Population Trend of Canola Aphid, Lipaphis Erysimi (Kalt.) (Homoptera: Aphididae) and its Associated Natural Enemies in Different Brassica Lines along with the Effect of Gamma Radiation on Their Population
Studies regarding the determination of population
trend of Lipaphis erysimi (kalt.) and its associated natural enemies in
different Brassica lines along with the effect of gamma radiation on
their population were conducted at Agricultural Research Farm,
Malakandher, Khyber Pakhtunkhwa Agricultural University
Peshawar during spring 2006. Three different Brassica lines F6B3,
F6B6 and F6B7 were used, which were replicated four times in
Randomized Complete Block Design. The data revealed that aphid
infestation invariably stated in all three varieties during last week of
February 2006 (1st observation). The peak population of 4.39 aphids
leaf-1 was s recorded during 2nd week of March and lowest population
of 1.02 aphids leaf-1 was recorded during 5th week of March. The
species of lady bird beetle (Coccinella septempunctata) and Syrphid
fly (Syrphus balteatus) first appeared on 24th February with a mean
number of 0.40 lady bird beetle leaf-1 and 0.87 Syrphid fly leaf-1,
respectively. At the time when aphid population started to increase
the peak population of C. septempunctata (0.70 lady bird beetle leaf-
1) and S. balteatus (1.04 syrphid fly leaf-1) was recorded on the 2nd
week of March. Chrysoperla carnea appeared in the 1st week of
March and their peak population was recorded during the 3rd week of
March with mean population of 1.46 C. carnea leaf-1. Among all the
Brassica lines, F6B7 showed comparatively more resistance as
compared to F6B3 F6B6. F6B3 showed least resistance against L.
erysimi, which was found to be the most susceptible cultivar. F6B7
was also found superior in terms of natural enemies. Maximum
number of all natural enemies was recorded on this variety followed
by F6B6. Lowest number of natural enemies was recorded in F6B3.
No significant effect was recorded for the effect of gamma radiation
on the population of aphids, natural enemies and on the varieties.
[1] Agarwala, R., K. Amrender, Y. P. Singh, S. A. Khan, L.M. Bhar, N. V.
K. Chakravarthy and A. Srivastava. 2005. Forecasting of L. erysimi on
oilseed Brassica in Indian. J. Crop Protection. 24(12): 1042-1053.
[2] Agarwala, B. K. and P. Bardhanroy. 1999. Numerical response of lady
beetle (Coleoptera: Coccinellidae) to aphid prey (Hom: Aphididae) in
the field bean in northeast India. J. Appl. Entomol. 17:303-309.
[3] Bedford, J.W. and A.Henry.1998.Yield losses in important cultivars of
canola and effect of Aphid infestation under favorable environmental
condition. Indian. J. Entomol. 52:541-546.
[4] Charlet, L.D., D. Olson, and P.A. Glogoza. 2002. Biological control of
insect and weed pest in North Dakota Agriculture. North Dakota State
University, Extension Service, Frago, North Dakota 58105. p.4-10.
[5] MINFAL. 2006. Ministry for Food, Agriculture and Livestock.
Agricultural Statistics of Pakistan 2006-2007. Government of Pakistan,
Islamabad.
[6] Rana, J. S. 2005. Performance of L. erysimi (Homoptera: Aphididae) on
different Brassica species in a tropical environment. J. Pest Sci. 78(3):
155-160.
[7] Singh, C.P. and G.C. Sachan. 1999. Population build up of C.
septempunctata and its synchronization with L. erysimi. Department of
Entomology, College of Agriculture, G.B. Pant University of
Agriculture & Technology, Pantnagar. 18 (1): 25-30.
[8] Sirimachan, N., O. Kern-asa, W. Amornsak, and W. Suasa-ard. 2005.
Biological study and efficiency of the green lacewing, Mallada basalis
(Walker) (Neuroptera: Chrysopidae) as biological control agent of Aphis
craccivora Koch (Homoptera: Aphididae). National Bio Control Res
Center. Proceedings of 43rd Kasetsart University Annual Conference,
Thailand, 1-4 February.
[9] Steels, R.G. and J. H. Torrie. 1960. Principles Procedures of Statistics.
McGraw Hill, New York. pp. 481.
[10] Weibull, J. and G. Melin. 2003. Yield losses due to mustard aphid, L.
erysimi in some Brassica species. Annals of applied Biology. 125:
417-423.
[1] Agarwala, R., K. Amrender, Y. P. Singh, S. A. Khan, L.M. Bhar, N. V.
K. Chakravarthy and A. Srivastava. 2005. Forecasting of L. erysimi on
oilseed Brassica in Indian. J. Crop Protection. 24(12): 1042-1053.
