Microelements content in leaves of raspberry cv. Willamette as affected by foliar nutrition and substrates

Abstract

Raspberry (Rubus idaeus L.) cultivar Willamette has long been the most commonly grown raspberry cultivar in Serbia, which is owing to high adaptability of the cultivar to respective agro-environmental conditions. Massive dieback of full bearing plantings is a major problem in raspberry growing hence quality planting material is a must when establishing new raspberry plantings. The study was conducted under protected conditions (in screenhouse) on plants obtained by micropropagation in vitro. In order to achieve optimal vegetative potential, plants were grown for two consecutive years (2004–2005) on two substrates (Steckmedium and Seedling) using three foliar fertilizers (Wuxal, Murtonik and Ferticare). The study revealed optimal vegetative growth in plants studied, excess manganese (150.60-214.52 mg/g), optimum iron content (94.00-123.50 mg/g), and zinc (28.60-31.00 mg/g) and copper (3.10-4.00 mg/g) deficiencies, based on the referent values of microelements content. The assessment of nutritional status of plants by the DOP index suggested significant differences in microelements imbalance when different foliar fertilizers and substrates are applied.

Chemical Composition, Antioxidant and Antimicrobial Activity of Raspberry, Blackberry and Raspberry-Blackberry Hybrid Leaf Buds

“…To our knowledge, there are no literature reports regarding the content of the elements tested in the raspberry and blackberry buds, so they can only be compared to the leaves or fruit of these plants. In raspberry leaves studied by Horuz et al [ 14 ] and Karaklajić-Stajić et al [ 15 ], Fe content ranged from 7.8 mg 100 g −1 to 12.3 mg 100 g −1 and was much lower than the values obtained in our study for raspberry buds (15.90–24.02 mg 100 g −1 ). Kessel [ 16 ] found even smaller Fe content in raspberry leaves ranging from 0.5 to 2 mg 100 g −1 , while Dresler et al [ 17 ] reported that the average Fe content in raspberry leaves was similar to the content of this element in buds and amounted to 19.1 mg 100 g −1 .…”

“…The examples cited and the results of the present study indicate that variation in the mineral composition of plant material is substantial and depends, inter alia, on the plant genotype, its organ, and its physiological maturity, as well as on climate and soil conditions, agrotechnical procedures, and the mobility of a given element in the plant [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. The leaf buds of raspberry are generally richer in minerals than the fruits, but poorer than the leaves (except for Fe, whose content is higher in the leaf buds of this plant than in the leaves).…”

Phenolic Composition, Mineral Content, and Beneficial Bioactivities of Leaf Extracts from Black Currant (Ribes nigrum L.), Raspberry (Rubus idaeus), and Aronia (Aronia melanocarpa)

“…Similar results were obtained by Niskanen et al [37], who investigated the effect of mineral soil fertilization on the content of macroelements in black currant leaves. Karaklajić-Stajić et al [38] studied micronutrients in raspberry leaves, and they found that Fe and Mn were present in the highest concentration among four investigated microelements. Biel and Jaroszewska [39] also stated that among 10 analyzed microelements, Fe and Mn occurred in the highest concentration in raspberry leaves.…”

Zinc Induced Enzymatic Defense Mechanisms inRhizoctoniaRoot Rot Infected Clusterbean Seedlings

“…Microelements are crucial for plant growth since they not only participate in building cell walls, cell membranes (B, Zn), and enzymes (Fe, Mn, Cu) but also affect enzyme activity (Mn, Zn) and photosynthesis (Fe, Cu, Mn) [9]. Mineral nutrients are the first and foremost line of defense against plant disease as they are involved in the formation of physical barrier against pathogen invasion and thus influence all parts of the disease "pyramid" [10,11].…”