8 1 NATURAL PESTICIDES – 8.9 - BIOLOGICAL CONTROL OF PESTS

 

ORGANIC FARMING COURSE AGRO-ECONOMY

8 1 NATURAL PESTICIDES – 8.9 - BIOLOGICAL CONTROL OF PESTS 

 

Biological control is the use of natural enemies to manage populations of pests (such as ladybird beetles, predatory gall midges, hoverfly larvae against aphids and psyllids) and diseases. This implies that we are dealing with living systems, which are complex and vary from place to place and from time to time. 

 

TEXT in the picture:

Population maxima, Number of pests , number of predators

Population dynamics of pests and predators: the y-axis shows the size of the pest and predator populations, the x-axis their development in time

 

KOZI YA KILIMO HAI KILIMO-UCHUMI                                                                           

8.1 DAWA ASILI ZA WADUDU - 8.9 - UDHIBITI WA WADUDU WA KIBIOLOJI

Udhibiti wa kibayolojia ni matumizi ya maadui asilia kudhibiti idadi ya wadudu (kama vile mbawakawa, wadudu waharibifu, mabuu ya hoverfly dhidi ya aphids na psyllids) na magonjwa. Hii ina maana kwamba tunashughulika na mifumo ya maisha, ambayo ni tata na inatofautiana kutoka mahali hadi mahali na mara kwa mara.

TEXT kwenye picha:

Idadi ya watu maxima, Idadi ya wadudu, idadi ya wanyama wanaokula wenzao

Mienendo ya idadi ya wadudu na wanyama wanaowinda wanyama wengine: mhimili wa y unaonyesha saizi ya wadudu na wanyama wanaowinda wanyama wengine, mhimili wa x maendeleo yao kwa wakati.

FIGURE 8-9- POPULATION DYNAMICS OF PESTS AND PREDATORS