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YIELD AND QUALITY OF SUGARCANE (SACCHARUM OFFICINARUM L.) AS AFFECTED BY MICRONUTRIENT APPLICATION

Khan, Ghulam Sarwar (1994) YIELD AND QUALITY OF SUGARCANE (SACCHARUM OFFICINARUM L.) AS AFFECTED BY MICRONUTRIENT APPLICATION. PhD thesis, Sindh Agriculture University, Tando Jam.

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Abstract

Several experiments were conducted on silt loam soil at Sugar Crops Research Institute, Mardan during 1989 1992 to evaluate the effect of foliar application of micronutrients, Zinc (Zn), Copper (Cu), Boron (B) and Manganese (Mn) on the yield components, leaf macro and micronutrients concentration, quality and ratoonability of sugarcane variety CP 65/357. Foliar application of micronutrients increased the average number of tillers, number of internodes, length of internodes, stem diameter, number of millable canes and plant height of two plant crops over control treatment. The lowest rates of Zn and Cu were found superior in increasing the size and number of all the yield contributing parameters. The requirement for B and Mn varied for different characters. The size and number of all the growth and yield components of ratoon crop were also maximized by the foliar application of micronutrients especially the lowest levels of Zn and Cu than control treatment. The average cane yield of two plant crops was significantly increased by the foliar application of micronutrients over check treatment. The lowest rates of Cu and Zn increased cane yields by 35.33 and 34.51 %, respectively over control treatment. The highest rates of these elements resulted in lower cane yield. Application of the highest rate of Mn produced comparatively more cane yield than its lower rates. The average cane yield of plant crops but significantly higher than the untreated plot. The lowest level of Cu and Zn produced 42.14 and 38.38 % more cane yield than control treatment. Cane yield dropped gradually with each increment in the rate of application of all micronutrients. Significantly lower cane yield was recorded for control treatment. The average N, P, Zn and Cu concentration in the leaves of two plant crops was increased by the foliar application of the minimum rates of Zn and Cu while, leaf Mn concentration was directly proportional to the higher rates of Cu showing both synergistic and antagonistic interaction with the leaf micronutrient concentration. The higher rates of B and Mn resulted in to greater leaf Zn, Cu, B and Mn concentration. The leaf macro and micronutrients concentration of ratoon crop followed almost similar trend like plant crops. The lower rates of Zn and Cu increased considerably the leaf N, P, Zn, Cu, B and Mn concentration than the control treatments. The lower rates of B were found effective in increasing the leaf N, P and Cu concentration. The higher rates of Mn resulted in to greater N, P, Zn, Cu, B and Mn concentration in the leaves than the lower rates. The average cane brix, pol% and commercial cane sugar (CCS%) of two plant crops was greatly influenced by micronutrients application than the untreated plots. The average cane brix pol% and CCS% of plots treated with the minimum rate of Zn, Cu and all rates of B were found superior in increasing sugar concentration in the cane than rest of the micronutrients and control treatment. The average Fibre % of micronutrients treated plots of both the plant crops was comparatively lower than the control treatment. Foliar application of micronutrients also increased the average cane brix, pol% and CCS% of ratoon crop than the untreated plots. The lowest rates of Zn, Cu and B were found more effective in increasing juice quality than the control treatment. As sugar yield is a function of cane yield and CCS% therefore, those elements which enhanced both the cane yield and CCS% certainly resulted in greater sugar production. Sugar yield of both the plant and ratoon crops was maximized by the foliar application of micronutrients. Among the micronutrients, the lowest rates of Zn and Cu were found more effective in boosting sugar production while the requirement for boron varied for both the plant and ratoon crops for maximum sugar production.

Item Type:Thesis (PhD)
Uncontrolled Keywords:Sugarcane, saccharum, Officinarum L, Micronutrient application, Morphological characters, Silt loam soil, Foliar application, Zinc (Zn), Copper (Cu), Boron (B), Manganese (Mn), CP 65/357, Tillers, Internodes, Stem diameter, Millable canes, Plant height, Synergistic and antagonistic interaction, Cane brix, Commercial cane sugar, Sugar concentration,
Subjects:Agriculture & Veterinary Sciences(a) > Agriculture(a1)
ID Code:285
Deposited By:Mr Ghulam Murtaza
Deposited On:17 Jun 2006
Last Modified:04 Oct 2007 21:00

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