Abstract
New forms of mineral fertilizers containing bioactive components or substances controlling dissolution of granules in the soil are being developed to increase their efficiency and decrease negative environmental impacts. The present study was aimed to compare the effects of different complex fertilizers and complex fertilizer containing a nitrification inhibitor DMPP (3,4-dimethylpyrazole-phosphate) on barley and potato yield and quality, and nitrogen leaching. Experiments were carried out at Vok Branch of the Lithuanian Research Centre for Agriculture and Forestry during 2012-2016. Experiments were performed in lysimetric facilities on a sandy loam Luvisol (LV) with a surface area of 1.75 m 2 and a test soil layer of 0.60 m thickness. Experimental treatments: 1) granular simple NPK fertilizers, 2) complex fertilizer nitrogenphosphate NP 33:3, 3) complex NPK fertilizer with bioactive components Eurofertil 35 and 4) complex NPK fertilizer with a nitrification inhibitor NovaTec classic. The investigated simple NPK and complex fertilizers (nitrogenphosphate NP 33:3, Eurofertil 35 and NovaTec classic) had a similar effect on the grain yield of barley, but significantly increased (7.7%, P < 0.05) the tuber yield of potatoes. Application of the fertilizer with a nitrification inhibitor improved the quality of barley grain and potato tubers and lowered the concentration of nitrates in tubers. Compared with simple fertilizers (ammonium nitrate, granular superphosphate and potassium chloride), the application of complex fertilizers nitrogenphosphate NP 33:3, Eurofertil 35, containing bioactive substances, and NovaTec classic, supplemented with a nitrification inhibitor, affected the dynamics of nitrogen leaching during specific periods, but no significant changes were estimated for nitrogen leaching per hydrological year.
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Claims 7
Claim · model-written summary
Simple and complex fertilizers had similar effects on barley grain yield.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- complex fertilizerse0
- Outcome
- grain yielde0
- Direction
- similare0
- Comparator
- simple NPKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The investigated simple NPK and complex fertilizers (nitrogenphosphate NP 33:3, Eurofertil 35 and NovaTec classic) had a similar effect on the grain yield of barley”
Claim · model-written summary
Complex fertilizers increased potato tuber yield 7.7%.
- Taxon
- potatoes
Solanum tuberosume0 - Treatment
- complex fertilizerse1
- Outcome
- tuber yielde0
- Direction
- increasede0
- Value
- 7.7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but significantly increased (7.7%, P < 0.05) the tuber yield of potatoes.”
e1“simple NPK and complex fertilizers”
Claim · model-written summary
Fertilizer with a nitrification inhibitor improved barley grain quality.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- fertilizer with a nitrification inhibitore0
- Outcome
- quality of barley graine0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of the fertilizer with a nitrification inhibitor improved the quality of barley grain and potato tubers”
Claim · model-written summary
Fertilizer with a nitrification inhibitor improved potato tuber quality.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- fertilizer with a nitrification inhibitore0
- Outcome
- potato tuberse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of the fertilizer with a nitrification inhibitor improved the quality of barley grain and potato tubers”
e1“potato yield and quality”
Claim · model-written summary
Fertilizer with a nitrification inhibitor lowered nitrate concentration in tubers.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- fertilizer with a nitrification inhibitore2
- Outcome
- concentration of nitrates in tuberse0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lowered the concentration of nitrates in tubers.”
e1“potato yield and quality”
e2“Application of the fertilizer with a nitrification inhibitor”
Claim · model-written summary
Complex fertilizers changed nitrogen leaching dynamics during specific periods.
Not reportedTaxonDirection
Verbatim
e0“Compared with simple fertilizers (ammonium nitrate, granular superphosphate and potassium chloride), the application of complex fertilizers nitrogenphosphate NP 33:3, Eurofertil 35, containing bioactive substances, and NovaTec classic, supplemented with a nitrification inhibitor, affected the dynamics of nitrogen leaching during specific periods”
Claim · model-written summary
Complex fertilizers did not significantly change annual nitrogen leaching.
- Treatment
- complex fertilizerse1
- Outcome
- nitrogen leaching per hydrological yeare0
- Direction
- no significant changese0
- Comparator
- simple fertilizerse2
Not reportedTaxon
Verbatim
e0“but no significant changes were estimated for nitrogen leaching per hydrological year.”
e1“application of complex fertilizers”
e2“Compared with simple fertilizers”
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