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Corn yield components response to nitrogen fertilizer as a function of soil texture
- Cambouris, Athyna N., Ziadi, Noura, Perron, Isabelle, Alotaibi, Khaled D., St. Luce, Mervin, Tremblay, Nicolas
- Canadian journal of soil science 2016 v.96 no.4 pp. 386-399
- Zea mays, chlorophyll, clay, clay soils, corn, drainage, flowering, grain yield, leaching, nitrogen, nitrogen fertilizers, seeds, soil texture, stover, texture, yield components, Quebec
- Information on how soil texture and related soil properties affect corn (Zea mays L.) nitrogen (N) response is needed to improve N management in corn production. We conducted a study at 12-site yr in Quebec to assess the effect of N rate (0–250 kg N ha⁻¹) and soil surface textural groups [clay, loam, sandy belonging to the gleysolic soil order (Sg), and sandy belonging to the podzolic soil order (Sp)] on corn grain yield, stover yield, total N uptake (TNU), nitrogen uptake efficiency (NUE), thousand kernel weight (TKW), test weight, and chlorophyll meter readings (CMR). Corn was more responsive to N rate in the clay soil textural group for most of the parameters due to lower soil N supply, and least responsive in the Sp group, except for test weight and CMR, due to possibly greater leaching in this group. The CMR at flowering accounted for 87%, 87%, 82%, and 25% of the variation in grain yield, TNU, TKW, and test weight, respectively. This study suggests that soil surface texture has a major influence on corn N response, but other soil properties such as drainage may also be important.