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We investigated the maize grain yield in response to nitrogen topdressing at different planting densities and planting patterns (twin row, TR; narrow row, NR; and conventional row, CR) over 3 years using early‐maturing cultivars. The P8025 grain yield was higher with a nitrogen topdressing of 6 g/m2 (N6) than without a nitrogen topdressing (N0) at all planting densities in 2017, 2018, and 2019. The...
We investigated how two planting patterns, twin row (TR) and narrow row (NR), affected maize grain yield compared with conventional row (CR) cultivation at five different planting densities, ranging from 7 to 12 plants/m2, over 2 years using early and late cultivars. For all the planting patterns, the relationship between grain yield and planting density could be fit using the quadratic curve Y = ...