Phenotypic Correlations and Integration of Nitrogen, Potassium and Press Mud Fertilizers in Relation to Sugarcane Yield and Quality

Document Type : Original Article

Authors

1 Sugar Crops Research Institute; Agricultural Research Center, Egypt

2 Sugar Crops Research Institute, Agricultural Research Center, Giza 12619, Egypt.

Abstract

The present work was carried out at Mallawi Agricultural Research Station, El-Minya Governorate, Egypt (latitude of 28° 10' N, longitude of 30° 75' E and altitude of 55 m above sea level) in 2017/2018 and 2018/2019 seasons to study the influence of nitrogen, potassium as inorganic fertilizers and press mud as an organic fertilizer on yield and quality of sugarcane variety G.2003-47 (Giza 3). The field experimental work was carried out in a randomized complete blocks design in a split-split plot arrangement in three replications in both seasons. The results showed that the application of 4 tons of press mud/fed significantly increased plant length, diameter, number of millable canes/fed, stalk weight, cane and sugar yields/fed, as well as brix, sucrose and sugar recovery percentages in both seasons. Increasing nitrogen levels from 150 up to 210 kg N/fed resulted in a significant increase in stalk height, diameter, weight, number of millable canes cane and sugar yields/fed, as well as brix, sucrose, purity and sugar recovery percentages in both seasons. Applying 48 kg K2O/fed resulted in a significant increase in cane length, diameter, number of millable canes, stalk weight and cane and sugar yields/fed, as well as brix, sucrose and sugar recovery percentages in both seasons. The correlation analysis showed that the stalk diameter, number of stalks per meter, and weight of the cane contributed most to cane yield at the harvest.

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