Agronomic Characters, Productivity and Nutrient Contents of Sugarcane (Saccharum officinarum L) Affected by Nitrogen
Titel:
Agronomic Characters, Productivity and Nutrient Contents of Sugarcane (Saccharum officinarum L) Affected by Nitrogen
Auteur:
Maqbool Akhtar M. Ehsan Akhtar Khurram Bashir Shahid Rafiq Ch
Verschenen in:
Pakistan journal of biological sciences
Paginering:
Jaargang 3 (2000) nr. 11 pagina's 1877-1879
Jaar:
2000
Inhoud:
A field experiment was conducted to study the effect of various nitrogen levels (0, 75, 150 and 225 kg ha-1 ) on agronomic characters, productivity, maturity and nutrient contents of sugarcane at the National Agricultural Research Centre Islamabad during 1996-98. All the treatments were given a constant dose of 120 kg ha‾1 of P2O5 and 150 kg ha‾1 of K2O. Early stalk population increased as the N dose was increased. Maximum number of tillers per hectare were found at 225 kg N ha‾1 at all growth stages. Similarly at harvest, millable canes per hectare were the maximum (139.7 thousands) at 225 kg N ha‾1. Stalk height increased significantly as the N levels were increased and it was the maximum (264.67 cm) at N level of 225 kg ha‾1. Nitrogen also increased stalk girth significantly. Brix percentage was similar at early maturity stages at all N levels, however, at harvest it was significantly lower in N applied plots than the control. Cane yield increased significantly with increasing N levels with the maximum (149.4 t ha‾1) at 225 kg N ha‾1. Although sugar recovery was maximum (11.8 %) in the control plots but it was statistically similar to other treatments. Application of 225 kg N ha-1 produced the maximum sugar yield of 16.87 t ha‾1. Phosphorus, K, Zn, Mg and B contents in the plant tissue increased significantly with increasing N application levels.
Uitgever:
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