I arotakehia e mātou ngā maimoatanga harore hei whakahaere i ngā mate i te William H. Daniel Turfgrass Research and Diagnostic Center i te Whare Wānanga o Purdue i West Lafayette, Indiana. I whakahaerehia e mātou ngā whakamātautau matomato ki ngā kākano bentgrass ngokingoki 'Crenshaw' me 'Pennlinks'.
Pikitia 1: Te maimoatanga patu harore i Crenshaw bentgrass. I tukuna ngā tono whakamutunga i te 30 o Ākuhata mō Maxtima me Traction, me te 23 o Ākuhata mō Xzemplar. E tohu ana ngā pere i ngā wā tono o te 14 rā (Xzemlar) me te 21 rā (Maxtima me Traction) mō ia patu harore.
Mai i te 1 o Paenga-whāwhā ki te 29 o Hepetema, 2023, ka tapahia e mātou ngā rau matomato e rua e rima ngā wā i te wiki, he 0.135 inihi te whānui. I whakamahia e mātou he kai whakamakuku Excalibur (Aqua-Aid Solutions) 4 fl. mō ngā rau matomato e rua i te 9 o Hune me te 28. Ko te utu i te 20 o Hūrae he 2.7 fl. oz. oz./1000 sq. ft. hei whakaiti i ngā wāhi maroke o te rohe.
I te 16 o Ākuhata, i pania e mātou te wai whakamakuku Fleet (2.7 fl oz/1000 sq ft) ki ngā kākano matomato hei whakawhāiti i ngā wāhi maroke o te rohe.
I whakamahia e mātou e 9 ngā wai Tempo SC (cyfluthrin, Envu). auneke/eka me Meridian (Thiamethoxam, Syngenta) 12 fl oz. Hune 9 auneke/eka hei whakahaere i ngā pōpokorua. I whakamahia e mātou te 0.5 pauna o te tongi hauota i te 10 o Hune me te 2 o Hepetema mā te whakamahi i te Country Club MD (18-3-18, Lebanon Lawn). N/1000 putu tapawha
E 5 x 5 putu te rahi o ā mātou kauwhata whakamātautau, ā, i hangaia mā te whakamahi i tētahi hoahoa poraka matapōkere katoa me ngā tukuruatanga e whā. Whakamahia he pūwero CO2 i te 50 psi me ētahi pūwero papatahi TeeJet 8008 e toru e rite ana ki te 2 karani/1000 putu tapawha o te wai.
I roto i ngā rangahau e rua (Whakamātautau 1 me te Whakamātautau 2), i tīmata mātou i ngā maimoatanga katoa i te 17 o Mei, ā, he rerekē te wā o te tukunga whakamutunga i waenga i ngā maimoatanga (Ripanga 1). I te 1 o Hūrae, i whakamahia e mātou he mīhini hora ā-ringa hei tohatoha ōrite i ngā witi rai kua pangia e te matā i te tere o te 12.5 cc mō ia moenga. Kātahi ka waiho e mātou ngā witi rai ki runga i te mata o te tarutaru mō ngā rā e whā i mua i te tapahi.
I aromatawaihia e mātou te kaha o ngā ira tāra i runga i te maha o ngā pokapū pangia i tētahi wāhi. I tatauhia te horahanga i raro i te pihi haere whakamua o te mate (AUDPC) mā te whakamahi i te tikanga trapezoidal mā te whakamahi i te tātai Σ [(yi + yi+1)/2] [ti+1 − ti], ko i = 1,2,3, … n -1, ko yi – te whakatauranga, ti – te wā o te whakatauranga-i. I tukuna ngā raraunga ki te tātaritanga o te rerekētanga me te wehenga toharite (P=0.05) mā te whakamahi i te whakamātautau LSD tiakina a Fisher.
