—Lancaster Farming, Saturday, September 2, 1972 22 Apple Research Discounts SADH For Suckering Studies were conducted druing the past two years by Dr An thony H Hatch and associates of The Pennsylvania State University in an attempt to control suckering in mechanically topped apple trees using the growth regulator known as SADH (succinic acid-2, 2- dimethylhydrazide) Previous reports indicated that SADH was an effective growth inhibitor of apple trees However, it has the disadvantage of not only reducing shoot length but also fruit size The findings were announced August 31 at the an nual meeting of the American Society for Horticultural Science m St Paul, Minn Results mcirated that the same amount of shoot control could be obtained by spraying the tops as by spraying the entire tree There was a significant fruit size reduction even among limbs and In the compicker race Superpickers finish first and first. No. 1 among 1-row pickers the 1-row pull Superpicker No. 1 among 2-row pickers the 2-row pull Superpicker for wide or narrow rows Optional shelling and grinding units K\ci\ new Idea* pn kt i has t In* famous Supei pn kei tapaiitN gatheiing head and snapping lolls 'flu- long, tapemd floating points that lift I hose down and tangled stalks 1 iash mils Heateis All the things that make a Supei pit kei ,» supei pitkei Stop in and ask ioi a look see And ask too, about thed-mw wideoi naimw Supei pickei 01 the e\( hisue d-mw Supeishellei Its cage shel lei inteuhanges on tuu tun pull Supeipukeis as well Hememhei In the pickei i<ue Supei pukeis aie hist and fust There’s a good idea >W»w behind every New Idea A.L. HERR&BRO. Quarryville KINZER EQUIP. CO, Ku/er LANDIS BROS., INC, Lancaster N. G. HERSHE Y & SON Manheim ROY H. BUCK, INC. Ephrata, R D 2 branches not sprayed with SADH when compared to untreated trees The size reduction, however, was significantly less than trees completely sprayed with SADH Mechanical topping of apple trees to maintain them at a manageable height is a common practice in several Pennsylvania orchards However, profuse suckering shades the area below, producing inferior apples Determining how SADH affects the natural hormone balance of the tree could furnish a clue to better understanding the processes of fruit ripening and fruit drop m apple trees A couple of research papers have indicated that SADH was not mobilized within the tree It was envisioned that by applying the material to the top 2 feet of the tree, sucker growth control could be achieved without af- LONGENECKER FARM SUPPLY Rheems CHAS. J. McCOMSEY & SONS Hickory Hill, Pa. STOLTZFUS FARM SERVICE Cochranville, Pa A. B. C. GROFF, INC. New Holland Yorkshire Show The South Carolina Yorkshire Club Invitational Show and Sale was held August 18 at Orangeburg Fairgrounds, Orangeburg, South Carolina The Pennsylvania Yorkshire breeders participating were Real Farms, Tipton, and Leon Arnold, Lebanon. Real Farms exhibited the second place senior open gilt and the 15th and 16th place senior boars. Arnold exhibited the seventh place bred gilt, thefourth and 17th place senior open gilts and the seventh and tenth place senior boars. Twenty head of bred gilts averaged $222 50, 24 head of open gilts averaged $132.90, and 24 head of boars averaged $271.87. Ag Workers Should Use Head Gear Farm workers should wear protective head gear while performing such jobs as con struction, demolition, and maintenance work; repairing machinery and vehicles, operating machinery in or chards, shuttling in and out of buildings with low doors; blasting or any other jobs where there is a danger of flying ob jects; felling or trimming trees, fighting fires or burning off land; and electrical work. This is the advice of Extension agricultural engineers at The Pennsylvania State University. feeling fruit size. Thus far, this has not been the case. These results, plus others such as fruit drop control and fruit firmness, indicate that some mechanism is triggered which is sent throughout the lower por tions of the tree to affect fruit size, firmness, and premature frop R & T TRACTOR PULL COMPUTEIY LOCAL TRACTOR Weigh in 8 A.M, CLASSES- Stock 5,000 lbs., 7,000 lbs., 9,000 lbs 12.000 lbs. Super Stock 5,000 lbs., 7,000 lbs., 9,000 lbs., 12,000 lbs., 15,000 lbs. GARDEN TRACTOR PULL CONTEST SATURDAY, SEPT. 23 1:00 P M Classes - 800 lbs, 1000 lbs., 1200 lbs, 1400 lbs, 16,000 lbs 52.00 entry fee per pull Fruit Tree Study Shows Value of Painted Trunks Trunks of deciduous stone fruit trees should be painted with a white exterior latex paint to minimize the hazard of winter sun scale, it was suggested recently by a Penn State scientist during the 69th annual meeting of the American Society for Hor ticultural Science m St. Paul, Minn. Studies of winter sun scald of stone fruit trees were described by Dr Anthony H Hatch, of The Pennsylvania State University, who carried out the experiments in association with Dr C. Mar shall Ritter and Dr. J. David Martsolf all with the Depart ment of Horticulture at Penn State. Sun scald injury, as manifest by bark splitting, occurs on the southwest side of tree branches and trunks. It generally appears after cold, calm, and bright sunny days. Pomologists for many years have felt that high temperatures in cambium layers exposed to the sun will induce cell activity during the day, making cells THIS IS THE ALFALFA FOR HIGH YIELD W.L. 303 W.L. 210 ALSO OTHER ALFALFAS SEED WHEAT BARLEY RED COAT BORSON ARTHUR WONG PENNRAD REIST SEED CO. Mt Joy, Pa. Ph. 653-4121 (Since 1925) ASSOCIATION WILL HOLD THEIR THIRD SATURDAY, SEPTEMBER 16, 1972 Pull conducted according to State Tractor Pull Rules. FOR INFORMATION CONTACT Harold Rlneer, President Phone 717-656-6128 KINZER, PENNA. susceptible to injury with the sudden drop to low temperatures after sunset. Sun scald is not lethal itself but subsequent in fection of damaged tissue can lead to death of the tree. During a 48-hour period in February when conditions were right for sun scald, Dr. Hatch and associates monitored ther mocouples under the bark of nectarine tree trunks painted white—while some were left unpainted for comparison. Temperatures reached 64 to 68 degrees F. during the day warm enough to induce cell activity—on the south side of unpainted trunks. Temperatures of painted trunks, on the other hand, remained near 30 degrees F., near that of the air. The temperatures dropped to -4 degrees F. during the night, subjecting the unpainted trunks to a drop of about 70 degrees. Try A Classified Ad If Pays! PULL Ist Pull 10:00 A.M. Modified 7,000 lbs. Open 9,000 lbs. $lO.OO entry fee per pul) $2,200.00 Purse
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