. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 938 Rural School Leaflet. Bindweed to send stems or leaves above ground. In cultivating a field containing bindweed, one should be careful to avoid dragging pieces of the roots from place to place on the tools. The weed may be widely spread in this way. Pigweed, or redroot.— Nearly every boy and girl knows this weed. It probably takes its name from
. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 938 Rural School Leaflet. Bindweed to send stems or leaves above ground. In cultivating a field containing bindweed, one should be careful to avoid dragging pieces of the roots from place to place on the tools. The weed may be widely spread in this way. Pigweed, or redroot.— Nearly every boy and girl knows this weed. It probably takes its name from the fact that it is so much relished by pigs. The weed lives only one year, yet it produces an enor- mous number of small, shiny, black seeds. It may be distinguished from almost all other weeds by its rosy pink root, somewhat resembling a beet. The garden cockscomb is a near relative of pigweed; the seeds of the two plants are much alike. Pigweed is very persistent in cornfields and in other cultivated crops. It is almost sure to appear after the last cultivation of corn. It grows tall and rank, takinp; from the soil moisture and plant food that are needed by useful plants. The only way to control it is by persistent cultivation and hoeing. The straggling weeds may be removed by hand pulling. Canada thistle.— This plant is too well known to need description. It spreads by means of seeds carried by the wind or sown with clovers, grasses, or oats. A cultivated crop that is carefully tilled helps to de- stroy it. It can be destroyed by mowing twice a year, in June and August. It should not be allowed to blossom. If the plants are not too numerous they may be cut off below the surface of the ground and a spoonful of salt put on the fresh cut. If persisted in as often as they appear, this method is usually effective. Wild carrot.— Wild carrots do not spread from the roots, but they produce a great number of seeds. These seeds have been known to live in the ground several year
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