Using Different Sources of Compost Tea on Grapes

Abstract

The present investigation was carried out during 3 successive seasons from 2008 to 2010. The work in the first year was considered as a preliminary trial. This investigation was conducted on 14-year-old King Ruby grapevines cultivar growing at a private vineyard called Chycheny located at meniet samanood village near Mansoura city, Dakahlia Governorate, Egypt. The study aimed to evaluate the effect of different sources of compost tea with or without citric acid on vegetative growth, leaf mineral content, physical and chemical characteristics of clusters and berries, yield and pruning wood weight. Most tested treatments gave generally a significant increase of different studied parameters especially in the second season of study, where, T7 (compost tea A + compost tea B + citric acid) gave the highest significant increase in shoot length and total chlorophyll content (112.1-144.6 cm), (1.013-0.957 mg/g F.W.) as compared with that of control (91.2-112.6 cm), (0.923-0.695 mg/g F.W.) in 2009 and 2010 seasons, respectively. In addition, T7 gave a significant increase of NPK content in the leaf petioles (2.94 and 2.72 N %), (0.43 and 0.43 P%) and (2.11 and 2.12 K%) as compared with that of control (2.39 and 2.37 N%), (0.27 and 0.27 P%) and (1.16 and 1.17 K%) in 2009 and 2010 seasons, respectively. Also, this treatment gave a pronounced increase in yield/vine (15.90 and 12.00 kg/vine) as compared with that of control (9.03 and 8.07 kg/vine) in 2009 and 2010 seasons, respectively. Same treatments gave higher increase in the total sugars and total anthocyanin content in berry skin (17.133-17.577 %), (45.85-50.14 mg/100g) as compared with that of control (14.19 and 14.56 %), (23.52 and 23.08 mg/100g) in 2009 and 2010 seasons, respectively. Also, T7 gave the highest values on weight of pruning wood at winter season (2.63 and 2.83 kg/vine) comparing with control (2.17 and 1.78 kg/vine) in 2009 and 2010 seasons, respectively.

Effect of Some Biostimulants of Growth, Yield and Berry Quality of King Ruby Grapevines

“…The present results are in the same trend with those mentioned by (Gawad Shaheen et al, 2012) on Crimson seedless grapevines and (El-Boray et al, 2013) on King Ruby who worked on humic acid, (Sabry et al, 2009) on Red Globe, (Abd El-Hameed et al, 2010) on Thompson seedless and (Abd El-Aal et al, 2013) on Superior grapevines who worked on (EM), (Fayed, 2010a) on Thompson seedless and (Mostafa et al, 2011) on King Ruby who worked on ascorbic acid and citric acid. They confirmed that the soil application of humic acid and (EM) and spraying application of ascorbic and citric acid enhanced the absorption of macro-elements as they gave the highest values of N, P and K in leaf petioles as compared with that of control.…”

“…In addition, (Sabry et al, 2009) on Red Globe, (Abd El-Hameed et al, 2010 andAhmed et al, 2011) on Thompson seedless and (Abd El-Aal et al, 2013) on Superior grapevines, they found that vegetative growth parameters were significantly increased by (EM) applied. Also, (Fayed, 2010a) on Thompson seedless, (Mostafa et al, 2011) on King Ruby and (Nerway, 2011) on Rash-Mew grape, they found that spraying ascorbic acid and citric acid increased shoot length, leaf area and total chlorophyll in leaves.…”

“…Pervious studies showed that using antioxidants were beneficial in improving growth, yield and quality of fruits (Fayed, 2010a, Mostafa et al, 2011and Nerway, 2011.…”

Response of Mango Trees to Organic and Biofertilizers in North Sinai

“…Soil application of compost tea gave better effect on fruit yield of pear trees compared to control (Mohamed et al, 2010). Also, Mostafa et al (2011) reported that compost tea produced the maximum yield of grapes. Biofertilizers are the most important for plant production and soil as they play an important role in improving fruit quality and yield of grapevines (Akl et al, 1997).…”

“…Soil application of compost tea gave better effect on macro and micro elements of pear trees (Mohamed et al, 2010). Also, Mostafa et al (2011) reported that compost tea improvement of the nutritional status of grapes. Additionally, the great availability and release of N, P and K due to the application of biofertilizers were announced by Abd-Rabou ( 2006) on avocados and mangos.…”