Abstract
The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997 were evaluated under three tillage practices. On 25 Apr. 1997, `Champ' and `Sensor' seeds were sown on 0.76-m row centers of 4.6 x 91-m (12 x 300-ft) plots which had been in continuous conventional (CT), minimum tillage (MT), and/or no tillage (NT) since Aug. 1994. All production inputs were similar except tillage practice. Ears were harvested beginning 16 Jun 1997. Cultivars differed in leaf greenness, plant stand ( P < 0.11), ear diameter, length, and dry matter, percentage of total yield at first harvest, season yield, and ears/ha. `Sensor' ears had higher concentrations (dry-mass basis) of total N, K, S, NO 3 , and B, but lower concentrations of Mg ( P < 0.06), Ca, Fe, and Mn than did `Champ'. Amaranthus spp. weed populations were higher in `Champ' then in `Sensor' tillage treatments. MT and CT resulted in greater ear attributes, yield, ears/ha, and less corn earworm damage, lower ear S concentrations, and fewer total weeds/ha than corn grown with NT. Plant stand was highest in CT plots. Weed populations of Panicum and Amaranthus spp., but not Texas tridens [ Tridens texanus (S. Wats.) Nash] or common purslane ( Portulaca oleracea L.), were higher in NT-grown corn than MT- or CT-grown corn.
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Claims 15
Claim · model-written summary
Sweet corn cultivars differed in leaf greenness and plant stand.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“Cultivars differed in leaf greenness, plant stand ( P < 0.11), ear diameter, length, and dry matter, percentage of total yield at first harvest, season yield, and ears/ha”
Claim · model-written summary
Sweet corn cultivars differed in ear diameter, ear length and ear dry matter.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“Cultivars differed in leaf greenness, plant stand ( P < 0.11), ear diameter, length, and dry matter, percentage of total yield at first harvest, season yield, and ears/ha”
Claim · model-written summary
Sweet corn cultivars differed in percentage of total yield at first harvest, season yield and ears per hectare.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“Cultivars differed in leaf greenness, plant stand ( P < 0.11), ear diameter, length, and dry matter, percentage of total yield at first harvest, season yield, and ears/ha”
Claim · model-written summary
One sweet corn cultivar had higher ear concentrations of total N, K and S.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e2“ears had higher concentrations (dry-mass basis) of total N, K, S, NO 3 , and B”
Claim · model-written summary
One sweet corn cultivar had higher ear concentrations of NO3 and B.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e2“ears had higher concentrations (dry-mass basis) of total N, K, S, NO 3 , and B”
Claim · model-written summary
One sweet corn cultivar had lower ear Mg concentration.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e2“lower concentrations of Mg ( P < 0.06), Ca, Fe, and Mn”
Claim · model-written summary
One sweet corn cultivar had lower ear Ca, Fe and Mn concentrations.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e2“lower concentrations of Mg ( P < 0.06), Ca, Fe, and Mn”
Claim · model-written summary
Amaranthus weed populations were higher under one sweet corn cultivar than the other.
- Taxon
- sweet corne0
- Interactor
- Amaranthus spp.
_with_green_foliage%2C_photographed_in_Tamil_Nadu%2C_India.jpg?width=60)
Amaranthuse1weed - Outcome
- weed populationse1
- Direction
- highere1
- Setting
- Rio Grande Valley in Spring 1997e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_with_green_foliage%2C_photographed_in_Tamil_Nadu%2C_India.jpg?width=500)
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“Amaranthus spp. weed populations were higher”
Claim · model-written summary
MT and CT tillage gave greater ear attributes, yield and ears per hectare than NT.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“MT and CT resulted in greater ear attributes, yield, ears/ha”
e2“than corn grown with NT”
Claim · model-written summary
MT and CT tillage gave less corn earworm damage than NT.
- Taxon
- sweet corne0
- Treatment
- MT and CTe1
- Interactor
- corn earworm
.jpg?width=60)
Helicoverpa zeae3pest - Outcome
- corn earworm damagee3
- Direction
- lesse3
- Comparator
- corn grown with NTe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“MT and CT resulted in greater ear attributes, yield, ears/ha”
e2“than corn grown with NT”
e3“less corn earworm damage”
Claim · model-written summary
MT and CT tillage gave lower ear S concentrations than NT.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“MT and CT resulted in greater ear attributes, yield, ears/ha”
e2“than corn grown with NT”
e3“lower ear S concentrations”
Claim · model-written summary
MT and CT tillage gave fewer total weeds per hectare than NT.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“MT and CT resulted in greater ear attributes, yield, ears/ha”
e2“than corn grown with NT”
e3“fewer total weeds/ha”
Claim · model-written summary
Plant stand was highest in CT plots.
Not reportedComparator
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“Plant stand was highest in CT plots”
Claim · model-written summary
Panicum and Amaranthus weed populations were higher in NT-grown corn than in MT- or CT-grown corn.
- Taxon
- sweet corne0
- Treatment
- NT-grown corne2
- Second interactor
- Amaranthus spp.Amaranthuse1weed
- Outcome
- Weed populationse1
- Direction
- highere2
- Comparator
- MT- or CT-grown corne2
PanicumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“Weed populations of Panicum and Amaranthus spp.”
e2“were higher in NT-grown corn than MT- or CT-grown corn”
Claim · model-written summary
Texas tridens and common purslane weed populations were not higher in NT-grown corn than in MT- or CT-grown corn.
Verbatim
e0“The performance of two sweet corn (Zea mays var. saccharata) cultivars grown in the Rio Grande Valley in Spring 1997”
e1“Weed populations of Panicum and Amaranthus spp., but not Texas tridens [ Tridens texanus (S. Wats.) Nash] or common purslane ( Portulaca oleracea L.), were higher in NT-grown corn”
The same questions in other papers
Zea mays subsp. mays · Panicum · Zea mays (maize)Positive and negative results
1 in the opposite direction
- positive
tillage · weed · Zea mays (maize)Positive and negative results
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- negative
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See all 111 papers →tillage · yield · Zea mays (maize)Positive and negative results
811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative
- no effect
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1,095 papers more in this group
See all 1,099 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.