Sowing Date Effect on Tomato Yellow Leaf Curl Virus

Author: Ali Darini and Mehdi Azadvar

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Abstract

Tomato Yellow Leaf Curl Virus (TYLCV) is one of usual ailments which changing sowing date, as one of appropriate agricultural methods, has significant effect on damage reduction of mentioned disease and chemical fertilizer application. According to no report and research on the best sowing date of tomato in south of Kerman, this research was conducted for nomination the best sowing date in order to escape TYLCV and reduce its effect in open air cultivation in Manoujan of Kerman. It was done in the form of Complete Block Design with five treatments and three replications. Seeds were cultivated in terrarium (6 August, 21 August, 5 September, 20 September and 5 October) and based on the plant phenology (5-6 leaf stage) transplanted in the main land. The results indicated that sowing in early August to September could not reduce the damage severity but planting in 20 September and 5 October significantly reduced pollution percent and severity.

Keywords

TYLCV, transplanting, sowing date, tomato, viral disease

Conclusion

Sowing date, as an affecting factor of crop yield and quality, is an important factor in agricultural crops. On the other hand, perceptible changes in climatic conditions have significant effect on plants growth rate and pest population. Due to hot weather, the first to third sowing date led to slow plant growth and pest population growth; therefore, it caused increase in extent of damage to the crops. According to low area under cultivation of the pest hosts in summer, whitefly was more infested tomato crops and damage severity was higher. The lowest amount of damage amount was observed in the fourth and fifth sowing date but price of tomato fruits in 20 September and 5 October was affected by fluctuations in market prices. Although, changing the sowing date in early sowing method was less able to reduce pest damages but using tolerant varieties with proper swing date can reduce damage of Sar Jamak to minimum. Therefore, it is recommended to use tolerant varieties in late August, earl

References

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How to cite this article

Ali Darini and Mehdi Azadvar (2016). Sowing Date Effect on Tomato Yellow Leaf Curl Virus , Biological Forum – An International Journal 8(1): 372-378.