Dimethyl sulfoxide which stimulates vegetative growth
Dimethyl sulfoxide which stimulates vegetative growth text is an extract from https://patents.google.com/patent/US3361555A/en
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The amount of dimethyl sulfoxide which stimulates vegetative growth is generally small, and is generally at least about from 20 p.-p.m. to 500 ppm. The property of stimulated vegetative growth is demonstrated with amounts of dimethyl sulfoxide of up to about 3% by weight. Above about 3% by weight of dimethyl sulfoxide in an environment containing microorganisms, a biocidal or biostatic effect is obtained. Dimethyl sulfoxide stimulates the metabolic process of microscopic plants cultured under both aerobic and anaerobic conditions, although it appears to give superior results in aerobic cultures.
EXAMPLE 6 Stimulation of plant growth Plantings of Zinnia, marigold, bean, corn and cucumher were made in three natural soil types:
(1) High humus soil (2) Sandy loam; and (3) River sand Replicated flats were watered with distilled water containing O, 1, 5 and 10 ppm. of dimethyl sulofxide. Each test received the same volume of water fed by bottom irrigation once a week for six weeks, no fertilizers were added.
All the plants in flats receiving dimethyl sulfoxide in the water showed a good response and since the soil was not sterilized the few weeds present also showed a growth response. The optimum level of dimethyl sulfoxide in this greenhouse testing was 5 ppm. At the end of 6 weeks, the plants from these flats averaged more height and top growth weight. It is believed that dimethyl sulfoxide enhanced root assimilation of nutrients and/or production of growth hormones to induce faster growth.
EXAMPLE 8 Improvement in fruit yield Early Milton prunes were treated with dimethyl sulfoxide both by spraying and injection. The concentration of dirnethyl sulfoxide in the spray was 1,000 cc. per 100 gallons and the concentration of dimethyl sulfoxide in the injection was 10 cc..per gallon. Six trees served as the control check, 6 trees received the dimethyl sulfoxide spray treatment and 6 trees received the dimethyl sulfoxide injection. The average yield in pounds per tree of the control trees was 54.1, the average yield in pounds per tree for the dimethyl sulfoxide spray treatment was 60.6 pounds per tree, and the average yield in pounds per tree for the dimethyl sulfoxide injected trees was 63.8.
tion and emergence should be obtained. The beets are thinned around the end of May. One group of beets serve as a control and are not treated except with normal watering. A second group of beets are sprayed at a level of 100 gallons of water per acre at 100 p.s.i., the water containing l0l5 ppm. dimethyl sulfoxide. The latter treatment is repeated at 10-day intervals during the growing season, cornmenrcing about the end of June. The gross sugar yields of the control beets is about 5,000 pounds per acre. The gross sugar yield of the beets treated with dimethyl sulfoxide shows an increase of about 250 to 300 pounds per acre over that of the controls, and the sugar content of the DMSO treated beets was 0.28% higher, the sugar content of the control being 14.90% and DMSO treated being 15.18%. Similar increases in sugar yield may be obtained with DMSO treatment of sugar cane.
EXAMPLE Pre-emergent treatment of plants Potato tubers, cut for planting, are treated with an aqueous solution of DMSO, the concentration being 2 gallons DMSO in 98 gallons of water. This IOU-gallon batch is suflicient to treat enough tubers to plant 10 acres. The treatment is elfected by dipping the tubers into the DMSO solution. The DMSO treatment enhances suberization, stimulates shoot development and causes the parent tubers to remain intact for many weeks after planting, adding vigor to the developing plant. More sprouts per tuber piece is generally noted, and this is associated with high crop yield. Similar findings were noted with dahlia tubers, and a similar DMSO treatment may be given to various bulbs, pips, croms and rhizomes with similar enhancement of growth.