insect pests of tea tree can plantation pests be managed
Báo cáo nghiên cứu khoa học: "STUDY ON THE ANTIBACTERIAN CHARACTERISTICS OF TEA TREE OIL AND ITS APPLICATION IN COSMETICS" ppt
Ngày tải lên :
22/07/2014, 03:20
... the tea tree oil have the antibacterial effect - The accepted dose of all fractions of the tea tree oil in practical use is 0.25% - By adding 1% of the emulsifying reagent Tween-80, 0.25% of the ... activity of the fractions of lower terpinen-4-ol composition points out that beside terpinen-4-ol, other components in the tea tree oil have also the added effect of antibacterium 3.3.Investigation of ... Development of the North Queensland Tea Tree Industry, (1998) [12] C F Carson, T V Riley, Antimicrobial Activity of Tea Tree Oil, DPIE Copy Centre, (1998) [13] Southwell et all, Quality assurance for Tea...
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Báo cáo lâm nghiệp: "Effect of plant age, temperature and rainfall on Lepidoptera insect pests collected with light traps in a Eucalyptus grandis plantation in Brazil" docx
Ngày tải lên :
08/08/2014, 00:21
... with the t test The effect of age of the plantation on monthly mean annual number of individuals of primary and secondary pests species and of those with highest number to individuals collected ... five years of collection over data of temperature and rainfall to prepare the graphics The total number of individuals of Lepidoptera major and lesser important pests and of those of the most ... eucalyptus plantations [6, 7, 25] Preference of insect defoliators for younger or older eucalyptus plants can be due to difference in the foliage with tree age [14] Juvenile leaves of younger trees...
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BIOLOGICAL AND BIOTECHNOLOGICAL CONTROL OF INSECT PESTS - CHAPTER 1 pdf
Ngày tải lên :
11/08/2014, 04:20
... efforts Simberloff and Stiling (1996) argue that the few documented cases of nontarget impacts, compared with the number of natural enemy introductions, may be more the result of a lack of monitoring ... arbitrary, selection of enemies is made, and studies of their effect on hosts in the area of origin may not be possible (Waage, 1990) In fact, many studies may be terminated before the best agent is ... relationship between rate of natural enemy establishment and total numbers of natural enemies released Ehler and Hall (1982) reported similar trends looking at success of programs and total numbers of...
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BIOLOGICAL AND BIOTECHNOLOGICAL CONTROL OF INSECT PESTS - CHAPTER 3 doc
Ngày tải lên :
11/08/2014, 04:20
... range of other classes of behaviorally active compounds (below, and Nordlund, 1981; Howse et al., 1998) Semiochemicals can be used to mediate the behavior of the target organism in a wide range of ... the active space, or area of influence of the trap, can be greatly increased by the attraction of insects to semiochemicals Regular inspection of the number of insects caught in such traps provides ... systems can be successful at collecting actively mobile insects, trap efficiency can be increased many times by the use of a specific attractant This occurs because the active space, or area of influence...
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BIOLOGICAL AND BIOTECHNOLOGICAL CONTROL OF INSECT PESTS - CHAPTER 5 ppt
Ngày tải lên :
11/08/2014, 04:20
... speed of kill of the viruses (Gopalakrishnan et al., 1995) Insect neuropeptides also offer potential for development of new insecticides similar to the hormonally based IGRs that have already been ... appears to be vital for wandering to be initiated at the normal time Due to the selectivity of tebufenoxide and RH-2485 for Lepidoptera, the chemicals can be used without the risk of direct deleterious ... phytophagous insects, and stored product pests have been shown to be affected by azadirachtin Insects that are susceptible include aphids, lepidopterans, hemipterans, cockroches, beetles, and...
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BIOLOGICAL AND BIOTECHNOLOGICAL CONTROL OF INSECT PESTS - CHAPTER 6 potx
Ngày tải lên :
11/08/2014, 04:20
... these components can be targeted using genetic control The number of insects can be reduced by increasing the genetic load in a population by a variety of approaches outlined below Genetic load ... area became tsetse free The success of this approach before any significant mass-rearing technology for this group of insects had been developed indicated their susceptibility to any form of applied ... Control of Insect Pests Academic Press, London, 1974, 158pp Davidson, G The Potential Use of Sterile Hybrid Males for the Eradication of Member Species of the Anopheles gambiae Complex Bulletin of...
