Abstract
A field experiment was conducted to investigate the effects of white clover (Trifolium repens L.) living mulch controlled only by mowing on the nitrogen (N) nutrition and yield of silage corn (Zea mays L.). Eight treatments were tested: one living mulch treatment without N application and seven conventional cultivation treatments with different N applications (0–200 kg ha−1). White clover was sown in the living mulch treatment in August. The next May, white clover shoots in the living mulch treatment were clipped and left in the field. After tilling the conventional cultivation treatments, corn was sown. At the time when the corn was sown, the N uptake of the white clover shoots was 173 kg ha−1. Measurements at 40 days after the sowing of corn (40 DAS) revealed that the N concentration of corn shoots grown in the living mulch treatment was lower than that in the conventional cultivation treatment without N application. At harvest (123 DAS), compared with that in the conventional cultivation treatment without N application, the N uptake of corn shoots in the living mulch treatment increased by 31.8 kg ha−1. Based on the N uptake and the yield of corn, the fertilizer N equivalencies of living mulch were 62 and 70 kg ha−1 at harvest, respectively. These results indicate that living mulch controlled only by mowing increases the N uptake of corn and may reduce the N application required for corn production.
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Claims 5
Claim · model-written summary
Living mulch controlled only by mowing increased corn shoot N uptake by 31.8 kg ha−1 at harvest compared with conventional cultivation without N application.
- Taxon
- corn
Zea mays subsp. mayse2 - Treatment
- living mulch controlled only by mowingt0
- Outcome
- N uptake of corn shootse2
- Direction
- increasede2
- Value
- 31.8 kg ha−1e2
- Comparator
- conventional cultivation treatment without N applicatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“living mulch controlled only by mowing supplies nitrogen to corn”
e2“compared with that in the conventional cultivation treatment without N application, the N uptake of corn shoots in the living mulch treatment increased by 31.8 kg ha−1”
Claim · model-written summary
Corn shoot N concentration at 40 days after sowing was lower under living mulch than under conventional cultivation without N application.
- Taxon
- cornZea mays subsp. mayse3
- Treatment
- living mulch treatmente3
- Outcome
- N concentration of corn shootse3
- Direction
- lowere3
- Qualifier
- 40 days after the sowing of corne3
- Comparator
- conventional cultivation treatment without N applicatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“living mulch controlled only by mowing supplies nitrogen to corn”
e3“Measurements at 40 days after the sowing of corn (40 DAS) revealed that the N concentration of corn shoots grown in the living mulch treatment was lower than that in the conventional cultivation treatment without N application”
Claim · model-written summary
White clover shoots held 173 kg ha−1 of N when corn was sown.
- Taxon
- white clover
Trifolium repense4 - Outcome
- N uptake of the white clover shootse4
- Value
- 173 kg ha−1e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the N uptake of the white clover shoots was 173 kg ha−1”
Claim · model-written summary
The fertilizer N equivalency of living mulch at harvest was 62 and 70 kg ha−1, based on N uptake and yield of corn.
- Taxon
- cornZea mays subsp. mayse5
- Outcome
- fertilizer N equivalenciese5
- Value
- 62 and 70 kg ha−1e5
- Qualifier
- Based on the N uptake and the yield of corne5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“living mulch controlled only by mowing supplies nitrogen to corn”
e5“Based on the N uptake and the yield of corn, the fertilizer N equivalencies of living mulch were 62 and 70 kg ha−1 at harvest, respectively”
Claim · model-written summary
Living mulch controlled only by mowing may reduce the N application required for corn production.
- Taxon
- cornZea mays subsp. mayse6
- Outcome
- N application required for corn productione6
- Direction
- reducee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“may reduce the N application required for corn production”
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