Te whākawa me te pāhare pākawa taketake: ngā āhua, te taurite me te tūnga
E ai ki te PDA, e 5.8 kg K₂O ia tana te nui o te tongi ka tangohia e ngā kōpura rīwai — engari mā te whakarea i te hua ki taua tatauranga ka puta he auau tongi, ehara i te auau tongi.
Raupapa Kai Rīwai · Wāhanga 03 o te 24 · Ngā wāhanga katoa kia rite te raupapa
He iti noa te nekeneke o te whākawa i roto i te oneone, ā, he iti noa iho te pūnaha pakiaka o te rīwai. Nō reira, he mea nui ake te wātea o te phosphate i te rohe pakiaka taitamariki i te nui o ia heketea. E whakamārama ana te UK Potash Development Association (PDA) he nui ake te tūtohutanga o te phosphate mō ngā rīwai i te tangohanga o ngā hua, engari he tino nui te hiahia mō te pāhare pāporo i te wā e tipu kaha ana, e whakanui ana hoki.
Mā te tirohanga whānui a te PDA o Poutū-te-rangi 2026 ka kitea te toenga: kei roto i ngā kūmara te 5.8 kg K₂O mō ia tana. Nō reira, ko te 40 tana/heketea te tikanga he tata ki te 232 kg K₂O/heketea ka tangohia, ā, ko te 70 tana/heketea he tata ki te 406 kg. He tātaitanga tangohanga tēnei, ehara i te auau tongi: ko tētahi wāhanga o te K i ahu mai i te oneone, ā, ko te K mōrahi ka kohia e te hua ka nui ake i te mea ka tangohia e ngā kūmara. Kāore e taea te whiwhi i te auau mā te whakarea noa i te hua ki tētahi tauwehenga.
Ngā rā o te wiki. Whakakore i te ohaurunga mā te pāwhiri kotahi.
Te tātaitanga me te tauwehenga PDA: 5.8 kg K₂O mō ia tana o ngā kūmara
Ka tangohia te K₂O e ngā kōpura, kg/ha. He tangohanga tēnei, ehara i te auau tongi.
He mea nui anō hoki te pūtake o te pāhare pākawa. I Airana, e whakanui ana a Teagasc, mō ētahi kaupapa tukatuka, ka taea e ngā momo whanariki te pupuri i te mea maroke kia pai ake i te pūhaumāota; engari ka taea hoki e te nui o te pāhare pākawa o tētahi āhua te whakaiti i te mea maroke. Kāore te momo pūhaumāota i te aukatia i roto i te kaupapa: ko te kōwhiringa e whakawhirinaki ana ki te wā, te oneone me ngā whakaritenga kirimana mō ngā kōpura.
Te whenua me te tono mahi
He tikanga tatau ngā taunakitanga a Peretānia me Airana mō te āhuarangi haumākū; me whai tātaritanga anō ngā mara iti-K i Ūropi ki te Rawhiti. I ngā onepū whakamakuku o Idaho, ka aro nui ki te wāhanga kohikohi K me te aroturuki.
Ngā tuhipoka ā-rohe
- Ruhia me Ahia Waenganui (Kazakhstan, Uzbekistan): low-K sandy soils in central Russia and irrigated sierozems in Central Asia need their own K diagnosis; the PDA offtake figure only helps with the balance.
- Amerika Latina (Brazil, ngā whenua o Andean): tropical soils often fix phosphorus, so placement near the row matters more than in temperate soils.
- Āwherika (Kenya, Nigeria, Zimbabwe, Zambia): P is a common constraint on acidic soils; K was long assumed adequate but Kenyan data show depletion on intensively cropped fields.
- Āhia ki te Tonga-Rawhiti (Wītnam, Thailand, Philippines): on leached highland soils, K can be lost with heavy rain; split K where the label and soil allow.
He tikanga whānui tēnei mō ngā aratohu ahuwhenua; me whakaae tahi me tō tohunga ahuwhenua ki ngā utu me ngā wā e tika ana.
Rauemi hoa: Uralchem hua — kōwhiringa ā-tikanga
NPKS 8:20:30:3Mō te tono turanga, mō te tono here rānei, Uralchem's granular NPKS 8:20:30:3 can be considered: according to the catalogue it contains 8% N (ammonium form), 20% P₂O₅, 30% K₂O and 3% S. The rate is calculated from soil analysis and the balance of all nutrient sources; a brand name does not replace a field calculation. In a band at planting, keep the fertilizer away from the seed tuber: a high-K granular grade raises the salt (and chloride) load near the sprout.
Whakaahua hua: Uralchem.
hea Uralchem Ngā taonga: Rūhia me te CIS, Amerika Latina, Āwherika (mā tana kaituku United Fertilizer Company Limited) me Āhia ki te Tonga-Rawhiti, kei reira te kamupene e whakawhanake ana i te tohatoha ki Vietnam, Thailand me Philippines. He rerekē te wātea o ngā momo motuhake i ia whenua — tirohia ki te kaituku ā-rohe.
Ehara i te tūtohutanga utu — whakapā atu ki tō tohunga ahuwhenua.
Rauemi
- Te Rōpū Whakawhanake Potash, Ngā Whakaaro Matūkai mō ngā Rīwai (Maehe 2026).
- Teagasc, Te ahuwhenua rīwai me te kai totika.
- Te Whakawhanui o Te Whare Wānanga o Idaho, Te whakahaere matūkai: Ngā rīwai.
Ngā raraunga hoa (Uralchem)
Raupapa Kai Rīwai · Wāhanga 03 o te 24
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