Effect of Foliar Application of Gibberellic acid, Salicylic acid and Ammonium nitrate on Berry Quality of Ruby Seedless Grape Cultivar

Abstract

Experiment was carried out throughout two successive seasons of 2020 and 2021 on Ruby Seedless grapevines grown at the Experimental Orchard of Assiut University, Faculty of Agriculture. The study was performed to evaluate the influence of Gibberellic acid (GA3), Salicylic acid and Ammonium nitrate on berry quality of Ruby Seedless grape cultivar during 2020 and 2021 seasons. Data revealed that, the application of Salicylic acid (SA) and Ammonium nitrate increased TSS% while GA3 reduced it compared with the control. All treatments decreased TA% except SA in the 1 st season increased it. In 1 st season although there was an increase in reducing sugars due to different treatments comparing with the control, the differences were not significant in most of the treatments. The significant effect was only found in the NH4NO3, while during 2 nd season significantly increased it with an exception of (SA+GA3). SA gave the highest values for anthocyanins either in the 1 st season (61.85 mg/100gm) or two seasons average all the treatments (43.44 mg/100gm).

Effect of Bio-Fertilization on Vegetative Growth of Yong Vines (Vitis vinifera L.) Thompson Seedless and Olivetti Noier cultivars

“…The objective was to determine the impact of Bacillus subtilis and Trichoderma harzianum inoculated soil with bio-fertilizers. Samples of the vineyard soil were taken before the start of the study at a depth of 0-40 cm in order to estimate some of the physical and chemical properties of the soil as shown in Table (1) [14]. Factorial experiment was carried out using split plot in complete randomized block design [15] with three replications using two vine for each experimental unit.…”

“…The grape is widely regarded as one of the world's most essential produce commodities. It is cultivated to a great extent in Europe and various other regions across the globe [1]. In terms of cultivated area and produce production volume, it is positioned as the third most abundant, following citrus and mango.…”