The efficiency of humic growth stimulators in pre-sowing seed treatment and foliar additional fertilizing of sown areas of grain and industrial crops

M.M. Marenych¹, V.V. Hanhur², O.I. Len³, Yu.M. Hangur³, I.I. Zhornyk¹ and A.V. Kalinichenko⁴*

¹Poltava State Agrarian Academy, Faculty of Agro-Technology and Ecology, Department of Selection, Seed Growing and Genetics, 1/3 Skovorody street, UA36003 Poltava, Ukraine
²The Institute of Pig-Breeding and Agro-Industrial Production of the National Academy of Agrarian Sciences of Ukraine, 1 Shvedska mohyla street, UA36013 Poltava, Ukraine
³Poltava M.I. Vavilova State Agricultural Experimental Station of the Institute of Pig-Breeding and Agro-Industrial Production of the National Academy of Agrarian Sciences of Ukraine, 86 Shvedska mohyla street, UA36014 Poltava, Ukraine
⁴University of Opole, Faculty of Natural Sciences and Technology, Institute of Technical Sciences, Dmowskiego street 7–9, PL45–759 Opole, Poland
*Correspondence: akalinichenko@uni.opole.pl

Abstract:

The aim of the research was to establish the effectiveness of preparations, made on the basis of humic and fulvic acids on the yields of crops in case of different methods and amounts used. The experiments were held with varieties and hybrids of winter wheat, soya, corn, and sunflower. Based on the obtained results of investigation during the period of 2015–2017, the positive impact of foliar additional fertilizing with 4R Foliar Concentrate growth stimulator on the basis of humic and fulvic acids on the formation of productivity of the main crops sown areas was established.
Proceeding from the results of the research, the using of growth stimulators based on humic and fulvic acids, which contain high concentrations of these substances, can be recommended as an expedient and efficient measure of raising the productivity and improving qualitative indicators of corn, sunflower, soya, and winter wheat yields.

Key words:

fertilizing, humic substances, plant development, seed treatment

Case study: Economics of spring feeding in grassland

K. Tamm and R. Vettik

Estonian Research Institute of Agriculture, Teaduse 13, Saku, Estonia;e-mail: Kalvi.Tamm@neti.ee

Abstract:

Change in world energy prices influences the price of mineral fertilisers. To meet the globally growing need for food farmers are extending the production of milk and meat, facilitating thereby an increase in manure production. The distance of the grassland from the farm centre and fertiliser prices influences farmers’ choices regarding the art and logistics of fertilising. The aim of this study is to compose a calculation model to compare the economic aspects of different fertilising options considering the grassland distance and the art of fertilising. The model contains components from the method applied to evaluate the rationality of exploitation of a field, considering the costs pertaining to field distance. Spring N feeding of grassland was simulated and five technologies were compared with the model.In calculations it was presumed that manure comes from a farm’s own production and thecosts arise only from hauling and distribution. In comparison with mineral fertiliser, these costs increase with driving distance; therefore it is economical to use only manure near the farm compound. In average Estonian forage production conditions, the N rate 75 kg ha-1 minimum value using cattle slurry distribution with a shallow injection system is more economical than using mineral fertiliser.It can be also concluded that compared to a distributor, using a tank truck for haulingslurry is beneficial on farther parcels (under the conditions in the simulation, farther than 4.2 5 km), as in those cases the hourly operation cost of the slurry distributor is very high.

Key words: