8 1 NATURAL PESTICIDES – 8.15 - A LOT OF MORE NATURAL PESTICIDES

 

ORGANIC LESSONS COURSE AGRO-ECONOMY

8 1 NATURAL PESTICIDES – 8.15 - A LOT OF MORE NATURAL PESTICIDES

 

There are many other extracts of plants known to have insecticidal effects like

tobacco (Nicotiana tabacum), yellow root (Xanthorhiza simplicissima),

fish bean (Tephrosia vogelii), violet tree (Securidaca longepedunculata), and

nasturtium (Nasturtium trapaeolum) which are traditionally used to control pests in Africa.  Anise, chillies, chives, garlic, coriander, nasturtium, spearmint and marigold

 

There are plants known to have a repellent effect on different pest insects (aphids, moths, root flies, etc.) and can be grown as intercrop or at the border of crop fields:

Marigold is especially known to deter root nematodes, while neem cake is known to deter mice.

 

TEXT in the picture:

Trap cropping (push – pull strategy) in Maize for pest stalk borer.

Trap plant (napier gras)

 Rebellant plant (desmodium)

Trap plant

The trap plant is more attractive to the pest either alternative food source or egg laying site than the main crop.

Repellent crop produces an odour that “pushes” away pests.

 

FIGURE 8-15 - TRAP CROPPING - TRAP INTERCROPPING

 

MASOMO HAI KOZI YA KILIMO-UCHUMI

8 1 DAWA ASILI ZA WADUDU – 8.15 - NYINGI ZAIDI YA DAWA ZA ASILI

 

Kuna dondoo zingine nyingi za mimea inayojulikana kuwa na athari za wadudu kama

tumbaku (Nicotiana tabacum), mizizi ya manjano (Xanthorhiza simplicissima),

maharagwe ya samaki (Tephrosia vogelii), mti wa urujuani (Securidaca longepedunculata), na

nasturtium (Nasturtium trapaeolum) ambayo kwa jadi hutumika kudhibiti wadudu waharibifu barani Afrika. Anise, pilipili, chives, vitunguu, coriander, nasturtium, spearmint na marigold.

Kuna mimea inayojulikana kuwa na athari ya kufukuza wadudu mbalimbali waharibifu (aphid, nondo, nzi wa mizizi, n.k.) na inaweza kukuzwa kama mseto au kwenye mpaka wa mashamba ya mazao:

Marigold inajulikana sana kuzuia nematode za mizizi, wakati keki ya mwarobaini inajulikana kuwazuia panya.

TEXT kwenye picha:

Upandaji wa mtego ( mkakati wa kusukuma - kuvuta) katika Mahindi kwa vipekecha shina wa wadudu.

Kiwanda cha mtego (napier gras)

Mmea ulioasi (desmodium)

Mtego wa kupanda

Mmea wa kutega huvutia zaidi wadudu ama chanzo mbadala cha chakula au mahali pa kutagia mayai kuliko zao kuu.

Mazao ya mbu hutoa harufu ambayo "husukuma" wadudu.

KIELELEZO 8-15 - KUPANDA KWA MITEGO - KUPATA MTEGO