Effect of Harvesting Age on Yield, Yield Components and Quality of Some Promising Sugarcane Varieties.

Abstract

Two field trails were carried out at El-Mattana Agricultural Research Station (latitude of 25.17 o N and longitude of 32.33 o E), Luxor Governorate, Upper Egypt during 2013/2014 (virgin cane) and 2014/2015 (first ratoon crop,) to find out the optimum harvesting age for some sugarcane varieties. Treatments consisted of a factorial combination of three promising sugarcane varieties (G.98-28, G. 99-160 and G.2003-49) and five harvesting age (10, 11, 12, 13 and 14-months) were arranged in factorial experiment conducted in randomized Complete Block Design with three replications. The results showed that all of the studied traits were significantly influenced by delaying the harvest age from 10 to 14-month age. Also, the results showed that the three promising sugarcane varieties significantly differed in stalk cane length, diameter, as well as Brix, sucrose purity, sugar recovery percentages, cane and sugar yields (Ton/fed.). Generally, promising sugarcane variety G.2003-49 was superior over the other two varieties i.e. G.98-28 and G. 99-160 in cane and sugar yields (Ton/fed.).

Genetic Variability of Some Promising Sugarcane Varieties (Saccharum spp) under Harvesting Ages for Juice Quality Traits, Cane and Sugar Yield

“…Differences among varieties could be due to differences in their growth and response to the surrounding environmental conditions. These results are in agreement with those reported by Besheit et al [28] and Ahmed [5], who found significant differences among varieties for brix, sucrose and purity degrees. : Mean performance of five varieties for brix%, sucrose% and purity% in plant cane (PC), first ratoon (FR) and across crops.…”

“…These results might be attributed to increase of growth and hence an expected increase in cane yield, as well as the increase in sugar yield may be due to increase in sucrose, sugar recovery percentages which reflected on sugar yield as a final product. These results are in line with those obtained by Jadhav et al Ahmed and Abd El-Razek and Besheit [27,5,6] who reported that delaying harvesting from 10 to 13 month increased sugar recovery percentage, cane and sugar yield.…”

“…A longer harvesting season may allow industry to manage increasing production or to support investment opportunities in value-added by-products. The date when sugarcane is harvested affects yield by imposing both crop age and seasonal factors on the crop during its growing season [4][5][6][7]. Harvesting time is one of the most important factors affects productivity, and varietal differences in growth and maturity rates [8], so Sundara and Verma [9,10] classified varieties to early, mid and late maturing based on the time taken for maturity.…”

Performance and stability analysis of some sugarcane genotypes across different environments

“…This indicates that these genotypes had accumulated favorable alleles for tallness and could be used in future breeding programs. Ahmed (2003), Osman et al (2011), Hagos et al (2014 and Ahmed et al (2016 a) reported that delay harvesting date up to 14 months gave the highest values of stalk height in plant-cane and 1stratoon-crops.…”

“…It noticed that the genotypes G.99-103 and G.2010-7 in plant-cane as well as two genotypes; G.99-103 and G.2004-27 in first-ratoon were heavier in stalk weight than the control variety; G.T.54-9 (Table 4). Ahmed (2003) and Osman et al (2011) concluded that the 14-month-old was the most suitable age for harvesting whether for plant-cane or ratooncrops on stalk weight.…”