This work was conducted during 2016 and 2017 seasons in a private orchard at El-Khatatba region, Minofia Governorate, Egypt
to study the effect of some foliar application of amino acids at 0.0, 1, 2 and 3 ml/L and micronutrients mixture i.e., Fe + Zn + Mn each at
0.0, 50, 100 and 150 ppm as well as their combination on growth, yield, quality and leaf mineral content of Canino apricot trees. The
trees used in this experiment were eight-year-old planted at 4x5m apart and budded on local apricot rootstock, grown in a sandy soil
under drip irrigation system and received the common cultural practices. The trees selected to be healthy and uniform in growth and
yield as possible. The gained results showed that the longest shoots, the highest number of leaves/shoot and the largest leaf area were
obtained from the combination of amino acids at the high rate (3 ml/L), particularly those sprayed with micronutrients at the high level
(150 ppm) in the two seasons. The highest fruit set % was scored by the interaction of amino acids at the high rate, especially those
received micronutrients foliar spray at the high level in the two seasons. The heaviest fruit and the highest yield/ fed. were noted by the
combined treatment between amino acids at 3 ml/L and micronutrients at 150 ppm in the two seasons. The highest values of fruit
firmness obtained from the combination of micronutrients at the high level, particularly those received amino acids at the high rate (3
ml/L) in both seasons. 3 ml/L amino acids sprayed plus micronutrients at 150 ppm induced the highest values of fruit T.S.S. %, fruit total
sugars % and V.C (mg/ 100ml juice). The highest values of leaf N, P, K, Fe, Zn and Mn contents were obtained by using the mixed
treatment between amino acids at 3 ml/L and micronutrients at 150 ppm in both seasons. Conclusively, spraying Canino apricot trees
with amino acids at 3 ml/L and received micronutrients at 150 ppm foliar spray induced prospective effects on vegetative growth and
fruits yield and quality. |
