Main content area

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.