The effect different levels of diazenon on sesamia criteca in different time for farieties of Zea mays L

Abstract

The experiment was carried out in Al-Gelawa village / Al Mussaib Babylon . during the autumn season 2017 . The experiment used RCBD design with three replicates to study the effect of the level's and dates of addition of diazenon destructive on growth and yield of Zea mays L.. . The diazinon was added at three dates : (14,24,34) days ofter germination , and with three levels (3,6,9) kg.ha-1 on three varieties of Zea mays L. (Maha , 5018 , Fager 1) the results showed : The variety 5018 was exceeded all .Study traits : leaf area , number of ears . plant-1 number of row . ear-1 , number of grain .row-1 and yield.plant-1 (4475.30 cm2 , 1.16 ear . plant-1 , 15.53 row .ear-1 . 528.94 grain .ear -1 , 156.91 kg . plant-1 ) sequentially . The combination between (varieties and levels of diazenon ) , the treatment (5018 x 6 kg .he-1 ) gave high range of all study traits . The combination between added dates , and the levels of diazenon ) the treatment (24days x 6kg .he-1) was exceeded by giving high range of all study traits . The combination between varieties and plant dates the treatment (5018 x 24 day) was the best by giving high range of all studied traits.