Produtividade da palma forrageira cultivada em diferentes densidades de plantio

Silva, Laerte Marques da; Fagundes, Jaílson Lara; Viegas, Pedro Alberto Almeida; Muniz, E. N.; Rangel, J. H. de A.; Moreira, Andréia Luciane; Backes, Alfredo Acosta

doi:10.1590/0103-8478cr20131305

Cited by 69 publications

(61 citation statements)

References 3 publications

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“…This result is five months earlier than the 24 months commonly reported in the literature for the traditional nonirrigated system (Silva et al 2014c and2015a). Although this information is of great importance for the management of forage cactus, it is understood that these estimates may present errors because of extrapolation.…”

Section: Resultsmentioning

confidence: 49%

Phenophases and cutting time of forage cactus under irrigation and cropping systems

Amorim

Silva

Pereira

et al. 2017

Pesqui. Agropecu. Trop.

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Management practices can affect the phenology and, consequently, the harvest time and crop production level of forage cactus. This study aimed at evaluating the effect of irrigation depths and cropping systems on the phenophases and cutting time of the forage cactus Opuntia stricta (Haw.) Haw. The experimental design was a randomized block with split plots and four replications. Irrigation depths based on reference evapotranspiration (8.75 %, 17.5 %, 26.25 % and 35 % ETo) and a control (0 % ETo) made up the plots, while cropping systems (exclusive cropping, exclusive cropping on mulch and forage cactus-sorghum intercropping) were distributed in the subplots. Cladode emission morphogenesis was used to define the phenological phases, while the extrapolation of the monthly dry matter accumulation rate was applied to obtain the cutting time. The use of irrigation depths significantly increased the phenophase II (higher emission of second-order daughter cladodes), decreasing the phenophase III, associated with third-order daughter cladodes. The phenophase III was lower in the exclusive cropping on mulch and forage cactus-sorghum intercropping systems, when compared to the exclusive cropping system. The ideal cutting time for irrigated forage cactus is 19 months, regardless of the cropping system. The exclusive cropping on mulch and forage cactus-sorghum intercropping systems significantly increased the monthly forage dry matter accumulation rate, with an earlier cutting time for the forage cactus-sorghum intercropping system (17 months).

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Section: Resultsmentioning

confidence: 49%

Phenophases and cutting time of forage cactus under irrigation and cropping systems

Amorim

Silva

Pereira

et al. 2017

Pesqui. Agropecu. Trop.

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“…O elevado custo verificado com a compra de raquetes para o plantio está relacionado com a adoção da tecnologia de adensamento que é utilizada com o intuito de elevar a eficiência produtiva, resultando em uma maior produção de forragem por hectare. Silva et al (2014) , para a palma Miúda, representando uma importante ferramenta tecnológica a ser considerada no projeto de implantação do palmal e concluindo ser razoável a tentativa de redução do custo de aquisição, sem prejuízo da quantidade adquirida para iniciar o projeto de implantação do palmal.…”

Section: Resultsunclassified

Viabilidade econômica da produção de palma forrageira irrigada e adensada no semiárido Potiguar

Dantas¹,

Lima²,

Mota

2017

Rev. iPecege

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ResumoO semiárido potiguar pode ser uma excelente alternativa para a implantação de projetos de produção de palma irrigada e adensada por apresentar, em grande parte de seu território, clima desfavorável a produção dessa cultura em sistema de sequeiro. A irrigação e adensamento surge como uma alternativa viável economicamente para investidores. Assim, teve-se como objetivo estudar a viabilidade econômica da produção da palma forrageira irrigada e adensada no semiárido potiguar. A partir da análise dos dados, foi considerado o custo de produção de um hectare no município de Apodi, Rio AbstractThe Potiguar semiarid can be an excellent alternative, in great part of its territory, to implement projects of irrigated forage cactus in narrow rows because of the unfavorable weather to the production of this crop in rainfed system. Narrowing and irrigating come as feasible alternatives to investors. Thus, the objective was to study the economic feasibility of irrigated forage cactus production in narrow rows in the Potiguar semiarid. It was considered the production cost of one hectare based on the data collected in the city of Apodi, Rio Grande do Norte. In the project, it was analyzed the investment, maintenance costs, profitability and forecast growth in eight years. The Net Present Value [NPV], Internal Rate of Return [IRR], payback and breakeven point were obtained through cash flow considering a hurdle rate of 8%. The project was considered economically feasible because the NPV was R$ 105,892.49 and the IRR was 88%. The project annual net profit reached R$ 22,552.20, which added up through the eight years could come to the value of R$ 158,319.80. The payback showed that the investor would recover the initial investment in one year and nine months. The activity would be profitable if the productivity was at least 70,103 kg ha -1 .year -1 .

