Effect of Nitrogen and Phosphorus Fertilizers on root growth and nodulation in Black Locust (Robinia pseudoacacia L.) seedlings
Effect of Nitrogen and Phosphorus Fertilizers on root growth and nodulation in Black Locust (Robinia pseudoacacia L.) seedlings
Shaukat Ali
ABSTRACT
Root weight and number of nodules/seedling of Black
locust (Robinia pseudoacacia L.) were differently
affected by Nitrogen fertilization. Root weight was
minimum in N stressed medium while number of nodules
were a little less than maximum. Root weight increased
significantly with 100 ppm of nitrogen while there was
slight increase in nodulation. Frequent application of N
resulted in increase in root weight while a reduction in
the number of nodules was recorded. Phosphorus
fertilization increased root weight but there was no
effect on the number of nodules with phosphorus alone.
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June 1994
Vol. 44, Iss. 2
