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Influence of With Holding Last Irrigation and Plant Age on the Quality and Forage Yield of Sorghum (Sorghum bicolor L.)

Mazhar Hussain, Muhammad Shahid Ibni Zamir, Muhammad Wasim Anjum, Mehar un Nisa, Hina Fatima, Muhammad Asim, Muhammad Abdul Rauf Malik, Zaheer Ul Haq, Muhammad Usman Ibrahim, Atta_ur_Rehman Saeed, Naeem Mahmood, Hafiz Muhammad Rashad Javeed, Saima Yaseen

Abstract


Irrigation play a vital role for producing high fodder yield of sorghum crops.  Quality of fodder is determined by the plant age. The experiment to evaluate the influence of withholding last irrigation and plant age on the quality and forage yield of sorghum was conducted during Kharif season 2013 at the Agronomic Research Farm, University of Agriculture Faisalabad, Pakistan. The experiment was laid out in Randomized Complete Block Design with split plot arrangement. The experiment comprised of 3 treatments such as withholding last irrigation I1 (7 days before harvest), I2 (14 days before harvest), I3 (21 days before harvest) and 3 treatment such as plant age H1 (60 days after sowing), H2 (80 days after sowing), and H3 (100 days after sowing). The data shown that maximum forage yield (69.7 t ha-1) and dry matter yield (17.2 t ha-1) were recorded in treatment H2 (80 days after sowing) and I1 (7 days before harvest). Whereas quality parameters like crude protein (9.77 %), total ash (9.38 %) were maximum in treatment I1 and plant age in H1 but crude fiber (39.55%) was maximum in withholding last irrigation I3 and plant age H3. The increase in yield was mainly due to greater plant height, stem diameter, number of leaves per plant, and leaf area per plant. The study concluded that sorghum forage harvested 80 days after sowing along with withholding last irrigation applied 7 days before harvest performed better and gave maximum results under agro-ecological conditions of Faisalabad, Pakistan.


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