosphorus appears to be precipitated with aluminium in maize roots.
Intervention effect Aluminium application did not change Al concentration in maize shoots.
Intervention effect Aluminium application gradually increased phosphorus concentration in maize shoots.
Mechanism Poor maize growth at high aluminium was partly due to direct injury of Al on the root hairs.
Mechanism Poor maize growth at high aluminium was partly due to poor uptake of Fe and Mn.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Grain yield losses from Avena fatua were significant when it remained in the barley crop until the crop had 2.5–4.5 leaves.

Taxon: spring barleyHordeum vulgaret0
Treatment: the wild oats remained in the crop until the crop had 2⋅5–4⋅5 leavese3
Interactor: Avena fatuaAvena fatuat0weed
Outcome: grain yield lossese3
Direction: decreaseinferrede3

Not reportedComparator

Verbatim

t0
“effects of various fractions of an Avena fatua L. population on spring barley”
✓ located verbatim in the source · title, characters 33–110

e3
“grain yield losses were significant if the wild oats remained in the crop until the crop had 2⋅5–4⋅5 leaves and 4⋅5–6⋅5 leaves respectively”
✓ located verbatim in the source · abstract, characters 902–1041

Title

Time of onset of competition and effects of various fractions of an Avena fatua L. population on spring barley

N.C.B. PETERS Weed Research 1984. doi:10.1111/j.1365-3180.1984.tb00592.x

Other claims from this paper (5)

Intervention effect Wild oats emerging at the 0–0.5 crop leaf stage caused a 16% barley yield loss in 1972.
Intervention effect Wild oats emerging at the 0.5–2.5 and 2.5–4 crop leaf stages caused non-significant barley yield losses.
Intervention effect Grain yield losses from Avena fatua were significant when it remained in the barley crop until the crop had 4.5–6.5 leaves.
Intervention effect Later-emerging Avena fatua did not compensate for early removal of earlier emergers by extra growth in barley.
Intervention effect Barley yield losses from Avena fatua occurred only when it remained in the crop until after the 6 leaf stage.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Seed advancement significantly increased final sugar yield by up to 0–7 t h ‐1 in three experiments.

Taxon: sugar beetBeta vulgaris subsp. vulgarise0
Treatment: Seed advancemente5
Outcome: final sugar yielde4
Direction: increasee4
Value: 0–7 t h ‐1e4
Qualifier: in three experimentse4

Not reportedComparator

Verbatim

e0
“The effect of seed advancement on the early growth of sugar beet was determined in two experiments made under controlled conditions and eight field experiments made between 1974 and 1978”
✓ located verbatim in the source · abstract, characters 8–194

e4
“in three experiments a significant increase in final sugar yield of up to 0–7 t h ‐1 was detected”
✓ located verbatim in the source · abstract, characters 627–724

e5
“Seed advancement did not decrease the plant stand or final yield in any experiments”
✓ located verbatim in the source · abstract, characters 862–945

Title

The use of water and some inorganic salt solutions to advance sugar beet seed. II. Experiments under controlled and field conditions

M. J. DURRANT; P. A. PAYNE; J. s. MCLAREN Annals of Applied Biology 1983. doi:10.1111/j.1744-7348.1983.tb02791.x

Other claims from this paper (10)

Intervention effect Seed advancement increased the rate of emergence and seedling dry weight across a wide range of soil moisture contents in growth-room experiments.
Intervention effect Seed advancement increased seedling numbers only under sub‐optimal soil moisture conditions.
Intervention effect Seed advancement resulted in more rapid emergence in most field experiments.
Intervention effect Seed advancement resulted in larger seedlings in most field experiments.
Intervention effect Seed advancement gave up to 16% more plants in four field experiments.
Intervention effect Seed advancement did not decrease plant stand or final yield in any experiment.
Intervention effect Seed advancement may reduce damage caused by field mice in sugar beet.
Intervention effect Seed advancement may reduce the number of sugar beet plants that bolt.
Association Seed advancement may be particularly beneficial on soils prone to slumping or capping.
Association Advanced seed used for early sowings may slightly increase the risk of frost injury in sugar beet.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Value reductions in Florigiant and NC 8C were $170 to $190/ha in 1980 and 1981 for each 10% CBR incidence.

