Quality of Dutch rose cultivars influenced by different levels of fertigation, growth regulators and their interaction effects under polyhouse condition

Abstract

Increased concentration of gibberellic acid combined with 120 percent of recommended dose of fertilizers as fertigation significantly increased neck diameter, neck length, flower stalk length, stalk diameter and diameter of opened flower respectively. Though all the varieties positively responded for the treatments but variety Grand gala produced significantly superior quality of flower when plants were treated with 120 per cent of fertigation in combination with 300 ppm of GA3.