Efficacy of zinc oxides as fertilisers

Effects of ZnSO4 and Zn‐EDTA applied by broadcasting or by banding on soil Zn fractions and Zn uptake by wheat (Triticum aestivum L.) under greenhouse conditions

“…). Similar results were obtained by McBeath and McLaughlin (). Contrary to our results, other researchers found higher use efficiency for banded application than broadcast application ( Zhang et al., ; Imran and Rehim , ; Liu et al, ).…”

Fortification of micronutrients for efficient agronomic production: a review

“…Micronutrients are currently presented to plants as salts (e.g., FeSO 4 , MnSO 4 , ZnSO 4 ), chelated compounds (e.g., Fe/Zn-EDTA), or bulk (≥1000 n) oxide particles (e.g., ZnO) (McBeath and McLaughlin 2014;Monreal et al 2015). The use of salt micronutrients for fertilizers implies that the nutrients are delivered as soluble ions (Table 1), which are both readily plant-bioavailable and rapidly lost from the soil.…”

“…The use of salt micronutrients for fertilizers implies that the nutrients are delivered as soluble ions (Table 1), which are both readily plant-bioavailable and rapidly lost from the soil. In contrast, chelated compounds, though present in soluble form, have longer availability time in the soil, while bulk particulate micronutrients have to first become solubilized in the soil solution, often at slow rates, prior to uptake by the plant (McBeath and McLaughlin 2014). The availability to crops of solubilized micronutrients is dictated by soil factors that often constrain their uptake by plants, leading to low uptake efficiency.…”

“…Release rate for ZnO NPs is intermediate between that of Zn salt and bulk ZnO, and the release kinetics of the NPs shows a more steady but slow increase over time. For both figures, the crop bioavailability or otherwise of the released nutrients would depend on rhizosphere chemistry, similar to the interaction of soluble salts with soil factors (adapted from Dimkpa et al 2012a andMcBeath andMcLaughlin 2014, with permission) instance, micronutrient-amended macronutrients can be produced by fertilizer production plants without significantly disrupting the production process. In this case, the micronutrients could be added at the end of the macronutrient production line by coating the finished macronutrient granules with salts or oxide powders of micronutrients, using materials as common as vegetable oil, or other industrial coating products, with environmental biocompatibility in mind.…”

Co-Granulated and Blended Zinc Fertilizer Comparison for Corn and Soybean

“…A corn fertilizer study in West Virginia with three amounts of Zn (0, 3.36, and 6.72 kg Zn ha -1 ) also observed no-yield response to Zn treatment (Stout & Bennett, 1983). An efficacy study of ZnO concluded that it and ZnSO 4 had similar plant nutrient recovery when incorporated in the soil; however, ZnSO 4 had a greater plant recovery than ZnO when the fertilizer was band-or surface-applied (McBeath & McLaughlin, 2014). In Michigan, a three-year study with 220 kg of fertilizer ha -1 comparing MAP and DAP observed no change in tissue P or Zn concentration and detected no yield difference Vol.…”