Abstract
Abstract A field experiment was carried out during the fall season of 2021 at the research station of the University of Anbar - College of Agriculture, to find out the effect of humic acid and the level of nano and conventional nitrogen in the prepared and absorbed nitrogen element and the yield of potato cultivar Rivera, the experiment included two factors: the two sources of nitrogen and their levels, represented by the traditional nitrogen NT 1 , NT 2 at the level of 150 and 300 kg N ha -1 in the form of (urea fertilizer) and the nano-nitrogen, Nn 1 , Nn 2 , Nn 3 at level 15, 30 and 45 kg N ha -1 sequentially in addition to the control treatment. The second factor was the addition of humic acid H 1 at the level of 100 kg ha -1 in addition to the control treatment (without addition) and according to the RCBD randomized complete block design with three replications. The results were statistically analyzed and the means of the coefficients were compared at the 0.05 probability level to test for the least significant difference. The results of the study showed the following: The treatments achieved a remarkable variation in nitrogen content in the vegetative part and tubers, and the interaction coefficients between humic acid and urea achieved the highest nitrogen content in the vegetative part and tubers, as well as the total nitrogen uptake. While the Nn 3 H 1 treatment achieved the highest value of the marketing outcome. The availability of ammonium and nitrate in the soil increased with the increase in fertilization levels for the two fertilizer exporters, and the highest availability was achieved in the presence of humic acid. There was a significant effect of adding humic acid on (AE), which amounted to 59.0% compared to 49.0%, and the lowest decrease in field efficiency was with conventional nitrogen fertilizer treatments compared to the highest field efficiency achieved with nano-nitrogen addition treatments. While the highest value of the field efficiency when treating the interference was Nn 3 H 1 . The availability of ammonium and nitrate in the soil increased with the increase in fertilization levels for the two fertilizer exporters, and the highest availability was achieved in the presence of humic acid. There was a significant effect of adding humic acid on AE, which amounted to 59.0% compared to 49.0%, and the lowest decrease in field efficiency was with conventional nitrogen fertilizer treatments compared to the highest field efficiency achieved with nano-nitrogen addition treatments. While the highest value of the field efficiency when treating the interference was Nn 3 H 1 . The availability of ammonium and nitrate in the soil increased with the increase in fertilization levels for the two fertilizer exporters, and the highest availability was achieved in the presence of humic acid. There was a significant effect of adding humic acid on (AE), which amounted to 59.0% compared to 49.0%, and the lowest decrease in field efficiency was with conventional nitrogen fertilizer treatments compared to the highest field efficiency achieved with nano-nitrogen addition treatments. While the highest value of the field efficiency when treating the interference was Nn 3 H 1 . The addition of humic acid achieved an efficient nitrogen recovery NUE amounted to 60.13% compared to 44.45%. The treatment of adding nano-nitrogen Nn 1 , Nn 2 and Nn 3 recorded recovery efficiency of the element amounted to 82.47, 80.14 and 77.89% respectively, and was superior to the traditional fertilization treatments NT 1 , NT 2 , which amounted to 39.72, 29.81% respectively, while the dual interaction treatments achieved the highest recovery efficiency of the element which reached to the treatments of the nano-source Nn 1 H 1 , Nn 2 H 1 , Nn 3 H 1 (95.25, 92.08 and 88.71%) sequentially. Compared with the levels of the traditional source NT 1 H 1 , NT 2 H 1 (45.35 and 31.95%), respectively.
