Effect of different foliar sprays on the storage potential and fruit quality of 'conference' pears (original) (raw)
JOURNAL OF ADVANCES IN AGRICULTURE
A factorial experiment with randomized complete block design carried out in Erbil governorate, Iraq during 2015 and 2016 seasons on pear (Pyrus Communis L.) Spadona and Compote cvs. to investigate the effects of spraying trees with (0, 0.5, 1.0 and 1.5%) salicylic acid (SA) on some fruits quantity and quality characteristics. The results show that Compote fruits had the highest weight and firmness significantly compared to Spadona fruits in both seasons, whereas Spadona variety records the highest total acidity. Fruits of Compote variety records higher chlorophyll a , chlorophyll b and total carotenoids content significantly compared to Spadona variety in 2015, in the opposite of the results of 2016 in respect to chlorophyll a and chlorophyll b. Spraying trees with SA increased fruit weight and firmness compare to control treatment for both seasons, and total acidity in 2015 and total sugars in 2016, whereas the differences were not significant in 2016 and 2015 for the last two prop...
Effect of foliar sprays on fruit retention, quality and yield ofCostata persimmon trees
Emirates Journal of Food and Agriculture, 2010
The present investigation was carried out during the two successive years of 2006 and 2007 on "Costata" persimmon trees in order to study the influence of foliar sprays of different chemicals on the fruit retention, fruit quality and yield.Trees were sprayed at pea stage (5mm fruitlet diameter), marble stage (15mm fruitlet diameter) or at both stages with urea, phosphoric acid, potassium nitrate, Ca-EDTA, Fe-EDTA + Zn-EDTA + Boric acid , NAA, GA 4 , Amcotone, activated dry yeast and a mixture of ascorbic plus citric acids. All sprayed chemicals significantly increased vegetative growth, fruit retention, tree yield in both seasons. GA 4 had the highest fruit retention and yield followed by Amcotone and activated dry yeast and then NAA as compared with all other treatments in both seasons. All sprayed compounds increased fruit weight ,TSS, total sugars, reducing sugars, carotene and V.C contents and decreased fruit acidity and tannin contents as compared with all other treatments in both seasons. GA 4 had the highest fruit weight, followed by activated dry yeast and mixture of ascorbic acid + citric acid and then Amcotone. Phosphoric acid recorded the highest values of fruit TSS, total sugars, reducing sugars and carotene contents, whereas activated dry yeast gave the highest V.C and lower tannine contents as compared with all other chemicals in both seasons. Foliar sprays at pea + marble stages recorded the highest values of all the investigated parameters in both seasons as compared with pea or marble stage.