I te 31 o Mei i kite tuatahi mātou i ngā rerekētanga o te whakahaere ira tāra i waenga i ngā wāhi maimoatanga. I te 13 o Hune, he nui ake te kaha o te ira tāra i roto i ngā maimoatanga kaupapa i ērā atu maimoatanga (Pikitia 1). I tētahi atu taha, he iti iho te kaha o te ira tāra o te kaupapa $20 o Hūrae 20 i ērā atu maimoatanga.
I te 2 o Ākuhata, i rongoatia ngā rohe ki te 1.3 fl o te Traction (fluazimide, tebuconazole, Nupharm). oz/1000 putu tapawha – Ko te utu tūnga 21-rā i roto i te tāra US he nui ake i ngā wāhi whenua i rongoatia ki te Maxtima (fluconazole, BASF) 0.4 oz. oz/1000 putu tapawha i roto i taua wā anō. I te 16 me te 28 o Hepetema, e rua me te whā wiki i muri i te tono whakamutunga, ia, he nui ake ngā tāra tūnga o ngā wāhi whenua i rongoatia ki te Traction i te Maxtima, ā, he iti iho ngā uara AUDPC i te mana whakahaere.
I kite tuatahi mātou i te uara tāra i te 7 o Hūrae. I te 7 o Hūrae, he iti iho i te kotahi te pakarutanga o ia wāhi i ngā wāhi katoa i rongoatia. Kāore he rerekētanga maimoatanga puta noa i te whakamātautau. He iti iho ngā uara AUDPC i ngā wāhi katoa i rongoatia i ērā i ngā wāhi whakahaere kāore i rongoatia (Ripanga 1).
I arotakehia e te Daniel Turfgrass Research and Diagnostic Center o Te Whare Wānanga o Purdue te whai huatanga o ngā maimoatanga harore ki ngā bentgrass ngokingoki pakari, tū motuhake.
Mai i te 1 o Paenga-whāwhā ki te 1 o Oketopa, tapahia te tarutaru kia toru ngā wā i te wiki kia tae ki te 0.5 inihi te teitei. I whakaurua e mātou te Ference (cyantraniliprole, Syngenta) i te 30 o Hune i te 0.37 fl. oz/1000 sq. ft. hei whakahaere i ngā torongū mā. I te 20 o Hūrae, i whakamahia e mātou te rongoā whakamakuku Excalibur i te horopeta o te 2.7 fl. oz/1000 sq. ft. hei whakaiti i ngā wāhi maroke o te rohe.
I whakamahia e mātou te hinu whakamakuku Fleet (Harrell's) i te 16 o Ākuhata i roto i te ipu 3 fl. oz/1000 sq. ft. hei whakaiti i ngā wāhi maroke o te rohe. Kātahi ka whakamahia e mātou te 0.75 lbs o te hauota i te 24 o Mei mā te whakamahi i a Shaw (24-0-22). N/1000 sq. ft. Hepetema 13, 1.0 lbs. N/1000 sq. ft.
He 5 x 5 putu te rahi o ngā kauwhata, ā, kua whakaritea kia rite ki ngā poraka matapōkere katoa me ngā tāruarua e whā. Whakamahia he pūwero CO2 i te 45 psi me ētahi pūwero papatahi TeeJet 8008 e toru e rite ana ki te 1 karani/1000 putu tapawha o te wai.
I te 19 o Mei i whakamahia e mātou te harore tuatahi, ā, i te 18 o Ākuhata i whakamahia te harore whakamutunga. I te 27 o Hune me te 1 o Hūrae, i whakamahia he mīhini horapa ā-ringa mō te witi rai i pangia e te mate ira tāra, i te tere o te 11 cm3 me te 12 cm3 mō ia wāhi. Kātahi ka waiho e mātou te witi rai ki runga i te mata o te tarutaru mō ngā rā e whā i mua i te tapahi.
