ZNC has been the subject of investigations as a plant biostimulant.
Back in 2019, in a paper published in the journal Plant Soil, results showed that ZNC “exhibited ultrahigh activity in promoting plant growth and enhancing disease resistance, even at concentrations as low as 1–10 ng/ml.” In the conclusion, the authors of the paper concluded that ZNC was an “effective plant elicitor that promotes plant growth by inducing auxin accumulation at the root tip at low concentrations and enhances plant disease resistance by activating the salicylic acid (SA) signaling pathway at high concentrations.”
Research has also been carried out on combining the biostimulant with a fertilizer. In 2020, a paper was release that studied the effect of ZNC on maize yield and root morphological characteristics when combined with diammonium phosphate and controlled-release diammonium phosphate (CRP).
Published in the journal Field Crops Research in May 2020, the research was aiming to measure the effect on phosphate use efficiency, as well as yield and root growth. Pengbo Biotechnology provided the recommendation for usage at 1.5 g/ha in liquid form based on the common practice of fertilizer application by local farmers.
When describing the results, the paper said that both the CRP and DAP+ZNC increased root length. Interestingly the combination of controlled-release DAP and ZNC (CRP+ZNC) showed no significant difference to average maize yield and net income over the separate treatments of controlled release phosphate and DAP+ZNC. “Hence the application of CRP or ZNC could increase maize yield by improving soil P supply intensity to meet maize P demand and promoting root morphological characteristics and vitality,” the paper concluded, adding that further work was needed on biostimulant enhanced fertilizer.
ZNC has also been the subject of studies with controlled-release urea.
Pengbo Biotechnology also provided the ZNC for a study published in April 2020 in BMC Plant Biology in a paper entitled ‘Ultrahigh-activity immune inducer from Endophytic Fungi induces tobacco resistance to virus by SA pathway and RNA silencing.’
For more about ZNC, see New Ag International China & EU Digital Exchange, here.