Zinc fertilization strategies in soybean: plant uptake, yield, and seed concentration

MARTINEZ CUESTA, N.; CARCIOCHI, W.D.; WYNGAARD, N.; SAINZ ROZAS, H.R.; SILVA, S.; SALVAGIOTTI, F.; BARBIERI, P.

JOURNAL OF PLANT NUTRITION

TAYLOR & FRANCIS INC

Lugar: Londres; Año: 2022

0190-4167

Based on the expected increase in soybean (Glycine max L.) demand and the current yield gap, smart management strategies of crop nutrition are required to improve the use of resources. Given that zinc (Zn) deficiency is the most widespread micronutrient problem in agricultural production systems, the objective of this study was to evaluate, under field conditions, the effect of different Zn fertilization strategies on seed yield, Zn uptake, and seed Zn concentration in Zn-deficient soils. To this end, a field experiment was conducted at three sites evaluating the following treatments: (i) Control = no Zn application; (ii) Seed-Zn = Zn applied to the seed (0.3 kg ha−1); (iii) Foliar-Zn = Zn foliar-applied at V5 (0.7 kg ha−1); and (iv) Soil-Zn = Zn applied to the soil at sowing (2.1 kg ha−1). At all sites, Zn fertilization significantly (p