Abstract
The objective of this study was to evaluate influence of different nitrogen rate and in-row seed spacing on yield, tuber size distribution and nitrogen use efficiency characteristics. Field experiment was conducted at the Gospic on private farm during 2009 growth season. The experiment used a split plot arrangement of treatments in randomized complete block design in four repetitions. Main plots were N supply rates (0, 50, 100, 150, 200 i 250 kg N ha -1 ). Sub plots were in-row seed space (25, 30 and 35 cm). Respectively to control, total tuber yield increased by increased N rate up to 150 kg N ha -1 (20.5 t ha -1 ). As N rate increased ratio of small tubers decreased and the lowest ratio of small tubers (9.86%) was obtained at 150 kg N ha -1 . The total tuber yield decreased for 22% as in-row space increased from 25 to 35 cm, but ratio of medium and large tubers increased marginally. The increased N rate decreased nitrogen use efficiency (NUE), nitrogen utilization efficiency (NUtE) and nitrogen uptake efficiency (NUpE) significantly respectively to control. Varying in-row seed spacing from 25 cm to 35 cm decreased significantly N use efficiency characteristics (NUE, NUtE and NUpE) too. Because there is no the interaction effect it is necessary to continue investigation to find out the best combination N rate x plant density for potato growers.
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Claims 7
Claim · model-written summary
Total tuber yield increased with nitrogen rate up to 150 kg N ha -1, reaching 20.5 t ha -1, relative to control.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- N rate up to 150 kg N ha -1e1
- Outcome
- total tuber yielde1
- Direction
- increasede1
- Value
- 20.5 t ha -1e1
- Comparator
- controle1
- Setting
- Gospice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the potato (Solanum tuberosum L.)”
e0“Field experiment was conducted at the Gospic on private farm during 2009 growth season”
e1“Respectively to control, total tuber yield increased by increased N rate up to 150 kg N ha -1 (20.5 t ha -1)”
Claim · model-written summary
The lowest ratio of small tubers, 9.86%, was obtained at 150 kg N ha -1, and the ratio of small tubers decreased as N rate increased.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- N ratee2
- Outcome
- ratio of small tuberse2
- Direction
- decreasede2
- Value
- 9.86%e2
- Setting
- Gospice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the potato (Solanum tuberosum L.)”
e0“Field experiment was conducted at the Gospic on private farm during 2009 growth season”
e2“As N rate increased ratio of small tubers decreased and the lowest ratio of small tubers (9.86%) was obtained at 150 kg N ha -1”
Claim · model-written summary
Total tuber yield decreased by 22% as in-row space increased from 25 to 35 cm.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- in-row space increased from 25 to 35 cme3
- Outcome
- total tuber yielde3
- Direction
- decreasede3
- Value
- 22%e3
- Setting
- Gospice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the potato (Solanum tuberosum L.)”
e0“Field experiment was conducted at the Gospic on private farm during 2009 growth season”
e3“The total tuber yield decreased for 22% as in-row space increased from 25 to 35 cm, but ratio of medium and large tubers increased marginally”
Claim · model-written summary
The ratio of medium and large tubers increased marginally as in-row space increased from 25 to 35 cm.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- in-row space increased from 25 to 35 cme3
- Outcome
- ratio of medium and large tuberse3
- Direction
- increasede3
- Qualifier
- marginallye3
- Setting
- Gospice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the potato (Solanum tuberosum L.)”
e0“Field experiment was conducted at the Gospic on private farm during 2009 growth season”
e3“The total tuber yield decreased for 22% as in-row space increased from 25 to 35 cm, but ratio of medium and large tubers increased marginally”
Claim · model-written summary
Increased N rate significantly decreased nitrogen use efficiency, nitrogen utilization efficiency and nitrogen uptake efficiency relative to control.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- increased N ratee4
- Outcome
- nitrogen use efficiency (NUE), nitrogen utilization efficiency (NUtE) and nitrogen uptake efficiency (NUpE)e4
- Direction
- decreasede4
- Comparator
- controle4
- Setting
- Gospice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the potato (Solanum tuberosum L.)”
e0“Field experiment was conducted at the Gospic on private farm during 2009 growth season”
e4“The increased N rate decreased nitrogen use efficiency (NUE), nitrogen utilization efficiency (NUtE) and nitrogen uptake efficiency (NUpE) significantly respectively to control”
Claim · model-written summary
Varying in-row seed spacing from 25 cm to 35 cm significantly decreased nitrogen use efficiency characteristics.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- in-row seed spacing from 25 cm to 35 cme5
- Outcome
- N use efficiency characteristics (NUE, NUtE and NUpE)e5
- Direction
- decreasede5
- Setting
- Gospice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the potato (Solanum tuberosum L.)”
e0“Field experiment was conducted at the Gospic on private farm during 2009 growth season”
e5“Varying in-row seed spacing from 25 cm to 35 cm decreased significantly N use efficiency characteristics (NUE, NUtE and NUpE) too”
Claim · model-written summary
No interaction effect between N rate and plant density was found.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- N rate x plant densitye6
- Outcome
- interaction effecte6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the potato (Solanum tuberosum L.)”
e6“Because there is no the interaction effect it is necessary to continue investigation to find out the best combination N rate x plant density for potato growers”
The same questions in other papers
nitrogen · yield · Solanum tuberosum (potato)Results differ
108 papers in the same direction as this paper · 20 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
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See all 132 papers →nitrogen · nutrient: efficiency · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
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See all 14 papers →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.