Nitrogen uptake preference of cotton (Gossypium hirsutum L.).

ABSTRACT: Low molecular weight (LMW) soil organic nitrogen (N) can be a significant source of N in commercial cotton (Gossypium hirsutum L.) systems, potentially comprising a meaningful portion of N uptake in Australian irrigated cotton. Cotton obtains the majority of its N from the soil N pool rather than directly from fertiliser-N. Organic N is the major component of the soil N pool. The purpose of this study was to test the ability of G. hirstutum to take up different organic and inorganic N forms using isotopically labelled compounds. This was done in a sand matrix to reduce potential for microbial competition and enable a clearer view of the physiological capacity of the plant to access different N forms. The experiment showed that cotton took up inorganic N (NO3- and NH4+) and organic N (alani

SUBMITTER: Latimer JO 

PROVIDER: S-EPMC12700366 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature