Scale-specific land cover thresholds for conservation of stream invertebrate communities in agricultural landscapes     

Jeremy P. Grimstead  Edward M. Krynak  Adam G. Yates 《Landscape Ecology》2018,33(12):2239-2252

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The Response of Soilless Grown ‘Michele Palieri’ (<Emphasis Type="Italic">Vitis vinifera</Emphasis> L.) Grapevine Cultivar to Deficit Irrigation Under the Effects of Different Rootstocks     

Ali Sabir  Zekiye Sahin 《Erwerbs-Obstbau》2018,60(1):21-30

Global warming, altering the physiology and irrigation demand of grapevines, has already been perceived in certain premium viticulture regions across the world. Selection of proper rootstocks for especially new cultivars has vital role for a sustainable viticulture under water-deficit conditions. The grapevine cultivar ‘Michele Palieri’ has been finding a good reception on the global markets. The objective of this study was to determine the response of ‘Michele Palieri’ cultivar to deficit irrigation using different rootstocks with distinct genetic origins. Two irrigation regimes (Full Irrigation [FI] and Deficit Irrigation [DI]) were applied to the vines of different grafting combinations of ‘Michele Palieri’ with Kober 5 BB, Richter 99, Richter 110, 140 Ruggeri, 44–53 Malégue or grown on own roots. Two years old vines were cultivated in 60?L pots containing sterile peat under controlled glasshouse conditions. Irrigations were regulated according to soil water matric potential (Ψm) levels using tensiometers. The volume of the irrigation water that has to be applied to attain 100% field capacity was performed as FI, while 50% of FI was considered as DI. The water was transported directly into the pots by micro-irrigation systems consisting of individual spaghetti tubes. The vines of DI treatment showed visible symptoms of mild water stress (e.?g., loss of turgor in shoot tips), but no defoliation or leaf necrosis occurred. DI treatment reduced the gs of ‘Michele Palieri’ scion cultivar in varying levels depending on the rootstock. DI treatment also affected vegetative growth of the scion cultivar in different levels. For example, the greatest decrease (26.7%) in shoot length resulting from DI was determined in ‘Michele Palieri’/5 BB grapevines, followed by own rooted vines (13.1%), while the lowest change (2.4%) was found in vines grafted on 110?R. Overall findings of this study imply that the rootstocks originating from V. berlandiery?×?V. rupestris hybrids (110?R, 99?R, 140?Ru and 44–53?M) better performed in a similar genetic aptitude under deficit irrigation regime while the rootstock 5 BB (V. berlandiery?×?V. rupestris) showed more susceptible responses. On the other hand, the general response of own rooted vines were better than those grafted on 5 BB. Therefore, the use of one of V. berlandiery?×?V. rupestris hybrids may be a better choice for viticulture under semiarid regions.  相似文献   

Erratum to: Leaf Removal Treatments Combined with Kaolin Particle Film Technique from Different Directions of Grapevine’s Canopy Affect the Composition of Phytochemicals of cv. Muscat Hamburg (<Emphasis Type="Italic">V. Vinifera</Emphasis> L.)     

Demir Kok  Erdinc Bal 《Erwerbs-Obstbau》2018,60(1):87-88

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Energy Analysis and Emissions of Greenhouse Gases of Pomegranate Production in Antalya Province of Turkey     

Asaf Ozalp  Serpil Yilmaz  Can Ertekin  Ibrahim Yilmaz 《Erwerbs-Obstbau》2018,60(4):321-329

