Abstract
The results of the long-term researches on determination of the effect of mineral fertilizers on the winter wheat yield after sunflower in the steppe zone of Ukraine are presented. The high efficiency of complete mineral fertilizer (N90P60K60) application in pre-sowing cultivation that provides 2.29 t/ha increase in yield in comparison with control (without fertilizers) is established. N60P60K60 norm of fertilization before sowing is also relevant especially in the case of optimal weather conditions and subsequent fertilization of crops with nitrogen. At the same time, the increase of applied nitrogen share up to N120-180 as part of complete fertilizer does not lead to a significant yields increase compared to other variants, and in some years, in particular, it can even cause the yield decrease in drought conditions during grain swelling and formation. It has been proven that winter wheat sowing without any fertilizers application or applying small amount of fertilizers before sowing (N16P16K16 та N30P60K60) eventually causes a significant reduction in yield compared to better variants. In most cases that cannot be compensated by nitrogen fertilization in the first part of spring-summer vegetation.
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Claims 8
Claim · model-written summary
Pre-sowing N90P60K60 increased winter wheat yield by 2.29 t/ha against no fertilizer.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- N90P60K60e0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- 2.29 t/hae0
- Comparator
- control (without fertilizers)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high efficiency of complete mineral fertilizer (N90P60K60) application in pre-sowing cultivation that provides 2.29 t/ha increase in yield in comparison with control (without fertilizers)”
t0“winter wheat yield after sunflower”
Claim · model-written summary
The authors consider pre-sowing N60P60K60 relevant under optimal weather with later nitrogen fertilization.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- N60P60K60 norm of fertilization before sowinge0
- Qualifier
- optimal weather conditions and subsequent fertilization of crops with nitrogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N60P60K60 norm of fertilization before sowing is also relevant especially in the case of optimal weather conditions and subsequent fertilization of crops with nitrogen”
t0“winter wheat yield after sunflower”
Claim · model-written summary
Increasing applied nitrogen to N120-180 did not significantly increase winter wheat yield relative to other variants.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- N120-180e0
- Outcome
- yieldse0
- Direction
- does not lead to a significant yields increasee0
- Comparator
- other variantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase of applied nitrogen share up to N120-180 as part of complete fertilizer does not lead to a significant yields increase compared to other variants”
t0“winter wheat yield after sunflower”
Claim · model-written summary
N120-180 fertilizer sometimes decreased winter wheat yield under drought during grain swelling and formation.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- N120-180e1
- Outcome
- yielde0
- Direction
- decreasee0
- Qualifier
- drought conditions during grain swelling and formatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it can even cause the yield decrease in drought conditions during grain swelling and formation”
e1“the increase of applied nitrogen share up to N120-180 as part of complete fertilizer”
t0“winter wheat yield after sunflower”
Claim · model-written summary
No pre-sowing fertilizer significantly reduced winter wheat yield against better variants.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- without any fertilizers applicatione0
- Outcome
- yielde0
- Direction
- reductione0
- Comparator
- better variantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter wheat sowing without any fertilizers application or applying small amount of fertilizers before sowing (N16P16K16 та N30P60K60) eventually causes a significant reduction in yield compared to better variants”
Claim · model-written summary
Pre-sowing N16P16K16 significantly reduced winter wheat yield against better variants.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- N16P16K16e0
- Outcome
- yielde0
- Direction
- reductione0
- Comparator
- better variantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter wheat sowing without any fertilizers application or applying small amount of fertilizers before sowing (N16P16K16 та N30P60K60) eventually causes a significant reduction in yield compared to better variants”
Claim · model-written summary
Pre-sowing N30P60K60 significantly reduced winter wheat yield against better variants.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- N30P60K60e0
- Outcome
- yielde0
- Direction
- reductione0
- Comparator
- better variantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter wheat sowing without any fertilizers application or applying small amount of fertilizers before sowing (N16P16K16 та N30P60K60) eventually causes a significant reduction in yield compared to better variants”
Claim · model-written summary
In most cases spring-summer nitrogen fertilization could not compensate winter wheat yield reduction from no or low pre-sowing fertilizer.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- nitrogen fertilization in the first part of spring-summer vegetatione0
- Outcome
- reduction in yielde1
- Direction
- cannot be compensatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In most cases that cannot be compensated by nitrogen fertilization in the first part of spring-summer vegetation”
e1“winter wheat sowing without any fertilizers application or applying small amount of fertilizers before sowing (N16P16K16 та N30P60K60) eventually causes a significant reduction in yield compared to better variants”
The same questions in other papers
fertilization · yield · Triticum aestivum (wheat)Positive and negative results
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