Nā hōʻailona ʻōpala keʻokeʻo rapeseed a me nā ʻano pale

I kēia mau makahiki i hala iho nei, ua kiʻekiʻe ka nui o ka ʻōpala keʻokeʻo rapeseed, pili nui i ka maikaʻi o ka rapeseed.
Hiki i ka ʻōpala keʻokeʻo rapeseed ke hoʻopilikia i nā kino āpau ma luna o ka honua i ka wā ulu o ka rapeseed, ʻo ka nui o ka hōʻino ʻana i nā lau a me nā ʻōpala. I ka wā e maʻi mua ai nā lau, e ʻike ʻia nā wahi ʻōmaʻomaʻo liʻiliʻi me kahi halo melemele ma ke alo o nā lau, a e hoʻololi mālie i ka melemele a lilo i mau pōʻai pōʻai. E ʻike ʻia nā ʻala like me ke pena keʻokeʻo ma ke kua o nā lau. I ka wā e haki ai nā ʻōpala, e puka mai ka pauda keʻokeʻo. I nā hihia koʻikoʻi, ua melemele nā ​​lau a hāʻule. ʻO ke poʻo o ka pedicel maʻi ua pehu a ʻāwili ʻia, e lawe ana i ke ʻano o kahi "faucet", a ua pōʻino ke kino pua. Hoʻololi ʻia nā petals, hoʻonui ʻia, huli i ka ʻōmaʻomaʻo a me ka lau-like, ʻaʻole maloʻo no ka manawa lōʻihi a ʻaʻole ikaika. ʻO nā maʻi ma luna o ke kumu he mau ʻōpala keʻokeʻo oblong, a ua pehu a ʻāwili nā ʻeha.

ʻElua mau manawa kiʻekiʻe mai ka bolting a i ka pua piha. Hiki pinepine ka maʻi ma lalo o ka haʻahaʻa haʻahaʻa a me ka haʻahaʻa haʻahaʻa. ʻOi aku ka maʻi ma nā ʻāpana me ka ʻāina haʻahaʻa, ka wai maikaʻi ʻole, ka lepo kaumaha, ka hoʻoinu nui ʻana, ka ʻokoʻa nui o ka mahana ma waena o ke ao a me ka pō, ka condensation nui o ka hau, a me ka hoʻohana ʻana i nā mea momona nitrogen.
Hiki ke hoʻomaka ka pale ʻana a me ka mālama ʻana i kēia maʻi mai nā ʻaoʻao aʻe. ʻO ka mea mua, pono e koho i nā ʻano like ʻole i ka maʻi. ʻO ke ʻano o ka sinapi a me ka rapeseed he kūpaʻa loa, a ukali ʻia e ke ʻano kāpeti. Hiki keʻano o ke kāpena i nā maʻi a hiki ke kohoʻia e like me nā kūlana kūloko; ʻO ka lua, pono e hoʻololi me nā mea kanu mauʻu no 1 a 2 mau makahiki a i ʻole e hoʻololi i nā mea kanu ma waena o nā kahawai a me nā maloʻo; ʻO ke kolu, pono e hoʻopau loa i nā maʻi. ʻO nā mea kanu, ke ʻike ʻia nā "faucets", e ʻoki iā lākou i ka manawa a puhi ikaika iā lākou; ʻo ka hā, e hoʻomomona pono a hoʻomaʻemaʻe i nā ʻauwai a hoʻokahe i nā ʻili.

I ka wā bolting o ka rapeseed, Chlorothalonil75% WP 600 manawa wai, a i ʻole Zineb65% WP 100-150g/667 mau mika square, a i ʻole Metalaxyl25% WP 50-75g/667 Square mika, e hoʻopuʻi i ka 40 a 50 kilokani o ka wai i hoʻokahi manawa. i 10 mau lā, e hoʻopā i 2 a 3 mau manawa, hiki ke pale pono i ka hiki ʻana o nā maʻi.

I ka wā mua o ka pua, hiki iā ʻoe ke pīpī iā Chlorothalonil75% WP 1000-1200 mau manawa wai + Metalaxyl25% WP 500-600 mau manawa wai, a i ʻole Metalaxyl 58% · Mancozeb WP 500 mau manawa wai, hoʻomalu i 2 a 3 mau manawa hoʻomau, me ka wā o ka 7 a 10 mau lā ma waena o kēlā me kēia manawa, he hopena mana maikaʻi i ka ʻōpala keʻokeʻo.