Nā ʻAno Hana Hōʻoia i nā Maʻi Mea Kanu
ʻO ka ʻike ʻana i nā maʻi mea kanu ke kaʻina hana o ka ʻike ʻana, ka hōʻoia ʻana, a me ka wehewehe ʻana i ke kumu o kahi maʻi mea kanu—inā paha ma muli o nā pathogens (fungi, bacteria, viruses), nā mea ʻino, nā nāhelehele, a i ʻole nā mea olaola ʻole e like me ka nele o nā meaʻai, ka ʻawahia, ka pH lepo kūpono ʻole, ka maloʻo, a i ʻole ka hōʻino ʻana o nā pesticides. He mea nui nā ʻano hana ʻike pololei no ka mea e hilinaʻi nui ʻia nā hoʻoholo kaohi ma ka ʻike ʻana i ke kumu. Hiki i ka ʻike hewa ke alakaʻi i nā hana kaohi pono ʻole, ka hoʻonui ʻia o nā kumukūʻai, a me ka hoʻonui ʻia o ka hōʻino ʻana i nā mea kanu. Kūkākūkā kēia ʻatikala i nā ʻano hana kūpono a me ka ʻōnaehana no ka ʻike pololei ʻana i nā maʻi mea kanu.
1. E hoʻomaopopo i ke kumumanaʻo kumu: nā hōʻailona vs nā hōʻailona
ʻO ka hana mua i ka ʻike ʻana, ʻo ia ka hoʻokaʻawale ʻana ma waena o nā hōʻailona a me nā hōʻailona.
– ʻO nā hōʻailona nā loli i nā mea kanu i ʻike ʻia ma muli o nā haunaele, no ka laʻana me nā lau melemele, nā kiko, ka mae ʻana, ka pala ʻana, ka palupalu, a i ʻole ka ulu ʻana o ka mea kanu.
– ʻO nā hōʻailona he hōʻike pololei ia o ke alo o ka meaola kumu, no ka laʻana me ka mycelium fungal, nā spores, ka slime bacteria, nā kino hua, a i ʻole nā kolone fungal ma ka ʻili o ka lau.
I nā hihia he nui, hiki ke like nā hōʻailona ma muli o ke kumu. No ka laʻana, hiki ke hana ʻia nā lau melemele e ka nele o ka naikokene, ka hōʻino ʻana o ke aʻa, ka maʻi viral, a i ʻole ka wai maikaʻi ʻole. No laila, he mea nui ka ʻike ʻana i nā hōʻailona o nā pathogens a me ka hōʻoia ʻana iā lākou ma o ka hoʻāʻo ʻana.
2. Nā nānā ʻana ma ke kahua ʻōnaehana
Hoʻomaka nā ʻano hana hōʻoia kahua ma ka "heluhelu ʻana" i nā ʻano hoʻouka. Ua ʻike ʻia kekahi mau mea:
1. ʻAno hoʻolaha ma ka ʻāina
– Ka pālahalaha like ʻana: pili pinepine i nā mea olaola ʻole (ka nui o ka mea hoʻomomona, ka pH kūpono ʻole, ka maloʻo) a i ʻole nā hua/ʻano pilikia.
– ʻAno ʻāpana ʻole: pili pinepine ʻia me nā pathogens i lawe ʻia e ka lepo, nā nematodes, a i ʻole nā pilikia hoʻokahe wai kūloko.
– Ke hahai nei i ke kuhikuhi o ka makani a i ʻole ka pīpī wai: he mea maʻamau ia i nā fungi/bacteria e lele ana i ka lewa a me ka ua/pīpī wai.
2. ʻO ka ʻāpana o ka mea kanu i hoʻouka ʻia
– Nā lau ʻōpio vs nā lau kahiko: ʻo kekahi mau hemahema meaʻai e kikoʻī loa ia, no ka laʻana, ʻoi aku ka maopopo o ka naikokene i nā lau kahiko, ʻoiai ʻo ka hao i nā lau ʻōpio.
