Influence of subsurface drip fertigation duration and levels on growth parameters of plant and ratoon sugarcane

Abstract

:The simultaneous delivery of water and fertilizers to the active root zone through subsurface drip fertigation system ensures optimum growth of sugarcane. Field experiment was conducted at ZARS, V.C. Farm, Mandya during 2014-15 and 2015-16 seasons comprising of plant and ratoon cane, respectively. The investigation was conducted to know the performance of sugarcane as influenced by duration and levels of subsurface drip fertigation. Results revealed that fertigation duration upto 9.5 months recorded significantly higher growth parameters of plant and ratoon cane at harvest viz., plant height (330.6 and 296.2 cm), number of tillers m -1 (34.66 and 43.33), leaf area dm 2 m -1 (87.32 and 118.69), total dry matter production g plant -1 (652.57 and 466.91) and SPAD reading (34.67 and 37.72), respectively. Growth parameters significantly not influenced by fertigation levels. Whereas, the interaction between fertigation duration and levels were significant. Fertigation upto 9.5 months with 125 per cent RDF recorded significantly higher growth parameters viz., plant height (332.5 and 299.5 cm), number of tillers m -1 (34.97 and 43.98), leaf area dm 2 m -1 (89.27 and 121.63), total dry matter production g plant -1 (658.70 and 473.37) and SPAD reading (34.92 and 37.82) in plant and ratoon cane, respectively at harvest. Stastically, at par results were observed with fertigation upto 9.5 months with 100 per cent of RDF and fertigation upto 9.5 months with 75 per cent of RDF. Normal method of sugarcane cultivation with surface irrigation with 100 per cent RDF soil application recorded lower plant height (281.4 and 259.1 cm), number of tillers m -1 (29.2 and 38.15), leaf area dm 2 m -1 (57.34 and 84.38), total dry matter production g plant -1 (519.69 and 340.36) and SPAD reading (23.39 and 26.47). Thus, results clearly indicated that 25 per cent of the recommended dose of fertilizer could be saved with higher cane growth through sub surface drip fertigation (SSDF) over normal practice of sugarcane cultivation.Key Words : Sub surface drip fertigation, Fertigation duration, Fertigation levels, SPAD reading View Point Article : Padmanabhan, M., Nagaraju, Mohanraju, B. and Thimmegowda, M.N. (2017). Influence of subsurface drip fertigation duration and levels on growth parameters of plant and ratoon sugarcane. Internat. J. agric. Sci., 13 (2) : 315-320,

Nitrogen fertigation schedule and irrigation effects on productivity and economics of spring sugarcane

“…This might be due to better nutrition effect on crop. These findings are also supported with observation recorded by Padmanabhan et al (2017). Increment in NMC was due to increased number of tillers and ultimately it converts into maximum number of millable cane.…”

Irrigation and fertigation scheduling effect on phenology and yield of spring sugarcane (Sachharum officinarum)

“…This might have been due to better nutrition effect on crop and need based supply of nutrient. These findings are also supported with observation recorded by Padmanabhan et al (2017). The data pertaining to leaf area index, leaf area duration and chlorophyll content (Table 1) revealed that (i 3 ) drip irrigation recorded significant increase over I 1 (flood irrigation) and i 2 (furrow irrigation) at different growth stages of crop growth in pooled analysis of two years of study.…”

“…increase phenological character due to profuse growth and better management of nitrogen application. These findings are in conformity with findings ofSreewarome et al (2007) andPadmanabhan et al (2017).…”

Effect of irrigation and potash levels on growth, yield and quality of spring sugarcane (Saccharum officinarum)

“…Compared to K 1 plots, K 2, K 3, and K 4 plots had 13.98, 26.16, and 34% higher germination, 0.86, 4.28, and 4.45% higher NMC, and 1.87, 1.87, and 4.21% higher brix near harvesting, 0.89, 2.41, 3.31% higher yields (Table 1) as also observed by Ashraf et al (2008), Shukla et al (2009). Further, increments from K 2 to K 3 and K 3 to K 4 were reported to be 10.69 and 6.21%, 3.40 and 0.16%, 0 and 2.29%, 1.50 and 0.88%, respectively, in germination, NMC, brix near harvesting and yield, respectively (Table 1) which is due to role of potash in improving root growth (Kumar et al 2015), water use efficiency (Quampah et al 2011), N use efficiency (Padmanabhan et al 2017) and condition specific stomatal opening (Kumar et al 2019).…”