scholarly journals Ecology and Control of Eriophyid Mites Injurious to Fruit Trees in Japan

2004 ◽  
Vol 38 (1) ◽  
pp. 31-41 ◽  
Author(s):  
Wataru ASHIHARA ◽  
Akira KONDO ◽  
Manabu SHIBAO ◽  
Hiroshi TANAKA ◽  
Katsumi HIEHATA ◽  
...  
Prunus ◽  
2020 ◽  
Author(s):  
Naira Ashraf ◽  
Moieza Ashraf

Paclobutrazol (PBZ; IUPAC name: (2RS, 3RS)-1-(4-chlorophenyl)-4, 4-dimethyl-2-(1H-1, 2, 4-triazol-1-yl) pentan-3-ol) is a triazol derivative and an antagonist of gibberellins. It has been shown to inhibit shoot growth in various perennial fruit trees. Paclobutrazol application reduced the number of shoots, transforming trees into a more desirable, spur-type growth habit as the vegetative sink was reduced. This compound induces an early and intense flowering, diminishing vegetative growth and reducing the extension of buds, allowing for ripening and the initiation of apical buds inflorescence. Besides, it also increases fruit set, the years following application as a carryover effect. An increase in return bloom is a common response to paclobutrazol treatment and has been reported for various fruit crops. Paclobutrazol is widely used to advance harvest maturity in various fruit crops and it improves fruit quality in terms of accelerated colour development, delayed and synchronized fruit maturation and control of preharvest fruit drop. It is known to improve fruit physical and fruit chemical characteristics. Fruit calcium is increased for 2–3 years due to carry over effect. It helps in the maintenance of better fruit quality during storage and influences nutrient uptake in various fruit crops including stone fruits. It has been characterized as an environmentally stable compound in soil and water environments with a long half-life under both aerobic and anaerobic conditions.


Zootaxa ◽  
2012 ◽  
Vol 3230 (1) ◽  
pp. 67
Author(s):  
ROBERTO H. GONZÁLEZ ◽  
ERNESTO PRADO

In July of 2011, we each became aware that we were studying the same Chilean mealybug species.  The research by González (2011) emphasized the biology, economic importance, and control of the species on fruit, and described it as the new species Pseudococcus rubigena González.  The research by Prado in Correa et al. (2011) provided a detailed description using molecular and morphological data and described the new species as P. meridionalis Prado.  Based on the Principle of Priority (Article 23) in the International Code of Zoological Nomenclature (1999), one of these names must have precedence.  Unfortunately, both papers were published at approximately the same time.  The date of publication of the Correa et al. paper is clearly marked as June 22, 2011.  The exact date of publication of the González book was not clear because it did not give a specific date, only 2011.  To establish the exact date, a certificate of publication was requested from the publisher (Imprenta Italiana Ltda.) by González.  In a letter dated November 23, 2011, Nelson Cannoni  M.,  Gerente General,  Impreta  Italiana  indicated “ULTIMO DESPACHO DE EJEMPLARES: 30 de junio de 2011.” This is considered the date of publication for the name P. rubigena which was predated by P. meridionalis by just nine days.  Therefore the following synonymy is proposed.


The story of East Malling Research Station begins in 1913 when the Wye College Fruit Experiment Station was founded under Wellington, the first Director, as the result of representations by the fruitgrowers of Kent, Surrey and Sussex. At this time Spencer Pickering was demonstrating, on the Duke of Bedford’s Experimental Fruit Farm at Woburn, the wide field to be explored in the scientific study of fruit culture, and was already struggling with the great experimental difficulties arising from the heterogeneity of his plant material. The National Fruit and Cider Institute at Long Ashton, founded in 1903, was developing its work under Professor Barker while the John Innes Horticultural Institution, now in its new home at Bayfordbury, had been founded only two years before. The broad climatic distinctions between the fruitgrowing areas of the south east, in the heart of which East Malling is situated, and of those of the south west, served by the Long Ashton Research Station, are illustrated in figure 1, together with the acreage under tree fruits in each county. Wellington defined the task of the Experiment Station upon its foundation as ‘The study of problems which are met with in the actual culture of fruit trees and bushes.’ He emphasized the need for the study of the fundamental processes involved in the growth of the tree and pointed out that an essential preliminary was to identify and control the factors producing variation in growth, in yield, and in response to cultural treatments. He gave pride of place in the programme to the problems of rootstock effects, but work was also envisaged on propagation, on incompatibility and double working, on pruning and on manuring of tree fruits, while investigations on soft fruits and hops were also planned.


