+ Translate

Chemical defoliation of rubber trees by mist-spraying

, : Chemical defoliation of rubber trees by mist-spraying. Pesquisa Agropecuaria Brasileira 17(11): 1621-1626

In trials at 2 localities, thidiazuron at 1 kg/ha was applied in late May at 7 litres/ha to 13-year-old trees of the rubber clone FX 3899 growing in Camamu and to 25-year-old trees of the clone FX 25 in Una to induce defoliation and early refoliation to avoid infection by Microcyclus ulei and Phytophthora spp. Satisfactory defoliation, refoliation and avoidance of infection were obtained in Camamu but not in Una.

(PDF 0-2 workdays service)

Accession: 001053856

Submit PDF Full Text: Here

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Related references

Hall, Kaye I., 1954: Mist-spraying of street trees. In 1953 the City of Palo Alto, California sprayed 3500 trees with hydraulic sprayers, at a cost of 360 man days and total cost of $1200 for materials and equipment or $2.10 per tree. Results of the spraying were rated good. In 1954 the city used m...

Thill ., 1955: Winter spraying of fruit trees by a mist sprayer. Winter sprays were applied to pome fruit trees by a mist sprayer to control San Jose scale. The materials used were Gebutox at 7.5 %, yellow oil at 30 %, and carbo-lineum oil at 50%. Spraying was done during very still weather. In the following au...

Thiem, H., 1955: The treatment of fruit trees in Germany by low-volume and mist spraying. Observations are recorded on the co-operative spraying of fruit trees on agricultural holdings by low-volume applications and of both modern orchards and single trees by mist applications, especially for cherry fruit fly and codling moth control.

Nordby, A., 1959: The distribution of plant protection chemicals in mist spraying apple trees four metres high. A 2% nigrosine dye was sprayed at 14.25 gal./acre onto compact trees of the variety Filippa, 4 m. high, 5 m. in width. A comparison was made between 3 machines, namely the R.S.M. (Sigvardt) one-sided, the R.S.M. two-sided and the Tomal Atom, at tw...

Warman, T.M.; Hunter, L.D., 1981: Deposits of the mildew fungicide binapacryl on the leaves of apple trees of differing sizes after mist blower spraying. Trials in 1975 and 1976 showed that deposit levels of binapacryl on the leaves of bush apple trees of Cox's Orange Pippin (Cox), after mist blower spraying, varied inversely with tree spread. Deposit levels were measured on young mildew-susce...

Kersten E.; Fachinello J.C., 1984: Effect of iba in the percentage of herbaceous rooted cutting of fig trees purple cultivar of valinhos under conditions of mist spraying. An experiment related to the rooting of fig cuttings was conducted at the Universidade Federal de Pelotas, Rio Grande do Sul, Brazil, in 1981. The development of roots was compared in cuttings, either with and without apical meristem maintained in...

Vang Petersen, O., 1982: Spraying of apple trees with air mist blower and ultra low volume sprayer with normal and reduced amounts of pesticides. Spraying investigations during 1975-79 are reported. The effects of concentration and amount of liquid were investigated, and an empirical standard of deposits and distribution was established. Deposits were found to be directly proportional to th...

Romano, R.; Rao, S., 1983: Chemical defoliation of rubber in Bahia. Defoliation is used to control leaf blight (Microcyclus ulei). Merphos [tributyl phosphorotrithioite] at 2.1 kg/ha was applied by aerial spraying, MSMA at 3 kg/ha by aerial and ground spraying, and thidiazuron at 0.3 to 0.75 kg/ha by aerial sprayi...

Hansen, P., 1972: Some effects of ringing, defoliation, sorbitol-spraying and bending of shoots on the rate of translocation, on accumulation and on growth in apple trees. Ringing enhanced the accumulation of 14C and sugars in the leaves and in the upper part of the tree, but reduced the sugar concentration in the lower part of the trunk. The concentration of sugar in the top of the tree was diminished after defolia...

Hansen, P., 1972: Some effects of ringing, defoliation, sorbitol-spraying, and bending of shoots on rate of translocation, on accumulation, and on growth in apple trees