EFFECT OF ORGANIC FERTILIZERS AND DRY BREAD YEAST ON SOME YIELD TRAITS OF POMEGRANATE CV. SALIMI AND WONDERFUL

Abstract

A study was conducted in a pomegranate orchard at Ramadi city center of Anbar province during the season 2013, to study the effect of organic fertilizers (Cattle manure 4 kg.tree-1 and Pigeon manure 2and4 kg.tree-1) and biofertilizer (dry bread yeast 10 and 20 gm.l-1) on some yield traits of two pomegranate cultivars (Salimi and Wonderful). The two organic manures were added in the middle of January, while the yeast was added at the three times (middle of February flowering date and four weeks later). The experimental results can be summarized as follows:The organic fertilizers (Cattle and Pigeon manures) as added alone or combined with the dry yeast affected significantly in all of traits. The T9 treatment (4 kg.tree-1 Cattle + 20 gm.l-1 Pigeon manure) was characterized by giving the best effects in most of the yield traits (number of fruits (10.17 fruit.tree-1), volume of fruit (228.2 cm3) and total soluble solids content in fruit juice (17.2%). The same treatment revealed a positive effect in decreasing the total acidity percent and nitrate content of fruit juice to the minimum levels (1.41% and 11.2 mg.l-1, respectively). On the other hand the T7 treatment affected significantly in total sugars percentage in fruit juice (14.0 %). Both pomegranate cultivars affects significantly in some of the yield traits, and Salimi cultivar gave the higher values for (number of fruits and total acidity percentage in fruit juice) reached 8.33 fruit.tree-1 and 1.68%, respectively. On the other hand wonderful cultivar achieved highest value for the total sugars percentage in fruit juice as it reached 13.3%, While no significant effects have detected in the rest of traits as a response to cultivars change.