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SEWAGE SLUDGE AS NITROGEN AND PHOSPHORUS SOURCE FOR CANE-PLANT AND FIRST RATOON CROPS

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Table 1. Chemical characterization of the soil in the experimental area in July/2005
Figure 1. Average cane stalk yield (tonnes of cane per hectare – TCH) of cane-plant in function of the sludge, nitrogen and phosphorous rates.
Figure 2. Average sugar yield (tonnes of sugar per hectare – TSH) of cane-plant in function of the sludge, nitrogen and phosphorous rates.
Table 2. Technical variables of sugarcane at the time of the first harvest (cane-plant), in September/2006, and second harvest (first ratoon), in October/2007

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