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BIOLOGICAL AND BIOTECHNOLOGICAL CONTROL OF INSECT PESTS - CHAPTER 7 ppsx
Ngày tải lên :
11/08/2014, 04:20
... tomato have been shown to be detrimental to beneficial insects (Stipanovic, 1983; Treacy et al., 1985) However, moderate levels of plant trichome density in insect- resistant cultivars of cucumber, potato, ... (Bt) have begun to be produced in U S agriculture, and will be introduced into Asian crop production before the end of the century The value of Bt cotton production in the U S state of Mississippi ... describe the reaction of an insect to a plant, while tolerance resistance describes the reaction of a plant to insect infestation and damage 7.2.1 Antibiosis and Antixenosis Antibiosis describes...
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BIOLOGICAL AND BIOTECHNOLOGICAL CONTROL OF INSECT PESTS - CHAPTER 8 pptx
Ngày tải lên :
11/08/2014, 04:20
... specificity of binding can be related to toxicity, as the “receptors” have not been characterised The observation that lectins can be transported across the gut wall and can be detected in the insect ... against insect pests However, a greater understanding of the mechanism of action of proteinase inhibitors in insects, both at the biochemical and molecular levels, will be necessary before the ... Pollination is another factor that must be considered in terms of possible effects of transgene products on beneficial insects Possible effects of a number of transgene products, including Bt toxins,...
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BIOLOGICAL AND BIOTECHNOLOGICAL CONTROL OF INSECT PESTS - CHAPTER 10 pptx
Ngày tải lên :
11/08/2014, 04:20
... and Beneficial Insects Crop plants become an integral part of the environment and can be a food source or home to many beneficial or nontarget insects or wildlife As natural habitats shrink, beneficial ... life cycle of many insects will be allowed to occur Also, a pool of beneficial insects can be maintained in this refugia that may function synergistically with the genetically engineered insect control ... grower not be realized, but the development of insect resistance to the bt-toxin may be accelerated This acceleration being the result of exposure of insects to suboptimal levels of the toxin...
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BIOLOGICAL AND BIOTECHNOLOGICAL CONTROL OF INSECT PESTS - CHAPTER 11 pot
Ngày tải lên :
11/08/2014, 04:20
... pathogenicity of the microbe to the honeybee and to three species of predaceous and parasitic insects Selection of the predator/parasitic species should be representative of groups that will be exposed ... amounts of δ-endotoxins produced The fact that product efficacy, as well as range of insect pests to be controlled, can be altered by adjusting the type of δ-endotoxin has led to the development of ... subspecies have been registered, many others have been described but have not been developed commercially To better understand the process of registering a microbial pesticide that has been genetically...
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![Báo cáo lâm nghiệp: "Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions" ppsx](https://media.store123doc.com/images/document/2014_08/07/medium_eml1407381692.jpg)
Báo cáo lâm nghiệp: "Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions" ppsx
Ngày tải lên :
07/08/2014, 10:21
... A total of 34 species of cambioxylophagous insect fauna, representing merocoenoses of Norway spruce in the Beskids, were recorded from a total of 2,032 trees in the form of standing trees attacked ... bark beetles, followed by 80 stems (2,854 m) of wind-felled trees, 35 stems (1,324 m) were checked in the form of snags and tree fragments (tree parts) A high proportion (37–97%) of annual bark beetle ... frequency of occurrence of I typographus was lower (compared to dominant Table Frequency of occurrence of some cambioxylophagous insects in standing trees related to the social position of a tree...
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Tài liệu ABOVEGROUND CARBON STOCK ESTIMATES OF RUBBER (Hevea brasiliensis) PLANTATION AT MAKILING FOREST RESERVE doc
Ngày tải lên :
21/02/2014, 04:20
... could be because the plantations mentioned were established a couple of years earlier than the rubber plantation, and these plantations (especially the first two) are composed of trees of much ... also added that at this rate of dry matter production, the efficiency of utilization of solar radiation in a stand of Hevea trees with a closed canopy was calculated to be about 2.8% Naimah, Zainol ... 0.04 Rubber plantation plays an important role with regard to carbon contribution to the environment A 27-year old stand of rubber trees in Malaysia had a total amount of carbon stock of about...
