Abstract
Producing cash and green manure crops during the same growing season is a promising strategy for sustainable crop production. The present study evaluated the relay intercropping of a legume green manure crop (Vicia villosa Roth, hairy vetch) and root crops (radish and carrot). The hairy vetch was interseeded approximately 40 d after root crop seeding. Competitive effects were not observed in the production of either root crop, even when relay intercropped with hairy vetch. The biomass production of hairy vetch ranged from 376–990 kg DW 10a−1, and the biomass and nutrient (nitrogen, phosphorus, and potassium) accumulation of hairy vetch relay intercropped with carrot were significantly higher than those of radish. The fertilizer effects of hairy vetch incorporation obtained by relay intercropping were compared with those of conventional chemical fertilizer input in subsequent crop production (vegetable soybean and sweet corn). The yield of vegetable soybean was maintained at the same level as that of chemical fertilizer, even when cultivated with hairy vetch alone. In the sweet corn, although hairy vetch alone could not provide sufficient nutrients and growth was inferior compared to chemical fertilizers, the incorporation of hairy vetch relay intercropped with carrot showed relatively higher fertilizer effects and significant difference in ear weight was not observed with chemical fertilizer. Our results show the possibility of reducing chemical fertilizer input in succeeding crop production by hairy vetch relay intercropped with root crops.
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Claims 8
Claim · model-written summary
Hairy vetch relay intercropping showed no competitive effect on radish production.
- Taxon
- radish
Raphanus sativuse1 - Treatment
- relay intercropped with hairy vetche0
- Outcome
- Competitive effectse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Competitive effects were not observed in the production of either root crop, even when relay intercropped with hairy vetch”
e1“root crops (radish and carrot)”
Claim · model-written summary
Hairy vetch relay intercropping showed no competitive effect on carrot production.
- Taxon
- carrot
Daucus carotae1 - Treatment
- relay intercropped with hairy vetche0
- Outcome
- Competitive effectse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Competitive effects were not observed in the production of either root crop, even when relay intercropped with hairy vetch”
e1“root crops (radish and carrot)”
Claim · model-written summary
Hairy vetch biomass ranged from 376–990 kg DW 10a−1.
- Taxon
- hairy vetch
Vicia villosae0 - Outcome
- biomass productione0
- Value
- 376–990 kg DW 10a−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biomass production of hairy vetch ranged from 376–990 kg DW 10a−1”
Claim · model-written summary
Hairy vetch biomass and nutrient accumulation were higher with carrot than radish.
- Taxon
- hairy vetchVicia villosae0
- Treatment
- relay intercropped with carrote0
- Outcome
- biomass and nutrient (nitrogen, phosphorus, and potassium) accumulatione0
- Direction
- highere0
- Comparator
- radishe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the biomass and nutrient (nitrogen, phosphorus, and potassium) accumulation of hairy vetch relay intercropped with carrot were significantly higher than those of radish”
Claim · model-written summary
Vegetable soybean yield with hairy vetch alone matched chemical fertilizer.
Verbatim
e0“The yield of vegetable soybean was maintained at the same level as that of chemical fertilizer, even when cultivated with hairy vetch alone”
Claim · model-written summary
Sweet corn growth was inferior with hairy vetch alone versus chemical fertilizer.
Verbatim
e0“hairy vetch alone could not provide sufficient nutrients and growth was inferior compared to chemical fertilizers”
e1“In the sweet corn”
Claim · model-written summary
Hairy vetch relay intercropped with carrot had relatively higher fertilizer effects in sweet corn.
- Taxon
- sweet corne1
- Treatment
- incorporation of hairy vetch relay intercropped with carrote0
- Outcome
- fertilizer effectse0
- Direction
- highere0
Not reportedComparator
Verbatim
e0“the incorporation of hairy vetch relay intercropped with carrot showed relatively higher fertilizer effects”
e1“In the sweet corn”
Claim · model-written summary
Sweet corn ear weight did not differ significantly between carrot-intercropped vetch and chemical fertilizer.
- Taxon
- sweet corne1
- Treatment
- hairy vetch relay intercropped with carrote0
- Outcome
- ear weighte0
- Comparator
- chemical fertilizere0
Not reportedDirection
Verbatim
e0“the incorporation of hairy vetch relay intercropped with carrot showed relatively higher fertilizer effects and significant difference in ear weight was not observed with chemical fertilizer”
e1“In the sweet corn”
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