Época de semeação da guaxima
J. C. Medina
Engenheiro agrônomo, Secção de Plantas Fibrosas Diversas, Instituto Agronômico de Campinas
SUMMARY
In order to determine the effect of planting time on growth and yield of caesar weed (Urena lobata L.), experimental trials in randomized blocks were conducted in 11 localities of the State of São Paulo, during the crop years 1947/48, 1948/49 and 1949/50.
Plantings were made at 15 day intervals, beginning October 15, and ending November 30, in rows 20 cm appart and seeded at the rate of 50 kilograms of seed per hectare in the 1947/48 plantings, and in rows 30 cm appart and seeded at the rate of 33 kilograms of seed per hectare in the 1948/49 and 1949/50 plantings.
Harvest operations were carried out at the time when the plants were in full bloom state and green weight of foliated stems were determined.
The following conclusions can be drawn :
1 - Higher yields of green foliated stems were obtained from plantings made on October 15 and October 30.
2 - Average height of the plants decreased from the first (Oct. 15) to the last (Nov. 30) plantings.
3 - There was a difference of about 8 days in the time of opening of the first flower between the plants of the first and last plantings.
The results obtained in this investigation showed that caesar weed is a fibrous bast plant well adapted to cultivation on various soil types and localities of the State of São Paulo.
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Datas de Publicação
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Publicação nesta coleção
07 Jun 2010 -
Data do Fascículo
Ago 1950
