Monday, March 24, 2008
Rubber Nursery Management
Choosing a Right Variety of Rice
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Wednesday, March 19, 2008
Flower Induction in Durian
Durian has often been described as "a fruit that tastes like heaven b
However, to the ordinary durian consumers who are mostly minimum wage earners, the "hell"
pact is not the smell but rather the price,especially during the off-season, when prices could
become prohibitively high due to scarcity of supply.
But thanks to a study conducted by Roman Armenio, Jr., Myrna S. Cantilla and Milani Abad of
the Department of Agriculture-Southern Mindanao Integrated Agriculture Research Center
(DA-SMIARC), it is now possible to produce durian anytime of the year.
According to the study entitled "Flower induction in durian", certain growth regulators such as
Paclobutrazol and Multi-K, when sprayed on durian trees of bearing age at the time when the
flushes (new leaves) are already mature, will promote off-season flowering 10 to 21 days from
application.
The study further revealed that average number of off-season fruits production per tree was over 80 for those sprayed with Paclobutrazol and over 64 for those with Multi-K.
For durian farmers, this technology could mean additional income in terms of increased yield and
relatively higher prices during off-season while for the common durian consumer, more durian
fruit supply during off-season would eventually result to a slight decrease in prices.
Durian Pest and Disease Control Management
| Insects | PlantParts/Stage of Growth Attacked | Control Measures |
| Beetles | Young seedlings | Spray with Roxion or Azodrin |
| Twig borers | Young plants, small branches or twigs of old trees | Prune damaged branch and burn |
| Psyllids | New shoots and leaves in young and old trees | Spray with Roxion, Azodrin or Decis |
| Brown scale | Young shoots and leaves | Spray with Roxion or Azodrin |
| Haplaphalora sp. (Bao-bao) | Young shoots, leaves, unopened flowers and fruitlets | Spray with Decis, Roxion or Gusathion |
| Diseases | PlantParts/Stage of Growth Attacked | Control Measures |
| Path canker or stem canker | Roots, trunk | Spray with Ridomil or Alliete |
| Pink diseases | Twigs and smaller branches | Spray with Tridemorph (Calixim); Triadimefon (Bayleton); Copper hydroxide (Kocide) or Bordeaux mixture |
| Rhizoctonia | Foliage | Spray with Triamefon- Bayleton, Thiophanate methyl (Topsin M) |
source: http://209.85.175.104/search?q=cache:y0DT5-jmY38J:www.da.gov.ph/
wps/wcm/connect/resources/file/eb590c401514538/DURIAN.pdf+
distance+of+durian+during+planting&hl=tl&ct=clnk&cd=4&gl=ph
Durian Cultural Management
Land Preparation
- Clear and remove all stumps and grasses.
- Plow twice and harrow thrice to loosen the soil.
- 5 x 10 meters = 200 plants/ha.
- 8 x 8 meters = 156 plants/ha.
- 10 x 10 meters = 100 plants/ha.
- Dig a cubical holes measuring 50-100 m wide and 50-100 cm deep for clay soil type.
- Remove the plastic bag and plant the seedling into the hole without breaking the ball of soil.
- Prune spiraled roots to enhance root branching.
- Plant young plants at their dormant stage.
- Cover the hole with soil-manure mixture and press gently the surface of the soil.
- Plant during rainy season.
- Provide shade to newly planted durian seedlings for a period of two weeks to a few months depending on weather condition to enable the plant to recover from transplanting shock and to shade it from strong sunlight.
- Apply as basal 50 grams (5 tbsp.) of complete fertilizer (14-14-14) or based on soil analysis and cover with thin layer of soil. Rate of application increases as tree matures.
- Grow seasonal crops between rows of durian before they become productive.
- Ring weeding should be done before fertilization.
- Prune/remove dead, broken or diseased branches and water shoots to obtain desired canopy shape to enhance production of fruits.
- Mulch the tree with rice straw, dried leaves, cut grasses, or coconut husk during dry season.
/wps/wcm/connect/resources/file/eb590c401514538/DURIAN.pdf+distance+
of+durian+during+planting&hl=tl&ct=clnk&cd=4&gl=ph
Durian Pests and Diseases
Very few diseases have been reported. In West Malaysia, patch canker caused by Phytophthora palmivora was first noted in 1934. It is becoming increasingly common on roots and stems of durian seedlings. Infection in the field begins at the collar with oozing of brownish-red gum and extends up the trunk and down to the roots. Sometimes a tree is completely girdled at the base and dies.
Testing of 13 clones showed that all but 2 were susceptible. The 2 resistant clones succumbed after the stems were wounded and inoculated. It is evident that pruning injuries have provided access for the organism. The disease is encouraged by close-planting which shades the soil and promotes dampness. Weeds, grass and mulch around the collar are also contributing factors.
Budded trees are particularly susceptible because of their habit of putting forth low branches and the occurrence of cracks where these join the main stem. When these low branches are pruned, the wound must be immediately treated with a fungicide.
Source:
Minor pests in the Philippines are the white mealybug (Pseudococcus lilacinus) and the giant mealybug (Drosicha townsendi) which infest young and developing fruits.
Very few diseases have been reported. In West Malaysia, patch canker caused by Phytophthora palmivora was first noted in 1934. It is becoming increasingly common on roots and stems of durian seedlings. Infection in the field begins at the collar with oozing of brownish-red gum and extends up the trunk and down to the roots. Sometimes a tree is completely girdled at the base and dies.
Testing of 13 clones showed that all but 2 were susceptible. The 2 resistant clones succumbed after the stems were wounded and inoculated. It is evident that pruning injuries have provided access for the organism. The disease is encouraged by close-planting which shades the soil and promotes dampness. Weeds, grass and mulch around the collar are also contributing factors.
Budded trees are particularly susceptible because of their habit of putting forth low branches and the occurrence of cracks where these join the main stem. When these low branches are pruned, the wound must be immediately treated with a fungicide.
Source: http://www.destinationtropicals.com/tropical_plants/plant_25.asp#Pests%20and%20Diseases
Tuesday, March 18, 2008
Summer Coming Up
- Putting fence around in our 3 hectares fruit farm(3 days alloted time)
- Create a small payag at the center of the farm(3 days alloted time).