Abstract
To verify an effective approach for alleviating problems associated with the consecutive monoculture of sweet potato, five fertilizer treatments were designed under plastic film-mulched, drip-fertigated conditions in fields continuously planted with sweet potato over five years. These treatments included: (1) no fertilizer application, (2) basic application of water-soluble (WS) fertilizer, (3) basic application of biofertilizer (BF) and WS fertilizer, (4) split application of WS fertilizer, and (5) combined basic application of BF and split application of WS fertilizer. The effects of BF and WS fertilizer applications on yield, quality, and soil properties were evaluated. Fertilizer applications had positive effects on increasing soil activities and nutrients compared with no fertilizer application. Split fertigation with WS fertilizer increased the activities of soil dehydrogenase (DHA) by 10.94 ~ 14.74%, alkaline phosphatase (ALP) by 4.97 ~ 5.13%, and soil organic matter (SOM) by 10.43 ~ 12.47% in the second year compared with a single application. In both years, split fertigation exerted positive effects on increasing dry matter (DM) accumulation in tuberous roots and increased the productive efficiency in nitrogen (N), phosphorus (P), and potassium (K) fertilizers. BF application for two consecutive years increased the activities of soil sucrase by 7.05 ~ 17.83%, DHA by 18.65 ~ 21.34%, ALP by 6.87 ~ 7.03%, soil available P by 18.34 ~ 28.10%, and SOM by 8.18 ~ 10.17% compared with the no BF application. BF also increased the root yield by 8.88 ~ 14.14%, the carotenoid content in tuberous roots by 20.38 ~ 30.64%, and the K utilization efficiency by 11.09 ~ 14.97%. The combination of BF and split fertigation for two consecutive years was most conducive to the activation of soil nutrients, maintenance of soil fertility, and improvement in yield and quality, which could mitigate problems associated with the consecutive monoculture of sweet potato.
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Claims 15
Claim · model-written summary
Fertilizer applications increased soil activities and nutrients versus no fertilizer.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatase0t0 - Treatment
- Fertilizer applicationse0
- Outcome
- soil activities and nutrientse0
- Direction
- increasinge0
- Comparator
- no fertilizer applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Fertilizer applications had positive effects on increasing soil activities and nutrients compared with no fertilizer application.”
t0“sweet potato”
Claim · model-written summary
Split WS fertigation increased soil dehydrogenase (DHA) by 10.94 ~ 14.74% in year two.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- Split fertigation with WS fertilizere0
- Outcome
- soil dehydrogenase (DHA)e0
- Direction
- increasede0
- Value
- 10.94 ~ 14.74%e0
- Qualifier
- in the second yeare0
- Comparator
- a single applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split fertigation with WS fertilizer increased the activities of soil dehydrogenase (DHA) by 10.94 ~ 14.74%, alkaline phosphatase (ALP) by 4.97 ~ 5.13%, and soil organic matter (SOM) by 10.43 ~ 12.47% in the second year compared with a single application.”
t0“sweet potato”
Claim · model-written summary
Split WS fertigation increased alkaline phosphatase (ALP) by 4.97 ~ 5.13% in year two.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- Split fertigation with WS fertilizere0
- Outcome
- alkaline phosphatase (ALP)e0
- Direction
- increasede0
- Value
- 4.97 ~ 5.13%e0
- Qualifier
- in the second yeare0
- Comparator
- a single applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split fertigation with WS fertilizer increased the activities of soil dehydrogenase (DHA) by 10.94 ~ 14.74%, alkaline phosphatase (ALP) by 4.97 ~ 5.13%, and soil organic matter (SOM) by 10.43 ~ 12.47% in the second year compared with a single application.”
t0“sweet potato”
Claim · model-written summary
Split WS fertigation increased soil organic matter (SOM) by 10.43 ~ 12.47% in year two.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- Split fertigation with WS fertilizere0
- Outcome
- soil organic matter (SOM)e0
- Direction
- increasede0
- Value
- 10.43 ~ 12.47%e0
- Qualifier
- in the second yeare0
- Comparator
- a single applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split fertigation with WS fertilizer increased the activities of soil dehydrogenase (DHA) by 10.94 ~ 14.74%, alkaline phosphatase (ALP) by 4.97 ~ 5.13%, and soil organic matter (SOM) by 10.43 ~ 12.47% in the second year compared with a single application.”
t0“sweet potato”
Claim · model-written summary
Split fertigation increased dry matter accumulation in tuberous roots in both years.
- Taxon
- sweet potatoIpomoea batatase0t0
- Organ / stage
- tuberous rootse0
- Treatment
- split fertigatione0
- Outcome
- dry matter (DM) accumulatione0
- Direction
- increasinge0
- Qualifier
- In both yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both years, split fertigation exerted positive effects on increasing dry matter (DM) accumulation in tuberous roots and increased the productive efficiency in nitrogen (N), phosphorus (P), and potassium (K) fertilizers.”
t0“sweet potato”
Claim · model-written summary
Split fertigation increased productive efficiency of N, P and K fertilizers.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- split fertigatione0
- Outcome
- productive efficiency in nitrogen (N), phosphorus (P), and potassium (K) fertilizerse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both years, split fertigation exerted positive effects on increasing dry matter (DM) accumulation in tuberous roots and increased the productive efficiency in nitrogen (N), phosphorus (P), and potassium (K) fertilizers.”