[2] Agarwala, B. K. and P. Bardhanroy. 1999. Numerical response of lady
beetle (Coleoptera: Coccinellidae) to aphid prey (Hom: Aphididae) in
the field bean in northeast India. J. Appl. Entomol. 17:303-309.
[3] Bedford, J.W. and A.Henry.1998.Yield losses in important cultivars of
canola and effect of Aphid infestation under favorable environmental
condition. Indian. J. Entomol. 52:541-546.
[4] Charlet, L.D., D. Olson, and P.A. Glogoza. 2002. Biological control of
insect and weed pest in North Dakota Agriculture. North Dakota State
University, Extension Service, Frago, North Dakota 58105. p.4-10.
[5] MINFAL. 2006. Ministry for Food, Agriculture and Livestock.
Agricultural Statistics of Pakistan 2006-2007. Government of Pakistan,
Islamabad.
[6] Rana, J. S. 2005. Performance of L. erysimi (Homoptera: Aphididae) on
different Brassica species in a tropical environment. J. Pest Sci. 78(3):
155-160.
[7] Singh, C.P. and G.C. Sachan. 1999. Population build up of C.
septempunctata and its synchronization with L. erysimi. Department of
Entomology, College of Agriculture, G.B. Pant University of
Agriculture & Technology, Pantnagar. 18 (1): 25-30.
[8] Sirimachan, N., O. Kern-asa, W. Amornsak, and W. Suasa-ard. 2005.
Biological study and efficiency of the green lacewing, Mallada basalis
(Walker) (Neuroptera: Chrysopidae) as biological control agent of Aphis
craccivora Koch (Homoptera: Aphididae). National Bio Control Res
Center. Proceedings of 43rd Kasetsart University Annual Conference,
Thailand, 1-4 February.
[9] Steels, R.G. and J. H. Torrie. 1960. Principles Procedures of Statistics.
McGraw Hill, New York. pp. 481.
[10] Weibull, J. and G. Melin. 2003. Yield losses due to mustard aphid, L.
erysimi in some Brassica species. Annals of applied Biology. 125:
417-423.
@article{"International Journal of Biological, Life and Agricultural Sciences:52913", author = "Ahmad-Ur-Rahman Saljoqi and Rahib Zada and Imtiaz Ali Khan and Iqbal Munir and Sadur-Rehman and Hazrat
Jabir Alam Khan", title = "Population Trend of Canola Aphid, Lipaphis Erysimi (Kalt.) (Homoptera: Aphididae) and its Associated Natural Enemies in Different Brassica Lines along with the Effect of Gamma Radiation on Their Population", abstract = "Studies regarding the determination of population
trend of Lipaphis erysimi (kalt.) and its associated natural enemies in
different Brassica lines along with the effect of gamma radiation on
their population were conducted at Agricultural Research Farm,
Malakandher, Khyber Pakhtunkhwa Agricultural University
Peshawar during spring 2006. Three different Brassica lines F6B3,
F6B6 and F6B7 were used, which were replicated four times in
Randomized Complete Block Design. The data revealed that aphid
infestation invariably stated in all three varieties during last week of
February 2006 (1st observation). The peak population of 4.39 aphids
leaf-1 was s recorded during 2nd week of March and lowest population
of 1.02 aphids leaf-1 was recorded during 5th week of March. The
species of lady bird beetle (Coccinella septempunctata) and Syrphid
fly (Syrphus balteatus) first appeared on 24th February with a mean
number of 0.40 lady bird beetle leaf-1 and 0.87 Syrphid fly leaf-1,
respectively. At the time when aphid population started to increase
the peak population of C. septempunctata (0.70 lady bird beetle leaf-
1) and S. balteatus (1.04 syrphid fly leaf-1) was recorded on the 2nd
week of March. Chrysoperla carnea appeared in the 1st week of
March and their peak population was recorded during the 3rd week of
March with mean population of 1.46 C. carnea leaf-1. Among all the
Brassica lines, F6B7 showed comparatively more resistance as
compared to F6B3 F6B6. F6B3 showed least resistance against L.
erysimi, which was found to be the most susceptible cultivar. F6B7
was also found superior in terms of natural enemies. Maximum
number of all natural enemies was recorded on this variety followed
by F6B6. Lowest number of natural enemies was recorded in F6B3.
No significant effect was recorded for the effect of gamma radiation
on the population of aphids, natural enemies and on the varieties.", keywords = "Canola aphid, Lipaphis erysimi, natural enemies,
brassica lines, gamma radiation.", volume = "5", number = "1", pages = "10-8", }