نتایج جستجو برای: pastures and rain
تعداد نتایج: 16830745 فیلتر نتایج به سال:
In the Neotropics the predominant pathway to intensify productivity is generally thought to be to convert grasslands to sown pastures, mostly in monoculture. This article examines how above-ground net primary productivity (ANPP) in semi-natural grasslands and sown pastures in Central America respond to rainfall by: (i) assessing the relationships between ANPP and accumulated rainfall and indice...
Understanding the climate of a region as a first step and most immediate action is considered research for development projects Climatic phenomena such as floods every year irreparable damage to the soil, pastures, forests, urban and rural facilities, human and animal import Climatic phenomena such as floods every year irreparable damage to the soil, pastures, forests, urban and rural facilitie...
In recent years, prices for N fertilizer have increased dramatically, reducing net returns of fertilized pasture systems. A 5-yr study from 2005 to 2009 was conducted to evaluate management strategies and relative differences in profitability for 3 methods of backgrounding calves on smooth bromegrass pastures. Forty-five steers were used each year for a total of 225 animals in a randomized comp...
Nowadays, acid rain serves as one of the most serious environmental problems has affected many regions in the world. This phenomenon is characterized by many environmental impacts, such as soil contamination and degradation. Acid rain immediately affects soil, causing soil particles to breakdown and be dispersed; this is the first step to initiate the soil erosion. Therefore, in this study, the...
In order to study tolerance of durum wheat (Triticum durum) lines to drought stress and also evaluating stress tolerance indices, an experiment based on randomized complete block design with four replications was conducted under two rain fed and supplementary irrigation conditions at Gachsaran station during 2011-2012 cropping season using 20 durum wheat lines. Results of combined analysis of v...
Pastures are an underutilized and under-managed resource on many beef operations. Is it worthwhile to place more management emphasis on pastures? One might think that given the long winters we face in northwest Minnesota, we have to rely so heavily on conserved forages anyway that better management of pastures during the relatively short window they are useable may not be worth the effort. Howe...
The copper level in the serum of 1280 and liver of 200 goats raised in the mountain areas of Khuzestanprovince, Iran were determined. Copper, molybdenum and iron content of soil and pastures as well as sulfurcontent of the pastures were seasonally estimated. Mean serum copper levels of goats in Behbahan,Ramhormoz, Eizeh and Masjed-Soleyman districts were 8.14 ± 0.21, 1.98 ± 0.12, 7.74 ± 0.11 an...
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