t0“sweet potato”
Claim · model-written summary
BF increased soil sucrase by 7.05 ~ 17.83% over two years.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- BF applicatione0
- Outcome
- soil sucrasee0
- Direction
- increasede0
- Value
- 7.05 ~ 17.83%e0
- Qualifier
- two consecutive yearse0
- Comparator
- no BF applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BF application for two consecutive years increased the activities of soil sucrase by 7.05 ~ 17.83%, DHA by 18.65 ~ 21.34%, ALP by 6.87 ~ 7.03%, soil available P by 18.34 ~ 28.10%, and SOM by 8.18 ~ 10.17% compared with the no BF application.”
t0“sweet potato”
Claim · model-written summary
BF increased DHA by 18.65 ~ 21.34% over two years.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- BF applicatione0
- Outcome
- DHAe0
- Direction
- increasede0
- Value
- 18.65 ~ 21.34%e0
- Qualifier
- two consecutive yearse0
- Comparator
- no BF applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BF application for two consecutive years increased the activities of soil sucrase by 7.05 ~ 17.83%, DHA by 18.65 ~ 21.34%, ALP by 6.87 ~ 7.03%, soil available P by 18.34 ~ 28.10%, and SOM by 8.18 ~ 10.17% compared with the no BF application.”
t0“sweet potato”
Claim · model-written summary
BF increased ALP by 6.87 ~ 7.03% over two years.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- BF applicatione0
- Outcome
- ALPe0
- Direction
- increasede0
- Value
- 6.87 ~ 7.03%e0
- Qualifier
- two consecutive yearse0
- Comparator
- no BF applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BF application for two consecutive years increased the activities of soil sucrase by 7.05 ~ 17.83%, DHA by 18.65 ~ 21.34%, ALP by 6.87 ~ 7.03%, soil available P by 18.34 ~ 28.10%, and SOM by 8.18 ~ 10.17% compared with the no BF application.”
t0“sweet potato”
Claim · model-written summary
BF increased soil available P by 18.34 ~ 28.10% over two years.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- BF applicatione0
- Outcome
- soil available Pe0
- Direction
- increasede0
- Value
- 18.34 ~ 28.10%e0
- Qualifier
- two consecutive yearse0
- Comparator
- no BF applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BF application for two consecutive years increased the activities of soil sucrase by 7.05 ~ 17.83%, DHA by 18.65 ~ 21.34%, ALP by 6.87 ~ 7.03%, soil available P by 18.34 ~ 28.10%, and SOM by 8.18 ~ 10.17% compared with the no BF application.”
t0“sweet potato”
Claim · model-written summary
BF increased SOM by 8.18 ~ 10.17% over two years.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- BF applicatione0
- Outcome
- SOMe0
- Direction
- increasede0
- Value
- 8.18 ~ 10.17%e0
- Qualifier
- two consecutive yearse0
- Comparator
- no BF applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BF application for two consecutive years increased the activities of soil sucrase by 7.05 ~ 17.83%, DHA by 18.65 ~ 21.34%, ALP by 6.87 ~ 7.03%, soil available P by 18.34 ~ 28.10%, and SOM by 8.18 ~ 10.17% compared with the no BF application.”
t0“sweet potato”
Claim · model-written summary
BF increased root yield by 8.88 ~ 14.14%.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- BFe0
- Outcome
- root yielde0
- Direction
- increasede0
- Value
- 8.88 ~ 14.14%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BF also increased the root yield by 8.88 ~ 14.14%, the carotenoid content in tuberous roots by 20.38 ~ 30.64%, and the K utilization efficiency by 11.09 ~ 14.97%.”
t0“sweet potato”
Claim · model-written summary
BF increased carotenoid content by 20.38 ~ 30.64%.
- Taxon
- sweet potatoIpomoea batatase0t0
- Organ / stage
- tuberous rootse0
- Treatment
- BFe0
- Outcome
- carotenoid contente0
- Direction
- increasede0
- Value
- 20.38 ~ 30.64%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BF also increased the root yield by 8.88 ~ 14.14%, the carotenoid content in tuberous roots by 20.38 ~ 30.64%, and the K utilization efficiency by 11.09 ~ 14.97%.”
t0“sweet potato”
Claim · model-written summary
BF increased K utilization efficiency by 11.09 ~ 14.97%.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- BFe0
- Outcome
- K utilization efficiencye0
- Direction
- increasede0
- Value
- 11.09 ~ 14.97%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BF also increased the root yield by 8.88 ~ 14.14%, the carotenoid content in tuberous roots by 20.38 ~ 30.64%, and the K utilization efficiency by 11.09 ~ 14.97%.”
t0“sweet potato”
Claim · model-written summary
Combined BF and split fertigation was most conducive to soil nutrients, soil fertility, yield and quality.
- Taxon
- sweet potatoIpomoea batatase0t0
- Treatment
- combination of BF and split fertigatione0
- Outcome
- activation of soil nutrients, maintenance of soil fertility, and improvement in yield and qualitye0
- Direction
- most conducivee0
- Qualifier
- two consecutive yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combination of BF and split fertigation for two consecutive years was most conducive to the activation of soil nutrients, maintenance of soil fertility, and improvement in yield and quality, which could mitigate problems associated with the consecutive monoculture of sweet potato.”
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.