The paper presents a new method of determination of economic benefits of land consolidation of farms, which result from reduction of land parcels' number. A model method and a logical method have been applied. The discussed economic benefits have been determined by means of comparing economic evaluation of a model farm's land configuration before and after land consolidation. As a result of analysis, a mathematical formula that describes an economic benefit of land consolidation, resulting from the reduction of land parcels number, has been derived. The economic benefit is a function of the differences between the numbers of arable fields and the differences between the area of an arable lands and green lands of a farm, before and after land consolidation, as well as constant parameters and slope of linear regression equations for the models of such fields. The benefit does not depend on the area of farms.

On September 16, 2019, prof. dr hab. Janusz Haman, member of the Polish Academy of Sciences passed away. The death of the Professor is a great loss not only for the family, but also for the entire national scientific community of agricultural engineering – the discipline of which he was the creator in Poland, and at the same time one of the greatest authority on an international scale. He has worked for almost 20 years at the Central Qualification Committee for Scientific Personnel (formerly CKK) at the Prime Minister’s office. For three terms he was a member of the Main Council of Science and Higher Education and the State Awards Commission. For two terms he was a member of the Science and Technology Council. He was the vice-chairman of the Scientific Council of the Ministry of Agriculture for five consecutive terms. He was a member of many scientific councils, including three terms of chairmanship of the IMER Council and OIN PAN. He also actively worked in the TNOiK structure, where he was the president of the Lublin Branch and NOT, being the president of the Lublin Branch of SIMP. In recognition of the great merits for creative activity, in particular for the development of agricultural sciences, Professor Haman was awarded four times with the highest academic dignity, which is an honoris causa doctorate, and also repeatedly decorated by the state authorities: Crosses – Knight's, Officer's and Commander's with the Star of the Order of Rebirth of Poland, Distinguished Teacher PRL, National Education Medal, Copernicus and Oczapowski Medal.