Anthracnose (Colletotrichum gloeosporioides), brown spot (Gliocephalotrichum microchlamydosporum) and stem-end rot (Botryodiplodia theobromae) are the three major postharvest diseases of Malwana special selection rambutans in Sri Lanka (Sivakumar et al., 1997).
What is the scientific name of the most serious pest of rambutan?
The major disease observed was fruit rot caused by Colletotrichum gloeosporioides. Hence, there is an urgent need to standardize the management strategies for controlling pests and diseases of this newly emerging crop as they have invaded the major rambutan growing tracts of Kerala.
Why are my rambutan leaves turning brown?
Most commonly brown leaf tips or brown edges on leaves are caused by the plant not getting enough water. There are several reasons why this may happen. There may be too little natural water falling. If this is what is causing the sides of the leaf to turn brown, you should supplement the rainfall with manual watering.
Why does rambutan turn black?
Don’t buy rambutans that have turned black or have a lot of black “hairs,” as this indicates they are over-ripe. If you need to store your fresh rambutans, wrap them in a paper towel and put them in a perforated plastic bag and store them at high humidity in the refrigerator.
What are the 4 main types of pests?
There are four different types of pests – rodents, insects, birds and wildlife.
What are the common pests and diseases?
Pests and diseases can also affect the plants in your home. Houseplant damage can result from pests such as aphids, mealybugs, mites, scale, thrips, and whiteflies. Common diseases include anthracnose, leaf spots, and powdery mildew, as well as root and stem rots.
What is the best fertilizer for rambutan?
Rambutan Tree Care
Fertilize with a food that is 55g potash, 115g phosphate, and 60g urea at six months and again at one year of age. At two years old, fertilize with a food that is 165g potash, 345g phosphate, and 180g urea. At the third year, apply 275g potash, 575g phosphate, and 300g urea every six months.
How long does it take for a rambutan tree to produce fruit?
You’ll need to wait around five years for the tree to begin producing fruits. I recommend planting a rambutan seed in a pot, with some sand or black cinderincluded in the soil for added drainage.
How do you prune rambutan trees?
Light annual pruning of crossing branches, dead and diseased twigs and water shoots recommended for rambutan. After harvesting, fruited twigs are pruned back to stimulate new growth of up to 4 new side shoots, of which 22% of the shoots will bear fruit in the following season.
Can Brown leaves turn green again?
The brown leaf tips will not turn back to green but you can trim the brown edges to get the plant back to looking healthy. Find out more here. If your are noticing brown patches all over the leaves, this could also be a sign of overwatering.
How do you fix brown leaves on plants?
Use sharp scissors to cut away the dead, brown areas. Just follow the leaf’s natural shape. You’ll still have a thin brown line along the cut, but the rest of the leaf will stay green and healthy as your plant moves ahead.
Should I cut off brown leaf tips?
Should you cut off dying leaves? Yes. Remove brown and dying leaves from your house plants as soon as possible, but only if they’re more than 50 percent damaged. Cutting off these leaves allows the remaining healthy foliage to receive more nutrients and improves the plant’s appearance.
Why rambutan easily turns brown and shrivels fast?
Rambutan (Nephelium lappaceum L.) rapidly lose their attractive appearance after harvest due to a superficial pericarp browning. Storage at high humidity minimizes fruit desiccation and may, therefore, delay browning onset. This paper examines the effect of reduced water loss rate on browning that may occur with time.
Can rambutan be poisonous?
The flesh of the rambutan fruit is safe to eat. However, its peel and seeds may be toxic when eaten raw or in very large amounts.
What is the life cycle of a rambutan?
Rambutans are propagated by grafting, air-layering, and budding. Budded trees may fruit after two to three years with optimum production occurring after eight to 10 years. Trees grown from seed bear after five to six years.
How do you control pests and diseases?
Chemical pesticides are often used to control diseases, pests or weeds. Chemical control is based on substances that are toxic (poisonous) to the pests involved. When chemical pesticides are applied to protect plants from pests, diseases or overgrowth by weeds, we speak of plant protection products.
How do you control pests?
Try pest prevention first.
- Remove sources of food, water and shelter.
- Store food in sealed plastic or glass containers.
- Fix leaky plumbing and don’t let water accumulate anywhere in the home.
- Clutter provides places for pests to breed and hide and makes it hard to get rid of them.
What are the 3 methods of pest control?
As mentioned above, there are many pest control methods available to choose from, but they can be loosely grouped into six categories: Hygienic, Biological, Chemical, Physical, Fumigation, Fogging and Heat treatment.
What are the diseases in plants?
Common Plant Diseases
- Black Spot.
- Other Leaf Spots.
- Powdery Mildew.
- Downy Mildew.
- Blight.
- Canker.
How do you identify plant diseases?
Leaf spots, fruit rot, wilt and unusual plant growth or color can all be symptoms of a plant disease problem.
What are the 5 major categories of pests give an example for each?
Five Groups of Pests
Arthropods – Insects, Mites, Ticks and Spiders 2. Vertebrates – Animals with backbones 3. Weeds 4. Pathogens – Disease-causing organisms 5.
Justin Shelton is a professional cook. He’s been in the industry for over 10 years, and he loves nothing more than creating delicious dishes for others to enjoy. Justin has worked in some of the best kitchens in the country, and he’s always looking for new challenges and ways to improve his craft. When he’s not cooking, Justin enjoys spending time with his wife and son. He loves exploring new restaurants and trying out different cuisines.