2007 ◽  
Vol 33 (4) ◽  
pp. 347-351
Author(s):  
Erika P.J. Britto ◽  
Manoel G.C. Gondim ◽  
Denise Navia ◽  
Carlos H.W. Flechtmann

2012 ◽  
Vol 29 (2) ◽  
pp. 63-69 ◽  
Author(s):  
Soheil Karimi ◽  
Abbas Yadollahi

Abstract GF677 is an interspecific hybrid which has important value in terms of economic and horticultural characteristics. The use of this rootstock for some stone fruit trees including almond and peach has been increased dramatically in recent years. It has some useful characteristics i.e. high tolerance to calcareous soil, a strong root system and suitability for poor soils, but its propagation is difficult. This study aimed to evaluate the effect of putrescine (PUT) on the rooting of GF677 cuttings under mist conditions. Treatments used include PUT concentrations (2 and 4 mM for 5 minutes), indole-3-butyric acid (IBA) using the quickdip method (1500 and 3000 mg l-1 for five seconds), and a commercial rooting powder and control (without any rooting substances). Treatments were applied at the end of the dormant season. Growth data were obtained 120 days after the treatments. The results showed that application of 1500 mg l-1 of IBA and commercial rooting powder improved GF677 rooting, but 3000 mg l-1 of IBA resulted in toxic effects on rooting and foliage of the cuttings. Cuttings treated with PUT solutions showed the best roots and shoots in terms of the number and quality. In conclusion, IBA may be replaced by PUT in the rooting process of GF677 cuttings.


Author(s):  
Edīte Kaufmane ◽  
Māra Skrīvele ◽  
Laila Ikase

Abstract In all times, fruit trees for family use have been grown at Latvian farms. Yet these fruits obtained market value only after the land ownership reform in 19th century. This facilitated rapid area increase of different fruit crops, allowing supply with fruits not only the local market, but also for export to the largest cities of Russia. Especially fast development of fruit-growing was observed during the first independent republic (1919–1940). The demand for planting material increased, and plants were imported from Western Europe. Choice of unsuitable cultivars and rootstocks was the main reason of the massive orchard area loss during the following severe winters. After the Second World War, the Soviet powers supported only the establishment of large orchards for processing needs, 200-300 ha, which were unsuitable for the Latvian climate and terrain. At the same time, numbers of allotment gardens rapidly increased and part of their produce was sold also on the market. After regaining of independence and private property, interest in fresh fruit and berry production for market, as well as processing, renewed. It was hindered by lack of continuity in experience and knowledge. Diversity of terrain, soils and climate all demand considerate choice of suitable orchard location and cultivars. Direct use of foreign experience often led to failure. At present, development of the fruit industry is most of all hindered by lack of qualified specialists of different levels, which does not allow to establish an appropriate consulting system. Cooperation of growers for easier marketing also is developing too slowly. Insufficient economic and market research does not allow to balance the demand with increase of plantation area, especially for large-scale processing and export, so strategic guidance of the fruit industry is not possible. Development of fruit-growing is hindered also by a lack of continuous long-term support to horticultural science. As a result of research by the Institute of Horticulture: 1) new local breeding fruit crop cultivars were obtained and recommended for commercial orchards; variety testing including growing technologies was initiated in different regions of Latvia; 2) monitoring of harmful and favourable organisms was conducted in plantations, with development of a system for prognosis and control; and 3) research results were transferred to growers through practical recommendations, publications, seminars and demonstrations.


2011 ◽  
Vol 51 (4) ◽  
pp. 435-440 ◽  
Author(s):  
Mirosława Cieślińska

Less Common Phytoplasmas Infecting Stone Fruit TreesPrunusspecies plants can be infected by eight ‘CandidatusPhytoplasma’ (‘Ca.P.’) species classified to eight distinctive taxonomic groups: ‘Ca.P. prunorum’ (16SrX-B), ‘Ca.P. mali’ (16SrX-A), ‘Ca.P. pyri’ (16SrX-C), ‘Ca.P. asteris’ (16SrI), ‘Ca.P. aurantifolia’ (16SrII), ‘Ca. P. ziziphi’ (16SrV), ‘Ca.P. fraxini’ (16SrVII), ‘Ca.P. phoenicium’ (16SrIX) and two potentially new species: ‘Ca.P. pruni’ (16SrIII) and ‘Ca.P. solani’ (16SrXII). These agents occur incidentally in orchards and their impact on stone fruit production is lower than ‘CandidatusPhytoplasma prunorum’. Hosts, geographic distribution, symptoms and insect vectors of these ‘Ca.P.’ species, methods of their identification, and control management are reviewed.


Insects ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 5
Author(s):  
Priscilla Farina ◽  
Giuseppe Mazza ◽  
Claudia Benvenuti ◽  
Ilaria Cutino ◽  
Paolo Giannotti ◽  
...  

Ficus carica L. is one of the earliest cultivated fruit trees, and figs are a typical fruit of the Mediterranean diet and traditional medicine as well. In recent years, a new pest, the black weevil Aclees taiwanensis Kȏno, 1933 (Coleoptera: Curculionidae) native to Asia, has been recorded in France and Italy. Aclees taiwanensis causes the rapid death of the fig tree by its larvae that dig alimentation galleries in the trunk and surface roots, compromising the phloem flux. In Italy, from 2005, the year of the first detection of A. taiwanensis, the fig production has nearly halved, decreasing from 20.09 t to 10.65 t. To date, no specific EU regulation has been applied to prevent the A. taiwanensis spread, and we can reasonably expect a rapid diffusion of this pest all over the Mediterranean area. To avoid the loss of the Mediterranean fig orchards, effective strategies to detect and control the black weevil are required. Such strategies need a detailed knowledge of A. taiwanensis distribution, biology, and physiology. This paper updates the known distribution of this species in Southern Europe, using a citizen science approach, and describes, under laboratory and field conditions, its main biological traits.


Sign in / Sign up

Export Citation Format

Share Document