Abstract
AbstractAgronomic value and environmental impact of two composts were evaluated in a three-year field experiment (2002, 2003 and 2004) on alfalfa and cocksfoot in Southern Italy. The effects of Municipal Solid Waste compost (MSW), Olive Pomace Compost (OPC), mineral fertilizer (Min) (phosphorus as 75 kg ha−1 for alfalfa and nitrogen as 50 kg ha−1 for cocksfoot) and an unfertilized treatment (Contr) were compared on crop yield, soil characteristics and environment impact. During the cropping cycles, fresh and dry weights, plant nitrogen status (leaves SPAD readings and petiole nitrate content) and plant total N content were determined for calculating the protein content and the plant N uptake. Moreover, at the beginning and the end of the research, chemical soil characteristics and heavy metal levels were also determined. The results indicated that in cocksfoot fertilized with MSW and OPC composts, the mean cumulative dry weight increased by 20.85 and 16.51%, respectively compared to the control, but it was significantly lower than Min treatment. In the alfalfa crop, the mean cumulative dry weight of Control, MSW and OPC treatments were very similar and lower than mineral fertilizer (−7.86, −7.09 and −10.31%, respectively). At the end of the experiment, (2004) the soil total N increased significantly in alfalfa (from 1.32 to 1.45 g kg−1) while no significant difference was found for the cocksfoot. After three years of compost application, the total soil organic carbon increased significantly in both crops (23.98% for cocksfoot, and 43.17% for alfalfa in respect to the control), indicating that MSW and OPC amendments positively affected the organic matter. Furthermore, total organic carbon (in both crops) and humified organic carbon (in alfalfa) were significantly lower in the Contr treatment than on the MSW and OPC treatments.
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Claims 12
Claim · model-written summary
MSW increased cocksfoot cumulative dry weight by 20.85% versus control.
- Taxon
- cocksfoot
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Dactylis glomeratae0 - Treatment
- MSWe0
- Outcome
- mean cumulative dry weighte0
- Direction
- increasede0
- Value
- 20.85e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“in cocksfoot fertilized with MSW and OPC composts, the mean cumulative dry weight increased by 20.85 and 16.51%, respectively compared to the control”
Claim · model-written summary
OPC increased cocksfoot cumulative dry weight by 16.51% versus control.
- Taxon
- cocksfootDactylis glomeratae0
- Treatment
- OPCe0
- Outcome
- mean cumulative dry weighte0
- Direction
- increasede0
- Value
- 16.51%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in cocksfoot fertilized with MSW and OPC composts, the mean cumulative dry weight increased by 20.85 and 16.51%, respectively compared to the control”
Claim · model-written summary
Cocksfoot dry weight with compost was significantly below mineral fertilizer.
- Taxon
- cocksfootDactylis glomeratae0
- Treatment
- MSW and OPC compostse0
- Outcome
- mean cumulative dry weighte0
- Direction
- lowere0
- Comparator
- Min treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in cocksfoot fertilized with MSW and OPC composts, the mean cumulative dry weight increased by 20.85 and 16.51%, respectively compared to the control, but it was significantly lower than Min treatment”
Claim · model-written summary
Alfalfa dry weight under control was 7.86% below mineral fertilizer.
- Taxon
- alfalfa
Medicago sativae0 - Treatment
- Controle0
- Outcome
- mean cumulative dry weighte0
- Direction
- lowere0
- Value
- −7.86e0
- Comparator
- mineral fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the alfalfa crop, the mean cumulative dry weight of Control, MSW and OPC treatments were very similar and lower than mineral fertilizer (−7.86, −7.09 and −10.31%, respectively)”
Claim · model-written summary
Alfalfa dry weight under MSW was 7.09% below mineral fertilizer.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- MSWe0
- Outcome
- mean cumulative dry weighte0
- Direction
- lowere0
- Value
- −7.09e0
- Comparator
- mineral fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the alfalfa crop, the mean cumulative dry weight of Control, MSW and OPC treatments were very similar and lower than mineral fertilizer (−7.86, −7.09 and −10.31%, respectively)”
Claim · model-written summary
Alfalfa dry weight under OPC was 10.31% below mineral fertilizer.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- OPCe0
- Outcome
- mean cumulative dry weighte0
- Direction
- lowere0
- Value
- −10.31%e0
- Comparator
- mineral fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the alfalfa crop, the mean cumulative dry weight of Control, MSW and OPC treatments were very similar and lower than mineral fertilizer (−7.86, −7.09 and −10.31%, respectively)”
Claim · model-written summary
Soil total N in alfalfa rose significantly from 1.32 to 1.45 g kg−1 by 2004.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- soil total Ne0
- Direction
- increasede0
- Value
- from 1.32 to 1.45 g kg−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the end of the experiment, (2004) the soil total N increased significantly in alfalfa (from 1.32 to 1.45 g kg−1)”
Claim · model-written summary
Soil total N in cocksfoot showed no significant difference.
- Taxon
- cocksfootDactylis glomeratae0
- Outcome
- soil total Ne1
- Direction
- no significant differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while no significant difference was found for the cocksfoot”
e1“At the end of the experiment, (2004) the soil total N increased significantly in alfalfa (from 1.32 to 1.45 g kg−1)”
Claim · model-written summary
Cocksfoot soil organic carbon increased significantly by 23.98% versus control after compost.
- Taxon
- cocksfootDactylis glomeratae0
- Treatment
- compost applicatione0
- Outcome
- total soil organic carbone0
- Direction
- increasede0
- Value
- 23.98%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After three years of compost application, the total soil organic carbon increased significantly in both crops (23.98% for cocksfoot, and 43.17% for alfalfa in respect to the control)”
Claim · model-written summary
Alfalfa soil organic carbon increased significantly by 43.17% versus control after compost.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- compost applicatione0
- Outcome
- total soil organic carbone0
- Direction
- increasede0
- Value
- 43.17%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After three years of compost application, the total soil organic carbon increased significantly in both crops (23.98% for cocksfoot, and 43.17% for alfalfa in respect to the control)”
Claim · model-written summary
Total organic carbon in both crops was lower in control than compost treatments.
- Taxon
- alfalfa and cocksfootMedicago sativaDactylis glomeratae1
- Treatment
- MSW and OPC treatmentse0
- Outcome
- total organic carbone0
- Direction
- lowere0
- Comparator
- Contr treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total organic carbon (in both crops) and humified organic carbon (in alfalfa) were significantly lower in the Contr treatment than on the MSW and OPC treatments”
t0“Fodder Crops”
e1“on alfalfa and cocksfoot in Southern Italy”
Claim · model-written summary
Humified organic carbon in alfalfa was lower in control than compost treatments.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- MSW and OPC treatmentse0
- Outcome
- humified organic carbone0
- Direction
- lowere0
- Comparator
- Contr treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total organic carbon (in both crops) and humified organic carbon (in alfalfa) were significantly lower in the Contr treatment than on the MSW and OPC treatments”
The same questions in other papers
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See all 11 papers →fertilization · growth · Dactylis glomerata (cocksfoot)Positive and negative results
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- no effect
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See all 12 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.