Abstract
Abstract Squash, cv Dixie, grown on a Lakeland sand was subjected to factorial combinations of 3 tillage systems and 2 N application methods during 1979 and 1980. Fruit yield was greatest with a combination of moldboard plow tillage and application of 22 kg N/ha preplant and 18 kg/ha increments of N by fertigation 2, 3, 4, 5 and 6 weeks after planting. Plant growth and nutrient uptake were greatest and N available for potential contamination of the ground‐water was least with subsoil‐bed tillage and N application by fertigation. Disc harrow tillage with 67 kg N/ha preplant and 45 kg N/ha 4 weeks after planting resulted in 42% less yield, 61% less plant growth, 29 to 64% less nutrient uptake and more than 5 times as much N available for potential contamination of the groundwater as the best practices.
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Claims 8
Claim · model-written summary
Moldboard plowing with staged nitrogen fertigation gave greatest fruit yield.
- Taxon
- Squasht0
- Treatment
- moldboard plow tillage and application of 22 kg N/ha preplant and 18 kg/ha increments of N by fertigatione0
- Outcome
- Fruit yielde0
- Direction
- greateste0
Not reportedComparator
Verbatim
e0“Fruit yield was greatest with a combination of moldboard plow tillage and application of 22 kg N/ha preplant and 18 kg/ha increments of N by fertigation 2, 3, 4, 5 and 6 weeks after planting”
t0“squash”
Claim · model-written summary
Subsoil-bed tillage with fertigation gave greatest plant growth.
- Taxon
- Squasht0
- Treatment
- subsoil‐bed tillage and N application by fertigatione0
- Outcome
- Plant growthe0
- Direction
- greateste0
Not reportedComparator
Verbatim
e0“Plant growth and nutrient uptake were greatest and N available for potential contamination of the ground‐water was least with subsoil‐bed tillage and N application by fertigation”
t0“squash”
Claim · model-written summary
Subsoil-bed tillage with fertigation gave greatest nutrient uptake.
- Taxon
- Squasht0
- Treatment
- subsoil‐bed tillage and N application by fertigatione0
- Outcome
- nutrient uptakee0
- Direction
- greateste0
Not reportedComparator
Verbatim
e0“Plant growth and nutrient uptake were greatest and N available for potential contamination of the ground‐water was least with subsoil‐bed tillage and N application by fertigation”
t0“squash”
Claim · model-written summary
Subsoil-bed tillage with fertigation left least nitrogen available for groundwater contamination.
- Taxon
- Squasht0
- Treatment
- subsoil‐bed tillage and N application by fertigatione0
- Outcome
- N available for potential contamination of the ground‐watere0
- Direction
- leaste0
Not reportedComparator
Verbatim
e0“Plant growth and nutrient uptake were greatest and N available for potential contamination of the ground‐water was least with subsoil‐bed tillage and N application by fertigation”
t0“squash”
Claim · model-written summary
Disc harrow with staged nitrogen application reduced yield by 42% versus best practices.
Verbatim
e0“Disc harrow tillage with 67 kg N/ha preplant and 45 kg N/ha 4 weeks after planting resulted in 42% less yield, 61% less plant growth, 29 to 64% less nutrient uptake and more than 5 times as much N available for potential contamination of the groundwater as the best practices”
t0“squash”
Claim · model-written summary
Disc harrow with staged nitrogen application reduced plant growth by 61%.
Verbatim
e0“Disc harrow tillage with 67 kg N/ha preplant and 45 kg N/ha 4 weeks after planting resulted in 42% less yield, 61% less plant growth, 29 to 64% less nutrient uptake and more than 5 times as much N available for potential contamination of the groundwater as the best practices”
t0“squash”
Claim · model-written summary
Disc harrow with staged nitrogen application reduced nutrient uptake by 29 to 64%.
Verbatim
e0“Disc harrow tillage with 67 kg N/ha preplant and 45 kg N/ha 4 weeks after planting resulted in 42% less yield, 61% less plant growth, 29 to 64% less nutrient uptake and more than 5 times as much N available for potential contamination of the groundwater as the best practices”
t0“squash”
Claim · model-written summary
Disc harrow with staged nitrogen application left over fivefold more nitrogen available for groundwater contamination.
Verbatim
e0“Disc harrow tillage with 67 kg N/ha preplant and 45 kg N/ha 4 weeks after planting resulted in 42% less yield, 61% less plant growth, 29 to 64% less nutrient uptake and more than 5 times as much N available for potential contamination of the groundwater as the best practices”
t0“squash”
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