Biomass and Nutrient Content by Sugarcane as Affected by Fertilizer Nitrogen Sources. Issue 3 (1st May 2016)

• Record Type: Journal Article
• Authors: Mariano, Eduardo; Leite, José M.; Vieira‐Megda, Michele X.; Ciampitti, Ignacio A.; Vitti, André C.; Faroni, Carlos E.; Franco, Henrique C. J.; Trivelin, Paulo C. O.
• Is Part Of: Crop science. Volume 56:Issue 3(2016)
• Page Start: 1234
• Page End: 1244
• Publication Date: 2016-05-01
• Subjects: Crop science -- Periodicals; Cultures -- Périodiques; Cultures de plein champ -- Périodiques; Crop science; Nutzpflanzen; Zeitschrift; Pflanzenbau; Periodicals; 633
• DOI: 10.2135/cropsci2015.06.0349
• Languages: English
• ISSNs: 0011-183X

Abstract

Abstract : Knowing the right fertilizer N source is a key management practice for improving nutrient use and productivity for sugarcane ( Saccharum spp.). Therefore, this study evaluated the effect of fertilizer N sources on aboveground biomass (BM) and nutrient (N, P, K, Ca, Mg, and S) content for sugarcane ratoon. Two field trials under highly weathered tropical soils (Site 1, Typic Hapludox; Site 2, Typic Eutrustox) were conducted in the southeast region of Brazil. Five fertilizer N sources (organomineral fertilizer [OMF], ammonium chloride [AC], ammonium nitrate [AN], calcium ammonium nitrate [CAN], and urea) were applied on sugarcane at a rate of 100 kg N ha −1 . A control treatment was also included in the randomized complete block design. At harvest, total BM varied from 24.4 Mg ha −1 (control and AC) at Site 1 to 44.2 Mg ha −1 (CAN) at Site 2, total K content varied from 185 kg ha −1 (AC) at Site 2 to 747 kg ha −1 (OMF) at Site 1, and total N content ranged from 92 kg ha −1 (AC) at Site 2 to 165 kg ha −1 (AN) at Site 1. Use of CAN and OMF resulted in comparable or superior BM and nutrient content relative to the other N fertilizers. In contrast, AC did not increase BM and nutrient content (except for N and Mg at Site 1), but also decreased by 33% total N content than control at Site 2. Use of more efficient fertilizer N sources (e.g., CAN and OMF) could increase productivity and nutrient use for sugarcane ratoon systems.