نتایج جستجو برای: windbreaks
تعداد نتایج: 156 فیلتر نتایج به سال:
wildlife management. Based on this information we plan to improve assistance criteria, educational materials, and programs relative to urban audiences. Site Description Across the Midwest, metropolitan areas are growing and converting rural and seminative lands to manicured landscapes. Simultaneously, previously established locations within the urban areas are maturing. Parks and residential ar...
Wind is one of the important natural phenomena in arid and semi-arid ecosystems of the world. Although several studies have been conducted using the wind speed and direction to provide wind rose in each area, only a few of them investigated the possibility of wind speed at different return periods. Analysis of the maximum wind speed at different return periods, in a variety of projects such as ...
The carpet "Bahram Gour and Haft Gonbad " in the Carpet Museum of Iran is one of the pictorial carpets of the Qajar period, which tells one of the stories of "haft peikar (Seven Figures)" by Nezami Ganjavi, about Bahramchr('39')s marriage to the princes of seven climates. This carpet has been studied from different angles, but the connection between this carpet and Qajar architecture has not be...
The use of toxic protein bait sprays to suppress melon fly, Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae), populations typically involves application to vegetation bordering agricultural host areas where the adults seek shelter ("roost"). Although bait spray applications for suppression of oriental fruit fly, Bactrocera dorsalis (Hendel), populations have traditionally been applied ...
There are many reasons to preserve the biological diversity of the earth, and perhaps the most compelling is the insurance that it provides for the uncertain times ahead. The responsibility for maintaining this biodiversity falls particularly heavily on the custodians of the tropical forests, where species richness is highest. How can these forests provide for the immediate needs of local inhab...
Introduction: Wind erosion results from desertification in arid and semi-arid regions and is intensified by any decrease in rainfall and vegetation. Sistan region, located in southeastern Iran, has been exposed to severe wind erosion and dust storms for about 23 years as a result of frequent and prolonged drought in the region and desiccation of Hamoun lakes. Therefore, finding appropriate meth...
Field experiments were conducted over 4 years to evaluate the effects of antitranspirant (Folicote,Aquatrollnc., Paulsboro, N.J.) and polyacrylamide gel (SuperSorb, Aquatrollnc., Paulsboro, N.J.) on early growth oftransplanted muskmelon grown either protected by tree windbreaks or exposed to seasonal winds. A randomized complete block design (RCBD) with split plot arrangement was used with wind...
Perennial woody crops have the potential to contribute significantly to the production of bio-fuels while simultaneously helping to provide a wide range of conservation benefits. Among these benefits are increased biological diversity in the landscape, conservation of soil and water resources, maintenance of forest ecosystem productivity and health, contribution to the global carbon cycle, and ...
Common weed species can harbor Xylella fastidiosa (Xf) and its insect vectors. Should weed control be part of a Pierce’s disease control program? To address this question, we will survey weed species in agricultural areas known to host Xf, and determine the level of insect vector activity and the proportion of potential vectors that carry Xf. In the laboratory, we will compare three techniques ...
Citrus canker (caused by Xanthomonas citri subsp. citri (ex Hasse) Gabriel et al.) is a disease that affects several citrus species and causes erumpent, necrotic lesions on leaves, shoots, branches, and fruit. Yield loss due to fruit and leaf drop can be substantial, and on fruit the unsightly blemishes leads to reduced marketability (14,15,34). The disease is widespread in citrus growing regio...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید