نتایج جستجو برای: estimation of forage production

تعداد نتایج: 21245899  

2003
John Andrae

Crabgrass overview Crabgrass was introduced to the United States in 1849 for use as a forage species. The majority of its forage production in Georgia occurs between mid June and early September. Crabgrass can produce relatively large amounts of high quality forage, but is an annual and must produce seed to persist. Pure stands of crabgrass have reportedly produced three to five tons of forage ...

Journal: :international journal of industrial engineering and productional research- 0
fateme zare baghabad yazd uni hassan khademi zare yazd uni

in this paper an efficient three- stage algorithm is developed for software production cost and time estimation. first stage includes a hybrid model composed of cocomo and function points methods to increase estimation accuracy. second stage encompasses paired comparisons matrix of analytical hierarchy process to determine amount of any resources consumed in each step of software production by ...

ژورنال: علوم آب و خاک 2002
سید عطاءالله سیادت, , مانی مجدم, , قدرت ‌الله فتحی, , قربان نورمحمدی, ,

Effects of different levels of nitrogen fertilizer and cutting time of forage on grain and forage yield of barley (Hordeum vulgare L.) Karoon cultivar was studied during 1995-1996 at Ramin Agricultural Research and Educational Center, University of Shahid Chamran, Ahwas, by using a split plot design in randomized complete block with 4 replications. Main plots were assigned to five levels of N...

Journal: :Applied biochemistry and biotechnology 2009
D Y Corredor J M Salazar K L Hohn S Bean B Bean D Wang

Sorghum is a tropical grass grown primarily in semiarid and drier parts of the world, especially areas too dry for corn. Sorghum production also leaves about 58 million tons of by-products composed mainly of cellulose, hemicellulose, and lignin. The low lignin content of some forage sorghums such as brown midrib makes them more digestible for ethanol production. Successful use of biomass for bi...

2009
Carlos M. Di Bella Ignacio J. Negri Gabriela Posse Florencia R. Jaimes Esteban G. Jobbágy Martin F. Garbulsky Victor A. Deregibus

Information about forage productivity and its interactions with cultural practices or climatic variation is necessary to plan livestock management and to increase production without damaging the environment. Remote sensing provides a valuable data source to achieve these goals. Here we characterize forage production over a large region (92 million hectares) by analyzing spatial, seasonal, and i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده کشاورزی 1387

چکیده ندارد.

Journal: Desert 2014

In order to estimate the relationship between forage quality and preference value of plant species for Raini goats(Capra aegagrus hircus), a field study was carried out on Raini goats’ grazing behavior in some desert habitats.Crude protein (as the most important factor affecting forage quality) of all plant species was measured at twophenological stages (spring and summer, 2010) in the dry rang...

Journal: :علوم گیاهان زراعی ایران 0
محمد مهدی مجیدی

sainfoin (onobrychis sativa), a forage legume, is worth attention because of its production and superior quality among pasture and hay forage crops in iran. sainfoin forage yield may be reduced by different levels of salinity. increasing forage yield in saline environments through plant breeding could partially compensate for this shortcoming if sufficient genetic diversity and heritability be ...

Journal: :Journal of dairy science 2003
G L Newton J K Bernard R K Hubbard J R Allison R R Lowrance G J Gascho R N Gates G Vellidis

Concentrated sources of dairy manure represent significant water pollution potential. The southern United States may be more vulnerable to water quality problems than some other regions because of climate, typical farm size, and cropping practices. Dairy manure can be an effective source of plant nutrients and large quantities of nutrients can be recycled through forage production, especially w...

Journal: :Journal of Dairy Science 1981

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