01980naa a2200241 a 450000100080000000500110000800800410001910000200006024501270008026000090020750001400021652011400035665000280149665000170152465000140154165300270155565300230158270000160160570000170162170000170163870000230165577300600167821095512019-08-20       2019    bl uuuu     u00u1 u    #d1 aMEGDA, M. X. V.  aAmmonium chloride as an alternative source of nitrogen for sugarcane during two consecutive cycles.h[electronic resource]  c2019  aTítulo em português: Cloreto de amônio como fonte alternativa de nitrogênio para cana-de-açúcar durante dois ciclos consecutivos.  aThe objective of this work was to evaluate the effect of the application of ammonium chloride as a nitrogen source for sugarcane (Saccharum sp.) on the development of the crop?s shoot and roots during two consecutive cycles. The experiment was conducted on a Typic Hapludox in the first and second sugarcane ratoons. The treatments consisted of four N doses (50, 100, 150, and 200 kg ha-1) applied as ammonium chloride (NH4Cl), besides a control, without the application of N. The increase in the NH4Cl dose increased in up to three times soil electrical conductivity in the layer of 0.0?0.2 m, with a consequent increase in the concentration of chlorine in leaves. In the second cycle, the contents of chlorine increased in 1,900 mg kg-1 in the leaf with the application of 200 mg kg-1 NH4Cl, when compared with the control. In the first cycle, the application of NH4Cl doses above 200 kg ha-1 N promoted a decrease in shoot productivity. In both cycles, there was no effect of the NH4Cl doses on root dry matter. High doses of NH4Cl, in consecutive sugarcane cycles, result in a decrease in the productivity of stalks for processing.  aElectrical conductivity  aRoot systems  aSaccharum  aNitrogen fertilization  aStalk productivity1 aMARIANO, E.1 aLEITE, J. M.1 aMEGDA, M. M.1 aTRIVELIN, P. C. O.  tPesquisa Agropecuária Brasileiragv. 54, e00329, 2019.