Intercropping of green peas with garlic reduce infestation by the pea leaf-miner, phytomyza atricornis (meigen)‎

الملخص EN

This work was carried out during the two pea seasons of 2015 & 2016 at a pea farm in Terssa, Giza governorate to study the effect of intercropping green pea (Master C.V.) with the Chinese garlic on the rate of infestation by the pea leaf miner,Phytomyzaatricorins (MG.).

Two intercropping methods were investigated, i.e.

peas with garlic on the other side of ridge and peas with garlic alternating on the same ridge, in addition to planting peas alone.

From both seasons results, pea plantations remained free of leaf miners infestation until the 3rd week of September.

The insect began to occur in the form of few numbers of larvae and mines by the 4 th week of September and its population increased progressively, then it declined until the end of December.

Populations of the pest's larvae and mines in the two treatments showed that infestations to peas with garlic were significantly lower than that in treatment of peas plants alone.

Intercropping peas with garlic inalternating hills on the same ridge caused significant reduction in the P.atricornis populations compared to control in both seasons.

According to the overall seasonal means, intercropping peas with garlic decreased the rate of the pea's leaf miner infestation by 74.8% and 81.0% for larvae and mines in treatment of peas with garlic on the other side.

These percentages reached 89.9% and 87.8%; respectively for larvae and mines in treatment of peas with garlic alternating on the same ridge.

Differences between the leaf miner population of larvae and its mines in twotreatments by intercropping peas with garlic on the other side of ridge or alternating on same ridge were non-significant.