2011
DOI: 10.1590/s0100-204x2011000300009
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Nitrogênio proveniente da adubação nitrogenada e de resíduos culturais na nutrição da cana-planta

Abstract: Resumo -O objetivo deste trabalho foi avaliar a recuperação, pela cana-planta, do nitrogênio ( 15 N) proveniente da ureia e de resíduos culturais da palhada e do sistema radicular da cultura da cana (Saccharum spp. Nitrogen derived from fertilization and straw for plant cane nutritionAbstract -The objective of this work was to evaluate the recovery, by plant cane, of the nitrogen ( N-SS and 15 N-RS by plant cane was 30.3±3.7%, 13.9±4.5% and 6.4±0.9%, respectively, representing 15.9, 4.7 and 1.4% of total nitr… Show more

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Cited by 32 publications
(26 citation statements)
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“…This area had been previously cropped with sugarcane, during seven years, without burning prior to harvest, as reported by Vitti et al (2011). The soil was chemically and physically characterized according to Raij et al (2001), and the 0-0.25 and 0.25-0.50 m soil layers indicated the following results: 5.2 and 5.6 pH (CaCl 2 ); 31 and 18 g dm -3 of SOM; 42 and 12 mg dm -3 P; 3.1 and 0.5 mmol c dm -3 K; 31 and 24 mmol c dm -3 Ca; 9 and 6 mmol c dm -3 Mg; 77.4 and 53 mmol c dm -3 CEC, respectively.…”
Section: Methodsmentioning
confidence: 99%
“…This area had been previously cropped with sugarcane, during seven years, without burning prior to harvest, as reported by Vitti et al (2011). The soil was chemically and physically characterized according to Raij et al (2001), and the 0-0.25 and 0.25-0.50 m soil layers indicated the following results: 5.2 and 5.6 pH (CaCl 2 ); 31 and 18 g dm -3 of SOM; 42 and 12 mg dm -3 P; 3.1 and 0.5 mmol c dm -3 K; 31 and 24 mmol c dm -3 Ca; 9 and 6 mmol c dm -3 Mg; 77.4 and 53 mmol c dm -3 CEC, respectively.…”
Section: Methodsmentioning
confidence: 99%
“…The relationship carbon/nitrogen (C:N) in trash is approximately 100:1 (Robertson & Thorburn, 2007), and adding this organic material to the soil may cause N immobilization by the microbial biomass (Vitti et al, 2008). Due to the slowness of N mineralization in the trash (Faroni et al, 2003;Vitti et al, 2011), the contribution of this process is not taken into account when managing N fertilizer of sugarcane ratoon (Vitti et al, 2007).…”
Section: Introductionmentioning
confidence: 99%
“…This value is lower than in other crops (between 50 and 70 %) (Cantarella et al, 2007). Studies indicate that the use efficiency of fertilizer N by sugarcane can vary from 20 to 40 % (Prasertsak et al, 2002;Trivelin et al, 2002b;Franco et al, 2008a;Franco et al, 2011;Vitti et al, 2011). This variation and low exploitation can be related to N loss in the soil-plant system, due to ammonia denitrification and volatilization (Trivelin et al, 2002a), leaching (Oliveira et al, 1999) and N gas loss by the aerial part of plants (Franco et al, 2008c).…”
Section: Introductionmentioning
confidence: 99%
“…Nas socas, as respostas à adubação nitrogenada são mais frequentes; entretanto, as diferenças entre as doses aplicadas e a quantidade de N acumulado pela cultura ainda são expressivas. Atualmente no Brasil, são aplicados, em média, 45 kg ha -1 de N na canaplanta e 80 kg ha -1 nas socas, ao passo que o acúmulo de N total nas folhas verdes e secas e nos colmos pode chegar a 260 kg ha -1 na cana-planta (Vitti et al, 2011) e, em média, a 120 kg ha -1 nas socas (Vitti et al, 2008;Baptista et al, 2014).…”
Section: Introductionunclassified