The establishment of a plastic house on a scientific basis with the application of the methods studied and tested by you the opportunity to create a model in the early production and .give you high dividends in terms of quantity
But do not forget your stay at the homes of plastic Ten Commandments following: 1 - 1Provide adequate ventilation openings to the size of the house so as to ensure ease and speed of switch-laden air of excess moisture or processed by fans for ventilation having a power sufficient and it is best where it works in addition to the switch and the organization of air temperature, humidity, and distributed uniformly in the different corners of the greenhouse. - Replace the soil House new reclaimed soil or reclaimed your soil, a process is justified in intensive agriculture-oriented as the heavy soil with poor drainage is not valid for your crops and take the most damage. 3 - Soil fertility greenhouse heat or chemical disinfectant and shall be as follows: Steam sterilization of soil on the degree of 121 m and for / 30 - 60 / min and under pressure. Vapam - Sterilization of soil with chemicals such as Alfabam Vapam or Bromur bromide. - Use of improved seed varieties and adopted for disease resistance and do not forget to sterilize Bdhurk in the event of being non-sterile by the manufacturers, using an innate disinfectants following: Alarzseid, thiram, Alcambergran - a rate of 3-6 m g per kg of seeds. . 5 - use of mineral fertilizers in a balanced manner where the poor soil or fertilization, unbalanced to the emergence of imbalances reduce harmful satisfactory production. - Not deprive the plants and non-flooded irrigation water use of drip irrigation or a cold. 7 - ruled out without delay plants that show symptoms of undesirable (such as wilt, spotted leaves or burning the edges, Alnbarakec) with their roots and surrounding soil and buried it away. 8 - Fight the insects and especially insightful absorbent ones that promote the spread of disease. 9 - Use fungicides as soon as the symptoms of spotted leaves and scarves. 10 - do not hesitate to consult with agricultural technicians in your area in
all Iatrdk Parasitic diseases Parasitic Diseases Parasitic Diseases
: Early blight on tomatoes: Alternaria Solani Caused from fungus Alternaria Solani
Affects most of the family Solanaceae plants, especially tomatoes, peppers, potatoes, ranging from losses resulting from the disease between 5 - 20%. : Symptoms:
. Fungus infects stems and leaves of plants in all stages of growth of the gesture and even plants mature and get fruits and necks of the papers. . Symptoms appear on leaves are small dark brown spots that will quickly be converted to black especially on the lower leaves are old and these spots scattered small at the outset that will quickly grow in size to 2 - 3 mm and nested loops which appear surrounded by yellow followed by drying the lower leaves and fall. On the branches of leaves and petioles Vtkon spots deep and prolonged dark-edged, exposing branches to break the fruits of tomato show symptoms of the disease at all stages of a fruit, in black or brown patches of infection may extend into the fruit in the form of dry rot. The spread of disease and injury:
Lies in the remnants of fungus-infected plants or soil in the seed are residents. . Mushroom spores spread by wind and insects, where symptoms begin to appear after two or three of the infection. . The activity depends on the strength of patients mushroom plant and weather conditions, Plants vulnerable and the old cards are more vulnerable to infection. Appropriate environmental factors:
. Fits mushrooms temperatures ranging from / 24 - 30 m / and high air humidity, which increases the dangers of the disease in the crops covered. Resistance to early blight:
· . Use of the items known to be resistant to the disease. · . The use of heat-sterilized seeds (which are usually carried out by a precise method for seed-producing companies and summarized the treatment of seeds with hot water at 50 ° C for 25 minutes) and to kill the parasite and the internal coefficient seed before planting one of the disinfectants and fungal resistance to the fungus causing the disease in the soil and protect the seeds from other fungi. The materials used for the sterilization of seeds: · Powder Alcabtan (Arzseid 50%) Captan is used by / 4 - 8 / g per kg seeds. · اThiram أو TMTD 75% Thiram Thiram TMTD 75% or a rate of 3 - 5 g per kg seeds · . Alsirizan: It is an organic mercury compound is used at 2 g per 1 kg of seeds. · . Once the appearance of the first symptoms on the plants the amount should be initiated immediately to conduct the spraying process where you can stop progression of the disease and minimize the damage that repeated spraying each / 10-15 / once a day according to the state of infection and the materials used. · . My parents Theocirbemit vehicles: such as Zinnib (Daethein - g 78) and Almanib (m Daethein 22) and Almancuzinnib (Daethein m - 45) is combining the best features and Zinnib Almanib. · . And use these materials by 150 - 250 g / 100 l water - and when working from prepared pulp is added to the water gradually until you obtain a concentrated solution is added to the rest of the amount of water used. · . Copper compounds: such as Bordeaux and the solution used by 0.5% on tomatoes. . OXY CHLORIDE copper by 5% and no trade names Kopoks, Kopravi. · Alcabtan: Features of this article can be used in the flowering and do not lead to any damage to the crop as well as to the effectiveness of high resistance to disease and is used by 200 - 300 g / 100 l water.
