DefinePK

Abstract

To examine the growth and radiation use efficiency (RUE) of different sugarcane cultivars (HSF 240, CP 77-400 & CPF 249) under two planting methods (2.5 feet apart single row, a farmers’ practice, and 4 feet apart dual rows deep trench plantings, a recommended practice) at Research Farm of Sugarcane Research Institute (SRI), Ayub Agricultural Research Institute (AARI), Faisalabad during 2019-20. The experiment was carried out in randomized complete block design with split-plot arrangement in three repeats. The results showed maximum dry matter (3348.24 g m-2), CGR (21.49 g m-2 day-1), mean CGR (12.78 g m-2 day-1), LAI (7.81), leaf area duration (1290.32 days), along with radiation use efficiency for total dry matter (2.16 g MJ-1) and cane yield (6.32 g MJ-1) in 4 feet apart dual rows trench planting in comparison to 2.5 feet apart single row trench planting, 2.08 g MJ-1 and 5.70 g MJ-1, respectively. On the other hand, higher dry matter (3451.42 g m-2), CGR (21.54 g m-2 day-1), mean CGR (13.16 g m-2 day-1), LAI (8.01), LAD (1324.58 days), RUE for dry matter production (2.20 g MJ-1) and cane yield (6.53 g MJ-1) was recorded in variety CP 77-400, a direct introduction to SRI, as compared with local material, HSF 240 and CPF 249 and occupying large area in whole Punjab-Pakistan.
Keyword: Sugarcane, planting methods, cultivars, sugarcane physiology.