Tillage intensity may differently impact gaseous losses of C and N to the atmosphere, but data from long-term experiments are relatively few. Yet, this information is needed better understand gains in agricultural systems. The objective study was determine how tillage affects soil greenhouse gas (GHG) fluxes (CO 2 , O, CH 4 ) by comparing experimental moldboard plow (MP), chisel (CP), double di...

Water extractable organic matter (WEOM) is critical for soil fertility because of its role as a readily available C substrate microbial metabolism. In the semi-arid Texas High Plains, dryland cropping systems are common limited precipitation and irrigation water. Little known about long-term effects on WEOM content composition, how these differ from native grassland. The objective this study wa...

During the last decade in Mexico, profitability of basic grain crops has decreased considerably due to low productivity caused by unfavorable soil and climatic conditions, which are aggravated climate change. In addition, variability international economic environment rise fertilizer fuel prices factors that seriously affect production these food products. this context, it is important generate...

To improve the quality and energy indicators on front plow in of housings, angle axes are installed form a triangular wedge. The purpose study is to substantiate parameters angle-lift plow, which provides high-quality performance technological process according agrotechnical requirements with lowest costs for smooth, rowless plowing. research uses laws rules theoretical mechanics, mathematical ...

Mechanical vibration on mobile hard disk is inevitable in the practical usage, and violent vibration may cause disk slip with significant position error, which will degrade the servo control performance, prolong time to ready (TTR) of servo and lower reading and writing speed of the magnetic head. The servo tracking accuracy of hard disk drive actuator with respect to various mechanical disturb...

The purpose of the study was development a front plow with angle clamps, which performs, smooth plowing. authors have developed an improved clamps. constructive scheme has been given. basic principles and methods classical mechanics, mathematical analysis statistics were used in this study. Experimental studies justified processing depth within limits 10-12. 5 cm width capture is range 7.5-10 c...

Soil organic matter (SOM) is essential for sustaining soil health and crop productivity. However, changes in SOM stocks in response to agronomic practices are slow and show years later when it is too late for adjustments in management. Identifying early indicators of SOM dynamics will allow early management decisions and quick remedial action. The objectives of this study were to evaluate long-...

BACKGROUND The temporal sensitivity of the surveillance system (TemSSe) for Bovine Viral Diarrhea (BVD) in Danish dairy herds was evaluated. Currently, the Danish antibody blocking ELISA is used to test quarterly bulk tank milk (BTM). To optimize the surveillance system as an early warning system, we considered the possibility of using the SVANOVIR ELISA, as this test has been shown to detect B...