Ave no controle da Tiririca em Inglês (2)

– Second evaluation on June 3rd, 21 days after the first application, being determined by
treatment and in all repetitions, the percentage of dead plants and survivors;
– Third evaluation on July 29 th , 77 days after the first application, with the same objectives
of the second, and including the emerged plants as well (new plants);
– Second application on July 30 th ;
– Fourth evaluation on September 2nd, 34 days after the second application, with similar
objectives from the third.
3. Results and Discussion:
1 – The percentage of dead sedge plants, 21 days after the first application, vary from 31%
(50ml) to 89% (150ml) respectively.
2 – The medium percentage of survivor plants at the same period vary from 69% (50 ml) to
11% (150 ml), being the main cause of the plants surviving, the non direct contact with the
applied products, since they were below other bigger weeds.
3 – The medium percentage of dead sedge plants, after 34 days from the second application,
vary from 93% (50 ml) to 99% (150 ml).
4 – The medium percentage of the survivor plants in the same period, has also vary from 7%
(50 ml) to 0,98% (150 ml), so that in this second application, the treatment 4 (125 ml
Roundup + 60 ml AVE) have presented 100 % of dead plants.
Ministério da Agricultura
e do Abastecimento
Empresa Brasileira de Pesquisa
Agropecuária EMBRAPA
Centro de Pesquisa Agropecuária
do
Trópico Semi-Árido
BR 428, Km 152
Zona Rural, C.P 23
CEP 56300-000
Petrolina – PE
Fone: (081) 862-1711
Fax: (081) 862-1744
cpatsa@cpatsa.embrapa.br
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