Taxon: PeanutArachis hypogaeat0
Material: Florigiant and NC 8Ce3
Interactor: CylindrocladiumCalonectriae2pathogen
Outcome: value reductionse3
Direction: decreaseinferrede3
Value: $170 to $190/hae3
Qualifier: in 1980 and 1981e3

Verbatim

t0
“Peanut Yield”
✓ located verbatim in the source · title, characters 0–12

e3
“value reductions for Florigiant and NC 8C were from $170 to $190/ha in 1980 and 1981”
✓ located verbatim in the source · abstract, characters 730–814

e2
“The effects of Cylindrocladium black rot (CBR) of peanut (Arachis hypogaea L.)”
✓ located verbatim in the source · abstract, characters 9–87

Title

Peanut Yield, Market Quality and Value Reductions Due to Cylindrocladium Black Rot1,2

J. K. Pataky; M. K. Beute; J. C. Wynne; et al. Peanut Science 1983. doi:10.3146/i0095-3679-10-2-5

Other claims from this paper (9)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Dicamba reduced extractable sucrose per hectare.

Taxon: SugarbeetBeta vulgaris subsp. vulgarist0
Treatment: Dicamba at 0.14 kg ae/hae0
Outcome: extractable sucrose/hae0
Direction: decreasede0

Not reportedComparator

Verbatim

e0
“Dicamba at 0.14 kg ae/ha and 2,4-D at 0.28 kg ae/ha decreased extractable sucrose/ha and tended to decrease root yield at harvest while picloram at 0.028 kg ae/ha did not significantly reduce root yield or sucrose content at harvest compared to the control.”
✓ located verbatim in the source · abstract, characters 393–650

t0
“Sugarbeet”
✓ located verbatim in the source · title, characters 0–9

Title

Sugarbeet (Beta vulgarisL.) Response to Simulated Herbicide Spray Drift

Galen L. Schroeder; Darrell F. Cole; Alan G. Dexter Weed Science 1983. doi:10.1017/s004317450007082x

Other claims from this paper (12)

Intervention effect Early 2,4-D application tended to lower root yield.
Intervention effect Late 2,4-D application reduced purity by as much as 54%.
Intervention effect Late 2,4-D application reduced extractable sucrose content by as much as 54%.
Intervention effect 2,4-D reduced extractable sucrose per hectare.
Intervention effect Dicamba tended to reduce harvest root yield.
Intervention effect 2,4-D tended to reduce harvest root yield.
Intervention effect Picloram did not significantly reduce harvest root yield relative to control.
Intervention effect Picloram did not significantly reduce harvest sucrose content relative to control.
Intervention effect All tested 2,4-D rates increased sucrose losses in storage.
Intervention effect Dicamba caused comparable storage losses.
Intervention effect Picloram caused comparable storage losses.
Recommendation The authors recommend immediate processing after inadvertent herbicide drift exposure.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

On stubble, the yield increase per kilogram of nitrogen fell to 3.1 kg/ha when the N rate was raised from 45 to 60 kg N/ha.

Taxon: hard red spring wheate0
Treatment: increased from 45 to 60 kg N/hae5
Outcome: yield increase per kilogram of nitrogen per hectaree5
Direction: decreaseinferrede5
Value: 3.1 kg/hae5

Not reportedComparator

Verbatim

e0
“Fertilizer tests using hard red spring wheat (Triticum aestivum L.) were conducted in the field from 1967 to 1979 on stubble and fallow land”
✓ located verbatim in the source · abstract, characters 0–140

e5
“down to 3.1 kg/ha yield increase per kilogram of nitrogen per hectare when the rate of application was increased from 45 to 60 kg N/ha”
✓ located verbatim in the source · abstract, characters 924–1058

Title

FACTORS AFFECTING FERTILIZER RESPONSE OF WHEAT IN SOUTHWESTERN SASKATCHEWAN

D. W. L. READ; F. G. WARDER; D. R. CAMERON Canadian Journal of Soil Science 1982. doi:10.4141/cjss82-065

Other claims from this paper (7)

Intervention effect On fallow, nitrogen rates above 15 kg N/ha gave little significant yield increase.
Intervention effect The yield increase per kilogram of P applied decreased as the P application rate increased.
Intervention effect On stubble, the yield increase per kilogram of N applied decreased with each additional increment of N.
Association Soil and weather variables accounted for only 20% of the variability in yield on fallow crops.
Association Soil and weather variables accounted for only 40% of the variability in yield on stubble crops.
Intervention effect Nitrogen content of the grain was only increased by N rates of 45 kg N/ha or greater.
Intervention effect P content of the grain was decreased by both N and P fertilizer.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Treatment 2 produced more stem material than Treatment 1.

