Growth and boichemical contents of Cowpea (Vigna unguiculata L.) on the application of zinc

ABSTRACT
The present investigation deals with the effect of zinc on the morphological and biochemical
parameters of Cowpea (Vigna unguiculata L) under laboratory condition. The Cowpea plants are grown
in petriplates lined with filter paper treated with various concentrations (control, 10, 25, 50, 75, 100, 150
and 200 ppm) of zinc. The experiments were replicated five times. The various morphological
parameters such as germination percentage, shoot length, root length, root nodules, total leaf area, fresh
weight and dry weight of the plants were measured. Similarly the biochemical contents such as
chlorophyll, carotenoid, protein and Sugar was analyzed. The results indicated that the various
morphological and biochemical parameters increased up to 50 ppm and decreased at high levels of zinc.

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WSN 16 (2015) 53-63