In this study, energy use patterns and the functional relationship between energy inputs and output for pomegranate production were investigated in Antalya province in Turkey. It further objective to identify greenhouse gas (GHG) emissions in pomegranate production. Data were obtained from 75 farms using face-to-face interview method. The results indicated that 50,605.5?MJ ? ha^?1 of total energy input was required for 76,252.3?MG ? ha^?1 pomegranate energy output. 1.51 unit energy output was provided by using 1 unit energy input. 1 unit energy output and 1?kg pomegranate require 0.66 unit and 2.57?MJ energy input, respectively. The average CO₂ emission amounts were also calculated to be 1.73?t CO₂ per hectare and 88.1?kg CO₂ per 1000?kg pomegranate production. Electricity, fertilizers and pesticides were the highest contributors to GHG emissions. Both total energy input usage and GHG emission amounts have been found to be decreasing as the farm size increases. Increasing scale of pomegranates orchards will not only increase energy efficiency and productivity but also decrease environmental pollution and damages. The regression analysis revealed that, excessive use of machinery and fuel inputs results in a decline in energy production in pomegranate.  相似文献   

Influence of Different Soilless Substrates to Morpho-physiological Characteristics and Yield Relations in Strawberries     

Nafiye Adak  Ilhami Tozlu  Hamide Gubbuk 《Erwerbs-Obstbau》2018,60(4):341-348

Some of the advantages of soilless production systems over conventional systems are higher yield, better pest control management and more efficient labor use. Among berries, strawberry responds quite well to soilless production systems. Major yield-affecting factors for strawberries in soilless systems may be listed as; growing medium, source and types of plantlets, density of plants and efficiency of fertigation system. The present research was conducted with strawberry plants (Fragaria x ananassa ‘Camarosa’) grown in four different media; (1) Cocopeat (C), (2) Peat (P) and (3 and 4) 1:1 mixtures with Pumice (Pu), to evaluate the effects of soilless media on marketable yield and root-shoot morpho-physiological parameters. Correlation measurements were made to assess if there is any interaction between yield and any tested morpho-physiological feature. The experiment was conducted in greenhouse, using frigo plantlets (11.6 plantlet/m²) planted in July and through 1 June of following year. Results showed that growth medium had an effect on yield, numbers of developed leaves, shoot-root dry mass, number and length of roots. Yield was correlated with these morphological features. Growth medium also had an influence on plant nutrient accumulations i.?e., shoot accumulation of nitrogen (N) and potassium (K) and root accumulation of phosphorus (P) and all the micro-nutrients that with exception of boron (B). There were some interactions between yield and plant nutrient content of tissues determined by correlation analyses. The most striking were negative correlations with yield and shoot N–K amounts and positive correlation with yield and root P amount. Some positive correlations were also found between yield and copper (Cu), manganese (Mn) and zinc (Zn) contents of both shoot and root tissues. Boron (B) contents was correlated only with the root tissues. The medium which had the best overall performance for soilless strawberry production was C?+?Pu and should be recommended to be used with frigo plantlets of ‘Camarosa’.  相似文献   

Determining the Internal Connection Ratios by MRI and Their Effects on Grafted Rooted Vine Growing Features of cvs. Merlot and Syrah     

İlknur Korkutal  Elman Bahar  Ayse Guldal Ozdemir 《Erwerbs-Obstbau》2018,60(1):61-69

This experiment was carried out to determine the percentage of internal connection between rootstock and scion in graft union with nondestructive and noninvasive MRI (Magnetic Resonance Imaging) method and to follow performance status according to internal connection ratios of the grafted rooted vines after planting to vineyard field. Research was established in a factorial randomized block design and carried out with cvs. Merlot and Syrah grafted onto 110?R rootstock and 4 different internal (MRI) connection levels in 3 replications. The percentages of grafted rooted vine internal determination by MRI by four sides (13.75%) in graft union were found to be very low than others at the pre-planting stage. An increase in the internal connection ratio in the majority of the grafted rooted vines was determined after the vegetative growth phase. Therefore, the internal connection ratios of the graft union of rooted vines of cvs. Merlot and Syrah varieties showed a tendency to increase during the second year of development. Again in both cultivars, loss rate of grafted rooted vines showed a decreasing tendency depending on increase of internal connection ratio of graft union. As a result, in case of decrease of MRI costs, it is thought that grafted rooted vine producers may have the opportunity to supply better quality seedlings to vine growers using MRI techniques.  相似文献   

Comparison of Climate Change Effects on Pome And Stone Fruit Phenology Between Balkan Countries and Bonn/Germany     

