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Foliar root stimulant Poster

Research into foliar root stimulants

Jerry11
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Foliar root stimulant Poster

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  1. Foliar Root Stimulant Effectsover 170 days on a mixed Poa/Agrostis green in relation to Colour response and root growth with no supplementary nutrition. Jerry Spencer Gilba Solutions and Cameron Smith Bonnie Doon G.C Introduction Foliar root stimulants are commonly marketed in the Australian turfgrass established looking at the impact of these on turf colour response and root growth over a 6 month period to see what impact they had in an end user situation on a highly maintained golf green with no other nutrition being applied. Figure5.No significant differences were apparent between treatments at all depths industry. A trial was Photo1:Green showing visual appearance of green during trial Objective To determine if any response is evident with the use of these in regard to root architecture, organic matter and colour reponse. MaterialsandMethods A randomized complete established at a Group 1 golf course in Sydney on a mixed Agrostis (var. A1/A4) Poa annua green maintained at 3mm. The trial comprised of 7 treatments with 4 replicates being conducted from May to November 2021. Plots were 1 m2with foliar applications being applied monthly.Response variables including weekly digital image analysis were measured (RStudio), in addition to organic matter content at 0-2cm, 2-4cm and 4-6cm at 170 days after first treatment. Figure2,3and4.Dark Green Colour Indexand Organic Matter by Depth DAT and following 7 applications.Meanswereseparated usingleastsignificantdifference(LSD). (LOI) evaluated after 170 block trial was Results Turf Quality (DGCI) All treatments gave an unacceptableresponse as stand alone fertilizers. Table 1. Foliar root stimulants applied kg/Ha Product No. Composition Loss on Ignition (LOI) There were no significant differences between treatments at the 0-2cm depth although MP Roots gave the highest OM content and Seaweed Extract the lowest. There were no significant differences between treatments at the 2-4cm depth. MP Roots gave the highest and MAP Tech the lowest. There were no significant differences between treatments at the 4-6cm depth. AzoPro gave the highest and MAP Tech the lowest. 1 2 3 4 5 Rocastem MAP Tech (Control) Proprietary 5 + 5 25 40 10 MAP Proprietary MP Roots Root stimulant Seaweed extract Ca, Mg, B, Cu, Fe, Zn 10 Tas. Bull kelp Red algae Carageenan 6 0.5 Azospirillum brasilense CD 7 AzoPro 2.5 Conclusions Statistical Analysis- DGCIandLOI analysisdatawere subjecttoanalysisofvariance(α=0.05). Meanswere separatedusingFisher’sProtectedLSD. Figure 1. DGCI readings fell over the duration of the trial to be below acceptable levels None of these are recommended to be used as standalone fertilizers. Although not statistically proven AzoPro showed evidence of increasing organic matter content to depth (4-6cm) without increasing surface organic matter, in contrast to MP Roots A separate trial incorporating supplementary nutrition to treatments should give a more "real-time" indication of what these products do on a golf green. Based on these results the effectiveness of some of these products on a cost/result basis would have to be strongly questioned as either stand-alone fertilizers or in order to stimulate root growth.

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