Tillage is one of the most important practices affecting soil physical and hydraulic properties. Its effects may vary intensely according to tillage method. This study aims evaluate different methods (moldboard plow+disk harrow, moldboard plow+rotary tiller chisel harrow) drainage (subsurface non-drainage) on properties in a clay loam soil. The experiment was conducted split-plot time statistic...

the chisel plow is one of the tillage implements utilized to carry out conservation tillage practices; therefore, it is valuable to pay more attention on the force requirement of this implement. to achieve this goal, a theoretical model was developed to calculate draft, specific draft, and drawbar power of a chisel plow. then, results obtained from the developed model were compared with the rep...

This paper presents the context-updates synthesis component of Chisel–a tool that synthesizes a program slicer directly from a given algebraic specification of a programming language operational semantics. (By context-updates we understand programming language constructs such as goto instructions or function calls.) The context-updates synthesis follows two directions: an overapproximating phas...

Producers are frequently most interested in economic comparisons of various cropping systems. We compared continuous corn (Zea mays L.) and continuous soybean [Glycine max (L.) Merr.] with 2-, 3-, and 5-year rotations, the latter two including wheat (Triticum aestivum L.) and alfalfa (Medicago sativa L.), using either chisel plow or no-tillage practices. Crop yield and returns to land and manag...

Minimizing the risks associated with manure-borne pathogenic microorganisms requires an understanding of microbial survival under realistic field conditions. The objective of this 3-year study was to assess the fate of Salmonella (SALM) and fecal indicator bacteria (FIB), E. coli (EC) and enterococci (ENT), in glacial tillderived soils, after application of poultry manure (PM) to cornfields und...

background: the aim of this study is to develop a new ergonomics chisel based on user centered design approach and to evaluate the effectiveness for reducing awkward posture using catia software for simulation analysis. methods: respondents were selected using purposive sampling – age 18 – 49 years old, men, experience using chisel (>1 month). a set of questionnaire were used to interview worke...

Abstract Chisel plows with a chisel as working body, loosen the soil without mixing layers. The analysis of conducted research concludes that most widespread is cylindrical surface body - constant radius curvature. It theoretically established at curvature bit up to 0.1 m, on will move chaotically, while does not affect percentage wrapped plant debris. As increases, force inertia decreases, the...

The applied methods of applying fertilizers for cotton in Uzbekistan do not fully ensure the supply nutrients to plant's root system. study aims substantiate technological process uniform distribution development zone and parameters coulters. When fertilizer is distributed tiers right ratio, coefficient their use increases, yield increases. research uses laws rules theoretical mechanics, mathem...