Efficiency of Gibberellic Acid and some Modern Insecticides in Control Earias Insulana (Bosid)

Abstract

A field experiment was conducted in the Al-Mashroo area / Al-Hamzawi, affiliated to Al-Musayyib district, located 35 km north of Babylon, in order to know the effect of bio-fertilizer and pesticide spraying on potato yield and its quality traits under the influence of different irrigation periods. The experiment was conducted according to a split-split plot design within the (Randomized Complete Block Design) RCBD with three replicates. The experiment included three factors, the first factor is the irrigation periods (5, 7, and 9) days, which represent the main plots. The second factor is biofertilizer with three levels (control treatment without adding CO, inoculation treatment with rhizobia R, inoculation treatment with mycorrhizal M) and the sub-plots are represented. The third factor is metribuzin with four levels (no addition of CO, pre-emergence, post-emergence, late post-emergence) and the sub-sub plots are represented. The results of the statistical analysis showed that the pre-emergence and post-emergence treatments were significantly superior in the number of stems, chlorophyll content in leaves and leaf area, and the fertilizer treatment (Myco) and chlorophyll content in leaves were excelled, and the number of leaves reached (23.06 and 24.66 SPAD, 28.10 and 29.15 (leaf.plant-1) The irrigation treatment every 7 days was significantly excelled in the number of leaves and leaf area (30.25 and 31.35 leaf.plant-1, 193.5 and 195.5 cm2). (28.3 and 3.53 stem.plant-1 and 3.58 and 3.88 stem.plant-1, 36.77 and 35.97 leaf.plant-1 and 37.77 and 37.68 leaf.plant-1, 219.2.224.4 cm2 and 215.5 and 227.1 cm2) and the bi-interaction between Irrigation periods and biofertilizer had a significant effect and the 7-day Myco × interaction was superior in the number of stems, number of leaves and leaf area (3.34 and 3.76 stems. plant-1, 32.40 and 33.65 leaves. plant-1, 216.3 and 219.0 cm2) and the two-way interaction between the two pesticides was The biofertilizer had a significant effect, and the interaction of post × Myco was excelled in the number of stems (3.24 and 3.78 stems. plant-1). -1, 268.6 and 271.8 cm2).