Diseases white Zoghbi Mowny Mildews Mowny Mildews
. Cause these illnesses are of a large group of fungi capable of infecting a lot of important agricultural crops, causing them damage, this disease shares features white Zoghbi joint public appearance in terms of infection and appropriate environmental conditions and methods of resistance. : And those features can be summarized in the following points: 1. 1 - symptoms: common to all these diseases, symptoms caused by the plants where they appear as clusters of pale yellow painting on the upper surface of the leaves turn the progress of infection to dark gray or brown, offset by lower growth on the surface of fluffy white or gray color is a bags for pregnant women bacterial fungus that comes from the pores of the paper, and the intensification of injury extends spots and unite with each other for the spread of infection most parts of the paper, this in addition to and become members of the securities market such as other plant tender plants and flowers and fruits. 2 - fungi that cause these diseases, any specialized intrusion, each limited to a specific host of his own and does not have the ability to infect others, so baptize to nominate on behalf of the parent fungus, and these diseases, for example: 1. Bremia Lactucae White Zoghbi in lettuce caused by a fungus, Bremia Lactucae 2. Peronoplasmapara cubensis وهو White Zoghbi in cucurbits Peronoplasmapara cubensis It affects the plants leaves, cucumbers, melons and squash are not affected by the fruit. 3. Peronoplasmopara cubensis Whiteness Zoghbi in scattered Peronoplasmopara cubensis 4. Peronospora Sparsa Zoghbi in white roses Peronospora Sparsa . 3 - appropriate environmental factors: the spread of this fungus fits the atmosphere of high humidity and temperature, medium and which tend to be cold and this increases the risk of these diseases in the crops covered, where the temperature and humidity are ideal for development and deployment. 4 - resistant to diseases whiteness Zoghbi following a prevention program to prevent or reduce the incidence and preventive measures in place: 1. Follow the agricultural operations that allows for easy ventilation between plants (planting distances appropriate) as well as care for ventilation when you open the windows of high humidity and at times warm. 2. . Waste collection plant and out of the houses within the module to be destroyed by burning or burial. 3. . Pursue a program of preventive spray before infection and at appropriate intervals of pesticides used for this purpose vehicles such as copper or Alkopravi Alkoprazan or vehicles such as my parents Theocirbemait Aldaethein pm - 45 or other organic compounds such as Alcabtan (Alarzseid).
