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Response of Sweet Sorghum Varieties to Different Fertilizer Doses for Sugar Recovery and Biomass Production Under Irrigated Conditions of Dera Ismail Khan

Response of Sweet Sorghum Varieties to Different Fertilizer Doses for Sugar Recovery and Biomass Production Under Irrigated Conditions of Dera Ismail Khan

Faisal Ali1, Abdul Aziz Khakwani1, Iqtidar Hussain1, Ghazanfar Ullah1, Atiq Ahmad Ali Zai2, Moneeza Abass3, Zuhair Hasnain4* and Sara Zafar5*

1Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Pakistan; 2Department of Horticulture, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Pakistan; 3Department of Environmental Science, Lahore College of Women University, Jail Road, Lahore, Pakistan; 4Pir Mehr Ali Shah, Arid Agriculture University, Rawalpindi, Pakistan; 5Department of Botany, Government College University, Faisalabad, Pakistan.

 
*Correspondence | Zuhair Hasnain and Sara Zafar, Pir Mehr Ali Shah, Arid Agriculture University, Rawalpindi, Pakistan; Department of Botany, Government College University, Faisalabad, Pakistan; Email: sarazafar@gcuf.edu.pk; zuhair@uaar.edu.pk

ABSTRACT

A field study was conducted in the Agronomic Research Area, Faculty of Agriculture, Gomal University, D.I. Khan to observe the effect of different fertilizer doses on the yield, biomass and the response of different cultivars of sweet sorghum, during the Kharif season (2015–16). The study was carried out using a split-plot layout and a randomized complete block design (RCBD). The cultivars of sweet sorghum were chosen for the main plots, while fertilizer doses were distributed in the sub-plots. Fourteen parameters were monitored throughout the study. According to the data that was analyzed, the research’s variables had a substantial impact on leaf area index (LAI), green fodder yield (t ha), plant height (cm), net photosynthesis rate (u mole m-2 sec-1), crop growth rate (g cm2 day1), (%), brix (%), bagasse (%), purity (%), reducing sugars and pol (%). Though, there was not a noticeable impact on the amount of chlorophyll (u g cm3) or the number of leaves on the plant. The most significant interaction between the Sudan grass hybrid and fertilizer increased the crop growth rate (16.43 g day), leaf area index (5.01), net photosynthesis rate (66.07 mole m2 sec’’), green fodder yield (109.99 t ha’’), reducing sugars% (2.47), brix% (13.50), and pol% (8.11). Based on the research results, it has been found that Sudan grass hybrids fertilizer using NPK @ (150:120:100 kg ha’’) attained better green fodder production while the sugar and ethanol generating parameters performed best with NPK @ 100:80:60: kg ha’’. 

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Pakistan Journal of Zoology

June

Pakistan J. Zool., Vol. 56, Iss. 3, pp. 1001-1500

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