The effect of using foliar spray with amino acids and seaweed extract on olive fruit content of oil
2023
Ibraheem Talal Hafez
This research was carried out at the Agricultural Scientific Research Center in Hama، in seasons 2020 ، 2021 to study the effect of foliar spray of seaweed extract and amino acids on the percentage of oil in olive fruits cv. Kaisi، where the foliar spray was applied with seaweed extract called alga 600 in concentration of (0.5 g/l) and amino acids in concentration of (1 ml/l) according to treatments: F0 control without spraying seaweed extract، F1 one spray one week before flowering، F2 one spray after fruit set، F3 one spray one month before harvest، F4 two sprays (before flowering and after fruit set)، F5 two sprays (after fruit set and one month before harvest)، F6 three sprays (before flowering، after fruit set، and one month before harvest)، with the addition of ground fertilization according to the Fertilizer recommendation. The foliar spraying of seaweed extract with amino acids، either together or separately، contributed to improving the vegetative growth traits and flowering، increasing the productivity of trees، improving the quality of fruits، and increasing the percentage of oil in the fruits compared to the control and in varying proportions، where the foliar spray of seaweed extract concentration of 0.5g/l with amino acids concentration of 1ml/l proved to be more effective than spray separately in most of the traits studied and in both seasons، as the leaf area and total chlorophyll were higher when treatment F6 in the second season was 7.97. cm2، 1.86 mg/ml، respectively، while the lowest values for the control were 6.08 cm2، 1.42 mg/ml، and the best values for fruit specifications and oil percentage were recorded in both seasons، where the highest value for oil percentage in the second season was 21.94% compared to the control that recorded 18.07%، while the treatment F4 recorded the best values for the length of the shoots، which reached 7.88 cm in the second season، as well as for the flowering، fruit set and yield، as it recorded the best values for the average number of total flowers and the fruiting coefficient in both seasons، so the highest value was in the first season 234.13، 3% respectively، compared to the control، which recorded 191.48 and 1.91%، and the best yield values in the first season were 41.90 kg and in the second season 37.11 kg، compared to the control، which recorded 15.57 kg ، 12.58 kg، respectively، while the highest value of thefruit set percentage was 3.49% in the F1 treatment in the the second season ، compared to the control was 2.28% ، and the results showed that the treatment with seaweed extract at a concentrat 0.5 ml/L with three sprays (a spray before flowering، a spray after fruit set، and a spray a month before harvest) achieved the highest net profit of 18747.27 SP/tree (190.71 %) in terms of the amount of oil in the fruits، equivalent to 224967.24 SP/dunum.
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Este registro bibliográfico ha sido proporcionado por National Centre for Agro. Inform. and Documentation, Ministry of Agriculture and Agrarian Reform