Impact of foliar application with seaweed extract, amino acids and vitamins on yield and berry quality of some Grapevine cultivars

Abstract

Experiments were conducted during four consecutive seasons of 2017, 2018, 2019 and 2020 on three grape cultivars including "Bez-El-Anza", "Thompson Seedless" and "Red Roomy" planted at the Experimental Orchard of fruit section, Faculty of Agriculture, Assiut University in a complete randomized blocked design. This investigation was carried out to study the effect of spraying Seaweed extract, Amino acids and Vitamins on C/N ratio, yield and berry quality of some grape cultivars. The obtained results showed that Tyrosin at 500 ppm recorded the highest yield (9.47 kg/vine) during the 1 st season. All treatments had a significant impact in the respect of TSS %, acidity% and TSS/acid ratio. Concerning C/N ratio, Vit.B12 at 150 ppm recorded the highest ratio (44.85) during the 1 st season. Hence, the present study concluded applications of Seaweed extract, amino acid and Vitamins improved vine C/N ratio, yield and berry attributes of "Bez-El-Anza", "Thompson Seedless" and "Red Roomy" grape cultivars.

Effect of Tryptophan, Proline and Tyrosine on Vegetative Growth, Yield and Fruit Quality of Red Roumy grapevines

“…The positive effect of amino acid on improving pruning wood weight, ripening wood, internode length and thickness could be attributed to its major role on stimulating cell division and elongation, carbohydrate assimilation, photosynthesis, nucleic acid and protein synthesis (El-Sese et al, 2020) and this reflected on improving vegetative growth, physiological status and subsequently, reflected on improving the previous properties.…”

“…El-Sherbeny and Da silva (2013) found that using tyrosine improve to be successful agents in enhancing vegetative growth and production quality of beet plants, Beet root producers can effectively use these tyrosine to improve crop for edible purposes and to improvement pigments for extraction for use in colouration and medicinal industries. El-Sese et al (2020) showed that tyrosine at 500 ppm recorded the highest yield of Red Roumy grapevine.…”

Influence of Spraying Some Biostimulants on Yield, Fruit Quality, Oil Fruit Content and Nutritional Status of Olive (Olea europaea L.) under Salinity

“…Hass and Shepard [101]. It was reported by many authors that spraying SWE was more effective in enhancing vegetative growth, yield, fruit chemical and physical characteristics and the nutritional status of grapes when compared to untreated trees [102][103][104]. In previous studies, it was found that treating orange trees with SWE led to an increase in the maturity index and yield, while simultaneously reducing fruit drop [105,106].…”