نتایج جستجو برای: distance from agriculture
تعداد نتایج: 5743838 فیلتر نتایج به سال:
The continuous growth of the world population has imposed major challenges on agriculture. Consequently, farmers generalized overuse synthetic fertilizers and pesticides to meet global food demand. Although these products have helped many developing countries increase their crop yield, they simultaneously resulted in issues, mainly decline soil fertility degradation local ecosystems due soil, w...
The Farming/Language Dispersal Hypothesis posits that prehistoric population expansions, precipitated by the innovation or early adoption of agriculture, played an important role in the uneven distribution of language families recorded across the world. In this case, the most widely spread language families today came to be distributed at the expense of those that have more restricted distribut...
In order to study the genetic diversity among 49 genotypes of canola (Brassica napus L) a 7×7 Lattice square design on the basis of randomized complete block design (RCBD) with 3 replications was performed in Agriculture Research Station of Gorgan (Araghymohaleh) province during 2005-2006. Analysis of variance showed significant difference (at 1% level) in all studied traits. HYOLA 401, HYOLA...
In land use planning, mapping the present land use / land cover situation is a necessary tool for determining the current condition and for identifying land use trends. In this study, in order to provide a land use/ land cover map for Ilam watershed, the IRS-1C image data from 25th April 2006 were used. Initial qualitative evaluation on data showed no significant radiometric error. Ortho-rectif...
The unavoidable consequences of increased demand and decreasing water resources and Deduction rainfall and drought is caused to arise disutes among water user in recent years. On the other hand, vital need of agriculture sector to water and developing industry sector in Isfahan, have increased competition between water users of industry sector and agriculture sector. In this paper, we use...
let $g$ be a connected graph with vertex set $v(g)$. the degree resistance distance of $g$ is defined as $d_r(g) = sum_{{u,v} subseteq v(g)} [d(u)+d(v)] r(u,v)$, where $d(u)$ is the degree of vertex $u$, and $r(u,v)$ denotes the resistance distance between $u$ and $v$. in this paper, we characterize $n$-vertex unicyclic graphs having minimum and second minimum degree resista...
landslides and slope instabilities are major hazards for human activities often causing economiclosses and property damages. sikan river basin (ilam province) due to the topography, tectonic,lithology, and climate has enough potential for occurrence of this phenomenon. the objectives of thisstudy were to determine effective parameters controlling the landslide occurrence and to preparezonation ...
Agriculture is described as the backbone of Indian economy, mainly because of three reasons. One, agriculture constitutes largest share of country's national income though the share has declined from 55 percent in early 1950s to about 25 percent by the turn of the Century. Two, more than half of India’s workforce is employed in its agriculture sector. Three, growth of other sectors and overall ...
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