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DOSE AND MODE OF APPLICATION OF THE WATER-ABSORBENT COPOLYMER ON GROWTH OF BERMUDAGRASS
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DOSE AND MODE OF APPLICATION OF THE WATER-ABSORBENT COPOLYMER ON GROWTH OF BERMUDAGRASS LEANDRO JOSÉ GRAVA DE GODOY1; MARCOS RENATO VILLARON XAVIER E BARBOSA2; MARCELO VIEIRA FERRAZ1; LUIS AUGUSTO SAES2 E MARCOS VIEIRA FERRAZ3 1Professor Assistente Doutor do curso de Engenharia Agronômica, Universidade Estadual Paulista, Câmpus Experimental de Registro, Registro, SP, Brasil, legodoy@registro.unesp.br; ferraz@registro.unesp.br.2Graduando do curso de Engenharia Agronômica, Universidade Estadual Paulista, Câmpus Experimental de Registro, Registro, SP, Brasil, marcosvxb@hotmail.com; luis_saes@registro.unesp.br.3Pós-doutorando, Departamento de Horticultura, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Câmpus de Botucatu, SP, Brasil, ferrazmarcos@yahoo.com.br. 1 ABSTRACT The present study aimed to evaluate the effects of water-absorbent copolymer in the growth of Bermudagrass, planted in a sandy substrate and soil medium texture. The treatments consisted of five doses of the copolymer (0, 25, 50, 75 or 100 g m-2), and two application modes (dry and hydrated) in a completely randomized design with five replications. During the experimental period turfs were subjected to a period of 10 days without watering. For the sandy substrate, when subjected to water stress, there was linear increase on dry mater production of clippings (growth) in function doses of water-absorbent copolymer. The major dry mater of roots was achieved by application of the copolymer at a dose of 56 g m-2 hydrated. For the soil medium textured copolymer hydrated in doses 50-54 g m-2 water-absorbent copolymer showed greater production of dry mater of clippings of Bermudagrass cv. Celebration applied in powder and hydrated forms respectively. For medium textured soil this water-absorbent copolymer did not influence the intensity of green color, not the green coverage rate of the turfgrass. The application of hydrated copolymer reduced the dry matter of roots in the soil of medium texture. Keywords: Hydrogel, Cynodon dactylon (L.) Pers, Maintenance, Turfgrass. GODOY, L. J. G.; XAVIER E BARBOS, M. R. V.; FERRAZ, M. V.; SAES, L. A.; FERRAZ, M. V.DOSES E MODOS DE APLICAÇÃO DE COPOLÍMERO HIDROABSORVENTE NO CRESCIMENTO DA GRAMA BERMUDA 2 RESUMO Com o presente estudo, objetivou-se avaliar os efeitos do copolímero hidroabsorvente no crescimento da grama bermuda, plantada em substrato de areia e solos de textura média. Os tratamentos consistiram da aplicação de cinco doses do copolímero (0; 25; 50; 75; 100 g m-2), e dois modos de aplicação (seco e hidratado), num delineamento inteiramente casualizado com cinco repetições. Durante o período experimental as gramas foram submetidas a um período sem irrigação de 10 dias. Para o substrato arenoso quando submetido a estresse hídrico houve efeito linear do copolímero sobre a produção de fitomassa seca de aparas (crescimento). A maior fitomassa de raízes foi alcançada com a aplicação do copolímero na dose de 56 g m-2 de forma hidratada. Já para o solo de textura média o copolímero na forma hidratada nas doses de 50 a 54 g m-2 do copolímero proporcionou maior produção de fitomassa seca de aparas da grama bermuda cv. Celebration aplicados em pó e de forma hidratada, respectivamente. Para o solo de textura média este copolímero não influenciou a intensidade de cor verde, nem a taxa de cobertura verde do gramado. A aplicação do copolímero hidratado reduziu a fitomassa seca das raízes, em solo de textura média. Palavras-Chave: Hidrogel, Cynodon dactylon (L.) Pers, Manutenção, Gramado.
