Response of nitrogen on growth and yield parameters of sunflower hybrids (Helianthus annus L.)

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Response of nitrogen on growth and yield parameters of sunflower hybrids (Helianthus annus L.)

Muhammad Irfan Ahmad, Abdul Latif, Liang He, Muhammad Zulfiqar Ahmad, Jalil Ahmad, Asad Abbas, Waleed Asghar, Muhammad Yaha, Saboor Ahmad, Muhammad Tariq Mahmood, Muhammad Bilal
J. Bio. Env. Sci.12( 5), 440-445, May 2018.
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One year field study was conducted to determine the effect of different application rates of nitrogen fertilizer on growth, development, yield and it components of sunflower hybrids. A research study was conducted at Research Area of Agronomy Farm, University College of Agriculture, University of Sargodha, Punjab, Pakistan in spring season 2013. The results are indicated that increasing the levels of nitrogen are positive effect on crop growth rate and net assimilation rate, the highest net assimilation rate was observed in Sunflower-33 as compared to S-78. and statistically significant results were observed for plant height (cm), 1000- achene weight (g) and harvest index (%). The results showed that highest harvest index S-78 and lowest showed that Hysun-33.


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