I arotakehia te kaha o te mate i ia rua wiki puta noa i te rangahau. I arotakehia te kaha o te mate mā te arotake ā-kanohi i te ōrau o te rohe e pāngia ana i ia wāhi. I tatauhia te rohe i raro i te pihi pēhanga mate (AUDPC) mā te whakamahi i te tikanga trapezoidal kua whakaahuatia i runga ake nei. I tukuna ngā raraunga ki te tātaritanga o te rerekētanga me te wehenga toharite (P=0.05) mā te whakamahi i te whakamātautau LSD tiakina a Fisher.
I te 1 o Hune i kitea tuatahitia ai e mātou ngā ira tāra (<0.3% te kaha, 0.2 ngā whara i pangia mō ia wāhi), ā, i piki ake ō rātou tau i muri i te werohanga. I te 20 o Hūrae, i rongoatia ngā wāhi ki te Encartis (boscalid me te chlorothalonil, BASF) 3 fl. oz/1000 sq. ft – 14 ngā rā me te 4 fl. oz/1000 sq. ft. – 28 ngā rā, Daconil Ultrex (chlorothalonil, Syngenta) 2.8 fl oz/1000 sq. ft. – 14 ngā rā, he iti ake ngā ira tāra o ngā wāhi i rongoatia kua whakaritea i ērā atu wāhi katoa i rongoatia me ngā mana whakahaere kāore i rongoatia.
Mai i te 20 o Hūrae ki te 15 o Hepetema, he iti ake ngā whakaekenga o ngā wāhi katoa i rongoatia i ngā wāhi whakahaere kāore i rongoatia. Ko ngā wāhi i rongoatia ki te Encartis (3 fl oz/1000 sq ft – 14 rā), Encartis (3.5 fl oz/1000 sq ft – 21 rā) i te 2 o Hepetema, e rua wiki i muri i te tono whakamutunga (WFFA) d), Xzemplar (fluxapyroxad, BASF) 0.21 fl. ounce/1000 sq. ft. – 21 rā, Xzemlar (0.26 oz/1000 sq. ft. – 21 rā) me ngā wāhi i rongoatia ki te kaupapa i iti rawa te kaha o te mate.
I te 3 o Ākuhata me te 16 o Ākuhata, kāore i nui te pānga o ngā reiti me ngā rā kati tono a Encartis ki ngā mana whakahaere moni tāra US. Heoi, i te 2 me te 15 o Hepetema (WFFA 2 me te 4), he nui ake te tūponotanga kia rongoatia ngā wāhi ki te Encartis (3 fl oz/1000 sq ft – 14 rā) ā, he iti ake te ātete o Encartis (3.5 fl oz/1000 sq ft) . . – 21 rā) ki te paru USD i a Encartis (4 fl oz/1000 sq ft – 28 rā).
He rerekē, kāore i tino pāngia te kaha o ngā tohu tāra e ngā rerekētanga o te tere o te whakahaere me te wā maimoatanga o Xzemplar me Maxtima i te wā rangahau. Ko ngā tere tono teitei ake o Daconil Action (3 fl oz/1000 sq ft) i konatunatua ki Secure Action kāore i hua ake he hekenga o te tohu tāra. I te 2 o Hepetema, he iti ake ngā wāhi i rongoatia e te pokapū whakahaere mate urutā Dollar Point a Xzemplar i a Maxtima.
He iti iho ngā uara AUDPC o ngā wāhi katoa i rongoatia i ērā o ngā wāhi whakahaere kāore i rongoatia. He iti iho tonu te kaha o te ira tāra i roto i ngā kauwhata o tēnei kaupapa puta noa i te rangahau, ā, koinei te uara AUDPC tau iti rawa o ngā maimoatanga katoa.
He nui ake ngā uara AUDPC o ngā wāhi i rongoatia ki te Daconil Ultrex anake i ngā wāhi i rongoatia ki ngā maimoatanga katoa engari ko ērā i rongoatia ki te 0.5 ml Secure (fluridinium, Syngenta). 1000 sq. ft. – 21 ngā rā) 21 ...
Wā tuku: Paenga-whāwhā-16-2024