01981naa a2200241 a 450000100080000000500110000800800410001910000320006024501150009226000090020750001680021652010740038465000180145865000100147665000130148665300210149965300240152065300390154470000190158370000190160270000250162177300930164619844802017-07-10       2013    bl uuuu     u00u1 u    #d1 aROSSATO JUNIOR, J. A. de S.  aPopping expansion and yield responses of popcorn cultivars under different row spacings and plant populations.  c2013  aTítulo em português: Capacidade de expansão e produtividade de cultivares de milho?pipoca sob diferentes espaçamentos entre as linhas e população de plantas.  aThe objective of this work was to evaluate the agronomic traits and the popping expansion index of three Brazilian popcorn cultivars under different row spacings and plant populations. The trials were performed during two crop seasons, under field conditions. The experimental design used was a randomized complete block, in a split‑split plot, with 27 treatments and four replicates. Treatments were represented in a triple factorial arrangement: three row spacings (0.40, 0.60, and 0.80 m), three plant populations (40,000, 60,000, and 80,000 plants per hectare), and three popcorn cultivars (IAC‑TC 01, IAC 12, and Zelia). The increase in plant population causes a reduction in the number of grains per ear, lower prolificacy, and grain weight loss. Cultivar grain yield is affected by row spacing and popcorn plant population. Cultivar IAC 12 shows highest grain yield under row spacings of 0.40 and 0.60 m and plant population between 60,000 and 80,000 plants per hectare. The popping expansion index is not affected by row spacing or plant population.  aPlant density  aMilho  aZea Mays  aArranjo espacial  aDensidade de planta  aÍndice de capacidade de expansão1 aCAZETTA, D. A.1 aBARBOSA, J. C.1 aFORNASIERI FILHO, D.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 48, n. 12, p. 1538-1545, dez. 2013.