Brazilian Journal of Irrigation and Drainage - IRRIGA
Title: DOSE AND MODE OF APPLICATION OF THE WATER-ABSORBENT COPOLYMER ON GROWTH OF BERMUDAGRASS
Description:
DOSE AND MODE OF APPLICATION OF THE WATER-ABSORBENT COPOLYMER ON GROWTH OF BERMUDAGRASS LEANDRO JOSÉ GRAVA DE GODOY1; MARCOS RENATO VILLARON XAVIER E BARBOSA2; MARCELO VIEIRA FERRAZ1; LUIS AUGUSTO SAES2 E MARCOS VIEIRA FERRAZ3 1Professor Assistente Doutor do curso de Engenharia Agronômica, Universidade Estadual Paulista, Câmpus Experimental de Registro, Registro, SP, Brasil, legodoy@registro.
unesp.
br; ferraz@registro.
unesp.
br.
2Graduando do curso de Engenharia Agronômica, Universidade Estadual Paulista, Câmpus Experimental de Registro, Registro, SP, Brasil, marcosvxb@hotmail.
com; luis_saes@registro.
unesp.
br.
3Pós-doutorando, Departamento de Horticultura, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Câmpus de Botucatu, SP, Brasil, ferrazmarcos@yahoo.
com.
br.
1 ABSTRACT The present study aimed to evaluate the effects of water-absorbent copolymer in the growth of Bermudagrass, planted in a sandy substrate and soil medium texture.
The treatments consisted of five doses of the copolymer (0, 25, 50, 75 or 100 g m-2), and two application modes (dry and hydrated) in a completely randomized design with five replications.
During the experimental period turfs were subjected to a period of 10 days without watering.
For the sandy substrate, when subjected to water stress, there was linear increase on dry mater production of clippings (growth) in function doses of water-absorbent copolymer.
The major dry mater of roots was achieved by application of the copolymer at a dose of 56 g m-2 hydrated.
For the soil medium textured copolymer hydrated in doses 50-54 g m-2 water-absorbent copolymer showed greater production of dry mater of clippings of Bermudagrass cv.
Celebration applied in powder and hydrated forms respectively.
For medium textured soil this water-absorbent copolymer did not influence the intensity of green color, not the green coverage rate of the turfgrass.
The application of hydrated copolymer reduced the dry matter of roots in the soil of medium texture.
Keywords: Hydrogel, Cynodon dactylon (L.
) Pers, Maintenance, Turfgrass.
GODOY, L.
J.
G.
; XAVIER E BARBOS, M.
R.
V.
; FERRAZ, M.
V.
; SAES, L.
A.
; FERRAZ, M.
V.
DOSES E MODOS DE APLICAÇÃO DE COPOLÍMERO HIDROABSORVENTE NO CRESCIMENTO DA GRAMA BERMUDA 2 RESUMO Com o presente estudo, objetivou-se avaliar os efeitos do copolímero hidroabsorvente no crescimento da grama bermuda, plantada em substrato de areia e solos de textura média.
Os tratamentos consistiram da aplicação de cinco doses do copolímero (0; 25; 50; 75; 100 g m-2), e dois modos de aplicação (seco e hidratado), num delineamento inteiramente casualizado com cinco repetições.
Durante o período experimental as gramas foram submetidas a um período sem irrigação de 10 dias.
Para o substrato arenoso quando submetido a estresse hídrico houve efeito linear do copolímero sobre a produção de fitomassa seca de aparas (crescimento).
A maior fitomassa de raízes foi alcançada com a aplicação do copolímero na dose de 56 g m-2 de forma hidratada.
Já para o solo de textura média o copolímero na forma hidratada nas doses de 50 a 54 g m-2 do copolímero proporcionou maior produção de fitomassa seca de aparas da grama bermuda cv.
Celebration aplicados em pó e de forma hidratada, respectivamente.
Para o solo de textura média este copolímero não influenciou a intensidade de cor verde, nem a taxa de cobertura verde do gramado.
A aplicação do copolímero hidratado reduziu a fitomassa seca das raízes, em solo de textura média.
Palavras-Chave: Hidrogel, Cynodon dactylon (L.
) Pers, Manutenção, Gramado.
.
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