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http://repositorio.ufla.br/jspui/handle/1/13494| Title: | Manejo de Guandu [Cajanus cajan (L.) Millsp.] sob dois tipos de poda em lavoura cafeeira |
| Other Titles: | Guandu [Cajanus cajan (L.) Millsp.] management with two types of pruning in coffee (Coffea arabica L.) fields |
| Authors: | Araújo, João Batista Silva Balbino, José Mauro de Souza |
| Keywords: | Cafeicultura Guandu Coffea arabica Café orgânico Cajanus cajan Adubação verde Organic coffee Green manure |
| Issue Date: | 1-Aug-2017 |
| Citation: | ARAÚJO, J. B. S.; BALBINO, J. M. de S. SILVEIRA, H. R. de O. et al. Impactos do déficit hídrico nas respostas ecofisiológicas e espectrais do cafeeiro consorciado com espécies madeireiras. Coffee Science, Lavras, v. 11, n. 3, p. 318-328, jul./set. 2016. |
| Description: | Neste estudo objetivou-se determinar a época de máxima produção de fitomassa pelo guandu [Cajanus cajan (L.) Millsp.] e o efeito de podas regulares visando a antecipar o manejo do adubo verde para reduzir a competição com o cafeeiro. O experimento foi instalado no município de Venda Nova do Imigrante, ES, em uma lavoura de café, var. Catuai-81, plantada em abril de 1998. As parcelas foram de cinco metros de comprimento com dez plantas de guandu por metro linear, semeadas em 5/10/2000 nas entrelinhas do cafezal. Adotou-se o delineamento experimental em blocos casualizados, em esquema fatorial 2x4 com dois tipos de poda em quatro épocas diferentes e seis repetições. As podas foram em decote (corte a 1,0 m de altura) e em esqueletamento (corte dos galhos sem o caule principal). As podas do guandu foram iniciadas aos 120, 150, 180 e 210 dias (fevereiro março, abril e maio), com podas subseqüentes após 60 dias. O maior acúmulo do guandu foi de 17,77 t ha-1 de massa verde em 28/02/2001, de 6,20 t ha-1 de massa seca em 7/03/2001 e 196,88 kg ha-1 de N em 6/03/2001. O maior teor de N do guandu ocorreu em 20/3/2001, com 37,6 g kg-1. A época mais adequada para o corte do adubo verde situou-se entre os dias 28 de fevereiro e 20 de março. Após esse período, o guandu não aumentou a fitomassa. As podas do guandu em intervalos de 60 dias, iniciadas aos 150 dias após o plantio, permitiram produções iguais a uma única poda aos 180 e 210 dias. A poda do guandu em decote apresentou maiores valores de massa verde, massa seca e N que o esqueletamento. This study was carried out to determine the maximum production period of organic matter from guandu [Cajanus cajan (L.) Millsp] and the effect of regular pruning, used to anticipate green manure management, in order to reduce competition with the coffee crop. The experiment was carried out in Venda Nova do Imigrante city, ES. Coffee seedlings were planted in April 1998 in a 2x1 m row spacing. C. cajan was seeded on October 5th, 2000, between the coffee plants, with ten guandu plants per meter. A randomized block design with a 2 x 4 factorial arrangement and six replications was used (each replication consisted of a 5m long row of guandu). The first factor was type of pruning, “decote” (pruning at 1 meter) and “esqueletamento” (pruning only of the lateral branches). The second factor was time of initiation of pruning (pruning initiated at 120, 150, 180 and 210 days after seeding, corresponding to February, March, April and May 2001), and subsequent prunings every 60 days afterwards. C. cajan maximum plant development was 17.77 t ha-1 of fresh matter on February 28th, 6.20 t ha-1 of dry matter on March 7th and 196.88 kg ha-1 of nitrogen on March 6th. The greatest concentration of nitrogen observed was 37.6 g kg-1 on March 20th. The best period for pruning C. cajan was between February 28th and March 20th (after this period the guandu did not accumulate biomass). The prunings done every 60 days after the initial pruning at 150 days allowed for the same production rate as one pruning at 180 and 210 days. In the production of green mass, dry mass and nitrogen the “decote” type of pruning was better than the “esqueletamento”. |
| URI: | http://repositorio.ufla.br/jspui/handle/1/13494 |
| Other Identifiers: | http://www.coffeescience.ufla.br/index.php/Coffeescience/article/view/40 |
| Appears in Collections: | Coffee Science |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ARTIGO_Manejo de Guandu [Cajanus cajan (L.) Millsp.] sob dois tipos de poda em lavoura cafeeira.pdf | 234,44 kB | Adobe PDF | View/Open |
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