The present study was carried out at El-Mattana Agriculture Research Station Qena Governorate, Upper Egypt in 2007/2008 and 2008/2009 growing seasons to evaluate three sugarcane varieties (two promising varieties viz. G. 98-28, Phil. 8013 and the commercial variety G.T. 54-9) grown at three planting pattern; whole stalk as one, two and three pieces. Treatments were arranged in a split-plot design with three replicates. The main plots were assigned to three sugarcane varieties while planting pattern were distributed in the sub plots. Results showed that sugarcane varieties were significantly differed in stalk diameter, sucrose percentage and sugar yield ton/fed in the second season only. Cane yield was significantly affected by grown varieties in both seasons. Phli. 8013 showed superiority in all significant traits. Under this study as compared with of her varieties planting pattern were significantly affected in all studied traits except stalk height, brix and sucrose percentages in the second season and number of millable cane/m 2 in both seasons. Planting sugarcane with by cutting cane stalk into three pieces gave the highest values in all studied traits except, stalk diameter which obtained with planting whole stalk. The interaction effect between varieties and planting pattern was insignificant in all studied traits except in purity percentage in the first season. The height values were obtained when planting Phli.8013 variety by cutting cane stalks into three pieces. Under conditions of the present work, growing sugarcane varieties i.e., G.T. 54-9, Phil. 8013 and G. 98-28 by cutting cane stalk into three pieces recommended for getting the highest cane and sugar yields/fed.
Two filed trials were carried out in Shandaweel Agricultural Research Station, Sohag Governorate during 2006/2007 and 2007/2008 seasons. Each trail included 12 treatments represent, hand hoeing once at 45 days after planting (DAP), hand hoeing twice at 45 and 65 DAP and hand hoeing thrice at 25, 45 and 65 DAP, using herbicides, Garlon at rate 200 cm/fed, Derby at rate 30 cm/fed, Starane at the rate of 200 cm/fed and Karmex at the rate of 2 kg/fed, and the use of these herbicides separately plus one hand hoeing at 65 DAP and unweeded (control). Treatments were arranged in a randomized complete block design with four replicates. Sugarcane var Ph. 8013 was used. The obtained results revealed that weed control treatments had a significant affected on narrow, broad leaved and total weeds (g/m 2) in both seasons. Hand hoeing thrice, hand hoeing twice and Garlon + one hand hoeing gave the best weed control as compared to unwedded treatment in the first and second seasons, respectively. Also, weed control treatments significantly affected stalk height and diameter, number of internodes/stalk, brix, sucrose and sugar recovery percentages as well as millable cans, cane and sugar yields in both seasons. Using hand hoeing thrice resulted in the highest values of the studied traits in both seasons, except brix, sucrose and sugar recovery percentages in the second season. Using Karmex + one hand hoeing resulted in the highest values of these traits as compared to the unwedded treatment. Under conditions of the present study, it can conclude that hand hoeing thrice achieved the highest values for cane and sugar yields.
T HE PRESENT investigation was carried out at Shandaweel Agricultural Research Station, Sohag Governorate (latitude of 26°33'N, longitude of 31°41'E and Altitude of 69m), in the two successive seasons 2016/2017 and 2017/2018 to investigate the effect of study the effect of nitrogen, phosphorus and filter cake on yield and quality of sugarcane. The filed experimental work was carried out in a Randomized Complete Blocks Design (RCBD) using a split-split plot arrangement in three replications in both growing seasons. The results showed that increasing nitrogen levels from 150 up to 210kg N/fad resulted in a significant increase in plant length, diameter, stalk weight, number of millable canes, cane and sugar yields, as well as brix, sucrose, quality and sugar recovery percentages in both seasons. Super phosphate addition by rates 30kg P 2 O 5 /fad resulted in a significant increase in plant length, diameter, number of millable canes, stalk weight and cane and sugar yields, as well as brix, sucrose and sugar recovery percentages in both seasons. Results showed that the addition of filter cake by 4tons/fad give a significant increase in plant length, diameter, number of millable canes, stalk weight, cane and sugar yields, as well as brix, sucrose and sugar recovery percentages in both seasons.
Two field trials were carried out at Shandaweel Agricultural Research Station (Sohag Governorate) during 2003/2004 and 2004/2005 seasons. Each trail included 24 treatments represent the combination between three irrigation intervals (12, 16 and 20 days, i.e. a total number of 27, 20 and 16 irrigations), four potassium fertilizer levels (0.0, 25.0, 50.0 and 75.0 kg K 2 O/fed) and two sugarcane varieties viz. G.T.54-9 and Ph.8013. Treatments were arranged in a Split-Split Plot Design with three replicates. The main plots were assigned for irrigation treatments; sugarcane varieties were distributed in the sub plots and potassium fertilizer levels were randomly distributed in the subsub plots. The results showed that decreasing irrigation intervals from 20 to 12 days significantly increased stalk length, stalk diameter and cane yield/fed in both seasons. Applying irrigation water every 12 and/or 16 days attained significant increase in the number of millable cane/fed and sugar yield/fed. However, both of sucrose and sugar recovery percentages were negatively and significantly affected by increasing the periods between irrigations.All the studied traits of sugarcane were positively and significantly influenced by increasing K level from 0.0 up to 75 kg K 2 O/fed.The two sugarcane varieties differed significantly in their response to all studied characters. The commercial variety G.T.54-9 recorded higher values of stalk length and number of millable cane/fed, while the promising cane variety Ph.8013 had thicker stalks, higher sucrose and sugar recovery percentages, and sugar yields.The present investigation showed that the planting sugarcane variety Ph.8013 irrigated every 12 or 16 days and fertilized with 75 kg K 2 O/fed is recommended to obtain the highest cane and sugar yields/fed.
