TY - JOUR ID - TI - EFFECT OF GROWTH REGULATORS AND HERBICIDES ON SUGAR YIELD , QUALITY AND ATTENDANT WEEDS OF SUGARCANE Saccharum officinarum L. GROWN IN DHULUIYA REGION. AU - N.F. Almubarak AU - F.T. AL- Chalabi PY - 2015 VL - 7 IS - 1 SP - 16 EP - 29 JO - Diyala Agricultural Sciences Journal مجلة ديالى للعلوم الزراعية SN - 20739524 23108746 AB - Field experiments were carried out on sugarcane Saccharum officinarum L.in the fields of the general company for industrial crops, Dhuluiya (within thecentral region of Iraq) to study the effect of some plant growth regulators andherbicides, added at the beginning of tillers stage, in Sugar yield , quality andattendant weeds of sugarcane (Variety: Co196). Split Plot Design was used withfour replications, the main plots included herbicides 2, 4-D, bentazone and acontrol treatment (without herbicide). Plant growth regulators GA3,daminozide, mefluidide and control treatment (without PGR) was included insub plots . The results indicated that the use of mefluidide with 2,4-D has ledto highest decrease in weed density with achieve highest percentage of control(80.61 and 76.60 %) for both years respectively , while use of GA3 alone led tohighest increase . it was found that the use of GA3 with 2,4-D has led to highestincrease in percentage of sucrose ( 11.97 and 13.79 % ) for both yearsrespectively ,while effect of GA3 alone shows highest increase in Brix(16.83and 15.98 %) for both years respectively , So that the use of GA3 with 2,4-D ledto highest increase in Purity (83.41 and 83.91 % ) for both years respectively,while use of daminozide treatment led to highest decrease . The interactioneffect of mefluidide with 2,4-D treatment caused highest increase in sugar yieldwith an increase 34 and 31 % for both years respectively .

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