The cost efficiency of higher doses of compost application

Application of higher doses of compost has several technical problems at the same time. Compost application at higher doses required relatively high consumption of working time deployed machinery. That is mainly affected loading capacity of the spreaders. Standard is a spreader with a loading capacity of 5–10 t, for higher capacity it is necessary to monitor the influence of the chassis to a higher soil compaction, especially in wheel tracks. This paper deals with determination of the cost of application for spreading compost at high doses 60–100 t.ha−1. From the proven data of performance, acquisition costs of machinery and fuel consumption were determined hectare costs for the spreader of carrying capacity 5, 8, 10 a 15 t and transport distances corresponding to an area of 8–100 hectares of fertilized land. Costs were determined by using the program AGROTEKIS, by using the database machines, manufacturers data and other available data, direct measurements and related experiments. Application costs for the dose 60 t.ha−1 are 2 100–5 250 CZK.ha−1, for the dose 80 t.ha−1 are 2 750–7 000 CZK.ha−1and for the dose 100 t.ha−1 are 2 650–8 650 CZK.ha−1. The results are useful for quick and easy calculation of costs for fertilizing with higher doses of compost and deciding on the selection of used spreader.

PREDICATE GATES, COMPONENTS AND A PROCESSOR FOR SPATIAL LOGIC

Predicate logic gates, components and a processor are proposed for space–time signals and computing. Voltage impulses are transmitted along two wires and the signals are considered as predicate expressions. The developed simple gates and components perform the predicate logical operations AND, NOT, and OR with these expressions. For design and verification of all components and the processor, the CPLD and FPGA boards and corresponding software are used. The designed processor is compatible with classical computers and applicable in the area of artificial intelligence as well as linguistic calculations, database machines, SQL servers, etc.