Preview

Spider Mites and Strawberries

Powerful Essays
Open Document
Open Document
1593 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Spider Mites and Strawberries
TETRANCHUS URTICAE AND THE GREENHOUSE STRAWBERRY PLANT

Mites belong to the Chelicerata, a branch of arthropods and the second largest group of terrestrial animals. Within the order Acari, spider mites belong to the Acariformes with fossils dating from the Lower Devonian period 410 million years ago (Edgecombe, G. D., 2010). The two-spotted spider mite, Tetranychus urticae, is a web-spinning mite. The name refers to their ability to produce silk-like webbing used to create a colonial micro-habitat, protect against predators, communicate via pheromones, and provide a vehicle for dispersal.
Tetranychus urticae represents one of the most polyphagous arthropod herbivores, feeding on more than 1,100 plant species belonging to more than 140 different plant families including species known to produce toxic compounds. It is a major pest in greenhouse production and field crops, destroying annual and perennial crops such as tomatoes, peppers, cucumbers, strawberries, maize, soy, apples, grapes and citrus. This report will concentrate on the greenhouse strawberry host plant.
My management program is based on a 12 foot by 18 foot greenhouse with screened vents, air conditioning, dehumidifier, and two octagonal coliseums with four tiers each holding at least 16 plants, for a minimum 128 plants total. A successful harvest should be 90-100 pints of berries per season.
Strawberry cultivars vary in susceptibility to two-spotted spider mite. Short-day cultivars are generally more tolerant of mite feeding than day-neutral cultivars, particularly later in the fruit-production cycle. Vernalization directly promotes plant vigor. Supplemental cold storage can promote a plant's vernalization. This can be accomplished in the controlled environment of a greenhouse. Plants with low amounts of chilling will have low vigor and will often develop intolerable mite infestations. Starting field berries as well as greenhouse berries in the greenhouse maximizes

You May Also Find These Documents Helpful

  • Good Essays

    On average, 18000 barrels arrive over the 12hr span that the business is open. This means approximately 1500 barrels of berries are input into the process per hour (18000barrels/12hrs). The capacity of the Kiwanee dumpers was given as 3000 b/hr., and I was able to calculate the implied utilization by dividing the berry input rate by the capacity(1500bbl/hr divided by 3000bbl/hr). To calculate the actual utilization of the dumpers, you must first determine the flow rate of the system. Only 25% of the berries are dry and 75% are wet. This sums to 375 dry berries per hour (1500 input/hr x.25) and 1125 wet berries per hour (1500 input x .75). The dry berries have 16 bins that hold 250 barrels a piece, adding up to a total of 4000 berries that can be stored. The wet berries have 8 bins that hold 250 barrels and 3 bins that hold 400 barrels, adding up to 3200 barrels total for storage. The capacity of the DeStoners was given as 1500bbl/hr. The implied utilization would be the input rate (1500bbl/hr) divided by the capacity (1500 bbl/hr). Since the bottleneck does…

    • 1003 Words
    • 5 Pages
    Good Essays
  • Good Essays

    It is important to know that most insects are beneficial rather than destructive. Some insects play an essential role as pollinators of flowering plants just like the bees and butterflies. Some of the products derived from insects are honey, beeswax and silk. Despite of this fact, we cannot simply ignore it knowing that the number of beneficial insects is greater than the number of destructive insects. An action is needed in order to prevent the growing population of insects. It seems that there is an insect for every plant and therefore every crop, and often every part of the plant. Insects are mostly controlled by means of chemical methods which are mostly preferred by farmers. We cannot get rid of insects, but we can control them in our own ways. Different kinds of insects are associated with the different kinds of trees and plants because insects make up the biggest class of the world’s animals. They are important in a way because they play a vital role in maintaining the balance of our ecosystem.…

    • 1717 Words
    • 7 Pages
    Good Essays
  • Satisfactory Essays

    Dust Mites

    • 180 Words
    • 1 Page

    There are two major species of dust mites, which are Dermatophagoides Pteronyssinus from Europe and Dermatophagoides Farina from Americas. Why dust mites had been regarded as one kind of indoor air pollutants? The point is that dust mites need a humid and warm environment to survive, and mankind’s home is just the perfect place for dust mites to survive and grow. Besides the environment, the sufficient food for dust mites is also the reason why there are a huge amount of dust mites in indoor places. Human’s activities, including dander from dead skin, and natural material furniture are both great and endless resources for dust mites.…

    • 180 Words
    • 1 Page
    Satisfactory Essays
  • Good Essays

    Research Paper On Chameleons

    • 4092 Words
    • 17 Pages

    A new species of spider called Trogloraptor marchingtoni has been discovered living in caves in southwestern Oregon. Being the only species in the Trogloraptoridae family, Trogloraptor is unusual and unique in a couple of ways, most noticeably because it has a claw on the end of each leg. Researchers also discovered the spider has a very primitive respiratory system.…

