The problems in the tea garden

Within agricultural ecosystems are classified as living groups of predators , parasitoids , and pathogens . The third group called the natural enemies to control pest populations . Without the workings of natural enemies , pests will multiply quickly so can damage the plant .

Predator is a group of natural enemies throughout his life eating its prey . Predator has a relatively large body shape so easily seen . Examples are important predators that prey on mites Amblyseius mites deleoni orange , Brevipalpus phoenicis on tea .

Has a host -specific parasitoids are relatively small , making it difficult to see . Generally , only require an insect parasitoid host . Parasitoids lay their eggs in groups or individual inside or outside the body of its host . When an egg parasitoid hatch and develop into adults , then the host will soon die . Parasitoids can attack eggs , larvae , nymph , pupa or imago host .

Tea Plant Pests :

• Helopeltis antonii

Adult insects such as mosquitoes , attacked the tea leaves and young twigs . Part of being attacked mottled dark brown and dry . Attacks on twig branches can cause cancer . Control : plucking the stringed 7 day cycle , balanced fertilization , sanitation , mechanical , and Tenodera Hierodula predators , nthio 330 EC Insecticide , Carbavin 85 WP , Mitac 200 EC .

• Caterpillar inch ( Hyposidra talaca , Ectropis bhurmitra , peppered suppressaria )

Caterpillars are black or brown striped white , attack young leaves , shoots , and leaves the old , can attack in the garden or nursery . Who attacked toothed leaves / perforated . Control : clean up litter and weeds , balanced fertilization and insecticide Lannate 35 WP , Lannate L.

• Leaf roller caterpillar ( Homona aoffearia )

1-2.5 cm sized caterpillars attack young and old tea leaves . Leaves rolled and folded . Control : mechanical way , removing biological enemies such as Macrocentrus homonae , Elasmus homonae , insecticides Ripcord 5 EC .

• Caterpillar roller shoots ( Cydia leucostoma )

Caterpillar measuring 2-3 cm inside the tea shoots roll . Control : how mechanical , biological Apanteles by releasing natural enemies and insecticides Bayrusil 250 EC , Dicarbam 85 S , Sevin 85s .

• Caterpillar fire ( Setora Nitens , Parasa lepida , Thosea )

Hairy caterpillars attack young and old leaves , plants become perforated . Control : how mechanical , biological insecticides by removing parasites and Ripcord 5 EC and Lannate L.

• Mites orange ( Brevipalpus phoenicis )

0.2 mm -sized orange , attacking an old tea leaves at the bottom surface . There is a small spot at the base of the leaves , the mites form colonies at the base of the leaf , then attack towards the end of the leaves , the leaves dry up and fall off . Control : mechanical means , weed control , fertilizing , predator Amblyseius , insektisda Dicofan 460 EC , Gusadrin 150 WSC , Kelthane EC 200 , EC 570 ommittee .


Pest problems usually arise as a result of a combination of elements of the work environment that suits both biotic ( plants or food ) and abiotic ( climate , weather , and soil ) , as well as human intervention that can support the growth and development of pest populations . Therefore , monitoring of intensive cropping ecosystems routinely by farmers is the basis for decision-making ecosystem analysis and take action as necessary.

Pest population monitoring activities intended to determine whether the pest population has surpassed the level of economic damage . This is intended to control the pest population is not too late . In the event of pest population levels are not determined by counting the number of individual pests in the field overall , but with a suspect pest populations by sampling techniques .

Monitoring of populations at planting is recommended once a week , from early plant growth until harvest . The number of individual pests in the field is calculated by a single plant sample unit or the number of plants per unit area . In this case keep in mind that the unit large number of small samples provide data more credible than that of the sample units are few. Monitoring activities are also carried out on the type and population of natural enemies , and the state of the plant .

Monitoring methods are generally done in several ways , namely :

• Random using a random number table in a habitat unit
• Random stratified , that is by dividing the land into several strata which do not overlap then the number of sample units distributed proportionally to each stratum and randomly placed
• Random diagonal , ie by taking random samples in field land diagonally
• Systematic , namely by taking samples at an interval of space or time. Selection of the monitoring methods are generally based on the provisions relating to the level of confidence and sampling costs .