Seasonal biology, bases of resistance and yield losses due to shoot fly, atherigona soccata (Rondani) in maize
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Date
2010
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Publisher
CCSHAU
Abstract
The seasonal biology of shoot fly (Atherigona soccata Rondani) was studied on two maize
varieties; susceptible Basi local and resistant HM-4 during spring season 2009. Minimum oviposition
and dead heart were observed in resistant variety HM-4. The larval and pupal period were observed
maximum on resistant variety HM-4 than susceptible on Basi local. Adult emergence was observed
48.03 and 73.06 per cent on resistant variety HM-4 and susceptible variety Basi local, respectively. The
fecundity and oviposition period were observed maximum on susceptible variety Basi local and
minimum on resistant variety HM-4. The adult longevity was observed maximum (8.30 days) on
susceptible variety Basi local and minimum (6.09 days) on resistant variety HM-4.
The larval growth index and total growth index were maximum on susceptible variety Basi
local and minimum on resistant variety HM-4.
Among different morphological plant factors plant height, number of leaves per plant and leaf
length were negatively correlated.
Similarly, the biochemical constituent phenols and tannin were negatively correlated whereas
protein, sugar and chlorophyll in plant leaves were positively correlated with shoot fly growth and
development parameters.
The oviposition and dead hearts were recorded minimum in plots treated with imidacloprid
17.8 SL as seed treatment followed by spray of carbaryl 50 WP and endosulfan 35 EC. Similarly,
maximum yield was recorded in imidacloprid 17.8 SL as seed treatment followed by spray of carbaryl
50 WP and endosulfan 35 EC.
Description
Keywords
Atherigona soccata, Maize, Dead heart, Varieties, Eggs, Biology, Resistant and susceptible