Response of Garlic Plants to Foliar Spray by Biostimulating Treatments

The present experiment was conducted to determine the effects of foliar spraying with Salicylic acid 1g-1, seaweed extract 1g-1,potassium phosphide 2ml-1 compared with the control on garlic plants growth, bulb yield and bulb quality during the two growing seasons.The obtained results showed that all garlic growth parameters significant and/or highly significant affected by foliar spraying treatments after 120 and 210 days of sowing in both seasons.All tested foliar spraying treatments exceeded the control treatment in all growth traits in both seasons.The highest plant height and leaves fresh weight were recorded in plants that treated with seaweed extract in both seasons.Garlic plants that sprayed with potassium phosphide had the highest leaves number/plant, plant fresh and dry weight and leaves content of total chlorophyll in both seasons.Also, the data revealed that garlic yield measurements significantly affected by all tested foliar spraying treatments after 120 days of sowing in both seasons when compared with control. Garlic plants that sprayed with potassium phosphide had the highest neck thickness, bulb diameter,bulb length and bulb weight in both seasons.While, the highest bulb yield was found in garlic plants was sprayed with seaweed extract in both seasons. Garlic plants that sprayed with seaweed extract recorded the highest shoot fresh weight, one bulb weight, bulb diameter, total cloves weight/bulb and average of clove weight in both seasons.While, the highest bulb length was found in garlic plants that treated with potassium phosphide and the highest number of cloves/bulb was recorded in plants that sprayed with GA3 in both seasons