Wahi a HZPC ma kahi ʻatikala hou loa ʻoi aku ka ʻike o ka poʻe mahiʻai o ka ʻoihana ma mua o kekahi: he mea koʻikoʻi ka lepo maikaʻi no ka ulu ʻana i ka ʻuala maikaʻi. Akā ʻoi aku ka maikaʻi o ka lepo maikaʻi. Hāʻawi ia i nā pou nui a pau o HZPC ma ke kahua o ka hoʻomau.
ʻO ka kamaʻilio HZPC me Pieter Klaas Westerhuis mai Usquert ma Groningen, Netherlands e hōʻoiaʻiʻo ana i kēia: "ʻAʻole mākou makemake e waiho i nā pilikia ma hope e hoʻoponopono ai ka hanauna e hiki mai ana".
ʻO ka ʻoihana ʻohana ʻo Pieter Klaas Westerhuis i noho ma mua o 200 mau makahiki. He 6th hanauna ʻo ia ma ka mahiʻai a ua ulu ʻo ia i nā hua ʻuala mai ka makahiki 1993 ma kekahi o nā wahi Wadden nui loa ma Netherlands. Ua hoʻomau hou ʻia ka ʻike a me ka makemake no ka mahiʻai ʻana a mākaukau ka hanauna e hiki mai ana. Ua komo kāna keiki ʻo Pieter i ka ʻoihana ʻohana i ka makahiki i hala. Ua manaʻoʻiʻo lāua ʻelua i ke koʻikoʻi o ka lepo maikaʻi. A makemake ʻo Pieter Klaas e kaʻana like i kona ʻike, ʻike a me ka ʻike o ka ulu ʻana o ka ʻuala a me ka hoʻomau.
I ka makahiki 1996, ua hoʻoholo ʻo Pieter Klaas e lawe i kahi papa ma ka lepo a me ka mea hoʻomomona. Ua loaʻa iā ia nā ʻike e pono mau i kēia lā. Pieter Klaas: “ʻO kekahi o nā mea mua aʻu i aʻo ai ʻo ka hoʻohana ʻana i nā mea kanu i aʻa hohonu, e like me ka palaoa. Mālama kēia i ka hoʻopaʻa ʻana o ka lepo. ʻO ka hoʻoholo e ulu i ka palaoa ma hope o ka hōʻiliʻili ʻana he ʻāpana ia o ka hoʻolālā hoʻololi hua. Hoʻohana ʻia kēia ʻano hoʻolālā e nā mea kanu e mālama i ka maikaʻi o ka lepo. Ma waho aʻe o ka hoʻohana ʻana i nā mea kanu aʻa hohonu, ʻo ka fertilization kekahi mea nui loa. Hoʻohana nui ʻia ʻo Pieter Klaas i ka mea kanu holoholona, ʻoi aku ka maikaʻi o ka lepo ma mua o ka mea hoʻomomona.
ʻO Pieter Klaas: "ʻO kekahi o nā mea maikaʻi o ka mea kanu holoholona ʻaʻole ia wale nō ka nitrogen, akā he nui nā minerale ʻē aʻe. Me ka mea hoʻomomona holoholona kūpono, hana ʻoe i ke ola lepo maikaʻi i piha i nā ilo, ʻeleʻele a me nā hua bacteria maikaʻi. Hoʻohana mākou i nā ʻano mea kanu holoholona. me ka mea hoʻomomona moa, ka mea hoʻomomona lio waiwai a me ka slurry (ka ʻāpana pulu o ka mea hoʻomomona bipi). Hoʻokomo mākou i kēia slurry i ka lepo i ka wā e ulu ana ka palaoa, i ka wā i hiki ai ka hua i ke kiʻekiʻe o 10 cm. Ma ke komo ʻana i loko o kahi mea kanu ulu, hana ʻoe i nā mea liʻiliʻi loa a hiki i nā mea kanu palaoa ke hoʻokō i kēia ʻano fertilization. Ma lalo o nā kūlana kūpono, nalowale ka hopena ma hope o kekahi mau lā.
Me kahi kākā'ōlelo mai Delphy, ua noiʻi ʻo Pieter Klaas i ka maikaʻi o ka lepo. Nānā lākou i ka hiki ʻana mai o nā mea olaola, ka paʻakai a me ka pae pH, ma waena o nā mea ʻē aʻe. Ma muli o kēia noiʻi, hana lākou i kahi hoʻolālā fertilization. ʻAe kēia iā lākou e hōʻoia i ka hiki i ka lepo ke hāʻawi i nā meaʻai kūpono.
Pieter Klaas: “He lepo ka lepo maanei; ua piha i ka lepo. Ua hāʻawi mai nā makahiki he nui o ka ʻike iā mākou i ka ʻike hohonu o ko mākou ʻāina. ʻO ia hoʻi ka ʻike ʻana i nā ʻano ʻuala i kūpono no ka lepo.
Me Garco van der Berg, limahana kahua ma HZPC, kūkākūkā ʻo Pieter Klaas i nā ʻano ʻano e ulu ai.
Pieter Klaas: "He mea nui e hana pū mākou i kēia. Loaʻa iā Garco ka ʻike mai ka pūnaewele ma HZPC a ʻike maopopo i ka mea e koi ai ka mākeke. Ma waho aʻe o Vivaldi a me Innovator, ua ulu lākou i nā ʻano ʻano Memphis a me La Vie i nā makahiki i hala. "ʻO ka hui pū ʻana o kēia mau ʻano me ka lepo maikaʻi kahi a mākou e ulu ai iā lākou, e hōʻoia i kahi pae kūʻē maikaʻi; ʻAʻole maʻalahi ka ʻuala i nā maʻi maʻi, bacteria a me Phytophthora. Eia kekahi, kiʻekiʻe ka hua.