02117naa a2200241 a 450000100080000000500110000800800410001902200140006002400320007410000220010624501260012826000090025452013590026365000260162265000180164865000090166665000220167565300280169770000330172570000210175870000190177977300770179820912472018-05-08       2018    bl uuuu     u00u1 u    #d  a1991-637X7 a10.5897/AJAR2017.128962DOI1 aMARQUES, P. R. R.  aGas exchange and yield of Prata-type banana plants with fertilizer sources for organic management.h[electronic resource]  c2018  aThe aim of this paper is to evaluate gas exchanges and yield of Prata-type banana plants subjected to fertilizer sources for organic management in soil with improved fertility. Two cultivars (?Dwarf-Prata? and ?BRS Platina?), 5 K2O rates (0, 200, 400, 600, and 800 kg ha-1 year-1) supplied by cattle manure and Naturalplus® rock powder, and 2 evaluation times (8:00 am and 2:00 pm) were arranged in a randomized complete block design with 15 replicates. As for production, a randomized block design with 4 cycles and 3 replicates was used. In fertile soils, gas exchanges are little influenced by fertilization. Fertilization with increasing application rates determines a quadratic variation in stomatal conductance and internal CO2 concentration in ?Dwarf-Prata? and a linear variation for leaf temperature and instantaneous water-use efficiency in ?BRS Platina?. Quantum efficiency of photosynthesis is higher at 8:00 am, whereas at 2:00 pm, for leaf temperature. Photosynthesis and leaf transpiration directly correlate with stomatal conductance, instantaneous water-use efficiency, and leaf temperature, while instantaneous water-use efficiency and photosynthesis inversely associate with transpiration and leaf temperature. Cattle manure and rock powder fertilizations do not increase yield in banana plants grown in soils with improved fertility.  aEconomic productivity  aGreen manures  aMusa  aSoil productivity  aPhysiological variables1 aSERGIO LUIZ RODRIGUES DONATO1 aSÃO JOSE, A. R.1 aROSA, R. C. C.  tAfrican Journal of Agricultural Researchgv. 13, n. 5, p. 272-280, 2018.