ʻAʻohe mea ʻona haʻahaʻa, ʻaʻohe koena mea hoʻoponopono ulu ʻōmaʻomaʻo - prohexadione calcium

ʻO Prohexadione kahi ʻano hou o ka mea hoʻoponopono ulu o ka cyclohexane carboxylic acid.Ua hoʻomohala pū ʻia e Japan Combination Chemical Industry Co., Ltd. a me ka BASF o Kelemania.Kāohi ia i ka biosynthesis o gibberellin i loko o nā mea kanu a hana i nā mea kanu Ua hoʻemi ʻia ka ʻike o ka gibberellin, no laila e hoʻopaneʻe a mālama i ka ulu wāwae o nā mea kanu.Hoʻohana nui ʻia i nā mea kanu cereal, e like me ka palaoa, ka bale, ke kūpaʻa ʻana o ka laiki, hiki ke hoʻohana ʻia i nā pīni, nā pua a me nā lau nahele e kāohi i ko lākou ulu.

1 Hoʻolauna Huahana

Ka inoa maʻamau Kina: procyclonic acid calcium

inoa maʻamau English: Prohexadone-calcium

Inoa hui: calcium 3-oxo-5-oxo-4-propionylcyclohex-3-enecarboxylate

Helu hoʻokomo CAS: 127277-53-6

Huina mole: C10H10CaO5

Ka nui mole kalahala pili: 250.3

Kumu hoʻolālā:

Nā waiwai kino a me nā kemika: Ke ʻano: ka pauka keʻokeʻo;helu hehee >360 ℃;kaomi mahu: 1.74×10-5 Pa (20 ℃);octanol/wai hoʻokaʻawale ʻāpana: Kow lgP=-2.90 (20 ℃);mānoanoa: 1.435 g/mL;Kona mau o Henry: 1.92 × 10-5 Pa m3mol-1 (calc.).Solubility (20 ℃): 174 mg/L i loko o ka wai hoʻoheheʻe;methanol 1.11 mg/L, acetone 0.038 mg/L, n-hexane <0.003 mg/L, toluene 0.004 mg/L, ethyl acetate <0.010 mg/L, iso Propanol 0.105 mg/L, dichloromethane 0.004 mg/L.Paʻa: paʻa ka mahana a hiki i 180 ℃;hydrolysis DT50<5 d (pH=4, 20 ℃), 21 d (pH7, 20 ℃), 89 d (pH9, 25 ℃);i loko o ka wai maoli, he 6.3 d ka photolysis wai DT50, he 2.7 d ka photolysis DT50 i ka wai i ho'oma'ema'e 'ia (29~34℃, 0.25W/m2).

ʻO ka ʻawaʻawa: ʻO ka lāʻau lapaʻau mua o ka prohexadione he pesticide haʻahaʻa haʻahaʻa.ʻO ka LD50 waha waha (kane/female) o nā ʻiole he >5,000 mg/kg, ʻo ka LD50 percutaneous percutaneous (kāne/female) o nā ʻiole he >2,000 mg/kg, a ʻo ka LD50 waha o ka ʻiole (kane/female) he > 2,000 mg/kg.ʻona ʻona LC50 (4 h, kāne/wahine)> 4.21 mg/L.I ka manawa like, he haʻahaʻa kona ʻona i nā mea ola kaiapuni e like me nā manu, nā iʻa, nā ʻauʻau wai, nā limu, nā pi, a me nā ilo honua.

Mechanism o ka hana: Ma ka hoʻopili ʻana i ka synthesis o ka gibberellic acid i nā mea kanu, hoʻemi ia i ka ʻike o ka gibberellic acid i nā mea kanu, kaohi i ka ulu wāwae, hoʻoulu i ka pua a me ka hua, hoʻonui i ka hua, hoʻomohala i nā ʻōnaehana kumu, pale i nā membrane cell a me nā membrane organelles, a hoʻomaikaʻi. kūʻē i ke koʻikoʻi o nā mea kanu.I mea e pale ai i ka ulu ʻana o ka ʻaoʻao o luna o ka mea kanu a hoʻoikaika i ka ulu hānau.

2 Kakau inoa

Wahi a ka nīnau a China Pesticide Information Network, ma Ianuali 2022, ua hoʻopaʻa inoa ʻia he 11 mau huahana calcium prohexadione i koʻu ʻāina, me 3 mau lāʻau lapaʻau a me 8 hoʻomākaukau, e like me ka hōʻike ʻana ma ka Papa 1.

Papa 1 Kakau inoa o ka calcium prohexadione ma ko'u aina

3 Manao kuai

Ma keʻano he mea hoʻoponopono ulu ulu'ōmaʻomaʻo, ua like ka prohexadione calcium me nā mea hoʻoponopono ulu ulu o paclobutrazol, niconazole a me trinexapac-ethyl.Kāohi ia i ka biosynthesis o ka waikawa gibberellic i loko o nā mea kanu, a pāʻani i kahi hana i nā mea kanu dwarfing, ʻO ke kuleana o ka mālama ʻana i ka ulu ʻana o nā mea kanu.Eia nō naʻe, ʻaʻohe koena o ka prohexadione-calcium ma nā mea kanu, ʻaʻohe haumia i ke kaiapuni, a emi iki ka hopena i nā mea kanu a me nā mea kanu ʻole.Hiki ke ʻōlelo ʻia he ākea loa ka manaʻolana noi.