Abstract
Plant materials differ in their chemical composition, rate of decomposition and suitability as mulch materials. Experiments were conducted during 2006–2007 and 2007–2008 cropping seasons for early yam cultivation at Owo in the forest–savanna transition zone of southwest Nigeria to study the effect of Chromolaena odorata and Tithonia diversifolia mulches applied at 0.0, 5.0, 7.5, 10.0 and 12.5 t ha−1 on soil chemical properties, leaf nutrient composition, growth and tuber yield of white yam (Dioscorea rotundata Poir). Both C. odorata and T. diversifolia mulches reduced soil bulk density and temperature; increased concentrations of soil organic matter (SOM), total N, available P, exchangeable K, Ca and Mg, leaf N, P, K, Ca and Mg; enhanced growth and yield of yam compared with control. The values of SOM, total N and available P and leaf N and P concentrations increased with increasing mulch rate. C. odorata mulch and T. diversifolia mulch applied at 10.0 and 7.5 t ha−1, respectively, was found to be suitable for yam production. T. diversifolia mulch compared with C. odorata mulch produced higher values of soil chemical properties, leaf nutrient concentrations, growth and yield of yam. T. diversifolia mulch produced 19% and 18% higher tuber yield compared with C. odorata mulch during 2006–2007 and 2007–2008 cropping seasons, respectively.
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Claims 13
Claim · model-written summary
Both mulches reduced soil bulk density and temperature versus control.
Verbatim
e0“Both C. odorata and T. diversifolia mulches reduced soil bulk density and temperature; increased concentrations of soil organic matter (SOM), total N, available P, exchangeable K, Ca and Mg, leaf N, P, K, Ca and Mg; enhanced growth and yield of yam compared with control.”
Claim · model-written summary
Both mulches increased soil organic matter and nutrient concentrations versus control.
Verbatim
e0“Both C. odorata and T. diversifolia mulches reduced soil bulk density and temperature; increased concentrations of soil organic matter (SOM), total N, available P, exchangeable K, Ca and Mg, leaf N, P, K, Ca and Mg; enhanced growth and yield of yam compared with control.”
Claim · model-written summary
Both mulches increased yam leaf nutrient concentrations versus control.
Verbatim
e0“Both C. odorata and T. diversifolia mulches reduced soil bulk density and temperature; increased concentrations of soil organic matter (SOM), total N, available P, exchangeable K, Ca and Mg, leaf N, P, K, Ca and Mg; enhanced growth and yield of yam compared with control.”
Claim · model-written summary
Both mulches enhanced yam growth and yield versus control.
Verbatim
e0“Both C. odorata and T. diversifolia mulches reduced soil bulk density and temperature; increased concentrations of soil organic matter (SOM), total N, available P, exchangeable K, Ca and Mg, leaf N, P, K, Ca and Mg; enhanced growth and yield of yam compared with control.”
Claim · model-written summary
Soil organic matter, total N and available P increased as mulch rate increased.
Verbatim
e0“The values of SOM, total N and available P and leaf N and P concentrations increased with increasing mulch rate.”
t0“yam”
Claim · model-written summary
Yam leaf N and P concentrations increased as mulch rate increased.
Verbatim
e0“The values of SOM, total N and available P and leaf N and P concentrations increased with increasing mulch rate.”
t0“yam”
Claim · model-written summary
C. odorata mulch at 10.0 t ha−1 was judged suitable for yam production.
Verbatim
e0“C. odorata mulch and T. diversifolia mulch applied at 10.0 and 7.5 t ha−1, respectively, was found to be suitable for yam production.”
Claim · model-written summary
T. diversifolia mulch at 7.5 t ha−1 was judged suitable for yam production.
Verbatim
e0“C. odorata mulch and T. diversifolia mulch applied at 10.0 and 7.5 t ha−1, respectively, was found to be suitable for yam production.”
Claim · model-written summary
Tithonia mulch yielded higher soil chemical property values than Chromolaena mulch.
Verbatim
e0“T. diversifolia mulch compared with C. odorata mulch produced higher values of soil chemical properties, leaf nutrient concentrations, growth and yield of yam.”
Claim · model-written summary
Tithonia mulch yielded higher yam leaf nutrient concentrations than Chromolaena mulch.
Verbatim
e0“T. diversifolia mulch compared with C. odorata mulch produced higher values of soil chemical properties, leaf nutrient concentrations, growth and yield of yam.”
Claim · model-written summary
Tithonia mulch yielded higher yam growth than Chromolaena mulch.
Verbatim
e0“T. diversifolia mulch compared with C. odorata mulch produced higher values of soil chemical properties, leaf nutrient concentrations, growth and yield of yam.”
Claim · model-written summary
Tithonia mulch yielded 19% more yam tubers than Chromolaena mulch in 2006–2007.
Verbatim
e0“T. diversifolia mulch produced 19% and 18% higher tuber yield compared with C. odorata mulch during 2006–2007 and 2007–2008 cropping seasons, respectively.”
t0“yam”
Claim · model-written summary
Tithonia mulch yielded 18% more yam tubers than Chromolaena mulch in 2007–2008.
Verbatim
e0“T. diversifolia mulch produced 19% and 18% higher tuber yield compared with C. odorata mulch during 2006–2007 and 2007–2008 cropping seasons, respectively.”
t0“yam”
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mulching · soil: chemistry · DioscoreaResults agree
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mulching · nutrient: content · DioscoreaResults agree
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mulching · yield · DioscoreaResults agree
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3 papers more in this group
See all 7 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.