نتایج جستجو برای: causing substantial economically declining in perennial crops
تعداد نتایج: 16996672 فیلتر نتایج به سال:
in civil engineering concrete is a material combined of hydraulic cement, sand, gravel and water. gravel and sand compose 60 to 70 percent of concrete. these aggregates support compression force of concrete. cement paste acts as glue to stick grain together. in bushehr factories producing aggregates do not operate according to astm standards, so that fineness modulus (fm) of the produced sands ...
Agriculture is being challenged to provide food, and increasingly fuel, for an expanding global population. Producing bioenergy crops on marginal lands--farmland suboptimal for food crops--could help meet energy goals while minimizing competition with food production. However, the ecological costs and benefits of growing bioenergy feedstocks--primarily annual grain crops--on marginal lands have...
The fastidious phytopathogenic bacterium, Xylella fastidiosa, poses a substantial threat to many economically important crops, causing devastating diseases including Pierce's Disease of grapevine. Grapevines (Vitis vinifera L.) planted in an area under Pierce's Disease pressure often display differences in disease severity and symptom expression, with apparently healthy vines growing alongside ...
The purpose of this paper is to investigate the Solow-Swan's proposition that poorer countries grow faster than richer causing declining income disparities across countries. role coffee trade in convergence also analyzed enrich our understanding whether traditional cash export crops, like coffee, contribute significantly convergence. We found that, GDP per capita was growing among producers re-...
Abstract The current study aimed to screen glyphosate-alternative weed control methods in three perennial crops Greece. Field trials were conducted and repeated (2018 2019 2020) a citrus orchard ( Citrus clementina Hort. ex Tan), an olive grove Olea europaea L.), vineyard Vitis vinifera L.) under the randomized complete block design (nine treatments, four blocks). Glyphosate was applied (720 g ...
Plant parasitic nematodes (PPNs) are obligate biotrophic parasites causing serious damage and reduction in crop yields. Several economically important genera parasitize various crop plants. The root-knot, root lesion, and cyst nematodes are the three most economically damaging genera of PPNs on crops within the family Heteroderidae. It is very important to devise various management strategies a...
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