Weeds cleavers Galium aparine

Trials were made on seedlings of oil seed rape (Brassica napus), chick weed (Stellaria media), cleavers (Galium aparine), mayweed (Tripleurospermum maritimum) and spurry (Spergula arvensis), sprayed with chlorsulfuron at rates of... 

Pyraflufen-ethyl [15] is CHF20-containing phenylpyrazole (Fig. 10). This compound is a post-emergence contact herbicide for the control of broadleaf weeds, including cleavers (Galium aparine), in cereals and cotton, which also shows excellent crop selectivity for wheat and barley. It is rapidly absorbed by the foliage of broadleaf weeds, resulting in necrosis and desiccation. 

Clacyfos EC was tested in wheat field at 990-3,750 mL/ha (300-1,125 g ai/ha) when weeds were at 2-8 leaves stage. 13 % MCPA (aqua) 3,750 mL/ha and 10 % tribenuron methyl WP 150 mL/ha, at the recommended rates, were used as the positive controls. A preponderance of weeds in this wheat field were flixweed tansymustard Descurainia Sophia), shepherd s purse Capsella bursa-pastoris), and chickweed Stellaria media). There were also little wild oats (Avena fatua), cleavers Galium aparine) and others. As shown in Table 8.13, after 50 days, clacyfos exhibited 91 % total control at 450 g ai/ha against weeds in this wheat field. The yield of wheat could rise to 6,495 kg/ha which is increased 19 % comparing to the negative imtreated (5,430 kg/ha). However, the yield of wheat... 

The range of action of a-phenoxypropionic acids differs from that of phenoxyacetic acids, as was established by Luckwill and Lloyd-Jones (1960). They assumed that decarboxylation causing the detoxication of the molecule is inhibited in certain plant species because of the a-methyl substitution, and that this kills the weeds resistant to phenoxyacetic acids (Fawcett et al., 1953 Lush and Leafe, 1956). Leafe (1962) found that Galium aparine (cleavers), resistant to MCPA, is killed by... 

Benazolin is a selective postemergence herbicide translocated in the phloem. Combined with phenoxy herbicides, such as MCPA and MCPB, 2,4-DB and 2,4-DP, it efficiently controls many broad-leaved weeds, particularly Stellaria media and Galium aparine, in undersown cereals and direct sown leys. Alone it is used against wild mustard, chickweed cleavers and oil seed rape at a rate of 0.9-2.S kg active ingredient/ha (Shafer and Stobbe, 1973a, Rea et al. 1976). Used in the form of its water-soluble sodium or potassium salt it is not adsorbed in the soil and is rapidly leached. 

---