61 research outputs found
Corresponding Author Effect of different Substrates and Varieties on Yield and Quality of Strawberry in Soilless Culture
No full textABSTRACT Most growing media for strawberries in soilless culture are peat moss, rockwool, coir, perlite or some other mixtures. Nowadays, using mixture of peat moss and perlite is one of the mostly used substrate for production of hydroponic strawberries in developing countries. The effects of three different media based on 100%: 0, 80%: 20% and 60%: 40% v/v perlite and peat moss were evaluated on quantity and quality of three varieties of strawberry (Fragaria ananassa) in soilless culture. Perlite/ peat moss substrate 100%:0% ratio (v/v) produced the most number of leaves and flowers number and the number of fruits and fruit dry weight were the highest in both substrates of 100%:0 and 60%:40% perlite/peat moss. Fresno variety had the highest number of leaves production between three studied varietie., However, both Fresno and Selva had the highest number of fruits and fruit dry weight and the difference between these two varieties were not significant. All in all, the results showed that based on the goals of planting strawberries, both Fresno and Selva varieties and also 100%:0 and 60%:40% perlite/peat moss are the best ones in production of strawberries in Iran
Effect of humic acid on nutrient uptake and physiological characteristic fragaria ananassa var: Camarosa
No full textThe investigation was carried out for evaluation effects of humic acid fertilizer on nutrient uptake (N, P, and K) and physiological characteristics of Fragaria ananassa var: Camarosa. Experiment treatments included different concentration of humic acid (0, 10, 20, 30 and 40 ppm) with two methods of application (fertigation and spray). Result of experiment showed that there is highest amount of N in fertigation in concentration of 20 ppm and there are highest of Phosphorus, potassium and amount of assimilation in concentration of 10 ppm. In spray method there are highest amount of N and chlorophyll in concentrations of 10 and 20 ppm and there is potassium in concentration of 10 ppm
Effect of essential oils, ethanol and methanol to extend the vase-life of carnation (dianthus caryophyllus L.) flowers
No full textIn this study we investigated the effect of some essential oils, ethanol and methanol as novel and old antimicrobial agents (respectively) in extending the vase-life of Carnation (Dianthus caryophyllus L.) flowers. Cut flowers of carnation were kept in solution containing essential oils of Thyme, Black cumin and Peppermint (50 and 100 mgL−1 ), ethanol, methanol (4, 7 and 10%) and control. Data showed just solution containing ethanol 7% could increase flower longevity than control. Vase life and flower fresh weight losses in solution containing essential oils didn’t have significantly difference than control, ethanol and methanol. Maximum solution uptake was observed for flower kept in solution containing ethanol 4%. Totally our results suggest the application of ethanol and methanol in preservative solutions for carnation flowers
Effect of essential oils, ethanol and methanol to extend the vase-life of carnation (dianthus caryophyllus L.) flowers
No full textIn this study we investigated the effect of some essential oils, ethanol and methanol as novel and old antimicrobial agents (respectively) in extending the vase-life of Carnation (Dianthus caryophyllus L.) flowers. Cut flowers of carnation were kept in solution containing essential oils of Thyme, Black cumin and Peppermint (50 and 100 mgL−1 ), ethanol, methanol (4, 7 and 10%) and control. Data showed just solution containing ethanol 7% could increase flower longevity than control. Vase life and flower fresh weight losses in solution containing essential oils didn’t have significantly difference than control, ethanol and methanol. Maximum solution uptake was observed for flower kept in solution containing ethanol 4%. Totally our results suggest the application of ethanol and methanol in preservative solutions for carnation flowers
Cluster Management to Improve Berry Quality in Young ‘Alborz’ Table Grape in the Intermountain West Region, USA
No full textEffect of essential oils, ethanol and methanol to extend the vase-life of carnation (dianthus caryophyllus L.) flowers
No full textIn this study we investigated the effect of some essential oils, ethanol and methanol as novel and old antimicrobial agents (respectively) in extending the vase-life of Carnation (Dianthus caryophyllus L.) flowers. Cut flowers of carnation were kept in solution containing essential oils of Thyme, Black cumin and Peppermint (50 and 100 mgL−1 ), ethanol, methanol (4, 7 and 10%) and control. Data showed just solution containing ethanol 7% could increase flower longevity than control. Vase life and flower fresh weight losses in solution containing essential oils didn’t have significantly difference than control, ethanol and methanol. Maximum solution uptake was observed for flower kept in solution containing ethanol 4%. Totally our results suggest the application of ethanol and methanol in preservative solutions for carnation flowers
Effect of ethanol, methanol and essential oils as novel agents to improve vase-life of alstroemeria flowers
No full textThe production of Alstroemeria flowers has been rapidly increasing in the world. In this research effect of different concentrations of ethanol (4, 7, 10%) methanol (4, 7, 10%) as pulse treatments and some essential oils (50 or 100 mg L−1 peppermint (Mentha piperata L.), thyme (Thymus vulgaris L.) and black cumin (Bunium persicum (Boiss.) B. Fedtsch)) on flower longevity, solution uptake, fresh weight and SPAD value as a measure of leaf greenness of Alstroemeria peruviana ‘santorini’ were analyzed. Results showed alcohol treatments had no positive effect on increasing vase life of Alstroemeria. Applying essential oils could extend the vase-life. The greatest longevity of vase life was related to 50 mg L−1 of thyme essential oil treatment and approximately it improved inflorescence cut vase life more than 2 days longer than control treatment. The greatest solution uptake and decrease in fresh weight were seen in 100 mg L−1 peppermint essential oil and 100 mg L−1 thyme essential oil, respectively. Essential oils could not maintain SPAD value in higher amount than control treatment but these compounds particularly 50 mg L−1 thyme, peppermint and black cumin essential oil are useful for increasing vase life of Alstroemeria
Pomegranate seed clustering by machine vision
No full textApplication of new procedures for reliable and fast recognition and classification of seeds in the agricultural industry is very important. Recent advances in computer image analysis made applicable the approach of automated quantitative analysis in order to group cultivars according to minor differences in seed traits that would be indiscernible in ocular inspection. In this work, in order to cluster 20 cultivars of pomegranate seed, nine image features and 21 physicochemical properties of them were extracted. The aim of this study was to evaluate if the information extracted from image of pomegranate seeds could be used instead of time‐consuming and partly expensive experiments of measuring their physicochemical properties. After data reduction with principal component analysis (PCA), different kinds of overlapping between these two types of data were controlled. The results showed that clustering base on all variables of image features contain more similar cultivars with clustering base on physicochemical properties (66.67% for cluster 1, 75% for cluster 2, and 50% for cluster 3). Therefore, by applying image analysis technique, the seeds almost were placed in different pomegranate clusters without spending time and additional costs
Assessing chilling and drought tolerance of different plant genera on extensive green roofs in an arid climate region in Iran
No full textMorpho-physiological and biochemical responses of four ornamental herbaceous species to water stress
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