After reading this article you will learn about the major insects, pests and diseases found in roses. Insect-Pests found in Roses: White ants: They attack the plants and damage the root system and slowly plants die completely. White ants can be controlled by applying 5% B.H.C. and 5% DDT @2.5- 5 g/pit at the time of planting. Red scale: This [...]
The article throws light upon the top five groups of roses. The groups are: 1. Hybrid Tea’s (H.T.) 2. Floribundas 3. Climbers 4. Miniature Roses 5. Shrub Roses. Group # 1. Hybrid Tea's (H.T.): As the name indicates, the varieties of this group have been obtained by crossing between hybrid perpetuals and Tea roses of China. The first variety 'La [...]
During winter months when temperature in green house goes down below the optimal range of temperature required to produce quality blooms. Heat loss in green house is through conduction, infiltration and radiation. Metallic frame, polythene, sash bars, etc. are the sources of heat loss through conduction whereas leakages and holes are the sources of infiltration. In radiation warm objects emits [...]