Available water supply is a determining factor of bulb onion effective development

Abstract

The article reveals the role of irrigation as a leading principle in optimizing the life of bulb onions. The purpose of the research was to assess the effectiveness of water use by onion plants under various irrigation regimes. We studied watering and irrigation norms that determine the different irrigation regimes of 7 onion hybrids: Valero F1, Kuantach F1, Soltis F1, Utrero F1, Pandero F1, Katinka F1, Cometa F1 and Chalcedony. The most effective irrigation regimes were identified for the studied hybrids and varieties of bulb onion. The best for the Soltis F1 hybrid was a differentiated irrigation regime, and for the rest of the hybrids and Chalcedony varieties it was increased one. The most productive hybrid in the conditions of the Lower Volga region was Pandero F1, which produced 187.0 t/ha with an increased irrigation regime.