The influence on fruit quality of peach × almond hybrids 'Adafuel', 'Adarcias' and 'GF 677', as rootstocks for 'Catherina' peach cv. and 'Flavortop' nectarine cv. were tested in two trials. The experiment was performed in the Ebro Valley, on a heavy and calcareous soil. To evaluate fruit quality, parameters such as fruit size, fruit weight, colour, firmness and some chemical properties of the fruit (acidity, pH and soluble solid concentration) were measured. In addition, the most important sugars found in fruit juice (sucrose, glucose, fructose and sorbitol) were analysed by High Performance Liquid Chromatography (HPLC). Significant differences in sugar concentrations, colour parameters, fruit weight and size were found among rootstocks. Nevertheless, no differences were shown for firmness. Preliminary results indicate that 'Adarcias' rootstock induces the highest soluble solid concentrations. INTRODUCTIONFor optimal orchard production it is essential that the size, organoleptic characteristics and nutritional composition of the fruit should be adequate. In general, the influence of rootstocks on the vigour and yield of the cultivar has been well demonstrated in the published literature. However, few studies address the quality characteristics of the fruit in relation to tree condition and rootstock influence. The study of this influence is a novel aspect.The present field test was carried out over three years with 'Catherina' peach and 'Flavortop' nectarine grafted on peach x almond hybrid rootstocks, grown on calcareous soil conditions. The objective was to determine the relative influence of the rootstock on fruit quality parameters such as fruit size, fresh weigh, colour, firmness and some chemical fruit properties (acidity, pH and soluble solid content).
Garella musculana (Erschov, 1874) is an important walnut pest originating in Central Asia. It was found in 2008 in Ukraine, and more recently in Turkey and Bulgaria. The Asian walnut moth was observed in Romania during studies conducted in Albesti and Arsa province between 2018 and 2020. G. musculana was observed on both saplings and 50-year-old walnut (Juglans regia) trees in Romania.This paper presents the first record for Romania.
The influence of CAB 6P, CAB 11E, Masto de Montañana (MM 9), MaxMa 14, MaxMa 97, GM 61/1 (Damil), Colt and Sainte Lucie GF 64 (SL 64) rootstocks on fruit quality of 'Sunburst' sweet cherry is studied. The experiment was performed in the Ebro Valley (Zaragoza, Spain), on a heavy and calcareous soil. To evaluate the effect of rootstocks, parameters such as fruit size, fresh weight, colour, firmness and some chemical fruit properties (acidity, pH and soluble solid content) have been determined. In addition, the most important sugars present in fruit juice (glucose, fructose and sorbitol), were analysed by High Performance Liquid Chromatography (HPLC). Significant differences in sugar concentrations, colour parameters, fruit weight and firmness were found among rootstocks. The highest fruit weight and diameter were induced by P. cerasus and 'Colt' rootstocks, especially for the high-yielding years. Preliminary results indicate that rootstocks with high total soluble solids in fruits also showed high values for fruit firmness.
Ülkemizde ilk kez 2014 yılında Yalova'da tespit edilen Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) geçen süre zarfında kestane alanlarında yayılmaya devam etmiştir. Kestanenin en önemli zararlısı konumuna gelen Gal arısı ile mücadele çalışmaları devam etmekle birlikte zamanla diğer illerimizden de zararlının görüldüğüne dair tespitler bulunmaktadır. En son olarak ise Zonguldak ve Bartın illerinde yapılan arazi surveylerinde zararlının galleri tespit edilmiştir. Bu illerimizde şu an için sınırlı yayılışı bilinen zararlı ile bir an önce mücadele çalışmalarına başlanmalıdır.
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