@article{Liu:261593,
      recid = {261593},
      author = {L. C. Liu  and J. González-Ibáñez  and Megh R. Goyal},
      title = {Weed Competition in Transplanted Sweet Peppers},
      address = {1984-10-21},
      number = {1975-2017-3521},
      pages = {3},
      year = {1984},
      abstract = {Two field experiments were conducted in 1983-84 at the  Fortuna Research and Development Center, Puerto Rico, to  determine the economic threshold of pigweed (Amaranthus  dubius), jungle rice (Echinochloa colonum) and horse  purslane (Trianthema portulacastrum) and their critical  period of competition in drip irrigated peppers (Capsicum  annuum L. var. Cubanelle). Pepper seedlings were 42 days  old at transplanting. In the economic threshold study, weed  populations were adjusted to 0, 2, 5, 10, 20, 40, 80 or 120  plants/m2. In the critical period study, weeds were allowed  to grow for 0, 12, 24, 36, 48 or 60 days after  transplanting and were kept free until harvest. The  economic threshold was found to be 2 to 5 plants/m2 for  pigweed; 5 to 10 plants/m2 for jungle rice; and 20  plants/m2 for horse purslane. The critical period of weed  competition ranged from 24 to 36 days.},
      url = {http://ageconsearch.umn.edu/record/261593},
      doi = {https://doi.org/10.22004/ag.econ.261593},
}