Phosphorus–zinc interactions in cotton: consequences for biomass production and nutrient‐use efficiency in photosynthesis

• DOI: 10.1111/ppl.12867
• Publication Date: 2018-12-05T09:20:27Z
• Authors: Elcio Ferreira Sa...; Paula Pongrac; André Rodrigues Reis; Philip J. White; José Lavres
• Keywords: 580; 2. Zero hunger; Gossypium; Phosphorus; 04 agricultural and veterinary sciences; 15. Life on land; Plant Roots; Zinc; Plant Stomata; 0401 agriculture, forestry, and fisheries; Biomass; Photosynthesis; Plant Shoots

The fragmentary information on phosphorus (P) × zinc (Zn) interactions in plants warrants further study, particularly known for their high P and Zn requirements, such as cotton (Gossypium hirsutum L.). objective of this study was to investigate the effect a modern cultivar grown hydroponically. Biomass, mineral nutrition photosynthetic parameters were monitored receiving contrasting combinations supply. Root biomass, length surface area similar with low and/or supply those supply, reflecting an increased root/shoot biomass quotient when lack sufficient or growth. Increasing reducing shoot concentrations, whilst concentrations influenced largely by A balanced (4 mM 4 μM Zn) enabled greatest accumulation, while imbalanced these nutrients led deficiency, toxicity toxicity. Net rate, stomatal conductance, transpiration rate instantaneous carboxylation efficiency increased. Although increasing reduced P-use photosynthesis (PUEP) Zn-use (ZnUEP), at given PUEP ZnUEP. These results suggest that agricultural management strategies should seek optimize yields resource-use efficiencies.