– Nā aʻa, ke kumu o ke kumu, a i ʻole nā wana: hoʻomaka ka pala o ke aʻa a me ka mae ʻana ma ke aʻa/kumu.
3. Ke kahua o ka mea kanu a me ka manawa o ka hanana
ʻIke ʻia kekahi mau maʻi ma nā pae kikoʻī. No ka laʻana, ʻike ʻia ka damping-off i ka wā o ka ulu ʻana o nā mea kanu, ʻoiai ʻike pinepine ʻia nā maʻi hua i ka wā o ka pua a me ka hoʻokumu ʻana o nā hua.
4. Ka mōʻaukala mahiʻai
E hoʻopaʻa i ke ʻano like ʻole, ke kumu hua, ka hoʻoulu ʻana, ka papa hana hoʻoinu wai, ka hoʻohana ʻana i nā pesticides, ka hoʻololi ʻana i nā mea kanu, a me nā kūlana o ke aniau. Kōkua kēia ʻike i ka hoʻohaiki ʻana i ke kuhi ʻana.
3. Ka hōʻoia ʻana ma muli o ke ʻano o nā hōʻailona nui
ʻO kekahi mau hōʻailona koʻikoʻi a me nā kumu kūpono:
– Nā kiko lau: pinepine ʻia e nā fungi (e.g., Cercospora, Alternaria) a i ʻole bacteria. E nānā i ke ʻano o nā kiko, nā lihi (ʻoi a palahalaha paha), a me ke alo o kahi halo melemele.
– Wili ʻana: hiki ke hana ʻia e ka maloʻo, ka hōʻino ʻana o ke aʻa, nā maʻi vascular (Fusarium, Verticillium), a i ʻole bacteria (Ralstonia). ʻO ka wili ʻana e hoʻi hou mai ana i ke awakea/ahiahi e pili pinepine ana i ka wai, ʻoiai ʻo ka wili mau loa e pili pinepine ana i ka pathogen.
– Pala: hiki ke pala pulu (bacteria) a pala maloʻo paha (fungal). ʻO kahi ʻala pilau a me ka ʻiʻo palupalu e hōʻike pinepine ana i ka bacteria.
– Mosaic, mottled, lau wili: pili pinepine me nā virus/phytoplasmosis, akā hiki ke hoʻohālike i ka lāʻau make herbicide. E nānā pū i nā ʻano ma nā mea kanu he nui, ke alo o nā vectors (aphids, whiteflies), a me ka mōʻaukala pīpī.
– Ka ulu ʻana o ka ʻōpū a me ke ʻano ʻē: hiki ke hana ʻia e nā maʻi, nā nematode, a i ʻole ka nele i nā meaʻai.
ʻO kēia ʻano hana he "diagnostic mua," no ka mea, he nui nā hōʻailona e pili pū ana. No laila, pono ka hōʻoia hou aʻe.
4. Nānā maʻalahi ma ke kahua
Aia kekahi mau hoʻāʻo wikiwiki e hiki ke hana me ka ʻole o kahi hale hana:
1. E nānā i nā aʻa a me ke kumu o ke kumu
E wehe pono i ka mea kanu. ʻO ke aʻa ʻeleʻele, pala, a pilau paha e hōʻike ana i ka pala o ke aʻa. ʻO ke aʻa pehu a puʻupuʻu paha e hōʻike ana i nā nematodes knot root.
2. Hoʻāʻo "kahe" bacteria
E ʻoki i kahi kumu i manaʻo ʻia ua loaʻa i ka maʻi bacterial wilting a hoʻoluʻu i ka wēlau i ʻoki ʻia i loko o ka wai māʻemaʻe. Inā puka mai kahi "kahawai" lahilahi e like me ka uahi o ka slime keʻokeʻo, he hōʻailona ikaika kēia o ka maʻi bacteria.
