Effect of Seaweed Extract on Vegetative Growth, Yield and Chemical Composition of Wheat

Abstract

The field experiment was conducted in the city flower nursery in the city of Tobruk during the winter season 2023-2024 to study the effect of seaweed on vegetative growth, yield and yield components and chemical composition of wheat cv. "Daman-98". The seaweed extract solutions has been sprayed on plants in three times, the first in the elongation phase, the second after 20 days from the first and the third after three days from the second time in a randomized complete block design (RCBD), with six treatments (control, 2, 4, 6, 8, 10ml/l) with three replicates. The result showed that increasing seaweed extract up to 10 ml/l recorded the significantly higher values of growth parameters (plant height, leaf area, chlorophyll reading, shoot fresh weight/ plant, tillers number/ plant), also, all yield attributes and yield i.e., spike length, number of spikes/m2, 100-grains weight, grain yield, biological yield and harvest index and chemical composition i.e., nitrogen, phosphorus, potassium, protein percentages, followed by seaweed extract 8 ml/l, as compared to control treatment which recorded significantly lower values of growth parameters (plant height, leaf area, chlorophyll reading, shoot fresh weight/ plant, tillers number/ plant), yield and yield components i.e., spike length, number of spikes/m2, 100-grains weight, grain yield, biological yield and harvest index and chemical composition nitrogen, phosphorus, potassium, protein percentages, respectively. In conclusion, use of bio-stimulants (seaweed), had a significant impact on improving majority of the studied characteristics related to wheat plant growth, yield and yield components and chemical composition.

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