02176naa a2200325 a 450000100080000000500110000800800410001902200330006002400390009310000140013224501250014626000090027130000100028050001230029052010720041365300280148565300180151365300180153165300250154965300160157465300160159070000160160670000170162270000130163970000160165270000180166870000180168670000210170477301250172510616682021-02-12       2021    bl uuuu     u00u1 u    #d  a0001-3765, Online: 1678-26907 a10.1590/0001-37652021201808602DOI1 aCARRA, B.  aPlant growth regulators to increase fruit set and yield of 'Rocha' pear trees in Southern Brazil.h[electronic resource]  c2021  a16 p.  aArticle history: Manuscript received on July 5, 2018 / Accepted for publication on June 6, 2019. Published online 2021  aAbstract. The aim of this study was to evaluate the effect of different aminoethoxyviniglycine (AVG), thidiazuron (TDZ) and prohexadione calcium (P-Ca) rates sprayed at different timing on fruit set, yield, and fruit quality of 'Rocha' pear trees in different climatic conditions of Sothern Brazil. The study was performed in two commercial orchards located in Sao Joaquim, SC, (2015/2016) and Antonio Prado, RS (2016/2017). Plant material consisted of 'Rocha' pear trees grafted onto Pyrus calleryana and quince roorstock 'BA29' in Sao Joaquim and Antonio Prado, respectively. Treatments consisted of AVG, TDZ and P-Ca sprayed at different rates and timins. Truk cross-sectional area increase, fuit set, thinned fruit length, fruit diameter, L/D ratio, seed number, flesh fimmess, and soluble solids content were assessed. Fruit set and yield were consistently increased by AVG in all experiments. Fruit set was not affected by P-Ca 100 mg L-1 Sprayed at full bloom + 7 days after full bloom and TDZ 10mg-1 at full bloom. Fruit size was consistently incrased by TDZ.  aAMINOETHOXYVINILGLYCINE  aFRUIT QUALITY  aFRUITLET DROP  aPROHEXADIONE CALCIUM  aSEED NUMBER  aTHIDIAZURON1 aPASA, M. S.1 aABREU, E. S.1 aDINI, M.1 aPASA, C. P.1 aCIOTTA, M. N.1 aHERTER, F. G.1 aMELLO-FARIAS, P.  tAnais da Academia Brasileira de Ciências, 2021, vol. 93gn. 3 e20180680, Pages 1-16. Doi: 10.1590/0001-3765202120180860