Abstract
Improvement in soil physicochemical and biological properties through the use of organic amendment is necessary for increased crop yield. This study evaluated the effects of poultry dropping, (PD) and wood ash (WA) on soil properties and maize grain yield in an ultisol in southeastern, Nigeria. The experiment was a randomized complete block design with four treatments replicated five times. The treatments were 0 t ha-1 (control), 4 t ha-1PD , 4 t ha-1 WA and 2 t ha-1 PD + 2 t ha-1 WA . Results of the study showed significant (p ≤0.05) decrease in bulk density and increase in total porosity in amended soil relative to the T1 (control). Similarly, soil chemical properties (Ca, Mg, pH, OM, avail P, Na, K) were significantly increased relative to the control. Application of the amendments increased maize grain yield relative to the control with highest increased observed in 4 t ha-1PD amended plots. The use of PD and WA for soil property improvement and increased crop yield is recommended for the studied soil.
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Claims 7
Claim · model-written summary
Organic amendments reduced soil bulk density relative to the control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“significant (p ≤0.05) decrease in bulk density and increase in total porosity in amended soil relative to the T1 (control)”
t0“Maize”
Claim · model-written summary
Organic amendments increased soil total porosity relative to the control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“significant (p ≤0.05) decrease in bulk density and increase in total porosity in amended soil relative to the T1 (control)”
t0“Maize”
Claim · model-written summary
Organic amendments significantly increased soil Ca, Mg and pH relative to control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“soil chemical properties (Ca, Mg, pH, OM, avail P, Na, K) were significantly increased relative to the control”
t0“Maize”
e1“organic amendment”
Claim · model-written summary
Organic amendments significantly increased soil OM, available P and Na relative to control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“soil chemical properties (Ca, Mg, pH, OM, avail P, Na, K) were significantly increased relative to the control”
t0“Maize”
e1“organic amendment”
Claim · model-written summary
Organic amendments significantly increased soil K relative to control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“soil chemical properties (Ca, Mg, pH, OM, avail P, Na, K) were significantly increased relative to the control”
t0“Maize”
e1“organic amendment”
Claim · model-written summary
Amendments increased maize grain yield relative to control, with the greatest increase under poultry droppings at 4 t ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Application of the amendments increased maize grain yield relative to the control with highest increased observed in 4 t ha-1PD amended plots”
Claim · model-written summary
The authors recommend poultry droppings and wood ash to improve soil properties and crop yield in the studied soil.
- Outcome
- use of PD and WA for soil property improvement and increased crop yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The use of PD and WA for soil property improvement and increased crop yield is recommended for the studied soil”
t0“Maize”
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See all 120 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.