Comparison of different cultivars of Sugar beet infection to Lixusincanescens (Col.: Curculionidae) in Joghatay

Subject Areas : Plant Pests

isa jabaleh ¹ , Reza Khodashahi ² , Sadegh Baghban Khalilabad ³

1 - Assistant Professor of Department of Plant Protection, ACECR -Khorasan Razavi, Kashmar Higher Education Institute, Kashmar, Iran
2 - MSc. Student, AgriculturalEntomology, Department of Plant Protection, ACECR -Khorasan Razavi, Kashmar Higher Education Institute, Kashmar, Iran.
3 - Assistant Professor, Department of Agronomy, ACECR -Khorasan Razavi, Kashmar Higher Education Institute, Kashmar, Iran

Received: 2021-08-25 Accepted : 2021-08-25 Published : 2020-08-22

Keywords: Yield, Sugar content, Sugar beet cultivars, Lixusincanescens,

Abstract :

In this study, the effect of Lixusincanescens on five sugar beet cultivars on five sugar beet cultivars (Shkoofa, Flores, SyRobustus, Silvetta and HilleshogMonatunno) in the year 2019-2020. Sampling was performed every 8days from early July to mid-September. At each date, the experimental sample of larval damage on the petiole, the number of eggs and larvae were counted, and at the end of the experiment, the yield and sugar titer were analyzed. The results showed, the significant difference between larval damage on the petiole, the number of eggs and larvae, yield and sugar grade result on the studied cultivars at the level of five times the probability of meaning. The lowest larval damage index on petiole was in Shokof (2.5) and Silvetta (2.5), and the highest in Monatunno (6.25) and Flores (5.5); The lowest number of eggs per plant in Shokofa (2.25) and Silvetta (3.25) and the highest in Monatunno (5.25) and Flores (5) The lowest number of larvae in Shokofa (1.75) and Silvetta (75/75) and the highest was observed in Monatunno (6.25) and Flores (5) cultivars. The highest density of eggs and larvae was observed in the sixth (August 11) and seventh (August 19) sampling. The highest yield and sugar content were observed in Shokofa and Silvetta cultivars and the lowest in Monatunno and SyRobustus cultivars. The results of this experiment can indicate that Shkoofa and Silota dances can be the best option in virus management due to the least amount of petiole damage, egg and larval density.