Growth, development and yield of pawpaw (Carica papaya L.) ‘Homestead selection’ in response to soil moisture stress

Aiyelaagbe, I. O. O.; Fawusi, M. O. A.; Babalola, O.

doi:10.1007/bf02374293

Cited by 18 publications

(11 citation statements)

References 3 publications

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“…Even though the difference was small, T5 had the greatest crown diameters, during the entire evaluation period, having practically the same thermal units as T3, in the vicinity of 3,000°C d. Thus, in general papaya trees tend to reduce their crown diameters with time; however, the values verified in this work seem to be related to the lack of soil water (T1), which was also verified by Aiyelaagbe et al (1986), and to the low winter temperatures influencing all evaluated treatments, a condition also found by Silva (1999). No other reductions were detected.…”

Section: Resultssupporting

confidence: 72%

“…The estimated regressions did not present sufficiently high coefficients of determination, demonstrating that they do little to explain the data obtained, despite the observed significance. This could probably be related to the fact that in studies conducted by Aiyelaagbe et al (1986) and Awada et al (1979), while studying water stress in papaya trees, found that the no. of leaves of plants submitted to water stress decreases only due to leaf abcission and not because of the number of emitted leaves, since the numbers of nodes in the plants were the same, and only the distance between nodes was different, under the different moisture regimes.…”

Section: Resultsmentioning

confidence: 98%

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Growth and yield of papaya under irrigation

Almeida¹,

Bernardo²,

Sousa³

et al. 2003

Sci. agric. (Piracicaba, Braz.)

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Thermal units or degree day systems can both be used to quantify relationships between plants and air temperature. The Northern Fluminense region holds no tradition for irrigated papaya (Carica papaya L.) cropping and, because of the need for irrigation, it is important knowing its growth and development characteristics under these conditions. This study aimed to determine the relationship between growth rate of papaya plants and degree days, and its effect on crop productivity, under different irrigation levels. An experiment was set up with the cultivar "Improved Sunrise Soil 72/12", in a randomized blocks design, with seven irrigation water depths and three repetitions; crop growth and yield parameters were evaluated. There were significant correlations between water depths and degree days. Polynomial models of 2 nd and 3 rd order appropriately fitted the relationships degree day versus plant height, stem diameter, crown diameter and number of emitted leaves, for each water depth. Growth parameters related to degree days and to the applied treatments are indicative of yield potential. The total water depth that promoted the greatest fruit yield was 2,937 mm. Key words: irrigation management, development, papaya, productivity CRESCIMENTO E PRODUÇÃO DO MAMOEIRO SOB IRRIGAÇÃORESUMO: Entre os métodos de quantificar as relações entre as plantas e a temperatura do ar, estão os sistemas de unidades térmicas ou graus-dia. Sendo a região Norte Fluminense sem tradição no cultivo da cultura de mamão (Carica papaya L.) e devido a necessidade de irrigação, é importante que se conheça o comportamento de seu crescimento e desenvolvimento sob estas condições. O objetivo deste trabalho foi estudar o crescimento do mamoeiro em relação a graus-dia e seu efeito na produção, sob diferentes níveis de irrigação nesta região. Montou-se um experimento com a cultivar 'Improved Sunrise Solo 72/12', em um delineamento em blocos casualizados, com sete lâminas de irrigação e três repetições, procurando-se avaliar os parâmetros de crescimento e de produção. Houve interação significativa entre lâminas de irrigação e graus-dia. Modelos polinomiais de 2 a e 3 a ordem ajustaram significativamente a relação graus-dia X altura de plantas, diâmetro de caule, diâmetro de copa e número de folhas emitidas, para cada lâmina de irrigação. Os parâmetros de crescimento relacionados a graus-dia e aos tratamentos aplicados são indicativos de potencial de produção. A lâmina total de água que promoveu a maior produção de frutos foi de 2.937 mm. Palavras-chave: manejo de irrigação, desenvolvimento, mamão, produtividade

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Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 98%

Growth and yield of papaya under irrigation

Almeida¹,

Bernardo²,

Sousa³

et al. 2003

Sci. agric. (Piracicaba, Braz.)

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“…Tabela 5. Valores totais da lâmina aplicada (ETr), da evapotranspiração máxima da cultura (ETm), do déficit de evapotranspiração relativa (1 -ETr/ETm), da produção real comercial (Yrc), da produção máxima comercial (Ymc) e da queda de rendimento relativo (1 -Yrc/Ymc) nos diversos tratamentos realizados na cultura do mamoeiro Híbrido UENF/ CALIMAN01 Alguns pesquisadores, como Awada (1961), Awada et al (1979) e Aiyelaagbe et al (1986) afirmam que, em relação à produção comercial, o mamoeiro é muito sensível ao défi-cit de umidade no solo. Silva (1999) e Awada et al (1979) observaram, em relação à lâmina de água aplicada, que o incremento da produtividade total foi menor que o da produtividade comercial.…”

Section: Methodsunclassified

Relação entre a produtividade do mamoeiro e o déficit hídrico (ky) na região Norte Fluminense

Posse¹,

Bernardo²,

Sousa³

et al. 2009

Rev. bras. eng. agríc. ambient.

