Raminoarison M. auteur aut IRD Razafimbelo T. auteur aut IRD Rakotoson T. auteur aut IRD Becquer Thierry auteur aut IRD Blanchart Eric auteur aut IRD Trap Jean auteur aut IRD text journalArticle eng text/pdf born digital access To optimize the nutrient management of upland rice production on tropical ferralsols, a greenhouse experiment was established using the multi-nutrient omission approach. A reciprocal soil origin-rice cultivar transplant experiment was also conducted to better understand the relative contributions of the soil origin and the rice cultivar in rice nutrient limitation. We tested the deficiency of seven major and secondary nutrients [nitrogen (N), phosphorus (P), potassium (K), sulfur (S), calcium (Ca), magnesium (Mg), and silicon (Si)] and a solution of six micronutrients (B, Mn, Cu, Co, Na, Mo) likely to limit the growth of two upland rice cultivars, Chhomrong Dan and Nerica 4, on two Ferralsols from the highlands of Madagascar. We found severe multiple nutrient deficiencies. For both cultivars, P, Ca, N, Mg omission significantly depressed the shoot and root dry biomass and their amounts in plant tissues. However, the main limiting nutrients were not the same in both soils. We conclude that the multinutrient deficiencies observed for rice growth in the Ferralsols are site-specific, even though P limitation appears to be in common, and requires a holistic consideration of the mineral fertility, including micronutrients. specialized Greenhouse trial ferralsols Madagascar nutrient limitation rice cultivars upland rainfed rice MADAGASCAR 068 076 43 2 270-284 2020 0190-4167 https://www.documentation.ird.fr/hor/fdi:010077174 10.1080/01904167.2019.1676906 0190-4167 [F B010077174] https://www.documentation.ird.fr/hor/fdi:010077174 https://www.documentation.ird.fr/intranet/publi/depot/2020-10-22/010077174.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2019-12-12 2025-02-24 fdi:010077174 fre