Improved fallow: growth and nitrogen accumulation of five native tree species in Brazil Author Joslin, Aaron Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, USA joslina@uga.edu Author Markewitz, Daniel Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, USA Author Morris, Lawrence A. Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, USA Author de Assis Oliveira, Francisco Universidade Federal Rural da Amazoˆnia, Avenida Perimetral, # 2501, Caixa Postal 917, Bele´m, PA, Brazil Author Kato, Oswaldo Embrapa Amazônia Oriental, Avendia Eneas Pinheiro, # 1, Belém, PA, Brazil text Nutrient Cycling in Agroecosystems 2016 2016-05-19 106 1 1 15 http://dx.doi.org/10.1007/s10705-016-9783-0 journal article 10.1007/s10705-016-9783-0 10116382
Table 4 Diameter at breast height (±1SE) of five native tree species at Year 6 in 2011 planted in a mixed-culture, slash-and-mulch agroforestry system in Eastern Amazonia of Brazil
Treatment 1I. edulisP. multijugaC. odorataC. pentandraS. amazonicum
Letters indicate significant differences (p = 0.05) for DBH between treatments (N = 4), within species 1 Treatments in a two-way factorial design are indicated by fertilization with P + K (PK+) or without fertilization (PK -) and subplot treatment in the presence (I+) or absence (I -) of N-fixing Inga edulis
Diameter at breast height (cm)
PK - I -2.8 (0.3)3.5 (0.5)a8.9 (1.5)a
PK - I+4.2 (0.3)a9.7 (0.8)a2.7 (0.4)1.6 (0.3)a8.0 (2.6)a
PK+ I -4.9 (1.0)7.2 (0.8)b17.1 (0.7)b
PK+ I+9.3 (0.3)b13.4 (1.3)b–10.0 (3.3)b17.1 (1.2)b