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RESUMOTeve-se como objetivo neste trabalho, determinar o coeficiente de resposta ao déficit hídrico na produção de frutos comerciais e totais do mamoeiro, cultivado na região Norte do Estado do Rio de Janeiro. O experimento foi realizado na área de convênio UENF/PESAGRO-RIO, no município de Campos dos Goytacazes, RJ, no período de 25/04/2006 a 18/05/2007, utilizando-se o mamoeiro cultivar Híbrido UENF/CALIMAN01 e um delineamento em blocos casualizados, com cinco tratamentos, correspondendo às reposições de 50% (T1), 75% (T2), 100% (T3), 125% (T4) e 150% (T5) da evapotranspiração de referência (ETo), com quatro repetições. A máxima produção comercial real da cultura, aos 13 meses de cultivo e com quatro meses de colheita, foi de 38,78 t ha -1 (T3) e a máxima produção total real encontrada foi de 49,42 t ha -1 (T5). O mamoeiro cultivar Híbrido UENF/CALIMAN01 conduzido até os 13 meses de cultivo e com quatro meses de colheita, apresentou um coeficiente de resposta de produção (ky) para frutos comerciais de 1,4581 e para produção total um coeficiente igual a 0,5674. Palavras-chave: Carica papaya L., coeficientes de sensibilidade, deficiência hídricaResponse coefficient of papaya yield to water stress (ky) in Northern Rio de Janeiro ABSTRACTThe objective of this study was to determine the response coefficient to water stress in the commercial and total yield of papaya fruits grown in the northern region of the State of Rio de Janeiro. The experiment was conducted in an area of UENF/PESAGRO-RIO in the municipality of Campos dos Goytacazes, Rio de Janeiro, from 25/04/2006 to 18/05/2007, using the papaya cultivar Hybrid UENF/CALIMAN01. The experiment had a randomized block design with five treatments [replacement of reference evapotranspiration (ETo) by 50% (T1), 75% (T2), 100% (T3), 125% (T4) and 150% (T5)], with four replications. The highest real commercial yield of the crop after 13 months of growth and four harvest months was 38.78 t ha -1 (T3) and the highest total real yield was 49.42 t ha -1 (T5). After 13 months of growth and 4 harvest months of the papaya cultivar Hybrid UENF/CALIMAN01 the response coefficient for commercial fruit yield (ky) was 1.4581 and 0.5674 for total yield.

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“…The dominant species such as M. indica were planted mainly for fruits, shade and windbreaks during storms to protect the housing units. Carica papaya and Psidium guajava produces fruits within short period within one and three years respectively, in addition to short gestation, the soil in Choba Park is well drained sandy soil suitable for such species (Aiyelaagbe et al, 1986). Pawpaw is one of the most nutritious fruit grown and consumed in Nigeria; it produces fruit throughout the year on good soil.…”

Section: Journal Of Environment and Ecologymentioning

confidence: 99%

Edible Fruit Trees Diversity in a Peri-Urban Centre: Implications for Food Security and Urban Greening

L¹,

Oladele²

2014

JEE

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One of the numerous sources of Edible fruits from trees in peri-uban centres are home gardens. However, there are limited research on the implication for food security and urban greening due to transient nature of farming in the cities. The aim of this study was to determine the extent of edible fruit tree (EFTs) planting in home garden in University of Port Harcourt and assess its impact on the social and physical environment as well as its contribution to food security and urban greening. Total enumeration of edible fruit bearing tree species in the residential areas was carried out in Choba and Delta parks of the university while, representative sample consisting of all student halls of residence and major streets in the staff quarters in the main university park enumerated. Mangifera indica (Mango) has the highest population of 91 trees while Prunus persica (Peach) was the least with a single tree population in Abuja Park. Carica papaya (Pawpaw), Psidium guajava (Guava), Cocos nucifera (Coconut), Elaeis guinensis (Oil palm) and Persia americana (Avocado pear) ranked high among the common fruit trees planted or conserved in residential areas of the University. Valued local species in the survey include; Irvingia wombulu (Bush mango/Ogbono), Chrysophyllum albidum (African star apple), Citrus sinensis (Sweet orange) and Dacryodes edulis (African pear). Site distribution of EFTs in the study showed that residential areas of Delta Park possess the highest population of EFTs (243) among the three Parks while Choba Park has the least EFTs populations (92 trees). EFTs diversity consists of Twelve (12) families distributed over Fifteen (15) genera. Palmae has the highest frequency while ISSN 2157-6092 2014 www.macrothink.org/jee 235 Rosaceae was the least with one species (Prunus persica (L) Batsch). Judging from the way the well-educated protect, conserve and plant ETFs within the University environment food security and urban greening can be achieved if it is extended to other public and private residential area within the peri-urban centres. Journal of Environment and Ecology

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Growth, development and yield of pawpaw (Carica papaya L.) ‘Homestead selection’ in response to soil moisture stress

Cited by 18 publications

References 3 publications

Growth and yield of papaya under irrigation

Growth and yield of papaya under irrigation

Relação entre a produtividade do mamoeiro e o déficit hídrico (ky) na região Norte Fluminense

Edible Fruit Trees Diversity in a Peri-Urban Centre: Implications for Food Security and Urban Greening

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