INFLUENCE OF NPK ON ADVANCED PROMISING CLONES OF SUGARCANE AT TWO DIFFERENT AGRO-ECOLOGICAL ZONES OF BANGLADESH

Abstract

The field experiments were conducted to evaluate the effects of varying levels of N, P and K on three promising sugarcane clones and one standard variety at High Ganges River Floodplain (AEZ 11) and Old Himalayan Piedmont Plain (AEZ 1) soils of Bangladesh. Results revealed that sugarcane clones and N and K significantly differed with yields, yield attributes of cane in both the agro-ecological zones but P fertilization effects were not differed significantly. N application increased cane yield 89% and 30% over control at High Ganges River Floodplain (AEZ 11) and Old Himalayan Piedmont Plain (AEZ 1) soils, respectively without effecting sucrose content. P and K application had significant effect to increase cane yield and recoverable sugar. In order to yield potentiality, the studied clones followed the order: I 486-99 > I 139-98 >I 82-98 at High Ganges River Floodplain and I 486- 99 > I 82-98 > I 139-98 at Old Himalayan Piedmont Plain. It was found that clone I 486-99 with 200 kg N, 50 kg P, 60 kg K ha-1 at High Ganges River Floodplain (AEZ 11) and 120 kg N, 35 kg P, 100 kg K ha-1 at Old Himalayan Piedmont Plain (AEZ 1) soils produced better yield because of its inherent capability and adaptability in two agro-ecological zones of Bangladesh.