Effect of some Organic and Bio-Fertilizers on" Thompson Seedless" Grapevines Under New Reclaimed Sandy Soil

Abstract

During 2015 and 2016 seasons, Thompson Seedless grapevines were fertilized with organic fertilizer, compost, humic acid and bio fertilizer (Ascophyliumnodosum) algae. These fertilizers were used as a partial replacement for inorganic N fertilizer improving yield, lowering pollution and enhancing the efficiency of exportation to foreign markets. The obtained results indicated that application of N as 50% inorganic N plus50% organic N and algae 5ml / vine was the best management system for ensuring the best yield, number of clusters /vine and cluster weight, leaf mineral content and improving the chemical characteristics of berries as total soluble solids (TSS), total acidity (TA) and Tss /acid ratio and decreasing nitrate and nitrite content in the berries.

The Efficiency of Using Vermicompost and Some Bio-Safe Stimulants in Recovering Yield and Quality of Flame Seedless cv. in Degraded Vineyard

“…Similarly, The beneficial effects of these organic and biofertilizers in enhancing the extraction of soil hormones and cytokinins production , root development, nutrients solubility and soil workability were the best treatments for improving yield of Thompson Seedless grapevines El-Mahdy et al, (2017). Also, increasing the soil posture will be reflected on increasing yield and productivity of different grape varieties which was confirmed by (Yeole, 2021; Abd El-Rahman and Bakr, 2022).…”

“…On Thompson Seedless and Superior seedless grapevines (EL-Mahdy et al, 2017;El-Salhy et al, 2017 andEl-Rahman andBakr, 2022) they explained the positive action of (50% inorganic + 50% organic + biofertlizer) in increasing leaf petioles nutrients content were mainly due in enhancing soil organic matter, microbial activity, soil aggregation and aeration, soil permeability, photosynthesis process, fixation of N, root development, nutrient availability and transportation.…”

Effect of Tipping and Foliar Application of Proline and Botminn Plus on Yield and Quality of Grapevine (Vitis vinifera L.) cv. Khoshnaw

“…Regarding the role of botminn plus in improving grape parameters may be approved to the role of its contents (Humic & Fulvic Acid 16%, Organic Matter 37% Nitrogen (N), 1.50%, Potassium Oxide (K 2 O) 4% and pH 4-6) on increasing vegetative growth and improving the nutritional status of grapevines as well as increasing and improving yield [38,52]. likewise, these fertilizers have great advantages such as availability and releasing of most nutrients [39].…”