Abstract
Early generation sweet potato vines are multiplied on nursery beds with high densities using soil medium within insect-proof net tunnels to inhibit the entrance of virus-transmitting insects (aphids and white flies). However, the rapid multiplication beds require suitable soil amendments to support vigorous growth of vines. To this end, farmyard manure, wood ash, sawdust, compost, coffee husk and control (soil only) were evaluated using Randomized Complete Block Design with three replications during the belg and meher seasons of 2016 to 2017 in the Chefe testing site of Hawassa Agriculture Research Center. Results also showed that the soil pH was higher by 8.9% and 1.4% due to the application of wood ash and sawdust whereas there was 9.3, 5.9 and 0.9% decrease in soil pH due to the use of compost, coffee husk and farmyard manure, respectively. All soil amendments enhanced soil moisture conservation compared to the control. A 47.0%, 31.2%, 30.3% and 26.5% increase in cation exchange capacity was observed by the end of second year due to use of coffee husk, wood ash, sawdust and farmyard manure, respectively. The potassium content was increased by 47.0%, 45.5% and 35.9% due to the use of wood ash, farmyard manure and coffee husk, respectively. The pencil root length, pencil root width and below-ground biomass were not affected significantly (P < 0.05) by differences in soil amendments (P < 0.05) in this experiment. The percentage increment in above-ground biomass due to the farmyard manure, coffee husk and compost was 62.01%, 53.56% and 49.87%, respectively higher than the control. Sawdust suppressed vine growth compared to the control. Coffee husk and farmyard manure medium produced higher number of branches (23 branches / plant) during meher whereas coffee husk produced the same during belg (14.4 branches / plant). Significantly (P < 0.05) higher number of vines was obtained due to farmyard manure (4686 vines/m2) and coffee husk (4602 vines/m2) compared to the control (2683 vines/m2). Significantly longer internodes were recorded due to the farmyard (100.6% greater) compared to the control. Thus, 50% farmyard manure, 50% coffee husk or 50% compost are recommended for better growth of pre-basic sweet potato vines in net tunnels. This study proclaimed possibility of nursery bed vine multiplication through use of local organic residues at the level of small holders and research sites during short and long rain seasons.
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Claims 20
Claim · model-written summary
Wood ash raised soil pH by 8.9%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“soil pH was higher by 8.9% and 1.4% due to the application of wood ash and sawdust”
t0“sweet potato”
Claim · model-written summary
Sawdust raised soil pH by 1.4%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil pH was higher by 8.9% and 1.4% due to the application of wood ash and sawdust”
t0“sweet potato”
Claim · model-written summary
Compost decreased soil pH by 9.3%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“9.3, 5.9 and 0.9% decrease in soil pH due to the use of compost, coffee husk and farmyard manure, respectively”
t0“sweet potato”
Claim · model-written summary
Coffee husk decreased soil pH by 5.9%.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- coffee huske0
- Outcome
- soil pHe0
- Direction
- decreasee0
- Value
- 5.9e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“9.3, 5.9 and 0.9% decrease in soil pH due to the use of compost, coffee husk and farmyard manure, respectively”
t0“sweet potato”
Claim · model-written summary
Farmyard manure decreased soil pH by 0.9%.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- farmyard manuree0
- Outcome
- soil pHe0
- Direction
- decreasee0
- Value
- 0.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“9.3, 5.9 and 0.9% decrease in soil pH due to the use of compost, coffee husk and farmyard manure, respectively”
t0“sweet potato”
Claim · model-written summary
All soil amendments enhanced soil moisture conservation versus the control.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- All soil amendmentse0
- Outcome
- soil moisture conservatione0
- Direction
- enhancede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All soil amendments enhanced soil moisture conservation compared to the control.”
