Effect of Different Sowing Dates on the Growth and Yield of Canola (Sarson) Varieties

Yousaf, Muhammad Irfan; Ahmad, Amir; Jahangir, Muhammad; Naseeb, T.

doi:10.3923/ajps.2002.634.635

Cited by 10 publications

(3 citation statements)

References 14 publications

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“…Being reduction of biomass yield and seed yield, biological yield also reduced. The results were consistent with studiesof Rao & Mendham, (1991); Taylor & Smith, (1992) andWhitfield, (1992.The late planting of canola adversely affect the yield and yield components due to its adverse effect on growth, because the different growth stages canola acquired enough time for their development (Muhammad et al, 2002).…”

Section: Biological Yield and Biomass Yieldsupporting

confidence: 90%

Effect of sowing dates on different rapeseed varieties under rain fed condition

Ranabhat

Tiwari²,

Dhakal

et al. 2021

J. Agric. Nat. Res.

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Rapeseed is a leading oilseed crop of Nepal occupying 85% of total oilseed cultivation area. This research was conducted to determine the response of different sowing dates on different rapeseed varieties in their final yield under the rain fed condition in Phulbari, Dang. Two rapeseed varieties Unnati and Surkhet Local on three dates of sowing Oct 4, Oct 24 and Nov 14 were tested under two factorial RCBD design in the year 2018 A.D. Data consisted growth attributes like plant height, branch per plant, no. of siliqua per plant, aborted siliqua and siliqua abortion percentage and yield attributes such as biological yield, biomass yield, seed yield, harvest index and test weight. Statistically no difference was found between varieties whereas differences were found on different sowing dates. Result showed that among the varieties, the highest yield (8.59 q/ha) was obtained in Surkhet Local than in Unnati (8.54 q/ha). In case of sowing dates, higher seed yield was obtained in Oct 4 sown crop (15.93 q/ha) followed by Oct 24 (7.47 q/ha) and Nov 14 (2.29 q/ha).The higher seed yield obtained in early sowing is due to shorter vegetative and longer reproductive phase. The comparison of mean values of the seed yield for interaction between variety and sowing date showed that variety Surkhet Local sown in Oct 4 plant had the highest seed yield (16.33 q/ha) followed by variety Unnati on same sowing date (15.54 q/ha). Based on the result obtained, Surkhet Local*Oct 4 performed better in Dang condition.

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Section: Biological Yield and Biomass Yieldsupporting

confidence: 90%

Effect of sowing dates on different rapeseed varieties under rain fed condition

Ranabhat

Tiwari²,

Dhakal

et al. 2021

J. Agric. Nat. Res.

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“…Bhuiyani et al (2008 also examined the effect of planting times and reported significant results supporting the present findings. Yousaf et al (2002) highlighted the effect of different sowing date on plant traits and found significant effects. Genetically some brassica species are more vulnerable and susceptible to aphid's population which causes a great loss of yield, while some genotypes of brassica show resistance and natural enemies appear too late (Dharavath et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…Seasonal changes move by half of the month and sometimes they are predictable while occasionally they become uncertain. Impact of the sowing date becomes evident on infestation of pests (Yousaf et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Influence of Sowing Time on Cabbage Aphid (Brevicoryne brassicae L.) (Homoptera; Aphididae) Population in Different Brassica Species under Field Condition

Shafi¹,

Farooq²

2021

SJA

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Four brassica species (B. carinata, B. rapa, B. napus and B. juncea) were seeded from October to November at different dates (Octo 20, Nov 05, Nov 20) in RCBD design (Randomized Complete Block Design) with standard cultivation procedures to detect the effect of sowing date on Brevicoryne brassicae population. Data were noted weekly and evaluated statistically. The ANOVA revealed highly significant effects of drill dates and species on Brevicoryne brassicae populations, while brassica species × sowing date interaction was also highly significant. Early sown crops bore fewer aphid populations in contrast to mid and late sown crops. Therefore, it may be concluded that mid-October can be recommended for the farming of brassica crops.

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