Pakeza Drkenda  Osman Musić  Slađana Marić  Darko Jevremović  Sanja Radičević  Metka Hudina  Sabina Hodžić  Achim Kunz  Michael M. Blanke 《Erwerbs-Obstbau》2018,60(4):295-304

The objective of the joint project between the two universities of Bonn and Sarajevo was to study the effects of climate change associated with warmer winter and spring temperatures on fruit tree phenology. Changes in flowering date of apple and cherry were correlated with local weather data obtained concomitantly on-site at four locations in the Balkan countries Slovenia, Serbia, B & H and at Bonn, Germany.Phenological data of flower opening (F1; BBCH 61) of apple cv. ‘Golden Delicious’ originated from 55 years at Cacak (44?°N, Serbia) and at Klein-Altendorf, University of Bonn (50?°N), cv. ‘Bobovec’ from the University of Ljubljana (46?°N, Slovenia) and cherry cv. ‘Burlat’ (35 years at Klein-Altendorf, 50?°N) and 20–30 years at Tuzla (44?°N, B & H) and Mostar (43?°N, Bosnia & Herzegovina; B & H).The annual precipitation showed a negligible change in the last 55 years of ±5% in the Balkan countries (e.?g. Cacak, 699?mm), but only ±1.8% at Klein-Altendorf (605?mm) with a slight shift to more winter rainfall.Regression analysis showed an increase in mean temperature of 1.7?°C (annual) and 1.45?°C for the vegetation period at Klein-Altendorf (last 55 years), Germany. In the evaluated Balkan stations, the greatest increase in annual air temperature between two climate phases (until 1987 versus from 1988 until now) was at Ljubljana (1.4?°C) and Cacak (1.2?°C) in contrast to the least increase (0.3?°C) at Tuzla (annual average 10?°C) and an intermediate value (0.9?°C) in the warmer Mostar (annual average 14.5?°C).This recent temperature increase advanced flower opening by 10–14 days for apple such as cv. ‘Golden Delicious’ at Cacak and 7–10 days (last 55 years) at Bonn and 4–5 days (last 35 years) for the early cherry cv. ‘Burlat’ at Klein-Altendorf/Bonn; at Mostar and Tuzla, the effect of climate change was greater with the early cherry cv. ‘Burlat’ (26 days) compared with the difference of the late cherry cultivar (16 days). Before recent climate change (1973–1987), cherry flower was advanced by 10 days in the warmer med climate at Mostar but delayed by 16 days in the cooler Tuzla. The results, i.?e. the flower advancement in the Continental climate but flower delay in the med climate, are discussed with respect to the risk of late frost and countermeasures to combat climate change effects.  相似文献   

Non-Destructive Evaluation of Edible Coatings Effects on Keeping Quality of European Plums (<Emphasis Type="Italic">Prunus domestica</Emphasis> L.) by Laser Light Backscattering Imaging     

Yousef Rezaei Kalaj  Martin Geyer  Werner B. Herppich 《Erwerbs-Obstbau》2018,60(4):311-320

Fruits of European plum (Prunus domestica L.) show high rates of transpiration. Consequently, they are highly perishable fruit. In the present study, the potential of an edible coating (Versasheen®-based with sorbitol as plasticizer) to improve storage life and keeping quality was evaluated on fruit of the plum cultivars ‘Jojo’ and ‘Tophit plus’. Plums were picked at commercial harvest date and stored at 2?±?0.5?°C (90?±?2% rh) for up to 28?d plus 2?d at 20?°C to simulate shelf life. Every seventh day, plums were analysed for transpiration, colour changes and laser light backscattering imaging (LLBI) at a wavelength of 785?nm to non-destructively investigate variations in quality properties of plums. Finally, fruit flesh firmness, soluble solids content, and titratable acidity were determined destructively. Results indicated that coating of fruit of both cultivars increased their surface resistance against water vapour transfer resulting in lower transpiration rates and thus lower mass losses compared to controls. Consequently, coating of fruit considerably delayed the decrease in flesh firmness. Moreover, edible coating retarded the increase of FWHM785 in coated plums. In this context, FWHM785 proved as a rapid and non-destructive tool to monitor changes in mechanical properties in heavily coloured plums. Results highlight that edible coatings successfully extend post-harvest life of plums.  相似文献   

