The Times from San Mateo, California • Page 15

The Times. San Mated. Calif. 1 1 Friday. June 19.

1964 Spider Mites Summer Problem Injury to Trees Found By a Water Specialist SAVE 41c ON EACH OF THESE LARGE 1 GALLON PLANTS Gordon Ft. Bradford, soil and sharply tapping the branch uie levels ujujiu. 11 is tuu ceivable that livestock might be I California's total citrus acreage shows symptoms of toxicity poisoning) attributable at least Dislodged mites, falling on the water specialist at the University of California, Riverside, conducted a survey of 400 wells in par to excess lithium. At least 10 areas of California throughout California and found Picture Clues to Trouble The yearly battle for a better lawn is at hand. The annual struggle with weeds and grass diseases presents many problems as home owner and turf maintenance personnel struggle toward a greener turf.

This year, as fhe home owner's mower buzzes across burned, bald and buggy spots he will be able to identify quickly his lawn troubles if he is carrying pictures of these problems in his pocket. Such photos are contained in the new Cornell University pub that 25 per cent of them con PYHACAKTHrS SRAWRI BOTIIE BRUSH STAR JASMIKt PFITIH JUNIPERS CREEPING ROSEMARY TAW JUNIPERS r. si. 88 have wells containing lithium in excess of one tenth part per mil $1.29 tained enough metal lithium) Watch your ornamental evergreens, especially such species as juniper, spruce and yew, for spider mites. It is during hot summer weather that these pests are most active, and often their presence is not noticed until severe damage has occurred, Spider mites, which are closely related to spiders and ticks 2nd are not true insects! feed by inserting their beat like mouth parts into the leaves and lion.

Bradford saad. These are to injure citrus, avocados, and the Otay area soutli of San paper, appear as moving specks of dust as they crawl over the white surface. In severe infestations, silken threads spun by the mites may be found on the plant. Plants should be inspected for mites at least every three or four weeks during the summer. When even a few mites are found the National Arbor ist Association advises applying control sprays to prevent a Diego; the Jueumba area near grapes.

The problem is of sufficient importance, Bradford said, that the Mexican border; the narlh of San Diego; Ventura state water quality agencies and Santa Harbara and north ward toward Santa Maria; the should consider making routine Mendota area west of Fresno analyses for lithium. He snid sucking sap from the inner tis The Glosler area of Mr production and use ot lithium build up in the population of harmed by eating grasses containing several thousand parts per million of lithium," he said. "But this problem has not been The lithium problem may become most serious in desert areas, being developed for new citrus and grape acreage, Bradford believes. "But it is not restricted to California. Probably the same situation exists in ail oft he world's arid areas," he said.

"At one tenth part per million, lithium causes mottling of leaves; at two tenths, severe symptoms of lithium 'burning' appear; anything higher than this usually results in the slow death of the tree. "Roughly 100 of the 400 hundred well water samples examined, representing the total well water resources of Clifornia, contained more than 500 parts per million of lithium." Brad iave; Tuolumne Meadows at compounds have increased LARGE BASKET ORTHO GRO FUCHSIAS sic FERTILIZER sale 1 Gal. 4.98 3.49 2nd Gal .01 3.. 9.49 SAVE 4" Yosemite Park; Chuckwalla' these pests. Albough a few general purpose insecticides will control sues.

This causes drying of the foliage and discoloration ranging from pale yellow to brown. Tiny to the point of invisibility while on the plant, mites can best be deteced by hold Valley; Death Valley and northwest to Mono Lake. lication "Picture Clues to Lawn Troubles," prepared by Norman J. Smith, associate agricultural greatly in the last la years, nuclear shielding, for rocket fuels, explosives, ceramics, plastics, tanning formulations, air condi mites to a certain 'extent, formulations designed specifically agent, Nassau County, and Prof John F. Coroman, floricultural tioning systems, lubricating ing a sneet or wmte paper to destroy mies are generally recommended.

ist, New York State College of greases, detergents, and many other applications. Deaieam a ronage cluster ana Agriculture. "These potential sources of lithium contamination of water LOUVriE DOORS SHUTTERS LOW, LOW PRICES Beautiful Vjnosany, Fully inrantt Thousands Slock Slits Heady to Go in Our San Francisco Factor? AEso Cuslcm Caear and Pino SHOJIS WOVEN WOODS Painting Installing CHARLES D. WALKER Mfg. Co.

Weekdays In Sat. 9 hi Free Parking 139 131h 5., S. F. HE 1 11.12 Ecrwecn South Van Nasi nd Plm This small, hip pocket size booklet shows, in. color, some Carlinont Nursery Opn 8:30 lo 6:00 7 Dnyi Free Deliveries of $5 ot Man 2029 RALSTON BELMONT PHONE LY 1 6845 BankAmtrictird Wlcon of the common problems of un resources should not be disregarded," Bradford declared.

Bradford said human heings would not be harmed by drink healthy lawns. Each full color picture is accompanied by a ford said mat Five per cent of ing water containing lithium at description of the symptoms. The bulletin does not include specific recommendations for OUR 18 YEAR control of insects, diseases, or weeds. County agricultural agents and most nurserymen can supply the latest recommen 3 Professional Rug; Cleaning I dations which are brought up to date as new reaserch results become available. The booklet, prepared as an persons in charge of park golf turf as well as the home owner, is available form the Mailing Room, Stone Hall, Cornell University, Ithaca, N.Y., for 75 cents.

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uirrw nive nt.c rmniv 4ii A CllllnAV 111 tn 1 FIEE oehveit 1 I CLUB VIEW APARTMENTS nun. uhio iu rmuni a ounurii iu iu onmi ARCHITECTS JAMES GARDINER. AH BUILT BY HARVIS CONSTRUCTION WC. 935 EL CAMINO REAL SOUTH SAN FRANCISCO From San Francisco Phone 761 1957 From the Peninsula Phone 583 7538 Us Thc l..