Assessment of groundnut yield loss due to the groundnut leaf miner, Aproaerema modicella infestation in Mozambique
Abstract
162 words
The groundnut leaf miner, Aproaerema modicella Deventer
(Lepidoptera: Gelechiidae), is an invasive alien Asian species
in Mozambique. A. modicella was reported for the first time in
1998 in Uganda. In Mozambique, Groundnut leaf miner was
first reported in 1999 in Zavala district, Inhambane province.
Levels of infestations of 100% and complete yield losses and
withdrawal from groundnut cultivation by farmers have been
reported in the southern provinces. To establish the level of
yield losses due to infestations by A. modicella, two
experiments on screening of insecticides were conducted in
Nhacoongo and Chidenguele South of Mozambique. The results
showed that this invasive species occurs at high population
densities in the southern region (>30 larvae/plant). Yield losses
of 62.9% and 86.2% were recorded respectively in Chidenguele
(Gaza province) and Nhacoongo (Inhambane province). The
current results suggest that this species is well established in
groundnut production areas in the study area. This posses a
potential threat to groundnut production and food security in
the country.
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