ACTIVE INGREDIENTS COMBINATIONS FOR PATHOGENS AND PESTS CONTROL ON EGGPLANT CROPS IN THE FIELD

Mihaela Alina Buzatu,Stelica Cristea,Costache Marcel,Gicuța Sbîrciog

doi:10.51258/rjh.2020.05

Abstract

The present study aims to identify combinations of active substances for the complex control of pathogens and pests on eggplant crops in the field. The experiments were conducted between 2016 - 2017, in field conditions, using the variety of eggplant Luiza and the following experimental variants: V 1 - Acrobat MZ 69 WG 0.2% + Mospilan 20 SG 0.04%; V 2 - Acrobat MZ 69 WG 0.2% + Vertimec 1.8 EC 0.1%; V 3 - Acrobat MZ 69 WG 0.2% + Laser 240 SC 0.05%; V 4 - Melody Compact 49 WG 0.2% + Mospilan 20 SG 0.04%; V 5 - Melody Compact 49 WG 0.2% + Vertimec 1.8 EC 0.1%; V 6 - Melody Compact 49 WG 0.2% + Laser 240 SC 0.05%; V 7 - Ortiva Top 0.1% + Mospilan 20 SG 0.04%; V 8 - Ortiva Top 0.1% + Vertimec 1.8 EC 0.1%; V 9 - Ortiva Top 0.1% + Laser 240 SC 0.05%; V 10 - untreated control. The average efficacy of the treatment variants experienced in 2016 and 2017 varied between 83.2% (V4) and 85.0% (V8) depending on the combinations of products pathogens and pests control. Analyzing the yields obtained (34.6 -44.0 t / ha in 2016 and 33.5 - 43.1 t / ha in 2017), compared to the untreated control variant (30.4 t / ha in 2016 and 31.1 t / ha in 2017), it is found that the yield differences obtained in addition to the untreated control variants were in all cases, very significant.

Highlights

Eggplants are attacked by numerous pathogens and pests (Costache M., Roman T., 2007) of which we mention Alternaria porri f.sp.solani, Botrytiscinerea, Phytophthora parasitica and Leptinotarsa decemlineata (Colorado beetle), Macrosiphum euphorbiae, Tetranychus urticae and Helicoverpa armigera
The combinations of products tested were noted for their good efficacy in controlling the following harmful organisms (Tables 2 and 3): 1. Acrobat MZ 69 WG + Mospilan 20 SG: for Alternaria porri f.sp. solani,Botrytis cinerea, Phytophthora parasitica, Leptinotarsa decemlineata and Macrosiphum euphorbiae; 2
WG, Melody Compact 49 WG or Ortiva Top with Mospilan 20 SG ensured a good protection of the eggplant plants from the attack of harmful organisms like: Alternaria porri f.sp. solani, Botrytis cinerea, Phytophthora parasitica, Leptinotarsa decemlineata and Macrosiphum euphorbiae;

Summary

Introduction

Eggplants (Solanum melongena L.) are among the most cultivated vegetable species worldwide, including in Romania. According to statistical data provided by FAO (2020), the area cultivated with eggplant in Romania was in 2018 of 9025 ha, and the total yield of 152719 tons. Eggplants are attacked by numerous pathogens and pests (Costache M., Roman T., 2007) of which we mention Alternaria porri f.sp.solani (early blight), Botrytiscinerea (gray mold), Phytophthora parasitica (fruit rot; Buzatu et al, 2017) and Leptinotarsa decemlineata (Colorado beetle), Macrosiphum euphorbiae (green nightshade lice), Tetranychus urticae (the common red spider) and Helicoverpa armigera (fruit caterpillar). Solani occur frequently in eggplant crops, especially in years with high average temperatures and heavy rainfall. Botrytis cinerea occurs frequently in crops of eggplants in protected areas, and in the fields in years with abundant precipitation or if the culture is irrigated by sprinkling irrigation. At different stages of development, the attack usually begins at the site of insertion of the peduncle and from here progresses to their tip

Methods

Results

Conclusion