Abstract A balance between soil water and air is needed to optimize microbial activity in laboratory incubations. Some fraction of holding capacity (WHC) often used during controlled incubations, yet this level may differ among soils. This study was undertaken develop relationships gravimetric volumetric content, WHC, water‐filled pore space (WFPS) a variety soils, representing eight orders, 46...

high intensity evaporation from the soil surface due to low air humidity and poor soil structure and organic matter are constraints of agriculture in arid and semi-arid regions of iran. regionally, maintaining plant residue with tillage management is one method to improve these conditions. in this study, for a barley-corn rotation, four barley residue management methods for standing stubble (bu...

The bioavailability of the PAH (polycyclic aromatic hydrocarbon) model compound pyrene to the deposit-feeding polychaete Arenicola marina was studied at pyrene concentrations ranging from 0 to 10 ppm. By manipulating the sediment organic content, different distributions of pyrene between particle-associated pyrene, pyrene bound to dissolved organic matter (DOM) and freely dissolved pyrene were ...

Physical and chemical characteristics of the water column and sediments at sea bass/sea bream farm located on the middle Adriatic island of Brač were investigated during the 2001-2006 period. Measurements and samplings were performed at stations inside the farm area and at reference station, approximately 1 km distant from the farm. Investigated parameters in the water column were temperature, ...

Feed is an absolute necessity that must be guaranteed in the maintenance of ruminants but its availability always a problem during dry season so fresh forage difficult to obtain and only agricultural waste form straw available. One widely used by farmers, especially Lombok region, corn straw. This research aims evaluate nutritional content has been ammoniated using urea. study urea for ammoniat...

In this study, poultry manure compost and organic fertilizer were added to soils derived from basalt, granite, and river alluvial deposits for use as soil parent materials. Following incubation periods of 30 or 60 days at 25 °C, the physical and chemical properties and adsorption characteristics of the soils were studied. The results indicated that the application of poultry manure compost or o...

introduction using agricultural-industrial waste is one way to overcome the shortage of animal feed. potato is one of the most important products in the world after rice, wheat and maize. potato pulp is a by-product which remains after extraction of starch, and can be used as animal feed. because of the high moisture content of the potato pulp, silage is the best way to maintain it. however, it...

Manure not only supplies many nutrients for crop production, but it is also a valuable source for increasing soil organic matter content and improving soil structure. To increase organic manure content as well as improve the wheat production adding plant residues and livestock to soil is necessary. The experiment was conducted in Shavoor Research Station to determine seed yield and soil physica...