Abstract
In order to study the effect of planting dates and different irrigation regimes on yield and yield components of six canola cultivars, an experiment was conducted in two growing seasons; 2008 to 2009 and 2009 to 2010. Six canola cultivars (Zarfam, GKH1103, GKH1605, GKH2005, GKH305 and GKH3705) were cultivated in two different dates (October 7th and November 6th) with two levels of irrigation regimes (irrigation after 60 mm evaporation from Class A evaporation pan and irrigation interrupting at flowering stage). The experiments were conducted in randomized complete block design arrangement in split factorial with four replications. The results demonstrated that late planting date and interrupting of irrigation at flowering stage significantly decreased growth, yield and yield components the of canola cultivars. In addition, oil yield was affected by late planting and water stress and it was dramatically decreased. Also, there was no significant difference among the cultivars with respect to oil percentage. The highest seed yield (5930.4 kg. ha-1) was obtained from GKH1103 cultivars planted on October 7th under the conditions of full irrigation. Seed yield and oil yield in the second year was more than that of the first year; this increase was related to the increase in seed weight and pod number per plant but not to number of seed per pod. In general, canola cultivation on November 6th considerably decreased seed and oil yield and it is an important point to achieve desirable yield to seed sowing not done later than October 7th. Additionally, complementary irrigation was very important to gain high yield in canola under the conditions of this study. Key words: Canola, planting date, water stress, yield and yield components.
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Claims 10
Claim · model-written summary
Late planting (November 6th) significantly decreased canola growth, yield and yield components compared with October 7th.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napust0 - Treatment
- late planting datee1
- Outcome
- growth, yield and yield componentse1
- Direction
- decreasede1
- Comparator
- October 7the2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“The results demonstrated that late planting date and interrupting of irrigation at flowering stage significantly decreased growth, yield and yield components the of canola cultivars”
e2“cultivated in two different dates (October 7th and November 6th) with two levels of irrigation regimes”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Interrupting irrigation at flowering significantly decreased canola growth, yield and yield components compared with full irrigation after 60 mm evaporation.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- interrupting of irrigation at flowering stagee1
- Outcome
- growth, yield and yield componentse1
- Direction
- decreasede1
- Comparator
- irrigation after 60 mm evaporation from Class A evaporation pane2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results demonstrated that late planting date and interrupting of irrigation at flowering stage significantly decreased growth, yield and yield components the of canola cultivars”
e2“with two levels of irrigation regimes (irrigation after 60 mm evaporation from Class A evaporation pan and irrigation interrupting at flowering stage)”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Late planting combined with water stress dramatically decreased canola oil yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- late planting and water stresse3
- Outcome
- oil yielde3
- Direction
- dramatically decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In addition, oil yield was affected by late planting and water stress and it was dramatically decreased”
t0“canola (Brassica napus L.)”
Claim · model-written summary
The canola cultivars did not differ significantly in oil percentage.
- Taxon
- canolaBrassica napus var. napust0
- Material
- cultivarse4
- Outcome
- oil percentagee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Also, there was no significant difference among the cultivars with respect to oil percentage”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Cultivar GKH1103 gave the highest canola seed yield, 5930.4 kg/ha, when planted on October 7th under full irrigation.
- Taxon
- canolaBrassica napus var. napust0
- Material
- GKH1103e5
- Outcome
- seed yielde5
- Direction
- higheste5
- Value
- 5930.4 kg. ha-1e5
- Qualifier
- planted on October 7th under the conditions of full irrigatione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The highest seed yield (5930.4 kg. ha-1) was obtained from GKH1103 cultivars planted on October 7th under the conditions of full irrigation”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Canola seed yield and oil yield were higher in the second season than in the first.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- second yeare6
- Outcome
- Seed yield and oil yielde6
- Direction
- moree6
- Comparator
- first yeare6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Seed yield and oil yield in the second year was more than that of the first year; this increase was related to the increase in seed weight and pod number per plant but not to number of seed per pod”
t0“canola (Brassica napus L.)”
Claim · model-written summary
The yearly increase in canola seed yield was related to increases in seed weight and pod number per plant.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- second yeare6
- Outcome
- seed weight and pod number per plante6
- Direction
- increasee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Seed yield and oil yield in the second year was more than that of the first year; this increase was related to the increase in seed weight and pod number per plant but not to number of seed per pod”
t0“canola (Brassica napus L.)”
Claim · model-written summary
The yearly increase in canola seed yield was not related to the number of seeds per pod.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- second yeare6
- Outcome
- number of seed per pode6
- Direction
- no_changeinferrede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Seed yield and oil yield in the second year was more than that of the first year; this increase was related to the increase in seed weight and pod number per plant but not to number of seed per pod”
t0“canola (Brassica napus L.)”
Claim · model-written summary
The authors recommend sowing canola no later than October 7th to achieve the desired yield.
- Taxon
- canolaBrassica napus var. napust0
- Outcome
- seed sowinge1
- Value
- October 7the1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In general, canola cultivation on November 6th considerably decreased seed and oil yield and it is an important point to achieve desirable yield to seed sowing not done later than October 7th”
t0“canola (Brassica napus L.)”
Claim · model-written summary
The authors state that complementary irrigation was very important to achieve high canola yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- complementary irrigatione0
- Outcome
- high yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Additionally, complementary irrigation was very important to gain high yield in canola under the conditions of this study”
t0“canola (Brassica napus L.)”
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