Taxon: ryegrass/clover pasturee1
Treatment: Treatment 2e0
Outcome: stem materiale0
Direction: moree0
Comparator: Treatment 1e0

Verbatim

e0
“Compared with Treatment 1, Treatment 2 did not show a significant decrease in DM production, but the sward which developed under Treatment 2 contained more stem material”
✓ located verbatim in the source · abstract, characters 612–781

e1
“The growth of ryegrass/clover pasture”
✓ located verbatim in the source · abstract, characters 9–46

Title

Factors influencing the yield and feeding value of pasture grown for conservation

J. A. Browse; R. M. Haslemore; R. Thaine New Zealand Journal of Crop and Horticultural Science 1984. doi:10.1080/03015521.1984.10427782

Other claims from this paper (16)

Observation Dry matter yield increased during growth within treatments.
Association Digestibility declined as dry matter yield increased.
Association Crude protein content declined as dry matter yield increased.
Intervention effect Treatment 2 did not significantly lower DM production relative to Treatment 1.
Intervention effect Treatment 2 digestibility was 3–12 percentage units lower than Treatment 1.
Intervention effect Treatment 2 reduced digestible dry matter yield by 15–40% relative to Treatment 1 at equal digestibility.
Observation At 70% digestibility, Treatment 2 yielded 4.8 t DM/ha per year.
Observation At 70% digestibility, Treatment 1 yielded 6.3 t DM/ha per year.
Intervention effect Treatment 3 produced a more vegetative sward than Treatments 1 and 2.
Intervention effect Treatment 3 lowered DM production relative to Treatments 1 and 2.
Intervention effect Treatment 3 lowered DDM production relative to Treatments 1 and 2.
Intervention effect Treatment 3 and Treatment 1 had similar digestibility for most of 1980–81.
Observation Late flowering Cynosurus in Treatment 3 increased early stem material in 1981–82.
Observation Digestibility was reduced in the 1981–82 Treatment 3 sward.
Observation After about 40 days, floral development completion in Treatment 3 prevented further digestibility decline.
Recommendation Early closing and cutting are recommended for high-quality conserved crops.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Wild oats emerging at the 0–0.5 crop leaf stage caused a 16% barley yield loss in 1972.

Taxon: spring barleyHordeum vulgaret0
Treatment: wild oats emerging in the 0–0⋅5e1
Interactor: Avena fatuaAvena fatuat0weed
Outcome: yield lossese2
Direction: decreaseinferrede2
Value: 16%e2

Not reportedComparator

Verbatim

t0
“effects of various fractions of an Avena fatua L. population on spring barley”
✓ located verbatim in the source · title, characters 33–110

e1
“wild oats emerging in the 0–0⋅5, 0⋅5–2⋅5, 2⋅5–4 crop leaf stages at densities of 54, 46, 15 m −2 respectively were allowed to compete all season with the crcp”
✓ located verbatim in the source · abstract, characters 223–381

e2
“caused 16%, and two non‐significant yield losses respectively”
✓ located verbatim in the source · abstract, characters 437–498

Title

Time of onset of competition and effects of various fractions of an Avena fatua L. population on spring barley

N.C.B. PETERS Weed Research 1984. doi:10.1111/j.1365-3180.1984.tb00592.x

Other claims from this paper (5)

Intervention effect Wild oats emerging at the 0.5–2.5 and 2.5–4 crop leaf stages caused non-significant barley yield losses.
Intervention effect Grain yield losses from Avena fatua were significant when it remained in the barley crop until the crop had 2.5–4.5 leaves.
Intervention effect Grain yield losses from Avena fatua were significant when it remained in the barley crop until the crop had 4.5–6.5 leaves.
Intervention effect Later-emerging Avena fatua did not compensate for early removal of earlier emergers by extra growth in barley.
Intervention effect Barley yield losses from Avena fatua occurred only when it remained in the crop until after the 6 leaf stage.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

GA induced stem elongation and thinning.

