1. Inā ʻeleʻele nā lau i ka māla holoʻokoʻa, he phytotoxicity paha ia;(no ka nele i nā meaʻai a i ʻole nā maʻi, ʻaʻole paha e hemo koke ka māla holoʻokoʻa).
2. Inā he sporadic, he hapa o ka mea kanu e melemele ana a aia ke kaʻina hana, ʻaʻole paha ia i nā meaʻai, nā maʻi aʻa a i ʻole nā maʻi lau.
3. Inā he ʻōmaʻomaʻo ka lau, akā melemele nā aʻa, he hao a he magnesium paha.Hiki iā mākou ke hoʻomau i ka mahele.Inā melemele nā lau kahiko a ʻaʻole melemele nā lau hou, hiki ke ʻike ʻia he hemahema magnesium;inā ʻaʻole melemele nā lau kahiko a melemele nā lau hou, hiki ke ʻike ʻia he hemahema hao.
4. Inā melemele nā aʻa o nā lau melemele a ʻōmaʻomaʻo nā aʻa, hiki ke ʻike ʻia he maʻi virus.
5. Inā loaʻa nā kiko melemele ma nā lau melemele, a ua necrosis mālie ka macula, hiki ke ʻike ʻia he maʻi fungal ma nā lau.
6. Inā maloʻo nā lau melemele ma ka lihi o ka lau ma mua, akā mau nā aʻa a me nā aʻa, hiki ke ʻike ʻia ʻo ia ka pōʻino o ke aʻa a i ʻole ka pōʻino fertilizer.
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Ka manawa hoʻouna: Dec-11-2020