Site pages
Current course
Participants
General
Topic 1
Topic 2
Topic 3
Topic 4
Topic 5
Topic 6
Topic 7
Topic 8
Topic 9
Topic 10
Topic 11
Topic 12
Topic 13
Topic 14
Topic 15
Topic 16
Topic 17
Topic 18
Topic 19
Topic 20
Topic 21
Topic 22
Topic 23
Topic 24
Topic 25
Topic 26
Topic 27
Topic 28
Topic 29
Topic 30
Topic 31
Topic 32
Topic 33
Topic 34
Topic 35
Topic 36
Mango malformation
Production of thick vegetative shoots and transformation of floral parts into a compact mass of sterile flowers.
Two types of malformation
Floral malformation results in enlargement of flowers with new flowers being produced even after fruit set but with less % of hermaphrodite flowers. Malformed panicles may be
1. Loose 2. Compact. Malformation is serious in North than in South. It may result in loss of about 50-60% of the total crop. Krishnabhog, Collecter, Langra, Neelum are tolerant (seedling trees are found to be tolerant) Virus, fungus, mites, nutrients, C/N ratio, carbohydrates, nucleic acids, amino acids, proteins, phenolic compounds, enzymatic activity in the plant, phytohormones and occurance of malformation like substance are all supposed to be the probable causes for malformation. Control measures 1. Application of plant growth regulators and phenolic compounds (NAA,Ethrel,GA, Paclobutrozol, etc.) Inspite of this, malformation is still a puzzling problem. It is therefore concluded that malformation can be kept under check by maintaining2. Deblossoming: at bud brust stage-ethrel 3. Use of antagonists and antimalformins: Glutahione, Ascorbic acid, Silver nitrate 4. Application of nutrients: High NPK added with FeSO4, Cobalt sulphate 5. Pruning of malformed parts. 6. Application of pesticides: Parathion,Kelthane,Kerathane. 7. Covering panicles with polythene film to raise the temperature around the panicle. |
Last modified: Saturday, 16 June 2012, 5:03 AM