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“…In evaluation of plant densities in Opuntia and Nopalea, Cavalcante et al (2014) observed that increasing plant density reduced number of cladodes per plant, length and width of cladodes; however, there was increase in DM productivity, accumulation of water and nutrients per area. Silva et al (2014) tested plant densities ranging between 10,000 and 80,000 plants ha -1 and observed that in which: Y ijklm = represents the mean response of site i, in the block j, N fertilization k, P fertilization l and plant density m; µ = population mean; Si = site effect; b j = block effect; ε ijklm = random error; N l = N fertilization effect; P k = N fertilization effect; D m = plant density effect; (SN) ik = interaction effect between site and N fertilization; (SP) il = interaction effect between site and P fertilization; (SD) im = interaction effect between site and plant density; (NP) kl = interaction effect between N fertilization and P fertilization; (ND) km = interaction effect between N fertilization and plant density; (PD) lm = interaction effect between P fertilization and plant density; (SNPD) iklm = interaction effect between site, N fertilization, P fertilization and plant density.…”

Section: Resultsmentioning

confidence: 99%

“…Considering that Nopalea is resistant to carmine cochineal, there is a need to evaluate the response of this genus to the management practices used. Regarding the plant density, Silva et al (2014) The objective was to evaluate the effect of nitrogen and phosphorus fertilization, plant density and sites on productivity and chemical composition of the spineless cactus 'Miúda' (Nopalea cochenillifera, Salm Dyck).…”

Section: Introductionmentioning

confidence: 99%

Productivity and nutrient concentration in spineless cactus under different fertilizations and plant densities

Souza

Santos

Júnior

et al. 2017

Agraria

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The objective was to evaluate the productivity and nutrient concentration in spineless cactus 'Miúda' (Nopalea cochenillifera Salm Dyck) under levels of nitrogen (N) fertilization (0, 150, 450 and , nitrogen fertilization did not affect productivity, however, there was a linear increase in plots with 40,000 ha -1 plants. The plant N concentration increased with nitrogen fertilization and ranged from 7.3 to 9.9 g kg -1. The plant phosphorus (P) concentration was influenced by the interaction between all the factors evaluated and reduced until estimated fertilization of 322 kg N ha -1 in plots with 40,000 plants ha -1 and 150 kg P ha -1 and only in São Bento do Una, with P concentration of 1.19 g kg -1. Nitrogen fertilization increased N concentration in cladodes and productivity when using high plant density. The increase in planting density increases productivity and reduces the concentration of most nutrients, except sulphur (S). , a adubação nitrogenada não causou efeito na produtividade, entretanto, houve aumento linear em parcelas com 40.000 plantas ha -1 . A concentração de N na planta aumentou com adubação nitrogenada e variou entre 7,3 e 9,9 g kg -1. A concentração de fósforo (P) na planta foi influenciada pela interação entre todos os fatores avaliados e reduziu até a adubação de 322 kg N ha -1 em parcelas com 40.000 plantas ha -1 e 150 kg P ha -1 e apenas em São Bento, com concentração de P de 1,19 g kg -1. A adubação nitrogenada aumenta a concentração de N nos cladódios e eleva a produtividade quando se utiliza alta densidade de plantas. O aumento da densidade de plantio aumenta a produtividade e reduz a concentração da maioria dos nutrientes, exceto enxofre (S).

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Produtividade da palma forrageira cultivada em diferentes densidades de plantio

Cited by 69 publications

References 3 publications

Phenophases and cutting time of forage cactus under irrigation and cropping systems

Phenophases and cutting time of forage cactus under irrigation and cropping systems

Viabilidade econômica da produção de palma forrageira irrigada e adensada no semiárido Potiguar

Productivity and nutrient concentration in spineless cactus under different fertilizations and plant densities

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