3. E ʻimi i nā hōʻailona o ka fungus
E nānā i ka ʻili o nā lau a i ʻole nā kumu i ke kakahiaka pulu: ʻo ka mycelium e like me ka pulupulu, ka pauka mildew, a i ʻole nā spores kala paha nā hōʻailona.
4. ʻOki ʻana i ka pūnaewele
E ʻoki i ke kumu/ʻōpuʻu/hua e nānā i ke ʻano o ka loli ʻana o nā aa koko, nā kiko ʻeleʻele i loko o nā ʻiʻo o loko, a i ʻole ka lihi o ka pala.
5. Ka hāpana pololei
ʻO kahi hāpana maikaʻi ʻole e hopena i kahi hōʻailona hewa. Nā kumumanaʻo hāpana:
– E lawe i nā ʻāpana o ka mea kanu e hōʻike wale ana i nā hōʻailona mua (ʻaʻole nā mea i pala loa), no ka mea, hiki ke ʻike ʻia nā pathogens hana.
– E hoʻokomo i nā ʻāpana hoʻololi ma waena o nā ʻiʻo olakino a me nā ʻiʻo maʻi.
– E lawe i kekahi mau laʻana mai nā wahi like ʻole e hōʻike i ke kūlana o ka ʻāina.
– E mālama i loko o kahi pahu maʻemaʻe, ka lepili (kahi, lā, ʻano like ʻole, makahiki o ka mea kanu, nā hōʻailona), a e pale i ka wela nui e pale aku i ka hōʻino ʻana i ka hāpana.
– No ke kānalua ʻana i kahi maʻi, koho i kahi lau ʻōpiopio e hōʻike ana i ke ʻano mosaic maopopo loa.
6. Ka hōʻoia ʻana o ka hale hana: mai ka microscopy a i ka hoʻāʻo molekala
Inā koi ʻia ka maopopo kiʻekiʻe, e hana i nā hoʻokolohua hale hana:
1. Ka hoʻokaʻawale ʻana a me ka moʻomeheu ʻana o nā pathogens
No nā fungi a me nā bacteria, ua ulu ʻia nā laʻana ma nā pāpaho kikoʻī. Kōkua ke ʻano o ke kolone, ke kala, a me ke ʻano microscopic i ka ʻike ʻana. He mea maʻamau kēia i nā keʻena hoʻokolohua palekana mea kanu.
2. Hoʻokolokolo microscopic pololei
ʻO ka nānā ʻana i nā spores fungal, conidia, a i ʻole nā hale ʻē aʻe mai nā ʻiʻo maʻi e hiki ke wikiwiki i ka ʻike ʻana.
3. Nā hoʻokolohua serological (e.g. ELISA)
Hoʻohana nui ʻia ia e ʻike i kekahi mau virus me kahi kiʻekiʻe o ka pololei.
4. Hoʻāʻo molekala (PCR/RT-PCR)
Hoʻohana ʻia no ka ʻike pololei ʻana i nā pathogens, ʻoiai nā virus, nā phytoplasmas, a me kekahi mau fungi/bacteria i paʻakikī ke hoʻokaʻawale ʻia ma ka ʻike maka.
5. Ka hoʻāʻo ʻana i ka lepo a me ka nānā ʻana i nā meaʻai
Mai hoʻowahāwahā i nā mea olaola ʻole. ʻO ka nānā ʻana i ka pH, EC (salinity), ka nui o ka NPK, nā micronutrients, a me nā koena e hiki ke wehewehe i nā hōʻailona "like me ka maʻi".
