He iti te paitini, kāore he toenga o te kaiwhakahaere tipu matomato - te konupūmā prohexadione

He momo hou te Prohexadione hei whakahaere tipu tipu o te waikawa cyclohexane carboxylic. I whakawhanakehia ngātahitia e Japan Combination Chemical Industry Co., Ltd. me te BASF o Tiamana. Ka aukati i te hanga o te gibberellin i roto i ngā tipu, ā, ka whakaitihia te nui o te gibberellin i roto i ngā tipu, ka whakaroa, ka whakahaere hoki i te tipu roa o ngā tipu. Ko te nuinga o te wā e whakamahia ana i roto i ngā hua witi, pērā i te witi, te parei, te raihi, ā, ka taea hoki te whakamahi i roto i ngā pīnati, ngā putiputi me ngā tarutaru hei whakahaere i tō rātou tipu.

1 Whakataki Hua

Ingoa Hainamana noa: konupūmā waikawa procyclonic

Ingoa noa Ingarihi: Prohexadione-calcium

Ingoa matū: konupūmā 3-oxo-5-oxo-4-propionylcyclohex-3-enecarboxylate

Tau whakauru CAS: 127277-53-6

Tātai ngota: C10H10CaO5

Papatipu ngota whanaunga: 250.3

Tātai hanganga:

Ngā āhuatanga ā-tinana me te matū: Āhua: paura mā; ira rewa >360℃; pēhanga kohu: 1.74×10-5 Pa (20℃); tauwehenga octanol/wai: Kow lgP=-2.90 (20℃); kiato: 1.435 g/mL; Pūmau a Henry: 1.92 × 10-5 Pa m3mol-1 (tātaitanga). Wairewatanga (20℃): 174 mg/L i roto i te wai whakapūkara; 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. Pūmautanga: pāmahana pumau tae atu ki te 180℃; te waikura DT50<5 d (pH=4, 20℃), 21 d (pH7, 20℃), 89 d (pH9, 25℃); i roto i te wai māori, ko te waikura DT50 he 6.3 d, ko te waikura DT50 i roto i te wai whakapūkara he 2.7 d (29～34℃, 0.25W/m2).

Paitini: Ko te rongoā taketake o te prohexadione he patu pepeke iti te paitini. Ko te LD50 waha nui (tāne/uwha) o ngā kiore he >5,000 mg/kg, ko te LD50 kiri nui (tāne/uwha) o ngā kiore he >2,000 mg/kg, ā, ko te LD50 waha nui o ngā kiore (tāne/uwha) he >2,000 mg/kg. Ko te paitini manawa LC50 (4 h, tāne/uwha) > 4.21 mg/L. I taua wā anō, he iti te paitini ki ngā rauropi taiao pēnei i te manu, te ika, te puruhi wai, te rimurimu, te pī, me te noke whenua.

Tikanga mahi: Mā te whakararuraru i te hanga o te waikawa gibberellic i roto i ngā tipu, ka whakaitihia te nui o te waikawa gibberellic i roto i ngā tipu, ka whakahaere i te tipu o ngā waewae, ka whakatairanga i te pua me te hua, ka whakapiki i te hua, ka whakawhanake i ngā pūnaha pakiaka, ka tiaki i ngā kiriuhi pūtau me ngā kiriuhi okana, ā, ka whakapai ake i te ātete ki te ahotea o te hua. Kia aukati ai i te tipu tipu o te taha o runga o te tipu, kia whakatairanga hoki i te tipu whakaputa uri.

2 Rēhitatanga

E ai ki te uiuinga a te Whatunga Mōhiohio Pesticide o Haina, tae noa ki Hānuere 2022, kua rēhitatia te katoa o ngā hua konupūmā prohexadione e 11 ki tōku whenua, tae atu ki ngā rongoā hangarau e 3 me ngā whakaritenga e 8, e whakaaturia ana i te Ripanga 1.

Ripanga 1 Te rēhitatanga o te konupūmā prohexadione i tōku whenua

3 Ngā tūmanakohanga mākete

Hei kaiwhakahaere tipu matomato, he rite tonu te prohexadione calcium ki ngā kaiwhakahaere tipu tipu o te paclobutrazol, niconazole me te trinexapac-ethyl. Ka aukati i te hanga o te waikawa gibberellic i roto i ngā tipu, ā, ka whai wāhi ki te whakaiti i ngā hua, te whakahaere i te tipu o ngā tipu. Heoi, kāore he toenga o te prohexadione-calcium ki ngā tipu, kāore he parahanga ki te taiao, ā, he iti ake te pānga ki ngā hua o muri mai me ngā tipu kāore i te whainga. Ka taea te kī he whānui rawa te tirohanga tono.