Abstract
Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato. Potassium was applied at six different rates (0, 60, 120, 240, 480 and 960 kg ha-1 of K2O), as K2SO4, and was placed during planting time in the furrow. Soil from the 0-200 mm layer was collected in the furrow, 20 and 48 days after plant emergence (DAE) to evaluate soil pH, K+, Ca2+ and Mg2+ contents and the total electrical conductivity (EC). A factorial design (6x2), with six K rates and two sampling times was set up in a randomized block design with four replications. The application of K fertilizer increased exchangeable K, did not affect pH and exchangeable Ca and Mg contents, but caused a linear increase of the soil K+/(Ca2++Mg2+)1/2 ratio as well as EC. At 20 DAE, the critical soil K+/(Ca2++Mg2+)1/2ratio and the EC associated with maximum tuber yield (30.5 Mg.ha-1, with 353.4 kg ha-1 of K2O) were 1.79 and 1.6 dS m-1, respectively. The highest soil K+/(Ca2++Mg2+)1/2 ratio and EC were obtained with the highest application of K fertilizer, which led to a reduction in the potato tuber yield.
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Claims 8
Claim · model-written summary
K fertilizer increased exchangeable K in the potato furrow soil.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- K fertilizere1
- Outcome
- exchangeable Ke1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato”
e1“The application of K fertilizer increased exchangeable K, did not affect pH and exchangeable Ca and Mg contents, but caused a linear increase of the soil K+/(Ca2++Mg2+)1/2 ratio as well as EC”
Claim · model-written summary
K fertilizer caused a linear increase of the soil K+/(Ca2++Mg2+)1/2 ratio and EC.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- K fertilizere1
- Outcome
- the soil K+/(Ca2++Mg2+)1/2 ratio as well as ECe1
- Direction
- linear increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato”
e1“The application of K fertilizer increased exchangeable K, did not affect pH and exchangeable Ca and Mg contents, but caused a linear increase of the soil K+/(Ca2++Mg2+)1/2 ratio as well as EC”
Claim · model-written summary
K fertilizer did not affect soil pH and exchangeable Ca and Mg contents.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- K fertilizere1
- Outcome
- pH and exchangeable Ca and Mg contentse1
- Direction
- did not affecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato”
e1“The application of K fertilizer increased exchangeable K, did not affect pH and exchangeable Ca and Mg contents, but caused a linear increase of the soil K+/(Ca2++Mg2+)1/2 ratio as well as EC”
Claim · model-written summary
The critical soil K+/(Ca2++Mg2+)1/2 ratio at 20 DAE was 1.79, associated with maximum tuber yield.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- critical soil K+/(Ca2++Mg2+)1/2e2
- Value
- 1.79e2
- Qualifier
- associated with maximum tuber yielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato”
e2“At 20 DAE, the critical soil K+/(Ca2++Mg2+)1/2ratio and the EC associated with maximum tuber yield (30.5 Mg.ha-1, with 353.4 kg ha-1 of K2O) were 1.79 and 1.6 dS m-1, respectively”
Claim · model-written summary
The critical EC at 20 DAE was 1.6 dS m-1, associated with maximum tuber yield.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- ECe2
- Value
- 1.6 dS m-1e2
- Qualifier
- associated with maximum tuber yielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato”
e2“At 20 DAE, the critical soil K+/(Ca2++Mg2+)1/2ratio and the EC associated with maximum tuber yield (30.5 Mg.ha-1, with 353.4 kg ha-1 of K2O) were 1.79 and 1.6 dS m-1, respectively”
Claim · model-written summary
Maximum tuber yield was 30.5 Mg.ha-1 with 353.4 kg ha-1 of K2O.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- maximum tuber yielde2
- Value
- 30.5 Mg.ha-1e2
- Qualifier
- with 353.4 kg ha-1 of K2Oe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato”
e2“At 20 DAE, the critical soil K+/(Ca2++Mg2+)1/2ratio and the EC associated with maximum tuber yield (30.5 Mg.ha-1, with 353.4 kg ha-1 of K2O) were 1.79 and 1.6 dS m-1, respectively”
Claim · model-written summary
The highest soil K+/(Ca2++Mg2+)1/2 ratio and EC were obtained at the highest K fertilizer application.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- the highest application of K fertilizere3
- Outcome
- soil K+/(Ca2++Mg2+)1/2 ratio and ECe3
- Direction
- higheste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato”
e3“The highest soil K+/(Ca2++Mg2+)1/2 ratio and EC were obtained with the highest application of K fertilizer, which led to a reduction in the potato tuber yield”
Claim · model-written summary
The highest K fertilizer application reduced potato tuber yield.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- the highest application of K fertilizere3
- Outcome
- potato tuber yielde3
- Direction
- reductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil K+ to Ca2+ and Mg2+ ratio as well as the total salinity were evaluated in response to potassium fertilizer application onto potato”
e3“The highest soil K+/(Ca2++Mg2+)1/2 ratio and EC were obtained with the highest application of K fertilizer, which led to a reduction in the potato tuber yield”
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