Control of Phytophthora fruit rot is dependent on an integrated
system of both cultural and chemical control measures. This involves
growing papaya on well-drained soils, the removal of
infected fruit from the field, the establishment of grassed areas
between the rows of papaya to reduce inoculum splash to aerial
parts of the plant, and regular foliar spray applications with copper
hydroxide (Chay-Prove, 2000). Copper hydroxide has been used at
the rate of 100e150 g a.i./100 L but according to growers the results
obtained with this chemical at that rate of application are always
disappointing (J. Zappala, personal communication). There are
presently no other chemicals registered for the control of Phytophthora
fruit rot of papaya. Although all papaya cultivars are
affected by this disease, it is the much sought after red-fleshed Solo
types which are most susceptible (Chay-Prove, 2000).
Control of Phytophthora fruit rot is dependent on an integratedsystem of both cultural and chemical control measures. This involvesgrowing papaya on well-drained soils, the removal ofinfected fruit from the field, the establishment of grassed areasbetween the rows of papaya to reduce inoculum splash to aerialparts of the plant, and regular foliar spray applications with copperhydroxide (Chay-Prove, 2000). Copper hydroxide has been used atthe rate of 100e150 g a.i./100 L but according to growers the resultsobtained with this chemical at that rate of application are alwaysdisappointing (J. Zappala, personal communication). There arepresently no other chemicals registered for the control of Phytophthorafruit rot of papaya. Although all papaya cultivars areaffected by this disease, it is the much sought after red-fleshed Solotypes which are most susceptible (Chay-Prove, 2000).
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