Cover crops can be effective in minimizing nutrient losses from agricultural fields. The objective of this study was to determine the impact cover crop (rye, Secale cereale L.) and winter manure application on loss simulated rainfall runoff. A split block design with (as vertical block) horizontal established 2009. Two rain simulations (the first defined as “dry” second “wet”) using sixteen 4 m...

in recent years, in order to enhance the health of agroecosystems, concerns on ecological inputs especially to produce medicinal plants, has been increased. in order to evaluate the effects of winter cover crops on pgprs activities and soil nitrogen content in simultaneous application of organic manures and biological fertilizer in a low input production system of cucurbita pepo under minimum t...

Soil microcosms were inoculated with Escherichia coli O157:H7 to test persistence in fallow soil, on roots of cover crops and in presence of manure. In fallow soils, E. coli O157:H7 persisted for 25-41 days, on rye roots for 47-96 days and on alfalfa roots, in a silt loam soil, for 92 days whereas on other legumes persistence ranged from 25-40 days, similar to fallow soil. Manure did not seem t...

Growing degree days (GDD) is a tool to predict plant growth and can be adapted for use in any species, including cover crops. A limitation of the GDD calculation accurate temperature parameters used development. For most crop cardinal temperatures are not well defined literature, leading less GDD. The objective this study was determine eight Austrian winter pea (Pisum sativum), balansa clover (...

Increased CO2 release from soils resulting from agricultural practices such as tillage has generated concerns about contributions to global warming. Maintaining current levels of soil C and/or sequestering additional C in soils are important mechanisms to reduce CO2 in the atmosphere through production agriculture. We conducted a study in northern Alabama from 2003 to 2006 to measure CO2 efflux...

ABSTRACT One of the pillars a no-tillage system is addition adequate amounts residue to keep soil continuously covered. Cover crops are tool for supplying demand permanence residues on surface and releasing nutrients soil. However, there no index that relates these two factors can reconcile maximum crop in with N supply via mineralization such residues. This study aimed assess effect different ...

The current emphasis on sustainable agricultural systems has led to a renewed interest in the use of cover crops to reduce soil erosion losses and retain soluble nutrients during the dormant season. Cover crop choices include a broad range of plant material, such as ryegrass (Secufe cereale L.), winter wheat (Triticum aestivum L.), forage grasses, and legumes. Historically, cover crops were use...

Digestate, a by-product of biogas production, is widely recognized as promising renewable nitrogen (N) source with high potential to replace synthetic fertilizers. Yet, inefficient digestate use can lead pollutant N losses ammonia (NH3) volatilization, nitrous oxide (N2O) emissions and nitrate (NO3-) leaching. Cover crops may reduce some these recycle the back into soil after incorporation, but...

The magnitude of ecosystem services provided by winter cover crops is linked to their performance (i.e., biomass and associated nitrogen content, forage quality, fractional ground cover), although few studies quantify these characteristics across the landscape. Remote sensing can produce landscape-level assessments crop performance. However, commonly employed optical vegetation indices (VI) sat...