Two field experiments were carried out at Shandaweel Agricultural Research Station, Sohag Governorate in 2007/2008 and 2008/2009 seasons to study the effect of row spacing of sugarcane and some weed treatments on growth, quality and yield. Sugarcane cultiver Phil.8013 was spring-planted in three row spacings of 80, 100 and 120 cm, and ten weed control treatments were applied: single application of Garlon 90% EC at the rate of 2000 cc/fed as post-emergence; Brominal 24% EC at the rate of 1 l/fed as post-emergence; Bazagran 48% AS at the rate of 1 l/fed, 30 days after planting; Granstar 75% DF at the rate of 8 g/fed as post-emergence, at 30 days after planting. The application of each of the four herbicides was followed by one hand hoeing 30 days from herbicide application; hand hoeing three times at 25, 45 and 65 days after planting (DAP) and unweeded (control). A split plot design with three replications was used. Row spacings were allocated in the main plots, while weed control treatments were randomly distributed in the sub-plots.Results revealed that widening spaces between rows of sugarcane from 80 up to 100 and 120 cm resulted in a significant and gradual increase in dry weight of narrow and broad leaved weeds as well as total weeds/m 2 in both seasons. There was a significant influence of the applied weed treatments on dry weight/m 2 of both narrow and broad-leaved weeds and total weeds/m 2 . The results showed that the most effective treatment in eliminating both narrow and broad-leaved weeds was hand hoeing three times, followed by the application of the used herbicides combined with one hand hoeing, and the application of each herbicide alone.Growing sugarcane in rows spaced at 80-cm apart resulted in a significant increase in stalk height, number of millable canes, cane and sugar yields/fed. The thickest cane stalks were produced from plants grown at 120 cm. Row spacing rows at 100 cm gave the highest values of brix, sucrose, juice purity and sugar recovery percentages. Practicing hand hoeing three times 25, 45 and 65 DAP to get rid of weeds associated with sugarcane plants resulted in the highest values of the studied traits, while the unweeded plots gave the lowest ones. Under the conditions of the present work, growing sugarcane, in rows spaced at 80 or 100 cm and controlling accompanied weeds by manual hoeing three times at 25, 45 and 65 DAP, Brominal + hand hoeing once and/or Garlon + hand hoeing once can be recommended for getting the highest cane and sugar yields/fed. Meanwhile, economic evaluation of the studied factors showed that planting sugarcane in rows of 80-cm apart as well as controlling weeds by applying Brominal herbicide + hand hoeing once or manual hoeing three times gave the highest values of net income and profitability %.
ratoon) to investigate the effect of three row spacing (80, 100 and 120 cm), three nitrogen levels (170, 200 and 230 kg N/fed in plant cane and 185, 215 and 245 kg N/fed in the 1 st ratoon) on yield and quality of two sugarcane varieties viz. G.99-160 and G.T.54-9 (the commercial variety) in a split-split plot design with three replications.The results showed that planting sugarcane varieties in rows spaced at 80-cm apart attained a significant increases in cane stalk height, number of millable canes, cane yield/fed, brix, sucrose, sugar recovery percentages and sugar yield/fed compared with those planted at 100 and 120 cm. Significant increase in stalk diameter was recorded at 120 cm row spacing.The results indicated that the two sugarcane varieties differed significantly in cane stalk height, stalk diameter, number of millable canes, cane and sugar yields, whether they were grown as plant cane or 1 st ratoon crop, as well as brix, sucrose percentages in the 1 st ratoon. Insignificant variance was detected between the tested varieties in sugar recovery %, in the plant and 1 st ratoon crops.Raising N fertilization level from 170 to 200 kg N/fed for the plant cane and from 185 to 215 kg N/fed for the 1 st ratoon crop resulted in a significant increase in cane stalk height, stalk diameter, number of millable canes, cane and sugar yields /fed.Under conditions of the present work, growing G.T.54-9 and/or G.99-160 sugarcane varieties in rows of 80-cm apart and fertilized with 200 and 215 kg N/fed for the plant cane or 1 st ratoon, respectively, can be recommended to get the maximum cane and sugar yields/fed.
Seven field experiments were conducted at three experiment stations representing major sugarcane producing regions in Egypt. Each experiment comprised a randomized complete block design with three replications. Fourteen elite breeding lines typical of those routinely generated in the three final selection stages of sugarcane breeding programs in Egypt, along with one check variety (GT54-9) were evaluated for cane and sugar yield in this study during the 2018/2019, 2019/2020 and 2020/2021 seasons. Stability parameters including cultivar stability rank and superiority index were determined. The data was also investigated using GGE-biplots, the additive main effects and multiplicative interaction model (AMMI), and the AMMI stability value (ASV). The genotype main effect was used to visualize the G x E interaction. The results of these trials are of significance in guiding the selection and recommendation of superior sugarcane varieties and more stable in sugarcane production zones. The clone G.2016-129 had a mean sugar yield and cultivar superiority index for sugar yield exceeding that of GT54-9, and hence was recommended for commercial planting. Because of local conditions in Egypt, an elite sugarcane variety would have high and stable yield and would adapt to a wide range of environments. In the present study, only one clone G.2016-129 fit that definition by producing higher and more stable sugar yield than the commercial variety GT 54-9.. At the side of multivariate analyses, the ASV (AMMI stability value) supports selection of stable varieties in the AMMI Method. Varieties with lowest ASV are stable. Therefore, the results of this study exposed that G.2016-95, F-150 and G.2016-129 with lowest ASV for cane yield by contrast, G.2009-11, G.2016-128, F-150 and G.2016-95 with lowest ASV for sugar yield, were stable clones for cane and sugar yields, respectively
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