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Claims 20
Claim · model-written summary
The humic acid and urea interaction gave the highest nitrogen content in the vegetative part and tubers of potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- humic acid and ureae1
- Outcome
- nitrogen content in the vegetative part and tuberse1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“the interaction coefficients between humic acid and urea achieved the highest nitrogen content in the vegetative part and tubers”
Claim · model-written summary
The humic acid and urea interaction gave the highest total nitrogen uptake in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- humic acid and ureae1
- Outcome
- total nitrogen uptakee2
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“the interaction coefficients between humic acid and urea achieved the highest nitrogen content in the vegetative part and tubers”
e2“as well as the total nitrogen uptake”
Claim · model-written summary
The Nn 3 H 1 treatment gave the highest marketing outcome in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Nn 3 H 1e4
- Outcome
- marketing outcomee4
- Direction
- higheste4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e4“While the Nn 3 H 1 treatment achieved the highest value of the marketing outcome”
Claim · model-written summary
Soil ammonium and nitrate availability increased with fertilization levels in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- fertilization levelse5
- Outcome
- availability of ammonium and nitrate in the soile5
- Direction
- increasede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e5“the marketing outcome. The availability of ammonium and nitrate in the soil increased with the increase in fertilization levels for the two fertilizer exporters”
Claim · model-written summary
Soil ammonium and nitrate availability was highest in the presence of humic acid in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- humic acide6
- Outcome
- availability of ammonium and nitrate in the soile6
- Direction
- higheste6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e6“the marketing outcome. The availability of ammonium and nitrate in the soil increased with the increase in fertilization levels for the two fertilizer exporters, and the highest availability was achieved in the presence of humic acid”
Claim · model-written summary
Humic acid had a significant effect on AE, which was 59.0% compared with 49.0% in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- adding humic acide7
- Outcome
- AEe7
- Value
- 59.0%e7
- Qualifier
- compared to 49.0%e7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e7“There was a significant effect of adding humic acid on AE, which amounted to 59.0% compared to 49.0%”
Claim · model-written summary
Conventional nitrogen fertilizer treatments gave the lowest decrease in field efficiency in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- conventional nitrogen fertilizer treatmentse2
- Outcome
- field efficiencye2
- Direction
- lowest decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e2“on AE, which amounted to 59.0% compared to 49.0%, and the lowest decrease in field efficiency was with conventional nitrogen fertilizer treatments”
Claim · model-written summary
Nano-nitrogen addition treatments gave the highest field efficiency compared with conventional nitrogen fertilizer treatments in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- nano-nitrogen addition treatmentse2
- Outcome
- field efficiencye2
- Direction
- higheste2
- Comparator
- conventional nitrogen fertilizer treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e2“on AE, which amounted to 59.0% compared to 49.0%, and the lowest decrease in field efficiency was with conventional nitrogen fertilizer treatments compared to the highest field efficiency achieved with nano-nitrogen addition treatments”
Claim · model-written summary
The Nn 3 H 1 dual treatment gave the highest field efficiency in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Nn 3 H 1e3
- Outcome
- field efficiencye3
- Direction
- highest valuee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e3“While the highest value of the field efficiency when treating the interference was Nn 3 H 1 . The addition of humic acid”
Claim · model-written summary
Humic acid addition gave an efficient nitrogen recovery (NUE) of 60.13% compared with 44.45% in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- humic acide2
- Outcome
- NUEe2
- Value
- 60.13%e2
- Qualifier
- compared to 44.45%e2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e2“The addition of humic acid achieved an efficient nitrogen recovery NUE amounted to 60.13% compared to 44.45%”
Claim · model-written summary
Nano-nitrogen Nn 1 gave a recovery efficiency of 82.47, superior to traditional fertilization in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Nn 1e1
- Outcome
- recovery efficiencye1
- Direction
- superiore1
- Value
- 82.47e1
- Comparator
- traditional fertilization treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“The treatment of adding nano-nitrogen Nn 1 , Nn 2 and Nn 3 recorded recovery efficiency of the element amounted to 82.47, 80.14 and 77.89% respectively, and was superior to the traditional fertilization treatments NT 1 , NT 2 , which amounted to 39.72, 29.81% respectively”
