Effect of planting method, irrigation schedule and straw mulching on growth and water productivity of spring sugarcane (Saccharum officinarum L.)
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Date
2019
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Punjab Agricultural University, Ludhiana
Abstract
The investigation entitled “Effect of planting method, irrigation schedule and straw mulch on growth and water productivity of spring sugarcane (Saccharum officinarum L.)” was carried out at Punjab Agricultural University, Regional Research Stations, Faridkot and Kapurthala during spring season of 2018. The experiment comprised of six planting methods i.e. conventional flat at 75 cm row spacing with mulch and without mulch, conventional flat at 120 cm spacing with mulch and without mulch, paired row trench planting at 30:120 cm with mulch and without mulch in main plots and three irrigation schedules at 0.60, 0.80 and 1.00 IW: CPE in sub plots of split plot design with three replications. The data revealed that paired row trench planting recorded the highest cane yield, 96.3 t ha-1 and 99.8 t ha-1 at Faridkot and Kapurthala, respectively which was statistically at par with 75 cm row spacing and was significantly higher than 120 cm spacing. Number of millable canes and CCS yield was the highest in paired row trench planting method. The crop raised with mulch showed higher yield and yield attributes over no mulch. Among the irrigation schedules, the crop irrigated at 1.00 IW: CPE recorded the highest cane length, cane weight, number of millable canes and cane yield. The apparent and total water productivity was higher at paired row trench planting with mulching when crop was irrigated at 1.00 IW: CPE than other treatments. Paired row trench planting resulted in 56.9% and 63.4% higher apparent water productivity as compared to 75 cm and 120 cm spacing, respectively at Faridkot and 56.1% and 59.5% higher over 75 cm and 120 cm row spacing at Kapurthala, respectively. The consumptive use of water was 1231.0 mm and 1157.7 mm with 1.00 IW: CPE at Faridkot and Kapurthala, respectively followed by 0.80 and 0.60 IW: CPE. The highest gross returns, net returns and B: C was recorded in paired row trench planting with mulching at both the locations.
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