Methane emission f rom l ivestock and agricultural wastes contribute globally more than 3 0 % to the anthropogenic atmospheric methane source. Estimates of this number have been derived f rom respiration chamber experiments. W e determined methane emission rates f rom a tracer experiment in a modern cow shed hosting 43 dairy cows in their accustomed environment. During a 24-hour period the conc...

Vermicomposting is a suitable technology for processing different wastes, to produce a valuable end product (vermicompost). However, the pathogenic load of the waste must be greatly reduced in order to prevent risks to human health. Although Eisenia andrei may reduce the levels of several pathogens, the feasibility of vermicomposting, with regard to pathogen reduction, has not been tested on an...

Alfalfa hay utilization by dairy cattle has expanded in western dairy states. Alfalfa silage utilization has increased in the Midwest. Alfalfa haylage contains high levels of nonprotein nitrogen (NPN) due to protein breakdown during fermentation. Excessive levels of NPN in alfalfa silage diets require supplementation of protected protein sources to meet protein demands of high-producing cattle....

this experiment was carried out in experimental farm of agricultural faculty of ferdowsi university of mashhad, iran during 2010. the design was split plot with three replications. main plots were the medicinal plant species consist of: blond psyllium (plantago ovate forssk.), clasping peperweed (lepidium perfoilatum l.), qodumeh shirazi (alyssum homolocarpum l.) dragon's head (lalementia iberi...

in order to study the effect of organic fertilizer on shoot yield and essential oil content of lavender, this experiment was conducted in the research institute of forest and rangelands, karaj, iran, in 2013-14. the treatment groups consisted of vermicompost (0, 5, 10 and 15 ton/ha) and cow manure (0, 10, 20 and 30 ton/ha). the experimental design was a factorial experiment based on randomized ...

Gamma irradiation is a form of pure energy which is currently used most widely for food and waste irradiation. To evaluate the potential of gamma irradiated sludge for its suitability as a soil amendment in agriculture, field experiments were carried out in a root crop, carrot (Daucus carota). Treatments consisting of three sources of manure (Farmyard Manure (FYM), gamma-irradiated sewage sludg...

the use of vermicompost and fall fertilization in soilless culture on strawberry cv. camarosa quality characteristics was evaluated in a factorial based on completely randomized design pot experiment with 5 replicates. experimental treatments were four chemical fertilization timings (no fertilizer, using fertilizer at fall, spring, fall + spring) and three levels of vermicompost (10, 20 and 40%...

Abstract Livestock manure is reported to be one source of methane (CH 4 ) emission. The objective this study was measure production from several types livestock manure. experiment used a completely randomized design (CRD), with 6 kinds (cow, buffalo, goat, rabbit, chicken, and duck). Each treatment repeated three times during 8 weeks. research method closed chamber method, intervals 5 minutes. ...

under favorable soil conditions such as existence of easily destructible organic compounds, balanced heat and moisture, adequate ventilation and abundant nutrients, organic materials are mineralized. once mineralizing occurs, mineral elements like p, s, ca, mg, k and other cations are released. a related study was conducted to determine the effect of seven organic fertilizers (leaf mold (lm), r...

In order to study the response of concentration and composition of essential oil of coriander (Coriandrum sativum) to cattle manure and nitrogen fixing bacteria, an experiment was conducted as factorial experiment in the base of randomized complete blocks design with twelve treatments and three replications at homand research station in Damavand of Iran in 2010. The factors were cattle...