Abstract
Field experiments were conducted at the Teaching and Research Farm of the Faculty of Agriculture and Natural Resources Management, Ebonyi State University, Abakaliki, southeastern Nigeria, in 2008, 2009, and 2010, to study the selected physico-chemical properties of an ultisol and maize yield (Zea mays L.) as influenced by application of rice husk dust in 2008 and 2009 and the residual effect in 2010. Soil bulk density, total porosity, moisture content, soil organic carbon, total nitrogen, C:N ratio, pH, and available phosphorus and exchangeable bases were all significantly affected by amendment with rice husk dust at the rates of 10 and 20 t ha− 1. In general, bulk density, total porosity, soil water content, organic carbon, and C:N were more affected by unburnt than burnt waste, while the reverse was true for pH, available phosphorus, and exchangeable K+ and Ca2+. Application of rice husk dust resulted in increased maize grain yields during the two seasons when it was applied and as a residual effect in the following season.
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Claims 9
Claim · model-written summary
Rice husk dust at 10 and 20 t ha− 1 significantly affected soil bulk density, total porosity and moisture content.
- Treatment
- amendment with rice husk dust at the rates of 10 and 20 t ha− 1e0
- Outcome
- Soil bulk density, total porosity, moisture contente0
Zea maysNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil bulk density, total porosity, moisture content, soil organic carbon, total nitrogen, C:N ratio, pH, and available phosphorus and exchangeable bases were all significantly affected by amendment with rice husk dust at the rates of 10 and 20 t ha− 1.”
t0“maize”
Claim · model-written summary
Rice husk dust at 10 and 20 t ha− 1 significantly affected soil organic carbon, total nitrogen and C:N ratio.
- Treatment
- amendment with rice husk dust at the rates of 10 and 20 t ha− 1e0
- Outcome
- soil organic carbon, total nitrogen, C:N ratioe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil bulk density, total porosity, moisture content, soil organic carbon, total nitrogen, C:N ratio, pH, and available phosphorus and exchangeable bases were all significantly affected by amendment with rice husk dust at the rates of 10 and 20 t ha− 1.”
t0“maize”
Claim · model-written summary
Rice husk dust at 10 and 20 t ha− 1 significantly affected soil pH, available phosphorus and exchangeable bases.
- Treatment
- amendment with rice husk dust at the rates of 10 and 20 t ha− 1e0
- Outcome
- pH, and available phosphorus and exchangeable basese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pH, and available phosphorus and exchangeable bases were all significantly affected by amendment with rice husk dust at the rates of 10 and 20 t ha− 1.”
t0“maize”
Claim · model-written summary
Unburnt rice husk waste affected bulk density, total porosity and soil water content more than burnt waste.
- Treatment
- unburnte0
- Outcome
- bulk density, total porosity, soil water contente0
- Direction
- more affectede0
- Comparator
- burnt wastee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bulk density, total porosity, soil water content, organic carbon, and C:N were more affected by unburnt than burnt waste”
t0“maize”
Claim · model-written summary
Unburnt rice husk waste affected soil organic carbon and C:N more than burnt waste.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bulk density, total porosity, soil water content, organic carbon, and C:N were more affected by unburnt than burnt waste”
t0“maize”
Claim · model-written summary
Burnt rice husk waste affected soil pH, available phosphorus and exchangeable K+ more than unburnt waste.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reverse was true for pH, available phosphorus, and exchangeable K+ and Ca2+.”
e1“more affected by unburnt than burnt waste”
t0“maize”
Claim · model-written summary
Burnt rice husk waste affected exchangeable Ca2+ more than unburnt waste.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reverse was true for pH, available phosphorus, and exchangeable K+ and Ca2+.”
e1“more affected by unburnt than burnt waste”
t0“maize”
Claim · model-written summary
Rice husk dust application increased maize grain yield in the two application seasons.
- Treatment
- Application of rice husk duste0
- Outcome
- maize grain yieldse0
- Direction
- increasede0
- Qualifier
- during the two seasons when it was appliede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of rice husk dust resulted in increased maize grain yields during the two seasons when it was applied”
Claim · model-written summary
Rice husk dust application increased maize grain yield as a residual effect in the following season.
- Treatment
- Application of rice husk duste0
- Outcome
- maize grain yieldse0
- Direction
- increasede0
- Qualifier
- as a residual effect in the following seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of rice husk dust resulted in increased maize grain yields during the two seasons when it was applied and as a residual effect in the following season.”
The same questions in other papers
Oryza sativa · yield · Zea mays (maize)Positive and negative results
62 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- no effect
62 papers more in this group
See all 66 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.