Desenvolvimento Da Parte Aérea Do Coqueiro Anão Verde Sob Aplicação De Fertilizantes

Silva, Elizio Sampaio; Lima, Francisco Nildomar Ribeiro; Neto, Luís G. Pinheiro; Menezes, Ademir Silva; Moreira, Francisco José Carvalho; Lopes, Francisca Gleiciane Nascimento

doi:10.7127/rbai.v11n400603

Cited by 2 publications

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“…It is a tree of great economic interest, since all its components are used: fruit, leaves, pulp, water, bark and fibers. The main economic activity involving this species is the production of green coconut, mainly for water production (SILVA et al, 2017). It is a culture of humid tropics; however, production is largely concentrated in semi-arid regions of northeastern Brazil, with high temperatures and little rain for most of the year (CÂMARA et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the critical points of the most adequate nonlinear model in adjusting growth data of ‘green dwarf’ coconut fruits

et al. 2021

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‘Green Dwarf’ coconut is a fruit of great economic interest, since all its components are used, in addition to water, its main component. It is a culture of humid tropics, widely produced in northeastern Brazil, being an important income source for the region. The phenology study of this type of fruit is extremely important, but there are few studies in literature. Regression models, especially nonlinear growth models, can be of great value to understand how fruit growth behaves. The scarcity of works of this nature may be linked to some difficulties in estimating parameters of nonlinear models, such as assigning initial values to the itterative process. Overcoming this difficulty, for regression analysis, linear or not, several steps need to be respected to ensure the validity of information. Much information can be extracted from nonlinear growth models, such as the asynotic value, growth rate and critical points (maximum acceleration point, inflection point, maximum deceleration point and asynotic deceleration point). The aim of this work was to describe the stages of nonlinear regression analysis and to estimate the critical points of ‘Green Dwarf ’ coconut growth curves. After initial adjustments, the only unmet assumption was independence, adding a first order autoregressive term. Again, models were adjusted and all parameters were significant, with both models, Gompertz and Logistic, adjusting well to data, with slight advantage for the Logistic model with better adjustment quality criteria values, with maximum expected LED and LEDKP values of 21.4037 cm and 21.5478 cm, respectively. The x and y axis of critical points were estimated, with values that can help producers to make more objective decisions about the appropriate time to harvest coconut fruits, considering the most diverse uses of this type of fruit.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the critical points of the most adequate nonlinear model in adjusting growth data of ‘green dwarf’ coconut fruits

et al. 2021

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“…Com relação à área colhida, o Brasil se destaca na 4º posição, dentre os países produtores, com 287.016 ha, segundo a FAO (2011). Sendo que as regiões Sudeste, Norte, Centro-Oeste e Nordeste, contribuíram para tal ranking com mais de 57.000 hectares implantados com coco, cuja finalidade é atender o mercado de frutos verdes in natura para consumo da água de coco (FONTES et al, 2002;SILVA et al, 2017), bem como produzir frutos destinados à agroindústria para produção de coco ralado e leite de coco (MARTINS; JESUS JÚNIOR, 2011; MARTINS; JESUS JÚNIOR, 2013).…”

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Frutos De Coco Seco Em Solo Com E Sem Plástico De Ráfia

Silva¹,

Lima

Pinto

et al. 2019

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Objetivou-se com esse trabalho verificar o uso do plástico de ráfia de solo como cobertura do solo sobre o aumento da quantidade de frutos (cachos) de coco seco por planta no período de 18 meses. O experimento foi instalado no período de maio de 2016 a outubro de 2017, na Empresa Ducoco Litoral SA, na Fazenda São Gabriel no município de Itarema/CE, com plantas de 30 anos de idade, espaçadas em 9 x 9 m em blocos ao acaso, com dois tratamentos (com e sem cobertura do solo utilizando plástico de ráfia) e cinco repetições, com cinco plantas úteis por parcela. A ráfia utilizada tipo carijó 100% polipropileno, alta resistência à tração e boa permeabilidade. O número médio de frutos nos primeiros meses de avaliação era de 16,04, 16,47 e 15,84 para os meses de maio/2016, junho/2016 e julho/2016, respectivamente, sendo iguais estatisticamente. As avaliações efetuadas nos meses de dezembro/2016, janeiro/2017 e junho/2017 são semelhantes de acordo com os dados estatísticos, apesar de ter diminuído o número de frutos de coco, mas não houve diferença. O plástico de ráfia carijó proporcionou condições desfavoráveis ao número de frutos de coco seco por ocasião da cobertura do solo. O solo coberto com plástico de ráfia ameniza a proliferação das ervas daninhas ao redor da planta de coco seco. Palavras-chaves: cobertura do solo, plasticultura, plantas daninhas.

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Desenvolvimento Da Parte Aérea Do Coqueiro Anão Verde Sob Aplicação De Fertilizantes

Cited by 2 publications

References 3 publications

Evaluation of the critical points of the most adequate nonlinear model in adjusting growth data of ‘green dwarf’ coconut fruits

Evaluation of the critical points of the most adequate nonlinear model in adjusting growth data of ‘green dwarf’ coconut fruits

Frutos De Coco Seco Em Solo Com E Sem Plástico De Ráfia

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