t0“sweet potato”
Claim · model-written summary
Coffee husk increased cation exchange capacity by 47.0%.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- coffee huske0
- Outcome
- cation exchange capacitye0
- Direction
- increasee0
- Value
- 47.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“47.0%, 31.2%, 30.3% and 26.5% increase in cation exchange capacity was observed by the end of second year due to use of coffee husk, wood ash, sawdust and farmyard manure, respectively”
t0“sweet potato”
Claim · model-written summary
Wood ash increased cation exchange capacity by 31.2%.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- wood ashe0
- Outcome
- cation exchange capacitye0
- Direction
- increasee0
- Value
- 31.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“47.0%, 31.2%, 30.3% and 26.5% increase in cation exchange capacity was observed by the end of second year due to use of coffee husk, wood ash, sawdust and farmyard manure, respectively”
t0“sweet potato”
Claim · model-written summary
Sawdust increased cation exchange capacity by 30.3%.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- sawduste0
- Outcome
- cation exchange capacitye0
- Direction
- increasee0
- Value
- 30.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“47.0%, 31.2%, 30.3% and 26.5% increase in cation exchange capacity was observed by the end of second year due to use of coffee husk, wood ash, sawdust and farmyard manure, respectively”
t0“sweet potato”
Claim · model-written summary
Farmyard manure increased cation exchange capacity by 26.5%.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- farmyard manuree0
- Outcome
- cation exchange capacitye0
- Direction
- increasee0
- Value
- 26.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“47.0%, 31.2%, 30.3% and 26.5% increase in cation exchange capacity was observed by the end of second year due to use of coffee husk, wood ash, sawdust and farmyard manure, respectively”
t0“sweet potato”
Claim · model-written summary
Wood ash increased soil potassium content by 47.0%.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- wood ashe0
- Outcome
- potassium contente0
- Direction
- increasede0
- Value
- 47.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium content was increased by 47.0%, 45.5% and 35.9% due to the use of wood ash, farmyard manure and coffee husk, respectively”
t0“sweet potato”
Claim · model-written summary
Farmyard manure increased soil potassium content by 45.5%.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- farmyard manuree0
- Outcome
- potassium contente0
- Direction
- increasede0
- Value
- 45.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium content was increased by 47.0%, 45.5% and 35.9% due to the use of wood ash, farmyard manure and coffee husk, respectively”
t0“sweet potato”
Claim · model-written summary
Coffee husk increased soil potassium content by 35.9%.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- coffee huske0
- Outcome
- potassium contente0
- Direction
- increasede0
- Value
- 35.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium content was increased by 47.0%, 45.5% and 35.9% due to the use of wood ash, farmyard manure and coffee husk, respectively”
t0“sweet potato”
Claim · model-written summary
Soil amendments did not significantly affect pencil root length, width, or below-ground biomass.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- soil amendmentse0
- Outcome
- pencil root length, pencil root width and below-ground biomasse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pencil root length, pencil root width and below-ground biomass were not affected significantly (P < 0.05) by differences in soil amendments”
t0“sweet potato”
Claim · model-written summary
Farmyard manure increased above-ground biomass by 62.01% versus the control.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- farmyard manuree0
- Outcome
- above-ground biomasse0
- Direction
- highere0
- Value
- 62.01%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percentage increment in above-ground biomass due to the farmyard manure, coffee husk and compost was 62.01%, 53.56% and 49.87%, respectively higher than the control”
t0“sweet potato”
Claim · model-written summary
Coffee husk increased above-ground biomass by 53.56% versus the control.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- coffee huske0
- Outcome
- above-ground biomasse0
- Direction
- highere0
- Value
- 53.56%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percentage increment in above-ground biomass due to the farmyard manure, coffee husk and compost was 62.01%, 53.56% and 49.87%, respectively higher than the control”
t0“sweet potato”
Claim · model-written summary
Compost increased above-ground biomass by 49.87% versus the control.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- composte0
- Outcome
- above-ground biomasse0
- Direction
- highere0
- Value
- 49.87%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percentage increment in above-ground biomass due to the farmyard manure, coffee husk and compost was 62.01%, 53.56% and 49.87%, respectively higher than the control”
t0“sweet potato”
Claim · model-written summary
Sawdust suppressed vine growth versus the control.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- Sawduste0
- Outcome
- vine growthe0
- Direction
- suppressede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sawdust suppressed vine growth compared to the control.”
t0“sweet potato”
Claim · model-written summary
Farmyard manure produced significantly more vines, 4686 vines/m2, than the control.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- farmyard manuree0
- Outcome
- number of vinese0
- Direction
- highere0
- Value
- 4686 vines/m2e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significantly (P < 0.05) higher number of vines was obtained due to farmyard manure (4686 vines/m2) and coffee husk (4602 vines/m2) compared to the control (2683 vines/m2).”
t0“sweet potato”
Claim · model-written summary
Coffee husk produced significantly more vines, 4602 vines/m2, than the control.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- coffee huske0
- Outcome
- number of vinese0
- Direction
- highere0
- Value
- 4602 vines/m2e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significantly (P < 0.05) higher number of vines was obtained due to farmyard manure (4686 vines/m2) and coffee husk (4602 vines/m2) compared to the control (2683 vines/m2).”
t0“sweet potato”
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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.