Reference

The effect of 1,8-naphthalic anhydride and depth of seeding on rice tolerance to herbicides in greenhouse tests

The effect of 1,8-naphthalic anhydride and depth of seeding on rice tolerance to herbicides in greenhouse tests. Mabbayad, Maxima O.; Moody, K.; Ruscoe, A. W. (Int. Rice Res Inst., Los Banos, Philippines). Crop Prot., 4(2), 195-200 (English) 1985. CODEN: CRPTD6. ISSN: 0261-2194. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) In greenhouse tests both butachlor [23184-66-9] and thiobencarb [28249-77-6] injured the rice (Oryza sativa) cultivars IR36 and Salumpikit. Depth of seeding altered the tolerance of both cultivars to the herbicides. Planting IR36 3 cm deep and Salumpikit 4 cm deep protected them from herbicide damage. Planting deeper than 4 cm generally resulted in smaller and lighter plants. Seed treatment with 1,8-naphthalic anhydride (NA) [81-84-5] at 1% wt./wt. further reduced the phytotoxic effect of the herbicides, esp. at shallower planting depths. The plants from the NA-treated seeds were taller and heavier than those from the untreated seeds.

Pesticides and trialkyl phosphates in tap water

Pesticides and trialkyl phosphates in tap water. Adachi, Kazuhiko; Mitsuhashi, Takao; Ohkuni, Nobuyuki (Div. Food Drug Chem., Public Health Inst. Hyogo Prefect., Kobe 652, Japan). Hyogo-ken Eisei Kenkyusho Kenkyu Hokoku, 19, 1-6 (Japanese) 1984. CODEN: HEKHDB. ISSN: 0385-9312. DOCUMENT TYPE: Journal CA Section: 61 (Water) Section cross-reference(s): 5 With the use of mass spectrometry and mass fragmentog., a-BHC [319-84-6], b-BHC [319-85-7], g-BHC [58-89-9], butachlor [23184-66-9], and oxadiazon [19666-30-9] were detd. in tap water over a period of a year at concns. of 2.3-11.4, 4.3-17.2, 0.8-4.0, 0-23.2, and 2.0-94.4 parts per trillion, resp. The levels of IBP [26087-47-8], diazinon [333-41-5], tributyl phosphate [126-73-8], tris(2-chloroethyl) phosphate [115-96-8], tris(1,3-dichloropropyl) phosphate [40120-74-9], and tris(butoxyethyl) phosphate [78-51-3] were detd. to be 0-10.7, 0.9-4.7, 1.4-115.1, 2.0-60.5, 19.0-261.9, and 0-58.5 parts per trillion, resp., by gas chromatog. The behavior of the substances and the necessity for continuous monitoring were discussed.