Abstract
Abstract A pot experiment evaluating the influence of five rates each of compost, inorganic fertilizer (MFert), and combination of both fertilizers (OBF) on maize (Zea mays L.), performance was conducted in the greenhouse using three cropping cycle. This was followed by a field trial lasting four cropping seasons at Ilora in the derived savanna and at Ibadan in the forest zones of Nigeria. Maize followed by cowpea was used as test crops on the field. Application of the fertilizers led to increases in maize and cowpea grain yields and improved the nutrient element concentrations in maize leaf tissue. Agronomic effectiveness of compost and OBF on maize relative to MFert was 88 and 118%, at Ilora and 81 and 97% at Ibadan. There was an increase of 56 and 89% Relative Agronomic Effectiveness (RAE), for compost and OBF over MFert in the residual study on cowpea. Also, the soil macro and micro nutrient status was highly improved in comparison with the MFert at postharvest period. The optimum rates of the organic fertilizers for sustainable maize and cowpea yield were between 5 and 10 t ha−1. The agronomic effectiveness of the residual organic fertilizers was higher than that of MFert. Optimum rate of OBF was 5 t ha−1. Application of compost significantly increased total microbial biomass in the soil. Also, compost and OBF application led to a fairly high population of Azotobacter (N-fixing bacteria) and thus its biomass. The MFert, however caused a sharp reduction in microbial biomass in the soil. The organic fertilizer improved aggregate stability index and permeability of the soil. On the whole, the positive effects obtained from OBF and compost in this study favor the recycling of farm wastes for sustainable crop production.
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Claims 11
Claim · model-written summary
Fertilizer application increased maize grain yield
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the influence of five rates each of compost, inorganic fertilizer (MFert), and combination of both fertilizers (OBF) on maize (Zea mays L.)”
e1“Application of the fertilizers led to increases in maize and cowpea grain yields”
Claim · model-written summary
Fertilizer application increased cowpea grain yield
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- Application of the fertilizerse1
- Outcome
- grain yieldse1
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the influence of five rates each of compost, inorganic fertilizer (MFert), and combination of both fertilizers (OBF) on maize (Zea mays L.)”
e1“Application of the fertilizers led to increases in maize and cowpea grain yields”
Claim · model-written summary
Compost and OBF had 88 and 118% agronomic effectiveness on maize relative to MFert at Ilora
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the influence of five rates each of compost, inorganic fertilizer (MFert), and combination of both fertilizers (OBF) on maize (Zea mays L.)”
e2“Agronomic effectiveness of compost and OBF on maize relative to MFert was 88 and 118%, at Ilora and 81 and 97% at Ibadan”
Claim · model-written summary
Compost and OBF increased cowpea relative agronomic effectiveness by 56 and 89% over MFert in the residual study
- Taxon
- cowpeaVigna unguiculatae3
- Outcome
- Relative Agronomic Effectiveness (RAE)e3
- Direction
- increasee3
- Value
- 56 and 89%e3
- Comparator
- MFerte3
- Setting
- residual studye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“There was an increase of 56 and 89% Relative Agronomic Effectiveness (RAE), for compost and OBF over MFert in the residual study on cowpea”
Claim · model-written summary
Optimum rates of organic fertilizers for sustainable maize and cowpea yield are between 5 and 10 t ha-1
- Taxon
- maize and cowpeaVigna unguiculata
Zea mayse4 - Outcome
- The optimum rates of the organic fertilizerse4
- Value
- 5 and 10 t ha−1e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The optimum rates of the organic fertilizers for sustainable maize and cowpea yield were between 5 and 10 t ha−1”
Claim · model-written summary
Optimum rate of OBF for sustainable maize and cowpea yield is 5 t ha-1
- Taxon
- maize and cowpeaVigna unguiculataZea mayse4
- Outcome
- Optimum rate of OBFe5
- Value
- 5 t ha−1e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The optimum rates of the organic fertilizers for sustainable maize and cowpea yield were between 5 and 10 t ha−1”
e5“Optimum rate of OBF was 5 t ha−1”
Claim · model-written summary
Application of compost increased total microbial biomass in the soil
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the influence of five rates each of compost, inorganic fertilizer (MFert), and combination of both fertilizers (OBF) on maize (Zea mays L.)”
e6“Application of compost significantly increased total microbial biomass in the soil. Also, compost and OBF application led to a fairly high population of Azotobacter (N-fixing bacteria) and thus its biomass”
Claim · model-written summary
MFert sharply reduced soil microbial biomass
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the influence of five rates each of compost, inorganic fertilizer (MFert), and combination of both fertilizers (OBF) on maize (Zea mays L.)”
e7“The MFert, however caused a sharp reduction in microbial biomass in the soil. The organic fertilizer improved aggregate stability index and permeability of the soil. On the whole, the positive effects obtained from OBF and compost in this study favor the recycling of farm wastes for sustainable crop production”
Claim · model-written summary
Compost and OBF application led to a fairly high population of Azotobacter in the soil
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the influence of five rates each of compost, inorganic fertilizer (MFert), and combination of both fertilizers (OBF) on maize (Zea mays L.)”
e6“Application of compost significantly increased total microbial biomass in the soil. Also, compost and OBF application led to a fairly high population of Azotobacter (N-fixing bacteria) and thus its biomass”
Claim · model-written summary
Organic fertilizer improved soil aggregate stability index and permeability
- Treatment
- organic fertilizere7
- Outcome
- aggregate stability index and permeability of the soile7
- Direction
- improvede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the influence of five rates each of compost, inorganic fertilizer (MFert), and combination of both fertilizers (OBF) on maize (Zea mays L.)”
e7“The MFert, however caused a sharp reduction in microbial biomass in the soil. The organic fertilizer improved aggregate stability index and permeability of the soil. On the whole, the positive effects obtained from OBF and compost in this study favor the recycling of farm wastes for sustainable crop production”
Claim · model-written summary
Recycling of farm wastes is favored for sustainable crop production
- Outcome
- recycling of farm wastes for sustainable crop productione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the influence of five rates each of compost, inorganic fertilizer (MFert), and combination of both fertilizers (OBF) on maize (Zea mays L.)”
e7“The MFert, however caused a sharp reduction in microbial biomass in the soil. The organic fertilizer improved aggregate stability index and permeability of the soil. On the whole, the positive effects obtained from OBF and compost in this study favor the recycling of farm wastes for sustainable crop production”
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