Powdery mildew diseases The Powdery Mildews The Powdery Mildews
. Powdery mildew fungi spread a very large number of important crops cash crop of vegetables and ornamental plants in a total drought-tolerant and high temperature more than borne diseases white Zoghbi. : 1 - powdery mildew in Almqraeiat:
Erysiphe Cichoraccarum Caused by a fungus, Erysiphe Cichoraccarum This fungus infects all plants Alqraeip family except watermelon.: Symptoms and injury . Infection usually starts on the old leaves around the base of plants, Maha spread to new leaves, and white spots appear gray minutes on the lower surface of leaves, and the progress of the disease extends to the upper surface of leaves, these spots increase in size so as to bring the entire surface of the patient, followed by drought affected areas and fall. أما الثمار The fruits Vidmr size and decrease the number. Fits this mushroom warm weather and high humidity. . And become infected from the plant to another by wind and insects such as cucumber beetle, and wild plants housing the fungus in the absence of plants Alqraeip a source of infection. Resistance:
Karathane . Resist the disease by spraying or Baltafeer sulfur colloid as soon as symptoms appear distinctive, and in spite that the sulfur economic use because of low price but the sensitivity of many plants Alqraeip his family as well as at high temperature and drought Akarathein Karathane is recommended to use a private boat to powdery mildew disease resistance and has little effect the spiders. . Signed treatment in the event the use of Akarathein two weeks before harvest. Group wilt diseases on vegetables Vegetable with Diseases Vegetable with Diseases
. Causes wilt diseases in plants covered with heavy losses if it means taking the necessary preventive, because these diseases affect plants in all stages of the process of germinating seeds and even whole plant as some of the symptoms may be delayed in appearing thus reducing the production, continuing the efforts and funds on plants infected compounding the losses. These diseases cause many of them are parasitic and non-parasite limit ourselves in this chapter mention wilt disease caused by parasites capable of infection to move from diseased plants to healthy plants, while the non-parasitic diseases We shall speak about in a special chapter. : And these causes can be summarized as follows: . Wilt diseases caused by fungi such as: fungi causing wilt and Fusarium wilt fungi causing Alvrtiselom. 2. Wilt disease caused by bacteria such as the bacterium that causes bacterial wilt pumpkins, tomatoes cancer (appointed spot the bird). 3. Wilt disease caused by worms, especially caecilians worms Almleodugen. 4. Wilt disease caused by factors other than infectious (non-parasitic). . Such as the impact of thirst or inundate the soil or chemicals. A - wilt diseases caused by fungi: - - The fall of seedling disease and root rot -Dampiny- off - Soft wilt disease Dampiny-off . As well as in seed beds that the causal factors operating in conditions of high humidity with poor ventilation in the soil and the lack of lighting and all of the features of intensive agricultural. . Pathogenic fungi and spread in all agricultural areas in the Syrian Arab Republic, affecting a large circle of agricultural crops, particularly vegetable crops in various growth stages and in different circumstances, hence the seriousness of these causes. . The disease affects tomatoes, peppers, broccoli, cabbage, squash, cucumbers, melons, beans and peas, as well as ornamental plants and mind prepared for cultivation. And caused the fall of seedling disease fungi of different races including: 1- Rhizoctonia Solani 1 - Mushroom Alraizoktonya 1 - Rhizoctonia Solani 2- 2- Botritis Spp 2 - mushroom Albotrtis 2 - Botritis Spp 33- Phoma Spp 3 - Mushroom Alfoma 3 - Phoma Spp 4- Pythium Spp 4 - Mushroom Albeciom 4 - Pythium Spp 5- 5- Fuzarium Spp 5 - fungus Fusarium 5 - Fuzarium Spp 6- 6- Alternaria Spp 6 - mushroom Alaltrnaraya 6 - Alternaria Spp 7- 7- Sclerotinia Spp 7 - Mushroom Alsclairotinena 7 - Sclerotinia Spp ا Symptoms:
For several manifestations of this disease: . Attacking fungi causing seed once planted in the soil and germinate before and cause rot may infect seedlings before the emergence of seedling gesture as they fail to emerge above the soil surface and the error due to the weakness in the vitality of seeds. . Seedling injury after appearing above the soil surface and in the neck area adjacent to the soil and causes rot in a short period SOUIKA embryonic tissue and take a dirty white color and fall seedling before showing symptoms of wilt, and plants easily characterized by its separation from the region rotting. 3. . After hardening of the seed tissues become resistant to the disease: only that the roots may still be subject to infection and rotting plants die as a young stay with the list.
