Abstract
Abstract A steady and progressive increase in rapeseed yield was observed with each increment in applied nitrogen rates up to 213 kg/ha in both seasons. As for nitrogen application times, the analyzed data showed that adding a split dose (either 1/2 or 1/3) before the third irrigation was a common part between high yielding treatments in 1985/86 season. Nitrogen rates X application times interaction affected rapeseed yield significantly during the first winter season. The highest seed yield of 2.5 t/ha was obtained by adding 213 kg N/ha in two split doses at sowing and just before the third irrigation. The second yield value of 2.47 t/ha was produced under the same N rate when applied in two split doses before second and third irrigation. However, in the second season (1986/87), rapeseed plants did not exhibit significant responses to nitrogen rates X application times interaction. Chemical analyses showed that rapeseed oil content and its fatty acids (Palmetic, Stearic, Oleic, Linoleic, Linolenic, Arachidic and Erucic) percentages were not significantly affected by either nitrogen rates or application times in both seasons. A very low content of Erucic acid (0.1–0.9 %) in all tested sample was noticed.
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Claims 8
Claim · model-written summary
Rapeseed yield increased with nitrogen rate up to 213 kg/ha in both seasons.
- Taxon
- rapeseede0
- Treatment
- applied nitrogen rates up to 213 kg/hae0
- Outcome
- rapeseed yielde0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“A steady and progressive increase in rapeseed yield was observed with each increment in applied nitrogen rates up to 213 kg/ha in both seasons.”
Claim · model-written summary
Split nitrogen before the third irrigation was common among high yielding treatments in 1985/86.
Verbatim
e0“adding a split dose (either 1/2 or 1/3) before the third irrigation was a common part between high yielding treatments in 1985/86 season”
t0“Rapeseed”
Claim · model-written summary
Nitrogen rate and timing interacted significantly for yield in the first winter season.
Not reportedDirection
Verbatim
e0“Nitrogen rates X application times interaction affected rapeseed yield significantly during the first winter season.”
Claim · model-written summary
The top yield was 2.5 t/ha with 213 kg N/ha split between sowing and before the third irrigation.
- Taxon
- Rapeseedt0
- Treatment
- adding 213 kg N/ha in two split doses at sowing and just before the third irrigatione0
- Outcome
- seed yielde0
- Direction
- higheste0
- Value
- 2.5 t/hae0
Not reportedComparator
Verbatim
e0“The highest seed yield of 2.5 t/ha was obtained by adding 213 kg N/ha in two split doses at sowing and just before the third irrigation.”
t0“Rapeseed”
Claim · model-written summary
The second highest yield was 2.47 t/ha with the same rate split before the second and third irrigation.
- Taxon
- Rapeseedt0
- Treatment
- same N rate when applied in two split doses before second and third irrigatione0
- Outcome
- yielde0
- Value
- 2.47 t/hae0
Not reportedComparatorDirection
Verbatim
e0“The second yield value of 2.47 t/ha was produced under the same N rate when applied in two split doses before second and third irrigation.”
t0“Rapeseed”
Claim · model-written summary
The rate by timing interaction was not significant for yield in 1986/87.
Not reportedDirection
Verbatim
e0“in the second season (1986/87), rapeseed plants did not exhibit significant responses to nitrogen rates X application times interaction.”
Claim · model-written summary
Oil content and fatty acid percentages were not significantly affected by rate or timing in either season.
- Taxon
- rapeseede0
- Treatment
- nitrogen rates or application timese0
- Outcome
- oil content and its fatty acidse0
- Direction
- not significantly affectede0
Not reportedComparator
Verbatim
e0“rapeseed oil content and its fatty acids (Palmetic, Stearic, Oleic, Linoleic, Linolenic, Arachidic and Erucic) percentages were not significantly affected by either nitrogen rates or application times in both seasons.”
Claim · model-written summary
Erucic acid content was 0.1–0.9 % across tested samples.
Verbatim
e0“A very low content of Erucic acid (0.1–0.9 %) in all tested sample was noticed.”
t0“Rapeseed”
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