棉病害之研究(第一報)棉幼苗病害及種子處理

蔡雲鵬; 游江海; Y.P. Tsai; C.H. You

棉病害之研究(第一報)棉幼苗病害及種子處理

Other Title

Study on The Diseases of Cotton (I) Seedling Diseases and Seed Treatment of Cotton

Journal

農業研究

Journal Volume

11

Journal Issue

2

Start Page

46

End Page

53

Date Issued

1962-06-06

Date

1962-06-06

Author(s)

蔡雲鵬

游江海

Y.P. Tsai

C.H. You

URI

https://scholars.tari.gov.tw/handle/123456789/13775

Abstract

1. 本研究係於 1957~1959 年間，就棉種內病菌，棉幼苗病害發生情形，棉種谷樂生處理，腰折病防治等各項目進行者。 2. 在臺南本分所農場採收之棉種內，有菌者佔發芽株數之4~10%。菌之種類計有 Colletotr-ichum sp. Diplodia sp., Bacteria及 Fungi ( Unknown sp.）等，幼苗病害種類以腰折病最多，炭疽病及未知種次之。 3. 棉種以谷樂生 1,000 倍液浸漬處理者，比未處理者之發芽率高 9.63~44%，且減少腰折病發生率 16~23%。棉種浸漬谷樂生 1,000 倍液後，用水洗淨與否，對發芽率無何差異。以棉種重量之 1 及 0.5%之谷樂生粉混拌棉種內，貯藏於室內 5 個月，對其發芽並無影響，且可減少幼苗發病數。 4. 以谷樂生Granosan M . Uspulun. Fernasan. Arasan SF-X 及 Orthocid 比較棉種處理對腰折病之防治效果。結果以谷樂生處理之病株率最少，Orthocide, Fernasan 及 Arasan SF-X 次之。 This paper gives the results of the experiments on the microorganisms causing seed rot or seedling disease of cotton and on seed treatment. The works were carried out in Tainan Fibre Crops Experiment Station, in 1957-4959. Rhizoctonia solani and Colletotrichum gossypii were isolated from the diseased cotton seedlings. Some unknown species of Colletotrichum, Diplodia, Rhizoctonia, bacteria and other fungi were also isolated from the acid delinted cotton seeds har-vested from the farm of this station in 1958. The germinability of fuzzy seeds treated with a 0.1% aqueous Granosan solution (44.0%) was higher than that of the untreated one (9.63%). The rate of treated seed subjected to attack by the damping-off fungi was 16%, while that of the untreated one was 23%. Washing of the seeds with running water after Granosan treatment did not effect remarkably the emergence of seedlings when comparison was made to that of the corresponding untreated let. Dusting of the seed with 1.0 and 0.5% (by weight) respectively, of Granosan exhibeted no difference on emergence of the seedling when comparisom was made to that of the untreated check, but effectively reduced an outbreak of damping-off. Treatment of fuzzy seeds with Granosan, Granosan M. Fernsan, Uspulun, Arasan SF-X and Orthocide-75 was made for the purpose of controlling damping-off of cotton seedlings caused by Rhizoctonia solani. Among the fungicides so far tested, Granosan showed relatively good control effect and was followed by Orthocide, Fernasan and Arason SF-X in a descending order named above.

Publisher

農業試驗所

Type

journal article

File(s)

Name

journal_arc_11-2-6.pdf

Size

1.04 MB

Format

Adobe PDF

Checksum

(MD5):a37aae813973dba7a312879bf4f6a93f