Resistance:
· In the seed beds · Use good ventilation and light soil has good drainage. · Moderation in the water for irrigation and scheduling waterings. o Alfabam rate of 100 cm 3 per square meter (aqueous solution concentration of 33%) o Bromur bromide at 100 g / m 2 o Formaldehyde concentration of 1% at 10 L / m 2 . The cultivation takes place after 15 - 20 days of treatment until the end of the smell of the article. · . Sterilized seeds in one of the disinfectants fungal: Alarzseid - thiram - Abannlit Alsrizan rate of 3-6 g of material per kg of seed and seed so as to prevent the potential of fungi in the soil. · . Cover the seed with sand to help to germinate rapidly in and out over the soil surface (escape from injury). · . Wetting the soil in sufficient quantity of water added by one of the articles mentioned in paragraph Seed sterilization rate of 2 g of material / m 2 and the process is repeated several times. · . Spraying seedlings or Balzinnib Almanib rate of 40 - 50 g / cans. In plastic houses and greenhouses gases. · Steam sterilization of soil on the 121 degrees C for 30 - 60 / min. . Chemicals can be used instead of steam to sterilize the soil by using: Bromur Alfabam or bromide or formaldehyde as contained in the sterilization of the soil layers of seeds. · . Care operations and hand hoeing ventilation, drainage and irrigation, and good lighting. · Spraying plants, especially the neck and the surrounding soil by a fungal disinfectants (vehicles Aldaecio Cirbemit or one of the compounds of copper). Fusarium wilt in tomato Fusarium Oxysporium F. Caused from fungus Fusarium Oxysporium F. Lycopersici Lycopersici
. This fungus infects tomato in addition to other plants of the family Solanaceae, such as peppers, eggplant and potatoes. الأعراض: Symptoms:
. Begin the emergence of pallor is going on securities turns yellow and then later bend the necks of papers expressing manifestations of wilt and dry up and die. Symptoms usually begin from the lower leaves gradually extending to the upper leaves (this may become branches of the plant without the other is not showing symptoms of the disease) and end the matter to the whole plant wilt and death. . When you disconnect the main root or leg longitudinally notes dark olive-green or brown in the blood vessel. . If you put the pieces in a warm place for several wet days it grows on the surface thickly white fungal growth is a Miceleom mushrooms. Appropriate conditions for the spread of disease and injury:
. Agree with this disease, the warm atmosphere to warm and temperatures appropriate for the incidence is 27 - 29 m, while soil moisture is adequate humidity, moderate or when the soil contains 50 - 60% of field capacity, so more encountered the disease in the summer cultivation. . Passed on mushrooms with agricultural operations of irrigation water and the remains of infected plants, as well as organic fertilizer. Resistance:
. Sterilized nursery soil as described earlier in this bulletin. · Planting seedlings sound · Cultivation of resistant varieties · Treatment of the roots of seedlings with a solution or Almanib Zinnib · . De-worming caecilians use Fayyordan or Alvaidit or Allanit. Fusarium wilt in Algelajul (Saif Crow) : Fusarium Oxysporium F. Caused by a fungus: Fusarium Oxysporium F. Gladioli Gladioli
. The fungus causing huge losses to the crop plant Algelajul of flowers suitable for picking and commercially attractive where she specialized in some greenhouses in the production of this type of flowers. Symptoms:
. Pallor of the plant followed by yellowing and burning the edges of leaves and plant drought and death before flowering also get Alchormat where showing patches of reddish-brown color round in shape, where hardened tissue under the spot and recite the structures (the appearance of the neck dry) The reign mold Alchormp all tissues. Alchormat that the patient is unsuitable for agriculture except that it rots during storage, as the fungus moves from one season to another by infected Alchormat or through the soil where they can live for a period of more than four years. Resistance:
Cultivation of resistant varieties in areas where the fear of infection · Sterilize the soil before planting steam · Alchormat sterilized before planting · The exclusion of plants infected with a case of once Kromadtha and burned away from the field · When not injured Alchormat Tkulaiaha stored in preparation for the next planting season Wilt Alvertsleom Verticillium albo- atrum Caused by a fungus, Verticillium albo-atrum Verticeillium dahliae Verticeillium dahliae
And mushrooms, the latter is the most dangerous and most widespread. . This disease can hit about 400 different plant species, encompassing a vegetative crops such as tomatoes, peppers, eggplant, cucumbers, melons and squash, also afflicts the Yearbook of herbal plants and perennials, trees and shrubs that are considered stores of natural sources of infection with VAM. Symptoms:
