Weed Control Process In Cassava Cultivation In The Southeast 08/06/2021

WEED CONTROL PROCESS IN CASSAVA CULTIVATION IN THE SOUTHEAST

Weed control in agricultural production in general and for cassava in particular is very difficult and costly. If we do not have the right method and technique, we will not completely destroy the weeds, helping the cassava plant to grow well for the highest yield and save costs.

Today, Mobile Plant Doctor  would like to share with you, cassava growers "Technology of using herbicides in cassava cultivation in the Southeast" as follows:

1/ SPRAY HERBICIDE FOR THE 1st time:

- After planting 3-5 days (let surface of soil shrink )

- Spray in the early morning when there is dew, the soil is still wet

- Use herbicide SAICOBA 500EC - Dosage 1.2 liters / ha, mixed in 400 liters of water (corresponding to 40-45ml / 16 -liter- watertank)

- If the field is left with old weeds  before planting, use an additional amount of 1.5-2.0 liters/ha.

2/ SPRAY HERBICIDE FOR THE 2nd time:

- After planting 2.5-3 months.

- The cassava plant has a height greater than 40cm.

Or when entering the rainy season, prepare for additional fertilizing

- Use herbicide FASFIX 150SL

- Dosage 2.0-2.5 liters/ha, mixed in 400 liters of water (corresponding to 80-100ml/16-liter water tank)

- Using a directional spray nozzle, spray close to the ground about 10cm, avoiding spraying on cassava buds.

- After 5 days of spraying, the weeds gradually dies and up to 10 days the weeds dies completely.

 You guys, fellow farmers apply additional fertilizer for cassava

.Wishing you guys and fellow farmers a bumper crop and a good price.

 

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To prevent, in addition to plowing and burying weed seeds, collecting weed stalks and stumps left after tilling the land to burn, not letting weeds produce seeds in production fields, etc., the use of chemical products is still a measure. optimal because of its ability to thoroughly kill weeds, reduce labor and take advantage of more time than manual weeding.To prepare for the coming Summer-Autumn rice crop, we would like to introduce to you a very new product of Saigon Plant Protection Joint Stock Company, which is Butoxim 5GR. This is a granular product used for spreading by Saigon Plant Protection Joint Stock Company in research, production and distribution.

 

 Miner has the scientific name Phyllocnistis citrella Staint., family Phyllocnistidae, order Lepidoptera. The  miner occurs in many countries in the tropics and subtropics. The main host of the miner is the citrus family - Rutaceae. In addition, the miner also attacks mangosteen and some other plants.

 

Adult is a small planthopper, with a body 2-3 mm long, the whole body is ash gray, slightly greenish, the wings are opaque with many small brown spots.Eggs are oval, 0.3 mm long, have a pointed end and are attached directly to the leaf surface, leaf axils.Larvae are very small, oval in shape, newly hatched are bright yellow. Age 2 and age 3 are in green. Age 4 and age 5 are golden brown and 2 small wing sprouts.

 

Green bugs specialize in the fruit of citrus groups (oranges, tangerines, lemons, grapefruits, kumquats...), some people call them orange bugs, or orange suckers. Their scientific name is Rhynchocoris poseidon or Rhynchocoris humeralis.

 In Vietnam, yellow leaf curl disease is very common on papaya trees, especially the disease is often severe in areas of high and continuous planting, areas with hot and arid climates. The disease has significantly reduced the yield and quality of papaya. Gardens that are infected early when the plants are young may not yield. However, up to now, many gardeners still do not know the cause and how to fix it.

 

 Spider mites are common pests on citrus trees, especially in hot and dry climates that are suitable for spiders to grow and cause severe damage.The group of harmful spiders is usually very small in size, unlike the natural enemy spiders.Spiders have a very short life cycle, high reproductive ability, create many generations in a year, so it is easy to break out into epidemics in a short time.

 

 This group includes species that are generally very small in size, causing damage by sucking plant sap (on leaves, fruits, branches, stems).

There are many species of mealybugs present on the group of Oranges,Tangerines,Grapefruits and Lemons (Citrus), which can be divided into 2 groups:

+ Group of sticky mealybugs with common varieties such as Lepidosaphes, Aonidiella, Coccus and Saissetia.

+ Group of flower mealybugs with common genera and species such as Pseudococcus, Planococcus and Icerya purchasi.

Dry branches and berries disease often appear to be common damage on coffee gardens during the rainy season. The disease causes death of branchs, dry fruit, severely affects the canopy structure and coffee yield if not paid attention to prevention.

  

 Pink disease commonly causes diseases on rubber plantations in the rainy season, especially on garden from 4-8 years old. This year, rubber has to go through a period of severe drought, weakening the tree, so now in tnshe rainy season it is easy to get infected. Therefore, it is necessary to pay attention to good management to avoid affecting the garden.

In recent years, the area of citrus has been expanded because it is a fruit tree with high economic efficiency. However, in order to sell at a high price, not only in quality but consumers also require the external beauty of the fruit, so pest management on citrus is a matter of great concern to farmers. The hot season is a favorable condition for thrips to develop and cause damage, affecting the commercial value of fruit.

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