Abstract
Potassium (K) is one of the most absorbed nutrients by cassava because it acts on the synthesis and starch accumulation in the storage roots. Here, we show that K application at the beginning of the second vegetative cycle of cassava submitted to shoot pruning increased the yield of roots and starch, and the nutrient demand of plants. Application of 45–89 kg ha−1 dipotassium oxide (K2O) in the second cycle increased the yield of storage roots and starch from 36–49% and K applied at this time had a greater effect on the synthesis and allocation of starch in the storage roots. K supply increased the accumulation of N and S by 2.0- to 3.0-fold and the accumulation of other nutrients by 1.4- to 1.7-fold. The removal of phosphorus (P), manganese (Mn), and zinc (Zn) by storage roots was not affected by K application, whereas the removal of other nutrients increased by 1.3- to 4.3-fold.
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Claims 10
Claim · model-written summary
Second-cycle potassium application increased cassava storage-root yield by 36–49%.
- Taxon
- cassava
Manihot esculentat0 - Treatment
- 45–89 kg ha−1 dipotassium oxide (K2O)e0
- Outcome
- yield of storage rootse0
- Direction
- increasede0
- Value
- 36–49%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 45–89 kg ha−1 dipotassium oxide (K2O) in the second cycle increased the yield of storage roots and starch from 36–49%”
t0“cassava”
Claim · model-written summary
Second-cycle potassium application increased cassava starch yield by 36–49%.
- Taxon
- cassavaManihot esculentat0
- Treatment
- 45–89 kg ha−1 dipotassium oxide (K2O)e0
- Outcome
- starche0
- Direction
- increasede0
- Value
- 36–49%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 45–89 kg ha−1 dipotassium oxide (K2O) in the second cycle increased the yield of storage roots and starch from 36–49%”
t0“cassava”
Claim · model-written summary
Potassium applied in the second cycle had a greater effect on starch synthesis and allocation in cassava storage roots.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- storage rootse0
- Treatment
- K applied at this timee0
- Outcome
- synthesis and allocation of starch in the storage rootse0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K applied at this time had a greater effect on the synthesis and allocation of starch in the storage roots.”
t0“cassava”
Claim · model-written summary
Potassium supply increased nitrogen accumulation in cassava by 2.0- to 3.0-fold.
- Taxon
- cassavaManihot esculentat0
- Treatment
- K supplye0
- Outcome
- accumulation of Ne0
- Direction
- increasede0
- Value
- 2.0- to 3.0-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K supply increased the accumulation of N and S by 2.0- to 3.0-fold”
t0“cassava”
Claim · model-written summary
Potassium supply increased sulfur accumulation in cassava by 2.0- to 3.0-fold.
- Taxon
- cassavaManihot esculentat0
- Treatment
- K supplye0
- Outcome
- Se0
- Direction
- increasede0
- Value
- 2.0- to 3.0-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K supply increased the accumulation of N and S by 2.0- to 3.0-fold”
t0“cassava”
Claim · model-written summary
Potassium supply increased accumulation of other nutrients in cassava by 1.4- to 1.7-fold.
- Taxon
- cassavaManihot esculentat0
- Treatment
- K supplye0
- Outcome
- accumulation of other nutrientse0
- Direction
- increasede0
- Value
- 1.4- to 1.7-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K supply increased the accumulation of N and S by 2.0- to 3.0-fold and the accumulation of other nutrients by 1.4- to 1.7-fold”
t0“cassava”
Claim · model-written summary
Potassium application did not affect phosphorus removal by cassava storage roots.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- storage rootse0
- Treatment
- K applicatione0
- Outcome
- removal of phosphorus (P)e0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The removal of phosphorus (P), manganese (Mn), and zinc (Zn) by storage roots was not affected by K application”
t0“cassava”
Claim · model-written summary
Potassium application did not affect manganese removal by cassava storage roots.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- storage rootse0
- Treatment
- K applicatione0
- Outcome
- manganese (Mn)e0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The removal of phosphorus (P), manganese (Mn), and zinc (Zn) by storage roots was not affected by K application”
t0“cassava”
Claim · model-written summary
Potassium application did not affect zinc removal by cassava storage roots.
- Taxon
- cassavaManihot esculentat0
- Organ / stage
- storage rootse0
- Treatment
- K applicatione0
- Outcome
- zinc (Zn)e0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The removal of phosphorus (P), manganese (Mn), and zinc (Zn) by storage roots was not affected by K application”
t0“cassava”
Claim · model-written summary
Potassium application increased removal of other nutrients by cassava storage roots by 1.3- to 4.3-fold.
- Taxon
- cassavaManihot esculentat0
- Treatment
- potassium fertilizert0
- Outcome
- removal of other nutrientse0
- Direction
- increasede0
- Value
- 1.3- to 4.3-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the removal of other nutrients increased by 1.3- to 4.3-fold”
t0“Yield and nutritional requirements of cassava in response to potassium fertilizer in the second cycle”
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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.