The nitrogen application significantly affected plant
height. Both the nitrogen levels significantly
increased the plant height over the control. The
highest plant height (158.3 cm) was recorded when
nitrogen was applied at 50 kg ha-1. These results are
in agreement to those of Abayomi et al. (2008) who
also reported an increase in plant height with nitrogen
application. Among the varieties the BR-99 produced
significantly taller plants and cultivar cluster bean
2/1produced the shortest plants. Significant
difference among guar cultivars has also been
reported by Vahidy and Yousufzai (1999) and Singh
et al. (2006). Interaction between nitrogen levels and
cultivars for plant height was also significant. All
cultivars differed significantly at all nitrogen levels.
The cultivar cluster bean 2/1produced shortest plants
and BR-99 tallest plants at all nitrogen levels.
The stem diameter was not affected significantly