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In Brazil N fertilization of sugarcane (Saccharum spp.) is low compared to most other countries. 15N-aided studies and the occurrence of many N2-fixing bacteria associated with cane plants suggest significant contributions from biological N2 fixation (BNF). The objective of this study was to evaluate BNF contributions to nine cane varieties under field(More)
With the ordinance that prohibits sugarcane harvesting with prior burning of plantations in Brazil, sugarcane crops absorbs barely 20 % of the N-fertilizer applied. This low recovery is attributed, in part, to nitrogen (N) mineralization in plant straw, high microbial immobilization, and N losses in the soil-plant system, mainly, when sources containing(More)
Unraveling nutrient imbalances in contemporary agriculture is a research priority to improve whenever possible yield and nutrient use efficiency in sugarcane (Saccharum spp.) systems while minimizing the costs of cultivation (e.g., use of fertilizers) and environmental concerns. The main goal of this study was therefore to investigate biomass and nutrient(More)
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