Abstract
Long-term use of chemical fertilizers will impair the physical and biological properties of facility soil environment for crop cultivation. The effective way to reduce the use of chemical fertilizers and improve soil properties is known to utilize green manure crops. The objectives of this study were to investigate the growth characteristics and yields, to analyze the nutrient utilization efficiency, and to measure the effect of soil microbial activity through enzyme activity when incorporating hairy vetch (Vicia villosa Roth) with facility-grown peppers (Capsicum annuum L.). Four different fertilizer treatments were applied: no fertilizer (CON), chemical fertilizer (CF), hairy vetch and 0.5N additional fertilizer (HV0.7N), and hairy vetch and N additional fertilizer (HVN). Soil and plant nutrient content, plant nutrient use efficiency, and soil enzyme activity were analyzed in each treatment. All fertilization treatments significantly increased total fresh weight and fruit dry weight of red pepper compared to the control (CON). However, total fresh weight, macronutrient uptake, and P and K use efficiency were significantly lower in the HV0.7N treatment than the CF and HVN treatments. The HV0.7N and HVN treatments significantly increased soil dehydrogenase activity during entire cultivation period. Whereas, urease and -glucosidase activity were significantly increased only in the early stages of cultivation. These results suggest that the incorporation of hairy vetch residue as organic fertilizer in cultivation facility, can increase enzyme activity in the soil. Moreover, the yield of red pepper fruits was not small compared to that of CF treatment, even if only a lower amount of nitrogen was applied.
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Claims 6
Claim · model-written summary
All fertilization treatments significantly increased total fresh weight and fruit dry weight of red pepper compared with the control.
- Taxon
- red pepper
Capsicum annuum var. annuume1 - Treatment
- fertilization treatmentse1
- Outcome
- total fresh weight and fruit dry weighte1
- Direction
- increasede1
- Comparator
- control (CON)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“All fertilization treatments significantly increased total fresh weight and fruit dry weight of red pepper compared to the control (CON)”
Claim · model-written summary
HV0.7N significantly lowered total fresh weight and macronutrient uptake compared with CF and HVN treatments.
- Taxon
- Capsicum annuum L.
Capsicum annuume0 - Treatment
- HV0.7Ne2
- Outcome
- total fresh weight, macronutrient uptakee2
- Direction
- lowere2
- Comparator
- CF and HVN treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with facility-grown peppers (Capsicum annuum L.)”
e2“total fresh weight, macronutrient uptake, and P and K use efficiency were significantly lower in the HV0.7N treatment than the CF and HVN treatments”
Claim · model-written summary
HV0.7N significantly lowered P and K use efficiency compared with CF and HVN treatments.
- Taxon
- Capsicum annuum L.Capsicum annuume0
- Treatment
- HV0.7Ne2
- Outcome
- P and K use efficiencye2
- Direction
- lowere2
- Comparator
- CF and HVN treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with facility-grown peppers (Capsicum annuum L.)”
e2“total fresh weight, macronutrient uptake, and P and K use efficiency were significantly lower in the HV0.7N treatment than the CF and HVN treatments”
Claim · model-written summary
HV0.7N and HVN treatments significantly increased soil dehydrogenase activity during the entire cultivation period.
- Taxon
- Capsicum annuum L.Capsicum annuume0
- Treatment
- HV0.7N and HVN treatmentse3
- Outcome
- soil dehydrogenase activitye3
- Direction
- increasede3
- Qualifier
- during entire cultivation periode3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with facility-grown peppers (Capsicum annuum L.)”
e3“The HV0.7N and HVN treatments significantly increased soil dehydrogenase activity during entire cultivation period”
Claim · model-written summary
Urease and β-glucosidase activity in soil increased significantly only in the early stages of cultivation.
- Taxon
- Capsicum annuum L.Capsicum annuume0
- Outcome
- urease and -glucosidase activitye4
- Direction
- increasede4
- Qualifier
- only in the early stages of cultivatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with facility-grown peppers (Capsicum annuum L.)”
e4“urease and -glucosidase activity were significantly increased only in the early stages of cultivation”
Claim · model-written summary
Yield of red pepper fruits with hairy vetch and a lower nitrogen amount was not small compared with the CF treatment.
- Taxon
- Capsicum annuum L.Capsicum annuume0
- Treatment
- a lower amount of nitrogene5
- Outcome
- yield of red pepper fruitse5
- Direction
- no_changeinferrede5
- Comparator
- that of CF treatmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with facility-grown peppers (Capsicum annuum L.)”
e5“the yield of red pepper fruits was not small compared to that of CF treatment, even if only a lower amount of nitrogen was applied”
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See all 97 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.