Changes in growth-production parameters of Lolium perenne L. turf after application of concentrated polysulfide fertilizer

Abstract

The changes in growth rate, daily production of above-ground phytomass and lawn density of turfgrass after application of fertilizer based on polysulfide (Sulka NKS+) were evaluated in Nitra (the Slovak Republic) climatic conditions. The polysulfide preparation was applied 2-times, 4-times and 6-times during the vegetation period in 2015–2017 and the effect was compared with a zero control. Stimulatory effect of Sulka NKS+ was shown in the average daily gain of grass height and average daily gain of aboveground phytomass weight with the most visible expression in the 2nd and 3rd year of cultivation. For the thickening lawn index was found out inhibitory effect of polysulfide fertilizer. The average values of the first two characteristics (average daily gains of grass height and weight of above-ground phytomass) have also increased with the increasing number of Sulka NKS+applications.

Effects of Apatite Concentrate in Combination with Phosphate-Solubilizing Microorganisms on the Yield of Ryegrass Cultivar Izorskiy

“…To sum up, we have demonstrated that the accumulation of the aboveground biomass (according to dry weight) was the highest in V8 (finely ground apatite in combination with BI14 and BS89 strains), whereas that of the total biomass was maximal in V5, where it was 17% higher than in the control. Ryegrass, similar to other crops, needs enough nutrients for growing without decreasing its regenerative capacity, density, and productivity [23]. As a rule, most mineral fertilizers are obtained in granular form.…”