. Fig. 15.—The narcissus stem nematode, with young worms and eggs. (Enlarged nearly 150 times.) addition of commercial formaldehyde (formalin) to the hot water at the rate of 1 pint to 25 gallons of water. It is advisable to try this first on a small scale before treating large numbers of bulbs. Dipping should be done within 2 to 5 weeks from the time of digging the bulbs, the interval being longer the earlier in the season the bulbs are dug. The bulbs may be planted at any time after treatment. If more than a day or two elapses before planting, they should be spread out and thoroughly dried.
. Fig. 15.—The narcissus stem nematode, with young worms and eggs. (Enlarged nearly 150 times.) addition of commercial formaldehyde (formalin) to the hot water at the rate of 1 pint to 25 gallons of water. It is advisable to try this first on a small scale before treating large numbers of bulbs. Dipping should be done within 2 to 5 weeks from the time of digging the bulbs, the interval being longer the earlier in the season the bulbs are dug. The bulbs may be planted at any time after treatment. If more than a day or two elapses before planting, they should be spread out and thoroughly dried. Com- mercial growers who are raising bulbs for sale should get in touch with their county agricultural commissioner or state department of agricul- ture for further details and regulations concerning treatment for nema- tode and other pests. NASTURTIUM Spotted Wilt.—Affected plants are stunted, the leaves crinkled and de- formed and marked with yellow spots (fig. 16). This disease, caused by a virus, attacks many kinds of plants. The nasturtium is a common host
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Keywords: ., bo, bookcentury1900, booksubjectflowers, booksubjectplantdiseases
