Abstract
Imbalance of nutrients limits crop yields. Although K fertilization receives sufficient attention in research and practice, Mg supply is rather neglected. The effect of Mg fertilization (0, 5 and 10 g Mg/m2), combined with two K fertilization rates (10 and 15 g K/m2), on potato production and soil exchangeable K and Mg was studied in a three-season microplot field experiment in the Novosibirsk region, Russia. Tuber yield did not respond to the increased K fertilization, but increased at 5 and decreased at 10 g Mg/m2. Total Mg concentration in tubers increased at 15 g K/m2, whereas N, P and K were not affected by fertilization. The tuber yield was maximal (3.6 kg/m2) at 10 g K/m2 and 5 g Mg/m2. Soil exchangeable Mg increased by the year, resulting in preferential development of the aboveground phytomass due to apparently increased Mg availability and K/Mg imbalance. Potato production depended on the year, strongly implicating weather conditions. Therefore, the weather and the chemical nature of K and Mg fertilizers (as pertinent to their release mode from fertilizer in soil), are important for balancing their proportions and amounts while assessing interactions among nutrients in potato production and adjusting regional fertilization strategies.
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Claims 9
Claim · model-written summary
Increasing K fertilizer did not change tuber yield.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- increased K fertilizatione0
- Outcome
- Tuber yielde0
- Direction
- did not responde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber yield did not respond to the increased K fertilization”
t0“Potato”
Claim · model-written summary
Tuber yield increased at 5 g Mg/m2.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 5 g Mg/m2e1
- Outcome
- Tuber yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber yield did not respond to the increased K fertilization, but increased at 5 and decreased at 10 g Mg/m2.”
t0“Potato”
e1“at 10 g K/m2 and 5 g Mg/m2”
Claim · model-written summary
Tuber yield decreased at 10 g Mg/m2.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 10 g Mg/m2e0
- Outcome
- Tuber yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber yield did not respond to the increased K fertilization, but increased at 5 and decreased at 10 g Mg/m2.”
t0“Potato”
Claim · model-written summary
Tuber Mg concentration increased at 15 g K/m2.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 15 g K/m2e0
- Outcome
- Total Mg concentration in tuberse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total Mg concentration in tubers increased at 15 g K/m2, whereas N, P and K were not affected by fertilization.”
t0“Potato”
Claim · model-written summary
Tuber N, P and K concentrations were unaffected by fertilization.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- fertilizatione0
- Outcome
- N, P and Ke0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total Mg concentration in tubers increased at 15 g K/m2, whereas N, P and K were not affected by fertilization.”
t0“Potato”
Claim · model-written summary
Tuber yield was maximal at 3.6 kg/m2 with 10 g K/m2 and 5 g Mg/m2.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 10 g K/m2 and 5 g Mg/m2e0
- Outcome
- tuber yielde0
- Direction
- maximale0
- Value
- 3.6 kg/m2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tuber yield was maximal (3.6 kg/m2) at 10 g K/m2 and 5 g Mg/m2.”
t0“Potato”
Claim · model-written summary
Soil exchangeable Mg increased by year.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- Soil exchangeable Mge0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil exchangeable Mg increased by the year, resulting in preferential development of the aboveground phytomass due to apparently increased Mg availability and K/Mg imbalance.”
t0“Potato”
Claim · model-written summary
Aboveground phytomass developed preferentially as Mg availability apparently increased.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- preferential development of the aboveground phytomasse0
- Qualifier
- apparently increased Mg availability and K/Mg imbalancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil exchangeable Mg increased by the year, resulting in preferential development of the aboveground phytomass due to apparently increased Mg availability and K/Mg imbalance.”
t0“Potato”
Claim · model-written summary
Potato production varied by year, implicating weather conditions.
- Taxon
- PotatoSolanum tuberosume0
- Outcome
- Potato productione0
- Qualifier
- weather conditionse0
- Setting
- yeare0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potato production depended on the year, strongly implicating weather conditions.”
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