Title: Agronomic characteristics of corn for silage under nitrogen and potassium levels by covering fertilization
Abstract:The objective was to evaluate the productivity, morphological and chemical composition, in addition to the economic viability of the corn crop ( Zea mays L.) for the production of silage under differe...The objective was to evaluate the productivity, morphological and chemical composition, in addition to the economic viability of the corn crop ( Zea mays L.) for the production of silage under different levels of nitrogen and potassium fertilization in coverage. Treatments consisted of four coverage levels: T 1 (217 kg ha -1 N + 137 kg ha -1 K 2 O); T 2 (295 kg ha -1 N + 163 kg ha -1 K 2 O); T 3 (374 kg ha -1 N + 190 kg ha -1 K 2 O); and T 4 (452 kg ha -1 N + 216 kg ha -1 of K 2 O). It was found that the fertilization level had no effect (P> 0.05) in the parameters related to plant height, height of the first insertion spike and grain production, however, higher (P <0.05) dry biomass production was obtained with 374 kg ha -1 N + 190 kg ha -1 coverage K 2 O (32,346 kg ha-1). For TDN and FRV parameters, higher values (P <0.05), respectively, were observed for 374 kg ha -1 N + 190 kg ha -1 K 2 O (71.30% and 132.0) and 452 kg ha -1 N + 216 kg ha -1 K 2 O (71.14% and 131.6) coverage fertilization. However, the lower level had the lowest cost per ton of TDN ha -1 produced. Overall, the P30R50HY corn hybrid showed high productivity and adequate nutritional characteristics when grown in minimum coverage level fertilization.Read More
Publication Year: 2017
Publication Date: 2017-04-05
Language: en
Type: article
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