Taxon: Kidney BeansPhaseolus vulgarist0
Treatment: GAe0
Outcome: stem elongation and thinninge0
Direction: elongatione0

Not reportedComparator

Verbatim

e0
“GA induced stem elongation and thinning through cell elongation and decrease of both of ground tissue cell‐size and vascular cylinder cell layers in the stem.”
✓ located verbatim in the source · abstract, characters 202–360

t0
“Kidney Beans (Phaseolus vulgaris L.)”
✓ located verbatim in the source · title, characters 73–109

Title

Effect of GA, CCC and B‐9 on Morphophysiological Characters and Yield of Kidney Beans (Phaseolus vulgaris L.)

M. M. El‐Fouly; R. Sakr; M. K. Fouad; et al. Journal of Agronomy and Crop Science 1988. doi:10.1111/j.1439-037x.1988.tb00301.x

Other claims from this paper (15)

Intervention effect GA caused cell elongation and reduced ground tissue cell size and vascular cylinder layers.
Intervention effect CCC shortened and thickened bean stems.
Intervention effect B-9 shortened and thickened bean stems.
Intervention effect CCC and B-9 increased cell layers and widened the stem vascular cylinder.
Intervention effect CCC and B-9 increased leaf area more than GA.
Intervention effect GA increased amylase activity.
Intervention effect GA had no effect on invertase.
Intervention effect CCC and B-9 mostly decreased amylase activity.
Intervention effect CCC and B-9 increased invertase activity.
Intervention effect GA increased seeds per pod.
Intervention effect CCC increased seeds per pod.
Intervention effect B-9 did not change seeds per pod.
Intervention effect CCC increased pod number, specific seed weight and seed yield per plant.
Intervention effect B-9 increased pod number, specific seed weight and seed yield per plant.
Intervention effect GA did not affect pod number, specific seed weight or seed yield per plant.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Harvesting all forages at the stem elongation stage substantially reduced yield of DM, IVDMD and CP.

Taxon: timothy, tall fescue, reed canarygrass and Kentucky bluegrasse0
Treatment: Harvesting all forages at the stem elongation stagee5
Outcome: yield of DM, IVDMD and CPe5
Direction: reducede5

Not reportedComparator

Verbatim

e0
“In vitro dry matter digestibility (IVDMD) values ranged from above 80% down to 45%, with an average rate of decrease during June of 0.74, 0.84, 0.85 and 0.45% per day in timothy, tall fescue, reed canarygrass and Kentucky bluegrass, respectively”
✓ located verbatim in the source · abstract, characters 355–600

e5
“Harvesting all forages at the stem elongation stage substantially reduced the yield of DM, IVDMD and CP”
✓ located verbatim in the source · abstract, characters 1249–1352

Title

EFFECTS OF INITIAL HARVEST DATE ON DRY MATTER YIELD, IN VITRO DRY MATTER DIGESTIBILITY AND PROTEIN IN TIMOTHY, TALL FESCUE, REED CANARYGRASS AND KENTUCKY BLUEGRASS

W. MASON; L. LACHANCE Canadian Journal of Plant Science 1983. doi:10.4141/cjps83-085

Other claims from this paper (17)

Observation Timothy IVDMD decreased on average by 0.74% per day during June.
Observation Tall fescue IVDMD decreased on average by 0.84% per day during June.
Observation Reed canarygrass IVDMD decreased on average by 0.85% per day during June.
Observation Kentucky bluegrass IVDMD decreased on average by 0.45% per day during June.
Observation Timothy crude protein in first-cut forage decreased by 0.47% per day.
Observation Tall fescue crude protein in first-cut forage decreased by 0.40% per day.
Observation Reed canarygrass crude protein in first-cut forage decreased by 0.39% per day.
Observation Kentucky bluegrass crude protein in first-cut forage decreased by 0.28% per day.
Observation Regrowth forage in midsummer and fall harvests averaged 63 to 59% IVDMD.
Observation Regrowth forage in midsummer and fall harvests averaged 16 to 20% CP.
Intervention effect Delaying the initial cut continued to increase total annual dry matter yield, except in reed canarygrass.
Intervention effect Delaying the initial cut significantly increased total IVDMD yield until flowering.
Intervention effect Delaying the initial cut decreased total CP yield from stem elongation onwards.
Observation Reed canarygrass reached its optimum CP yield at early heading.
Observation Reed canarygrass had significant increases in IVDMD yield until the flowering stage.
Observation Most of the DM was obtained in the initial harvest.
Observation Almost half of the total CP was obtained in the final harvest.

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“yield decrease”

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