Abstract
Intercropping corn and palisade grass is a technique to increase straw production, soil C contents, nutrient cycling and crop yield. However, concerns arise from nitrogen (N) uptake by the intercropping crop causing reduction in the yield of the corn. Our objective was to evaluate N recovery efficiency (NRE), and the N dynamics in the soil-plant system in corn intercropped with palisade grass. A field trial was carried out in Bahia, Brazil, evaluating two cropping systems: corn (monoculture) and corn intercropped with palisade grass sowed between rows on the same day as the corn crop, with four replicates in a completely randomized block design. Nitrogen (150 kg∙ha–1of 15N-urea) was applied at sowing to determine NRE, which means the amounts of N-fertilizer uptake in corn and palisade grass, the amounts of N-fertilizer in soil and the 15N-fertilizer balance. Neither the NRE (63.3% in monoculture and 57.2% in intercropping) nor corn grain yield (9,800 kg∙ha–1 in monoculture and 9,671 kg∙ha–1 in intercropping) was affected by intercropping, which accumulated only 2.1 kg∙ha–1 of N-fertilizer or 1.4% N rate. In addition, palisade grass yielded 2,265 kg∙ha–1 of dry matter. The balance indicated that 82.4% of N-fertilizer was recovered in the monoculture and 86.9% in the intercropping. Intercropping palisade grass does not affect grain yield or N corn nutrition and has the potential to increase straw production contributing to maintenance of no-till.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Intercropping did not affect corn nitrogen recovery efficiency.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- intercroppinge0
- Outcome
- NREe0
- Direction
- Neithere0
- Value
- 57.2%e0
- Qualifier
- 63.3%e0
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither the NRE (63.3% in monoculture and 57.2% in intercropping) nor corn grain yield (9,800 kg∙ha–1 in monoculture and 9,671 kg∙ha–1 in intercropping) was affected by intercropping”
Claim · model-written summary
Intercropping did not affect corn grain yield.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- intercroppinge0
- Outcome
- corn grain yielde0
- Direction
- was affectede0
- Value
- 9,671 kg∙ha–1e0
- Qualifier
- 9,800 kg∙ha–1e0
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither the NRE (63.3% in monoculture and 57.2% in intercropping) nor corn grain yield (9,800 kg∙ha–1 in monoculture and 9,671 kg∙ha–1 in intercropping) was affected by intercropping”
Claim · model-written summary
Intercropped palisade grass accumulated 2.1 kg per hectare fertilizer nitrogen.
- Taxon
- palisade grass
Urochloa brizanthae1 - Outcome
- N-fertilizere0
- Value
- 2.1 kg∙ha–1e0
- Qualifier
- 1.4% N ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intercropping, which accumulated only 2.1 kg∙ha–1 of N-fertilizer or 1.4% N rate.”
e1“corn intercropped with palisade grass”
Claim · model-written summary
Palisade grass produced 2,265 kg per hectare dry matter.
- Taxon
- palisade grassUrochloa brizanthae0
- Outcome
- dry mattere0
- Value
- 2,265 kg∙ha–1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“palisade grass yielded 2,265 kg∙ha–1 of dry matter.”
Claim · model-written summary
Monoculture recovered 82.4% of fertilizer nitrogen.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- N-fertilizer was recoverede0
- Value
- 82.4%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“82.4% of N-fertilizer was recovered in the monoculture”
e1“corn (monoculture)”
Claim · model-written summary
Intercropping recovered 86.9% of fertilizer nitrogen.
- Taxon
- cornZea mays subsp. mayse2
- Outcome
- N-fertilizer was recoverede1
- Value
- 86.9%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“86.9% in the intercropping.”
e1“The balance indicated that 82.4% of N-fertilizer was recovered in the monoculture and 86.9% in the intercropping.”
e2“corn intercropped with palisade grass”
Claim · model-written summary
Authors concluded palisade grass intercropping can increase straw production.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Intercropping palisade grasse0
- Outcome
- straw productione0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping palisade grass does not affect grain yield or N corn nutrition and has the potential to increase straw production contributing to maintenance of no-till.”
The same questions in other papers
intercropping · nutrient: efficiency · Zea mays (maize)Positive and negative results
2 papers in the same direction as this paper · 19 reporting no difference from an alternative
- positive
- positive
- positive
18 papers more in this group
See all 22 papers →intercropping · yield · Zea mays (maize)Positive and negative results
220 papers in the same direction as this paper · 613 reporting no difference from an alternative
- positive
- positive
- no effect
830 papers more in this group
See all 834 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.