Proso millet (Panicum miliaceum L.) is well-adapted for the Central Great Plains and could be planted in a winter wheat (Triticum aestivum L.)-millet-fallow rotation, resulting in two crops in 3 yr. To determine the most suitable tillage system for proso millet production within this rotation, seven tillage management systems were evaluated over a 6-yr period (1972-1977). The research was condu...

The analysis of soil cultivation technologies for sowing melon crops was carried out. design a combined tillage tool capable plowing, pre-sowing treatment and formation irrigation furrows in one pass substantiated. main is recommended to be done by front plow tools smooth plowing. Plow bodies two bottom plows should mounted along the symmetry axis implement according lister scheme, which allows...

Goal. Determination of the influence plow front plows on its traction resistance and operational technological indicators unit transverse profile surface plowed field. Methods. Theoretical studies were carried out using main provisions theory agricultural machines, theoretical mechanics higher mathematics. The corresponding calculations a PC in Mathcad 15.0 software environment, their graphic i...

Abstract In areas with a pronounced relief, water erosion causes great harm to agriculture and other sectors of the national economy. It leads destruction soil cover, reduction in area arable land, decrease fertility, removal products into floodplains, siltation ponds rivers road network. The scientific goal was identify influence main natural factors (snow reserves, freezing moisture) on forma...

Plow pan is one of the main obstacles to high production agricultural plants in Chongqing, China. As a minimal tilling method, subsoiling can break plow and help growth plants. There are two methods: vibrating (VS) traditional (TS). A soil model with upland field features Chongqing was established for DEM-based simulation. The simulation validated by experiments, items looseness, coefficient di...

In this paper we describe an Interior Point Method (IPM) to solve large scale NonLinear Programming (NLP) problems, tailored to the solution of a specialized Optimal Power Plow (OPF) formulation that uses bus voltages in rectangular coordinates. The distinctive feature of this OPF formulation is that the objective function and constraints are quadratic functions, and such quadratic properties a...