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Tài liệu Trade Reforms and Crisis in India’s Plantation Agriculture: Reflections on Tea and Rubber Plantation Sectors pdf
Ngày tải lên :
21/02/2014, 04:20
... Non-provision of bonus; increase in workloads- a hike in the minimum quantity of tea leaves to be collected and increase in tapping task (no of rubber trees to be tapped in rubber) Curtailment of non-wage ... 2003 2004 2005 2006 Share of small growers (upto 10.12 ha) in total no of plantations (%) 98.6 98.6 98.7 98.7 98.7 98.8 98.8 Number of Tea plantations including big plantations ('000 nos) 112.01 ... measures; b) neglect of plantation management activities; c) close down/ lockouts; d) abandoning of plantations, etc For bigger tea planters, majority of whom own plantations of 250-400 ha, labour...
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Tài liệu WORKING CONDITIONS AND HEALTH IMPACTS OF INDUSTRIAL TREE MONOCULTURES pptx
Ngày tải lên :
21/02/2014, 04:20
... some of the most varied biodiversity in the world Today one can still see the enormous stumps of native trees between the rubber trees and even large tree trunks rotting in the middle of the plantation ... timber plantations Since the mid 1980's there has been a global trend towards the outsourcing of labour-intensive aspects of the plantation timber production model In South Africa, the timber ... planted, each tree pruned, each cubic metre of wood cut, each kilo of oil palm fruit picked, each section of rubber tree plantation harvested, etc Workers must achieve an extremely high level of output...
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Tài liệu Báo cáo khoa học: "BIDIRECTIONAL PARSING OF LEXICALIZED TREE ADJOINING GRAMMARS" pdf
Ngày tải lên :
22/02/2014, 10:20
... will be introduced in the following, in order to present some interesting properties of Algorithm I Formal proofs of the statements below can be found in (Satta, 1990) y aj - Figure Let n be a ... the set of all nodes in the left (right) portion of some tree in IuA Note that the three sets Middle-nodes, Left-nodes and Right-nodes constitute a partition of the set of all nodes of trees in ... algorithms are forced to start at each foot node the recognition of all possible subtrees of the elementary trees whose roots can be the locus of an adjunction In this work, we have discussed a theoretical...
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Interest Rate Options - A discussion of how investors can help control interest rate exposure and make the most of the interest rate market pdf
Ngày tải lên :
06/03/2014, 14:20
... therefore, cannot be exercised until expiration For this reason, the options will be priced off the market’s best estimate of the yield of the underlying instruments at expiration of the options; ... forward pricing phenomenon may be apparent only at the short-end of the yield curve The difference between the current spot yield and the forward yield can be significant, even for short-dated options ... European-style exercise (the options cannot be exercised until expiration) The total premium received is the maximum profit that can be made The maximum risk is the difference between the strikes less the...
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The Book of Tea pot
Ngày tải lên :
15/03/2014, 12:20
... ordinary methods of tea- drinking, a historical summary of illustrious tea- drinkers, the famous tea plantations of China, the possible variations of the tea- service and illustrations of the tea- utensils ... eighteenth century became, in fact, tea- houses, the resort of wits like Addison and Steele, who beguiled themselves over their "dish of tea. " The beverage soon became a necessity of life—a taxable ... so much of Taoist doctrines, formulated an elaborate ritual of tea The monks gathered before the image of Bodhi Dharma and 13 drank tea out of a single bowl with the profound formality of a holy...
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Báo cáo khoa học: "Efficient Inference Through Cascades of Weighted Tree Transducers" ppt
Ngày tải lên :
17/03/2014, 00:20
... size of a tree t, size (t) is |pos(t)|, the cardinality of its position set The yield set of a tree is the set of labels of its leaves: for a tree t, yd (t) = {t(v) | v ∈ lv(t)} Let A and B be ... a tree or set of trees as input that can be represented as a weighted regular tree grammar3 (WRTG) and a WTT that can transform that input with some weight We would like to know the k-best trees ... need not be built A graphical representation of all three methods is presented in Figure Application of tree transducers Now let us revisit these strategies in the setting of trees and tree transducers...
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Báo cáo khoa học: "Optimal k-arization of Synchronous Tree-Adjoining Grammar" ppt
Ngày tải lên :
17/03/2014, 02:20
... Example of intertwined links that cannot be binarized No two links can be isolated in both trees in a tree pair Note that in tree pair γ1 , any set of three links may be isolated while in tree pair ... work of Shieber and Schabes (1990) and Shieber (1994) 606 k-arization Algorithm For a synchronous tree pair γ = γL , γR , a fragment of γL (or γR ) is a complete subtree rooted at some node n of ... implementation of the algorithm of section resulting in time complexity O(|G| + |Y | · L3 ), where Y is the set of synG chronous tree pairs of G and LG is the maximum number of links in a synchronous tree...
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