. Similarity of the symptoms of this disease is caused by the wilt fungus Elvirtceleom (wilting, yellowing) It is difficult to distinguish between them only after a laboratory test to extracts of plants infected, this can be found within the vessels Miceleom mushrooms carrier, may be observed on longitudinal sections of a dark color or black dots, which distinguishes this mushroom for others, and the cause of wilting is not due to blockage of blood Bnmuat mushrooms, but to toxic secretions in the vascular tissue. Cancer tomato bacterial (bird eye) Corynebacteruim michiganese Caused by bacteria: Corynebacteruim michiganese
Observed this disease on tomato plants grown in greenhouses area Hannadi Lattakia, and it is causing considerable losses to the crop plants of the fruit has sometimes led to the death of the plant. : Infection and symptoms:
. Infection occurs in all phases of plant growth and affects all parts of the plant. . Distinguishes this disease coupled with drought wilting plants securities may lead to the death of the plant completely. Where the onset of the disease of the lower leaves, wilting and extends the period for almost a month. . As for the stem and branches appears dark blisters or cracks, on the longitudinal section of the leg injury notes on the blood vessel in drops dark. . Move bacteria from the blood vessel to the fruit which leads to distortions in the incidence of early and blackened seeds, and in the incidence of late Vthfez natural form of fruits and seeds are able to germinate but carriers of the bacteria and is working on the transfer of infection. . Notes on the external skin patches regularly circular light-colored stationed in the middle of a black spot where the bird-like eye disease, a label appears. . Is a seed and plant residues infected main sources of infection as the ability of bacteria causing the infection through cuts and scratches during agricultural operations such as Altstill and hand hoeing as well as the activity of insects with piercing sucking spray irrigation water. Resistance:
1 - Use of resistant varieties
2 - Use sterile seed or sterilization Paljratuszan 3 - 4 g / 1 kg
seeds 3 - Caring for agricultural operations during the Altstill and hand hoeing 4 - insect resistance 5 - the exclusion of infected plants from the White PVC Bacterial wilt in cucurbits Erwinia Tracheiphila Caused by bacteria Erwinia Tracheiphila
. These bacteria infect plants Alqraeip family and in particular cucumber and watermelon is one of important crops produced in greenhouses. : Symptoms: . Ttahedl edges of the sheets in the hot weather and the progress of the disease become a color dark green leaves and showing patches of pale, dirty spread on the surfaces of leaves followed by sudden wilting of leaves followed by wilting and dry leg. . When you disconnect the leg accidentally come out of the vascular bundles gelatinous viscous liquid containing the bacteria. The symptoms are confused with the symptoms of wilt and mildew and must here make the process of removing the causative agent in the laboratory to be ascertained and a plan of resistance appropriate. Acalymma vittata . Transmitted bacterium that causes wilt disease cucurbits by an insect beetle option planned Acalymma vittata, which feed on leaves, which are carried to the blood Almikrot wood breeding special detachment toxins leads to cell death and the formation of fluid materials which leads to wilting and plant death. Appropriate environmental factors:
. Suited to the disease of low temperatures and stops activity about microbes that cause the temperature of 33 m and can thus to some extent resistance within the glass greenhouses are equipped with automatic temperature control. Resistance:
. Piercing sucking insect resistance carrying bacteria, especially beetle option which plays the role of the portfolio of natural distress, in the early stages of growth. Diseases caused by worms caecilians (nematodes)
. Caecilians worms include a large number of species that follow the animal kingdom and know now more than 500 species of which parasitize most of the plants causing economic damage them, and particularly in hot climates, temperate and falls within the Department of Tteflha all vegetable crops and ornamental plants cultivated in places covered with plastic or glass. . Caecilians worms that infect plants with small objects ranging in length from 0.5-5.0 mm cylindrical twisted hence called caecilians worms which had no color. And have specialized organs of the movement, nutrition and digestion, output and reproduction. . Characterized by the races Females more size and more intrusive than the males. . Caecilians worms are found mainly in the soil where they attack the roots of plants, but some of them intrudes on the shoot. . They lay their eggs in soil or plant tissue where the eggs hatch and out of the larvae to pass several stages, each followed by shedding of the worms do not become capable of reproduction, but after the last shedding. Symptoms of infestation caecilians:
