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The influence of nitrate supply on growth and in- vivo nitrate reductase activity of leptochloa fusca seedlings

Yusuf zafar and K.A. malik

Leptochloa fusca (L.) kunth, seedlings suppliedwith 0,5,10 and 20 mm of nitrate were grown hydroponically as well as in sand culture . fresh and dry weight of seedlings sampled at 10, 12, 14 and 16 days after plantation were significantly different from the zero nitrogen treatment with maximum increase I seedlings grown in 10mM, NO3 solution. Total-N of plants exhibited similar pattern . nitrate reductase activity was high and comparable activities were obtained in shoots a well as in roots . differences in all parameters were also influenced by the growing cinditions.

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