Sustainability of arable agriculture is an important issue facing the world nowadays. The last green revolution was achieved with a mix of technologies such as chemistry, engineering and genetics. In the nearest future the need for another green revolution is could be arising but this time with less chemistry being involved as the agricultural sustainability has been degrading. The concern is massively increased for the last decades because everyone has been trying to increase agricultural production substantially but the environment has not been paid much attention. Analysis of different factors influencing the arable agriculture is key assumptions that help to understand future agricultural sustainability. Hence it is possible to identify the new targets and toward which investment must be prioritised. There are many factors that can be contributed to effect of arable agriculture but only some of them are considered in this essay which ranked as being more crucial than others. These are believed to be genetic improvement in plant breeding, adapting new policies and wise management of farming. Conclusion is that breeders and managers in agriculture must work more closely is the enormous challenge of global sustainable productivity is to be met.

This work is devoted to research of tribotechnical characteristics of 3D printed samples from ABS plastic. The results of determination of friction coefficient and depth of counterbody introduction into the sample surface on Tribometer TRB-S-DE-0000 are presented. The article also presents the advantages of using 3D printing for repairing machine parts and describes the causes of gear failure.

The results obtained in studies of additively produced spray nozzles used in agricultural sprayers are presented. The samples studied were produced with th

This paper offers a method for increasing the strength of FDM 3D printed parts by impregnation in a vacuum chamber in an environment of an epoxy compound with a long lifetime. We investigate the impact of the duration of impregnation and the internal geometry of the part being impregnated on the impregnation degree, expressed in the absence of cavities inside the material. The experimental samples are cylinders made of PLA plastic, the impregnation is carried out in an epoxy resin-based compound with PEPA hardener. The use of this strengthening technology may be useful for expanding the scope of FDM 3D printing from prototyping, being currently the most common application, to manufacturing parts for actually functional structures, which, unlike prototypes, carry load while in use, and therefore need increased strength.

Wear is the leading cause of nozzle failure. The durability of the nozzle is affected by the material it is made from. Traditional materials are ceramics, stainless steel, brass, and polymers. One of the possible ways to improve the wear resistance of polymer nozzles is through the incorporation of dispersed fillers into them. This paper presents the results of testing polymer composites for their chemical resistance to pesticides, examining the effects of different types and amounts of fillers on the chemical and abrasion resistance. When silicon carbide was used as a filler, the strength increased by 30.2%. The experiments on chemical resistance to pesticides revealed that the nature, shape, and volume content of filler particles do not significantly affect the resistance of the compounds obtained. Tests on hydro-abrasive wear have shown that graphite and silicon carbide are effective fillers capable of reducing wear by up to 7.5 times. Based on previous research, it is recommended to use a composite compound with 15% volume of silicon carbide for nozzle manufacturing.