. Give the worms that parasitize the root of plants symptoms of weakness and yellowing and stunting of plants infected with the symptoms of malnutrition, but these symptoms may be confused, we work with many other factors of plant pathogens to cause similar symptoms, but this Feltchkis such cases must be detected on the root showing where certain types of worms caecilians obvious symptoms such as a distinctive complexity of the roots but in most cases need to be careful microscopic examination to identify the real causes. The role of caecilians worms in the preface and the transfer of other pathogens:
to penetrate skin tissue protective plant by worms caecilians eligible pave the way to the large number of objects parasitic and depends on the extent of scratching and vandalism that occurred in the tissues in the nematode entry and, in some cases, the damage caused by the parasites enter the secondary most of the damage caused by the worms do not even have the same activity of the worms is to continue its activities. . This caecilians worms play a major role in the spread of some diseases, fungal and bacterial wilt diseases, especially Fayyozariomi. Roots Alnimatody disease complexity Root Knot Root Knot : Meloidogyne Spp Causing worms Almileodugen: Meloidogyne Spp
These worms range widely Awaili which there are no types of specialization and clear where it occurs in the roots of a large number of plants up to about 2000 type of cucumbers and tomatoes and increasing severity of the disease in the land of light and sandy and the proportionality of temperatures between 16 - 30 Days. Symptoms:
. Plants are dwarfed and become pale green in color and showing symptoms of malnutrition and wilt, especially in hot weather, but root appears to hold varying sizes vary depending on the type of plant conditions and frequent forest root near the site of the injury and severe infection leads to the death of plants. Caecilians worms resistant to plant pathogens in greenhouses - - Cultivation of resistant varieties - - Thermal treatment: use thermal treatment to resist nematode infection in the soil of greenhouses, glass and seed beds. And treatment and to vary the temperature used and the time exposed soil to be resistance to the worms and the circumstances of the transaction, and can rely on the sterilization program for the annual White plastic soil using steam-ROM so that heat up to / 121 / degree C for / 30 - 60 / min. Chemical resistance: Vydate G . There are many chemicals used successfully at the present time to resist worms caecilians, and most of these chemicals fast volatility spread between the pores of the soil as gases and most important of these articles: chloropicrin H-Methyl Bromide, Alfabam - Fayyordan granulator, granulator Alvaidit Vydate G - Alnimajon. - - Chloropicrin: used in the form of liquid rate of 6 kg / m 2, where 100 is injected at a depth of 10 - 15 / cm and the soil surface is sprayed with water and then covered in cloth gas-tight for two days.. Should not be grown chloropicrin soil treatment by at least 14 days of treatment where there is no trace of the smell of the article. - . - Methyl Bromide: This pesticide is characterized by its ability to high percolation and successfully used in plants covered, where he goes to cover the soil impermeable covers for the gas and injected into the bottom of the cover 9 kg of compressed gas per 100 m 2, the soil remains covered for a period of / 24 - 48 / hour and then well-ventilated for 8 days before planting. - - Alfabam: liquid added to the water and spray the soil at 10 for each 100 m 2 and agriculture as after three weeks of treatment, at least. - : /4- 6/ كغ لكل 100 م2. - Granular Allanit: / 4 - 6 / kg per 100 m 2. Non-parasitic diseases Non- Parasitic Diseases Non-Parasitic Diseases
. Also known as physiological diseases are diseases of any nature is not contagious it is not transmitted from diseased plants to the sound, and arise from imbalances in the vital functions of the plant due to the impact of inappropriate environmental conditions in the soil or air (light, heat, moisture, mineral elements .. .) or to the effects of mechanical effects. . These diseases constitute a serious danger to the vegetable crops and ornamental plants cultivated in greenhouses and lead to an obvious lack of production, and excel in many cases the causes of other diseases caused by damage, and perhaps the most serious where it set the stage for injury parasitic disease by weakening the resistance plant. الأمراض. There is no doubt that the proliferation of sophisticated equipment that keeps the temperature and humidity within the limits required automatically has reduced the possibility of exposure to such diseases. ... In fact, the issue of physiological disease would require a lot of studies and experiments and observation process, especially with regard to the formation of flowers and pollen grains, vaccines and the contract in conjunction with temperature, humidity and lighting . The one hand and the nature of the cultivars on the other. 