Tuesday, May 15, 2012

Study of Fluazifop Buthyl and Glyphosate Potassium as ripeners on PS 951 cane variety

Suyoto Hadisaputro *), Pudjiarso dan Catur Okariana
(Indonesian Sugar Research Institute Jl.Pahlawan 25 Pasuruan 67126)


Cane ripeners have been comercially used in Indonesian sugar industry. Recently, there are three new chemical products, such as: Fluazfop Buthyl 150 g/l product (FB-1), Fluazfop Buthyl 125 g/l product (FB-2) and Glyphosate Potassium 620 g/l product (GP), that potentially can be used to spur maturation of cane. In order to study a performance of the three chemicals as cane ripeners, at the Indonesian Sugar Research Institute (ISRI) Pasuruan was conducted efication research with use PS 951 as a cane variety tested. In this experiment was also studied Isoprophylamine Glyphosate (IG) as a standar recommended ripeners. The parameter observed were: (1) maturation factor (MF) and (2) components of juice qualities of cane, such as: brix, pol, purity, and sucrose content, (3) cane yield, (4) toxicity rate of cane to chemicals tested, and (5) growth performance of ratoon crop (RC). The results of the experiment showed that FB-1, FB-2 and GP were able to spur the maturation and increase juice quality of PS 951 cane variety tested, and it were similar with showed by IG on 0,80 l product/ha. All the chemicals tested, include IG, caused clorotic symptom on leaves and dead of growth point but it were not reduce the cane yield. Moreover, the poisoning symptoms on PC were not depressed the cane growth performance of RC. The significantly effect of the three chemicals tested as ripeners were found at 4-5 weeks after treatment (wat) and the effective dosage aplications were 0,60-0,90 l product/ha.

Key words: Cane ripeners, Fluazifop butyl 150 g/l product (FB-1), Fluazifop butyl 125 g/l product (FB-2), Glyphosate Potassium (GP), Isopro¬phyl¬amine glyphosate (IG), PS 951