Claim · model-written summary
Nano-nitrogen Nn 2 gave a recovery efficiency of 80.14, superior to traditional fertilization in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Nn 2e1
- Outcome
- recovery efficiencye1
- Direction
- superiore1
- Value
- 80.14e1
- Comparator
- traditional fertilization treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“The treatment of adding nano-nitrogen Nn 1 , Nn 2 and Nn 3 recorded recovery efficiency of the element amounted to 82.47, 80.14 and 77.89% respectively, and was superior to the traditional fertilization treatments NT 1 , NT 2 , which amounted to 39.72, 29.81% respectively”
Claim · model-written summary
Nano-nitrogen Nn 3 gave a recovery efficiency of 77.89, superior to traditional fertilization in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Nn 3e1
- Outcome
- recovery efficiencye1
- Direction
- superiore1
- Value
- 77.89e1
- Comparator
- traditional fertilization treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“The treatment of adding nano-nitrogen Nn 1 , Nn 2 and Nn 3 recorded recovery efficiency of the element amounted to 82.47, 80.14 and 77.89% respectively, and was superior to the traditional fertilization treatments NT 1 , NT 2 , which amounted to 39.72, 29.81% respectively”
Claim · model-written summary
Traditional nitrogen NT 1 gave a recovery efficiency of 39.72 in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- NT 1e1
- Outcome
- recovery efficiencye1
- Value
- 39.72e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“The treatment of adding nano-nitrogen Nn 1 , Nn 2 and Nn 3 recorded recovery efficiency of the element amounted to 82.47, 80.14 and 77.89% respectively, and was superior to the traditional fertilization treatments NT 1 , NT 2 , which amounted to 39.72, 29.81% respectively”
Claim · model-written summary
Traditional nitrogen NT 2 gave a recovery efficiency of 29.81 in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- NT 2e1
- Outcome
- recovery efficiencye1
- Value
- 29.81e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“The treatment of adding nano-nitrogen Nn 1 , Nn 2 and Nn 3 recorded recovery efficiency of the element amounted to 82.47, 80.14 and 77.89% respectively, and was superior to the traditional fertilization treatments NT 1 , NT 2 , which amounted to 39.72, 29.81% respectively”
Claim · model-written summary
Dual treatment Nn 1 H 1 gave a recovery efficiency of 95.25 in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Nn 1 H 1e1
- Outcome
- recovery efficiencye1
- Value
- 95.25e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“the dual interaction treatments achieved the highest recovery efficiency of the element which reached to the treatments of the nano-source Nn 1 H 1 , Nn 2 H 1 , Nn 3 H 1 (95.25, 92.08 and 88.71%) sequentially”
Claim · model-written summary
Dual treatment Nn 2 H 1 gave a recovery efficiency of 92.08 in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Nn 2 H 1e1
- Outcome
- recovery efficiencye1
- Value
- 92.08e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“the dual interaction treatments achieved the highest recovery efficiency of the element which reached to the treatments of the nano-source Nn 1 H 1 , Nn 2 H 1 , Nn 3 H 1 (95.25, 92.08 and 88.71%) sequentially”
Claim · model-written summary
Dual treatment Nn 3 H 1 gave a recovery efficiency of 88.71 in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Nn 3 H 1e1
- Outcome
- recovery efficiencye1
- Value
- 88.71e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“the dual interaction treatments achieved the highest recovery efficiency of the element which reached to the treatments of the nano-source Nn 1 H 1 , Nn 2 H 1 , Nn 3 H 1 (95.25, 92.08 and 88.71%) sequentially”
Claim · model-written summary
Traditional dual treatment NT 1 H 1 gave a recovery efficiency of 45.35 in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- NT 1 H 1e2
- Outcome
- recovery efficiencye1
- Value
- 45.35e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“the dual interaction treatments achieved the highest recovery efficiency of the element which reached to the treatments of the nano-source Nn 1 H 1 , Nn 2 H 1 , Nn 3 H 1 (95.25, 92.08 and 88.71%) sequentially”
e2“Compared with the levels of the traditional source NT 1 H 1 , NT 2 H 1 (45.35 and 31.95%), respectively”
Claim · model-written summary
Traditional dual treatment NT 2 H 1 gave a recovery efficiency of 31.95 in potato.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- NT 2 H 1e2
- Outcome
- recovery efficiencye1
- Value
- 31.95e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“the Potato Yield”
e1“the dual interaction treatments achieved the highest recovery efficiency of the element which reached to the treatments of the nano-source Nn 1 H 1 , Nn 2 H 1 , Nn 3 H 1 (95.25, 92.08 and 88.71%) sequentially”
e2“Compared with the levels of the traditional source NT 1 H 1 , NT 2 H 1 (45.35 and 31.95%), respectively”
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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.