1 - Smtp fruits of tomatoes: . This shows the disease in the greenhouses of plantations during the late spring in our country where they appear with periods of clear skies and bright sun The situation is aggravated if the method used in the irrigation sprinkler irrigation method, the first thing affected by the terminal vegetative tissue becomes slightly yellowish color weaving fabric for natural is green, and occupies the area affected areas irregular in size and shape and give the appearance Asamtp very quickly. . This is difficult to distinguish between the impact of high temperature and the impact of waves, especially since the periods of high temperature be on a clear day when the sun shines. 2. High temperatures lead to the killing of tissue and the formation of localized burns, and the potential to disrupt growth and the failure of flowers and falling leaves early. : 3 - Effect of low-light: Are growing plants in greenhouses and glass greenhouses to the lack of lighting, which slows down the process of building chlorophyll Viaatari plant yellowing and pale This leads to a decrease in the volume of papers and an elongation in the necks of securities, the market and an abnormal elongation of phalanges, and lack of lighting leads to a lack or absence of flowering blossoms fully . 4 - The impact of soil moisture and drought: . Water disturbances caused by falling leaves and the lack of flowers and fruits or not to hold the fall, where she works to increase soil moisture in the plastic house to prevent the ventilation and the absence of oxygen required for activity of roots and suffocation and death and is accompanied by the appearance of yellowing symptoms on plants and the emergence of symptoms because of the lack of elements to take advantage of fertilizer added to crashes Activity Aljazirat noodles. There is no doubt that the strength of the soil is an important factor in providing the appropriate conditions of humidity, preferably in many cases, replace the plastic house soil soil reclaimed with the strength of light. . On the contrary, infected plants are often planted in light sandy soil or in cases of regular irrigation or inadequate temporary wilt symptoms that appear on the plants, especially when there is intense heat. الري Vtaatlv papers and bends and bows in developing country Parties, this can be for plants to restore normalcy as soon as availability of irrigation water. : 5 - The impact of high air humidity: . As a result of the space is characterized by the crops covered, as well as the use of spray irrigation method airspace be vulnerable to a rise in relative humidity of the air surrounding plants, thus creating favorable conditions for diseases caused by different parasites and makes it harder to resist. Therefore, care must be taken while designing ventilation systems for greenhouses through the processing machines and ventilation air openings to alter the size appropriate for the House, and it shall be altered moisture-laden air in the warm-up times are not exposed to the loss of heat and cold exposure plants. ..) 6 - the misuse of chemicals (pesticides, herbicides and fungal growth and doping ..) . The misuse of chemicals such as herbicides, growth stimulants, pesticides, fungal and bacterial ratios and use contrary to the established percentages to the burning of leaves and Tbakaha or color fading or damage to fall, and sometimes for distortions in the leaves and branches. كما يؤدي . Also lead to the fall of the flowers or failure of the contract or distort the fruit. 7 - Lack of nutrients: . Given the nature of intensive agriculture and stressful soil within plastic houses are often observed on plants developing symptoms of the lack of elements that consume quickly, which requires compensation, to not Vstsab crop disorders and functional elements of an initial lack of symptoms, and is worth to note here that the increase in some elements in the soil, drawn, sometimes negative effects the effects of lack of it. : Nitrogen: nitrogen enters the Protoplasm in the installation of a plant cell so it is essential for the growth and development of members of different plant (market and leaves, seeds) and plant needs in large quantities and deficiency symptoms appear on older leaves first, since moving to the ease of developing the summits of the plant, and symptoms of deficiency: -. - Slow growth peaks countries and roots. . - Palace of branches, where growth-oriented and vertical spin and the lack of branches in general. - - The small size of the papers and color fading or yellowing and then turned to the color yellow - Loss of the early papers Lower - Lack of flowers and small fruit size and firmness
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