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Research on Phenotyping and Eno-Carpological Traits of Twenty-Three New Romanian Table Grape Varieties (Vitis Vinifera L.)

Abstract

Twenty-three new Romanian table grapes varieties were analysed for their phenological behaviour, quantitative characteristics (bunch weight, berry weight, their length and width, grape yield), sugar accumulation, titratable acidity, and ºBrix / acid ratio during three consecutive years (2015-2017). The higher temperatures recorded during the study period determined an advance in the development of the main phenophases, especially the grapes’ harvest maturity. Absolute minimum temperatures during winter, damaging the vine, have significantly affected grape yield. As a consequence of earlier phenology and lower yields due to frost damage, harvest was advanced between 2 and 4 weeks than the average. The results obtained in this study favoured five remarkable genotypes for their very good quality of grape (‘Victoria’, ‘Tamina’, ‘Xenia’, ‘Napoca’ and ‘Augusta’). These varieties are distinguished by the highest values for bunch and berry weight (between 300-500 g and 5.5-8.4 g, respectively), berries’ size uniformity, the sugar content between 15.45-21.53 ºBrix and balanced ºBrix / acid ratio. Lately, the high temperatures during the grape maturation period have led to increased accumulations of sugar in berries, to reduced acidity, which affects the sugar-acidity balance; a more careful choice of grape harvest time is needed.

Open access
Estimation of the Economic Efficiency of Blueberry According to the Production System

Abstract

Currently, the blueberry crop systems are continuous diversifing due to the growing demand for fruit on the market as well as the willingness of farmers to invest in profitable blueberries business. The need to extend the fresh-consumption period of blueberry fruits has made crop protection systems be considered appropriate for high-quality and valuable fruits. In the present work, we have proposed to compare the economic efficiency of three blueberry production systems as follows: the normal intensive cultural system in beds, the superintensive cultural system in pots and the superintensive cultural system in pots and plastic covered (high tunnel). The analyze of the cost and profitability of blueberry has been done according to the crop system, taking into consideration several elements such as: the number of plants per hectare, the total duration of the exploitation, the value of the investment, the yield and the cost of production etc. Further more, considering the average sale price of the blueberry fruits in Romania, we have calculated the net annual return, the annual return rate, the cost recovery period, total operating profit, economic return on investment, and average return on investment. We observed that as much the degree of intensification has increased, the value of investment was higher and the spendings has increased too. Blueberry pot production systems with or without plastic protection are especially recommended for smaller surfaces, which in this way can boost the value and their economic potential.

Open access
Evaluation of plum cultivars grafted on ‘Wangenheim Prune’ rootstock in the northeast of Poland

Cultus 9(1): 37-44. Vangd al E., 1985. Quality Criteria for Fruit for Fresh Consumption. Acta Agric. Scand. 35: 41-47. Vávra R., 2012. Evaluation of plum cultivar productivity in commercial orchards in first growing years after planting. Acta Hort. 968: 93-98. Walkowiak-Tomczak D., 2009. The effect of the degree of ripening on physico-chemical properties and contents of polyphenolic compounds in selected cultivars of plum ( Prunus domestica ). Nauka Przyr. Techno. 3,4: 1-9 (In Polish).

Open access