Abstract
Abstract Adoption of conservation tillage practices has increased over the past 30 yr in the United States. Research is needed to evaluate if reduced tillage practices are compatible with manure injection on dairy farms. Two corn ( Zea mays L.) silage studies were conducted in New York to evaluate the impact of zone tillage depth and tillage intensity on early plant growth and soil nitrate‐N, corn silage productivity and quality, and nutrient uptake at harvest. Treatments included three zone tillage depths (0, 18, and 36 cm; with aerator seedbed preparation) for Study 1 (2012–2013) and three tillage intensities (no tillage, reduced tillage [aerator seedbed preparation without zone tillage], and intensified reduced tillage [aerator seedbed preparation plus zone tillage at 18‐cm depth]) for Study 2 (2014–2016). Manure was injected in the spring, and all fields had a manure and zone tillage history. Zone tillage depth did not affect early plant growth, soil nitrate‐N content at V5‐V6, corn silage yield, quality, corn stalk nitrate test (CSNT)‐N, or nutrient removal with harvest. The CSNT‐N levels exceeded 2,000 mg NO 3 –N kg –1 , confirming sufficient N for each treatment. Study 2 showed no impact of tillage intensity on corn growth, yield, or nutritive value, and CSNT‐N levels always exceeded 2,000 mg NO 3 –N kg –1 . These findings show that, on fields with a history of manure addition and reduced tillage, manure injection followed by planting without further seedbed preparation or zone tillage can maintain yields and quality and can conserve N while reducing soil disturbance and tillage‐associated fuel, equipment, and labor costs.
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Claims 5
Claim · model-written summary
Zone tillage depth did not affect early corn growth, silage yield, or quality.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Zone tillage depthe1
- Outcome
- early plant growth, soil nitrate‐N content at V5‐V6, corn silage yield, quality, corn stalk nitrate test (CSNT)‐N, or nutrient removal with harveste1
- Direction
- did not affecte1
- Setting
- New Yorke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two corn ( Zea mays L.) silage studies were conducted in New York”
e1“Zone tillage depth did not affect early plant growth, soil nitrate‐N content at V5‐V6, corn silage yield, quality, corn stalk nitrate test (CSNT)‐N, or nutrient removal with harvest.”
Claim · model-written summary
Corn stalk nitrate exceeded 2,000 mg NO 3 –N kg –1 in each zone tillage treatment, indicating sufficient nitrogen.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- CSNT‐N levelse1
- Direction
- exceedede1
- Value
- 2,000 mg NO 3 –N kg –1e1
- Qualifier
- sufficient N for each treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two corn ( Zea mays L.) silage studies were conducted in New York”
e1“The CSNT‐N levels exceeded 2,000 mg NO 3 –N kg –1 , confirming sufficient N for each treatment.”
Claim · model-written summary
Tillage intensity had no impact on corn growth, yield, or nutritive value.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- tillage intensitye1
- Outcome
- corn growth, yield, or nutritive valuee1
- Direction
- no impacte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two corn ( Zea mays L.) silage studies were conducted in New York”
e1“Study 2 showed no impact of tillage intensity on corn growth, yield, or nutritive value”
Claim · model-written summary
Corn stalk nitrate exceeded 2,000 mg NO 3 –N kg –1 throughout the tillage intensity study.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- CSNT‐N levelse1
- Direction
- exceedede1
- Value
- 2,000 mg NO 3 –N kg –1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two corn ( Zea mays L.) silage studies were conducted in New York”
e1“CSNT‐N levels always exceeded 2,000 mg NO 3 –N kg –1”
Claim · model-written summary
On previously manured reduced tillage fields, the authors recommend manure injection followed by direct planting to maintain yield and quality while conserving nitrogen and reducing operations.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- manure injection followed by planting without further seedbed preparation or zone tillagee1
- Qualifier
- on fields with a history of manure addition and reduced tillagee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn ( Zea mays L.) silage”
e1“on fields with a history of manure addition and reduced tillage, manure injection followed by planting without further seedbed preparation or zone tillage can maintain yields and quality and can conserve N while reducing soil disturbance and tillage‐associated fuel, equipment, and labor costs”
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