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Phytotoxicity of Herbicides to Spring Flowering Bulbs
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Biennial application for two years of nine commonly used turf and ornamental herbicides were evaluated for phytotoxicity to fourteen species of spring flowering bulbs. OH 2 significantly damaged foliage of Anemone ‘Rosea’, Crocus ‘Cream Beauty’, Endymion ‘Blue’, Hyacinthus ‘Ostara’, Iris reticulata ‘Harmony’, Muscari armeniacum, Narcissus ‘Geranium’, Ornithogalum umbellatum, Scilla ‘Spring Beauty’, Triteleia ‘Queen Fabiola’, and the Tulipa ‘Golden Apeldoorn’, ‘Purissima’, and ‘Paul Richter’. Ronstar damaged the foliage of Crocus ‘Cream Beauty’, Crocus ‘Remembrance’, Endymion ‘Blue’, Hyacinthus ‘Ostara’, Iris ‘Harmony’, Muscari armeniacum, Narcissus ‘Geranium’, Ornithogalum umbellatum, Scilla ‘Spring Beauty’, Trietleia ‘Queen Fabiola’, and the Tulipa ‘Golden Apeldoorn’, ‘Purissima’, and ‘Paul Richter’. Muscari foliage was damaged by Balan, Dacthal, Devrinol, Fusilade and Poast. Hyacinthus ‘Ostara’ foliage was damaged by Balan. Anemone ‘Rosea’ foliage was injured by Betasan and Pennant. Tulipa ‘Paul Richter’ foliage was deformed by Devrinol and Fusilade damaged Endymion.
No flower injury was noted from use of Balan, Betasan, Dacthal, Devrinol, Pennant, Fusilade or Poast for two seasons on the 14 bulb species. OH 2 and Ronstardamaged flowers of Crocus ‘Remembrance’, Hyacinthus ‘Ostara’, Iris germanica and I. reticulata ‘Harmony’, Narcissus ‘Unsurpassable’, Ornithogalum umbellatum, Scilla ‘Spring Beauty’, Triteleia ‘Queen Fabiola’, and Tulipa ‘Purissima’ and ‘Paul Richter’. OH 2 damaged the flowers of Crocus ‘Cream Beauty’, Hyacinthus ‘Ostara’, Iris germanica, Iris reticulata ‘Harmony’, Muscari armeniacum, Narcissus ‘Unsurpassable’, Ornithogalum umbellatum, Scilla ‘Spring Beauty’, Triteleia ‘Queen Fabiola’, and Tulipa ‘Golden Apeldoorn’, ‘Purissima’, and ‘Paul Richter’.
Bulb numbers harvested after two years were unaffected by Balan, Betasan, Devrinol, Pennant or Fusilade. Poast and Dacthal reduced bulb numbers of Muscari armeniacum. OH 2 reduced bulb numbers of Crocus ‘Cream Beauty’, Crocus ‘Remembrance’, Hyacinthus ‘Ostara’, Iris reticulata ‘Harmony’, Muscari armeniacum, Triteleia ‘Queen Fabiola’, and ‘Paul Richter’ and ‘Purissima’ tulips. Ronstar reduced the number of bulbs harvested of Crocus ‘Cream Beauty’ and Crocus ‘Remembrance’, Hyacinthus ‘Ostara’, Iris reticulata ‘Harmony’, and Triteleia ‘Queen Fabiola’.
Horticultural Research Institute
Title: Phytotoxicity of Herbicides to Spring Flowering Bulbs
Description:
Biennial application for two years of nine commonly used turf and ornamental herbicides were evaluated for phytotoxicity to fourteen species of spring flowering bulbs.
OH 2 significantly damaged foliage of Anemone ‘Rosea’, Crocus ‘Cream Beauty’, Endymion ‘Blue’, Hyacinthus ‘Ostara’, Iris reticulata ‘Harmony’, Muscari armeniacum, Narcissus ‘Geranium’, Ornithogalum umbellatum, Scilla ‘Spring Beauty’, Triteleia ‘Queen Fabiola’, and the Tulipa ‘Golden Apeldoorn’, ‘Purissima’, and ‘Paul Richter’.
Ronstar damaged the foliage of Crocus ‘Cream Beauty’, Crocus ‘Remembrance’, Endymion ‘Blue’, Hyacinthus ‘Ostara’, Iris ‘Harmony’, Muscari armeniacum, Narcissus ‘Geranium’, Ornithogalum umbellatum, Scilla ‘Spring Beauty’, Trietleia ‘Queen Fabiola’, and the Tulipa ‘Golden Apeldoorn’, ‘Purissima’, and ‘Paul Richter’.
Muscari foliage was damaged by Balan, Dacthal, Devrinol, Fusilade and Poast.
Hyacinthus ‘Ostara’ foliage was damaged by Balan.
Anemone ‘Rosea’ foliage was injured by Betasan and Pennant.
Tulipa ‘Paul Richter’ foliage was deformed by Devrinol and Fusilade damaged Endymion.
No flower injury was noted from use of Balan, Betasan, Dacthal, Devrinol, Pennant, Fusilade or Poast for two seasons on the 14 bulb species.
OH 2 and Ronstardamaged flowers of Crocus ‘Remembrance’, Hyacinthus ‘Ostara’, Iris germanica and I.
reticulata ‘Harmony’, Narcissus ‘Unsurpassable’, Ornithogalum umbellatum, Scilla ‘Spring Beauty’, Triteleia ‘Queen Fabiola’, and Tulipa ‘Purissima’ and ‘Paul Richter’.
OH 2 damaged the flowers of Crocus ‘Cream Beauty’, Hyacinthus ‘Ostara’, Iris germanica, Iris reticulata ‘Harmony’, Muscari armeniacum, Narcissus ‘Unsurpassable’, Ornithogalum umbellatum, Scilla ‘Spring Beauty’, Triteleia ‘Queen Fabiola’, and Tulipa ‘Golden Apeldoorn’, ‘Purissima’, and ‘Paul Richter’.
Bulb numbers harvested after two years were unaffected by Balan, Betasan, Devrinol, Pennant or Fusilade.
Poast and Dacthal reduced bulb numbers of Muscari armeniacum.
OH 2 reduced bulb numbers of Crocus ‘Cream Beauty’, Crocus ‘Remembrance’, Hyacinthus ‘Ostara’, Iris reticulata ‘Harmony’, Muscari armeniacum, Triteleia ‘Queen Fabiola’, and ‘Paul Richter’ and ‘Purissima’ tulips.
Ronstar reduced the number of bulbs harvested of Crocus ‘Cream Beauty’ and Crocus ‘Remembrance’, Hyacinthus ‘Ostara’, Iris reticulata ‘Harmony’, and Triteleia ‘Queen Fabiola’.
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