7. Ke hana ʻana i nā hoʻoholo: ka huinakolu maʻi a me nā kumu kaiapuni
ʻO kahi hōʻailona maikaʻi e noʻonoʻo ana i ka huinakolu maʻi: kahi kikowaena hiki ke hoʻopilikia ʻia, kahi pathogen virulent, a me kahi kaiapuni maikaʻi. No ka laʻana, ulu maikaʻi kekahi mau fungi i ka haʻahaʻa kiʻekiʻe a me ka holo ʻana o ka ea maikaʻi ʻole. No laila, inā ʻike ʻia nā hōʻailona ma hope o ka ua lōʻihi a me kahi māla ulu nui, ʻoi aku ka nui o ka maʻi fungal. I ka ʻaoʻao ʻē aʻe, ʻo nā hōʻailona e ʻike ʻia ma hope o ka hoʻoulu nui ʻana a i ʻole ka pīpī ʻana i ka herbicide e kuhikuhi paha i ka ʻawahia a i ʻole ke kaumaha physiological.
8. Nā hewa maʻamau i ka ʻike ʻana i nā maʻi mea kanu
ʻO kekahi mau hewa maʻamau:
– Ke manaʻo nei i nā hōʻailona āpau he mau maʻi lele, ʻoiai paha ma muli o ka nele i nā meaʻai a i ʻole ka phytotoxicity o ka pesticide.
– Ke nānā wale nei i nā lau me ka nānā ʻole i ke aʻa a me ke kūlana o ka lepo.
– Ke lawe ʻana i nā laʻana i hōʻino nui ʻia i hiki ai i nā pathogens lua ke noho aliʻi a uhi i ke kumu nui.
– Hoʻowahāwahā i ka mōʻaukala o ka ʻāina, ka hoʻololi ʻana, a me ke kumu o ka hua.
– Ke hilinaʻi nei ma luna o hoʻokahi wale nō hōʻailona me ka ʻole o ka hōʻoia.
9. Nā ʻōlelo aʻoaʻo hana maikaʻi loa
No ka hoʻonui ʻana i ka pololei o ka diagnostics, e hoʻokō i nā lula aʻe:
- E mālama i nā moʻolelo māla: ka lā kanu, ka hoʻoulu ʻana, ke aniau, a me nā hoʻouka kaua i hala.
– Nā nānā maʻamau: ʻoi aku ka maʻalahi o ka ʻike ʻana i ka wā e hoʻomaka mua ai nā hōʻailona.
– E hoʻohana i kahi ala hana ʻanuʻu: nānā kahua → nā hoʻokolohua maʻalahi → hōʻoia lab inā pono.
– E kūkākūkā me kahi limahana hoʻonui kūloko a i ʻole ke keʻena hoʻokolohua inā ʻaʻole maʻamau nā hōʻailona a i ʻole kiʻekiʻe nā pohō hiki ke loaʻa.
– Ma hope o ka nānā ʻana, koho i kahi hoʻolālā kaohi i hoʻohui ʻia (IPM): ka hoʻomaʻemaʻe, nā ʻano kū i ke kūlana kiʻekiʻe, ka hoʻokaʻawale ʻana i nā mea kanu, ka mālama wai, a me ka hoʻohana pono ʻana i nā pesticides.
Pani
ʻAʻole wale nā ʻano hana ʻike maʻi mea kanu he kuhi wale nō ma muli o nā hōʻailona "like", akā he kaʻina hana ʻōnaehana e hoʻohui pū ana i nā nānā ʻana ma ke kahua, ka nānā ʻana i nā hōʻailona pathogen, ka laʻana kūpono, a me ka hōʻoia ʻana ma o ka hoʻāʻo ʻana i ka hale hana, inā pono. Me nā hōʻailona pololei, hiki i nā mahiʻai a me nā mea hana ke hoʻoholo i nā ana kaohi i kuhikuhi ʻia, hoʻemi i nā pohō hana, a mālama i ka hoʻomau ʻana o ka agroecosystem. ʻO ka mea hope loa, ʻo ka hōʻailona kūpono ke kumu o ka hoʻokele olakino mea kanu kūpono a kuleana.
