Effect of Diammonium Phosphate (DAP) on flowers and bulb production of Tulip's cultivars

A research study entitled "Effect of Diammonium Phosphate (DAP) on flowers and bulb production of Tulip’s cultivars" was conducted at Ornamental Nursery, Department of Horticulture, The University of Agriculture Peshawar-Pakistan. The results of the experiment showed that there was a significant effect on number of days to flowering (108.0) and leaf length (22.50 cm), when applied DAP at the rate of 3.0 g plot-1, while maximum weight of the daughter bulbs (5.92 g) were also significantly affected by 6 g of DAP plot-1. Among different tulip's cultivars Renown showed significant effect on number of days to flowering (121.79), leaf length (25.92 cm), number of flowers plant-1 (1.00) and weight of daughter bulbs (6.42 g). As concerned to interaction, cultivar Renown showed maximum leaf length (28.33 cm) when 6 g of DAP plot-1 was used. While the cultivars Apeldroom when treated with 6 g of DAP showed the maximum weight of daughter bulbs (7.60 g). The experimental results showed that among different cultivars of tulip, cultivar Renown showed best performance regarding flower production when treated with 3 g of DAP under the agro climatic conditions of Peshawar valley, Pakistan.