RESPONSE OF ONION BULB YIELD TO SOME BIO- STIMULANTS

Document Type : Original Article

Authors

Department of Plant Production, Faculty of Technology and Development, Zagazig University, Zagazig, Egypt

Abstract

Two field trials were carried out during the two successive winter seasons of 2019/2020 and 2020/2021. The experiments were conducted in a Private Farm at Manshia Radwan District, Abou Kabir Region, Sharkia Governorate, Egypt. Onion cv. Giza 6 Mohassan was selected for this study at sandy loam soil  . The aim  of this work  was to study and evaluate the role of some bio-stimulants on bulb yield of onion.
The experiment was included 10 treatment groups as follows:
1)        Dry yeast extracts (4 g/L),
2)   Seaweed extracts (2 ml / L),
3)   Garlic oil extract (2.0 ml /L),
4)  Bee Pollen (2 g /L),
5)  Dry yeast extract (2 g/L) + Bee pollen extract (1g L),
6)  Foliar spray with potassium humate (1.5 ml/L),
7)  Dry yeast (2 g /L) + seaweed extract (ml/L),
8)  Garlic oil extract (1 ml/L) + Dry yeast extract (1 g /L) + bee pollen extract (1/2 g /L) + seaweed extract (1/2 ml/L),
9)  Dry yeast extract (1 g /L) + bee pollen (1/2 g /L) + Seaweed extract (1/2 ml. /L),and
10)   Control (without any addition).
A randomized complete block design (RCBD) was used for these treatments (with three replicates).
Results revealed thatthe treatment of garlic + dry yeast + bee pollen + seaweed extract, being the most effective in bulb yield of onion in both growing seasons. This treatment followed by the treatments of dry yeast + bee pollen + seaweed extracts, dry yeast + seaweed extracts, potassium humate and seaweed extracts, respectively.
Conclusively, the treatment of garlic extract + dry yeast + bee pollen + seaweed extracts, followed by the combinations between them, and the treatment of potassium humate increased the onion bulb yield and its components under the same conditions of this study.
 

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