Evaluation of Pomological and Morphological Characteristics and Chemical Compositions of Local Pear Varieties (<Emphasis Type="Italic">Pyrus communis</Emphasis> L.) Grown in Gumushane,Turkey     

Ozgun Kalkisim  Zuhal Okcu  Besim Karabulut  Duygu Ozdes  Celal Duran 《Erwerbs-Obstbau》2018,60(2):173-181

The aim of the present research was to investigate the fruit quality of twenty different local pear varieties (Pyrus communis L.), namely Ahlat, Ankara, Arpa, B?ld?rc?n, Çermai, Cinci, Gelin Bo?an, Hac? Hamza, Hah?r, Kabak, K?z?l, Kokulu, Mehrani, Menendi, Sulu, ?algam, Tokat Sultan?, Tur?u, Yaz, and Yaz Meyri?i, grown in Gumushane province in terms of pomological and morphological characteristics and chemical compositions. The fruit mass, fruit width and length, fruit stem thickness and length, fruit kernel width and length, hardness of pulp, number of seeds, leaf width and length, leaf stem length and thickness, and water soluble dry matter (WSDM) of the pear fruits have been determined as pomological and morphological characteristics. On the other hand, the chemical compositions of the pear varieties have been evaluated in terms of protein, ash, sucrose, fructose, glucose, total sugar, titratable acidity, moisture, and mineral element levels.Both pomological and morphological results demonstrated that the local pear varieties are important in terms of rehabilitation studies and detailed selection studies on these local varieties should be performed. The chemical analyses result of the pear varieties revealed that there is no component that may be harmful to human health when consumed, and also these varieties contains the necessary amount of mineral elements.  相似文献   

Antimicrobial,Antioxidant, and Antimutagenic Activities of Five Turkish Pear Cultivars     

Nurcan Erbil  Zehra Tugba Murathan  Mehmet Arslan  Ahmet Ilcim  Bilge Sayin 《Erwerbs-Obstbau》2018,60(3):203-209

The pear (Pyrus spp.) is one of the most important fruits consumed in daily life. The aim of this study was to determine the total phenolic and ascorbic acid contents, as well as the antimicrobial, antioxidant, and antimutagenic activities, of various pear cultivars. The fruits of five pear (Pyrus communis L.) cultivars (‘Deveci’, ‘Kizil’, ‘Egirsah’, ‘Gugum’, and ‘Banda’) were used in this study. It was determined that the peel and pulp of the ‘Kizil’ pear had the highest total phenolic content (402.5?mg/100?g and 215.2?mg/100?g, respectively), while those of the ‘Banda’ pear had the lowest total phenolic content (326?mg/100?g and 126.1?mg/100?g, respectively). Additionally, the ‘Kizil’ pear showed the highest antioxidant capacity in the 2,2’-azino-bis(3-ethylbenzothiazoline-6-6-sulphonic acid) (ABTS) and ferric-reducing ability assay (FRAP) (1.72 μmol TE/g FW and 161.25?μmol Fe II/g FW, respectively) and the highest ascorbic acid content (16.02?mg/100?g). The ‘Banda’ pear showed the highest antibacterial activity against the test bacteria. However, none of the pear extracts displayed antifungal activity. While all doses of the ‘Kizil’, ‘Gugum’, and ‘Banda’ pear extracts used in this study, except 80?μL/plate, exhibited antimutagenic activities, only the lowest dose (10?μL/plate) of the ‘Deveci’ pear extract showed the antimutagenic activity against induced mutagenesis in the Salmonella typhimurium TA 98 strain. Consequently, the five Turkish pear cultivars used in this study exhibited different levels of antimicrobial, antioxidant, and antimutagenic activities.  相似文献