    • 4092 Words
    • 17 Pages
    Good Essays
  • Good Essays

    Pesticides and parasites are major interacting threats to populations (Goulson et al. 2015). There is an increasing diversity of parasites in bumblebees, and infections may have a role in the declines of wild bee populations (Colla et al. 2006; Goulson et al. 2008). The extent to which pesticides can influence the prevalence of harmful gut parasites in bumblebees is little understood. It is important to know how pesticides effect the gut parasites in pollinators as the parasites can have a direct negative affect on colony mortality. The three most common gut parasites found in bumblebees are, Apicystis bombi which is a Neogregarine, Crithidia bombi which is a Trypanosome, and Nosema sp which are microsporidian…

    • 943 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Are one of the commonest garden pests, they are many different species including greenfly and blackfly. Some species are particular to one plant but others will attack a range of plants. Some are winged and travel significant distances on the wind. They feed on the sap of plants by inserting stylets into the plant tissue and sucking some viruses.…

    • 170 Words
    • 1 Page
    Good Essays
  • Good Essays

    Spider Silks

    • 1153 Words
    • 5 Pages

    The main thing that distinguishes spiders from the rest of the animal kingdom is their ability to spin silk, an extremely strong fibre. A few insects produce similar material (silkworms, for example), but nothing comes close to the spinning capabilities of spiders. Most species build their entire lives around this unique ability.…

    • 1153 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Calliptamus italicus

    • 382 Words
    • 2 Pages

    Calliptamus italicus is a species of 'short-horned grasshopper' belonging to the family Acrididae. subfamily Calliptaminae.…

    • 382 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Freemark Abby

    • 300 Words
    • 2 Pages

    2.85 * 12000 = $34,200 Harvest 25 % sugar Decision No Storm Wait 2 * (12000*1.075)= $25,800 No mold Storm 1 * (12000*1.075)= $12,900 8 * (12000*0.70)= $67,200 20 % sugar 3.00* 12000 = $36,000 2.50* 12000 = $30,000 3.50 * 12000 = $42,000…

    • 300 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Bolas Spider

    • 489 Words
    • 2 Pages

    The egg cases of this spider are round balls hanging on silk straps. When discovered, in November 2005 on a kiosk at the Peter and Mary Muth Interpretive Center at Upper Newport Bay, Newport Beach, California, this female had already made eight egg cases and hung them on a web. Two weeks later, another egg case had appeared! © Peter J. Bryant…

    • 489 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    The Trichoptera

    • 3747 Words
    • 15 Pages

    Introduction: The Trichoptera, or caddisflies, are an ecologically diverse order of insects. The adults resemble small moths and are terrestrial, while their larvae are aquatic and spin silk (Bongard 2004). It is due to their diverse designs in the secretion of silk threads that they are able to expand their ecological niches. The silk threads of the larvae are used to create shelters, nets, and cases- adopting an evolutionary system to exploit a wide range of resources (Vaughn 1985). There are about 10,000 species distributed world-wide, excluding Antarctica; displaying the varieties of niches that this order can occupy (Bongard 2004).…

    • 3747 Words
    • 15 Pages
    Powerful Essays
  • Good Essays

    Biodiversity Notes

    • 574 Words
    • 4 Pages

    Anterior/posterior regions, lack antennae but eyes and 6 pairs of appendages, chelicerae – appendages – near mouth, no metamorphosis…

    • 574 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Vineweevil: This is an insect that attacks a wide range of plants, both indoors and outdoors, but can be especially damaging to container plants. He needs to be controlled otherwise he will kill the plant. Adult weevils eat plant leaves during spring and summer, its the grubs in autumn winter attack the roots of the plants, plants growing in containers are most at risk.…

    • 1377 Words
    • 6 Pages
    Good Essays
  • Satisfactory Essays

    Vine Mealybug Case Study

    • 1113 Words
    • 5 Pages

    According to our results, the vine mealybug P. ficus can be consider a threat to the cultivation of ornamental plants in city centres, parks, gardens, road plantations and other areas. If the ecological conditions are suitable, the mealybug population will increase rapidly in a short time and cause significant damage to ornamental plants. Also, due to the fact that P. ficus has a broad host range, including field crops, vegetables, fruit trees, ornamental plants and weeds, the mealybug has the potential to become an important pest species in any crop…

    • 1113 Words
    • 5 Pages
    Satisfactory Essays
  • Better Essays

    Biological Control

    • 2089 Words
    • 9 Pages

    Trichogramma is another natural enemy. It is an egg which parasitizes many pests commonly lepidopterous by killing them before they do the harm to the crop. It is augmented or release in the field. Agumentation can be carried out by inundative releases or inoculative releases.…

    • 2089 Words
    • 9 Pages
    Better Essays