Determinação Do Padrão Do Manejo Da Irrigação Praticada No Perímetro Irrigado Baixo Acaraú, Ceará, via Análise Multivariada

Lopes, Fernando Bezerra; Souza, Francisco de; Andrade, Eunice Maia de; Meireles, Ana Célia Maia; Caitano, Rafaela Ferreira

doi:10.15809/irriga.2011v16n3p301

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…According to Lopes et al (2011), when conducting interviews with lot owners in the Lower AcaraúIrrigation Perimeter, they found that 77.78% of the producers had had no experience with irrigated agriculture before arriving in the area. They concluded that existing irrigation management in the perimeter was inadequate, and that producers could not determine when or how much to irrigate.…”

Section: Producer Profilementioning

confidence: 99%

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Irrigation productivity and water-use efficiency in papaya crop under semi-arid conditions

Feitosa¹,

AraÃojo²,

Oliveira³

et al. 2016

Afr. J. Agric. Res.

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Papaya (Carica papaya L.) has a great economic importance in tropical and subtropical countries, Brazil being one of the largest producers of papaya in the world. This crop requires a considerable amount of water during its cycle, making proper irrigation management essential for optimal water use. Improving water-use efficiency can increase levels of agricultural production as well as the efficient use of water resources in semi-arid regions.The aim of this work was to evaluate productivity and water-use efficiency of irrigation inpapaya. The research was carried out in the Curupatiirrigation Perimeter, located in the semi-arid region of Brazil. The volume of water applied to the crop was quantified by calculating the number of operating hours of the pump unit supplying the irrigated lot, determining the flow rate of the emitters used in the irrigation system, and evaluating the soil moisture profile.The total volume of water applied was 2,663,296.20 m 3 , for a yield that ranged from 80 to 106 t ha -1 . For water-use efficiency, it was found that for each kilogram of papaya produced, 1,042 m 3 of water were consumed, giving a productivity of 0.95 kg m 3 . The water-use efficiency was affected by the different types of soil in the irrigation perimeter.

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Section: Producer Profilementioning

confidence: 99%

“…The activity emerged in the Northeast of Brazil following a significant growth in the market, and has resulted in greater production and higher incomes for the sector, especially fruit farming, which has assumed a prominent place in this scenario (Lopes et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Irrigation productivity and water-use efficiency in papaya crop under semi-arid conditions

Feitosa¹,

AraÃojo²,

Oliveira³

et al. 2016

Afr. J. Agric. Res.

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“…It is highly susceptible to pests and diseases, and has high demand for inputs and services, which lead to high financial investment per unit area. Furthermore, Lopes and others [4] remarked that good productivity requires availability of water throughout the cycle [5], as the tomato plant is very sensitive to water stress. The commercial value of the table tomato is defined by the characteristics and quality of the fruit [6].…”

Section: Introductionmentioning

confidence: 99%

Tomato Yield and Quality Response to Water Application Technique and Management

Gashari

Semwogerere

Kucel

et al. 2021

EJENG

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Tomato (Lycopersicon esculentum Mill) is one of the most important and has the highest acreage of any vegetable crop in the world. Such quantitative analysis is based on the assessment of data from sequential collections of plant traits linked to environmental conditions, as well as yield potential under optimal growth conditions. The objective in this study was to evaluate the performance of tomato crop under furrow, basin and hosepipe irrigation techniques in Kabos, Serere District of Eastern Uganda. The materials and methods used in this study included tools like water pump (model DCX2-50D), Tomato variety Rionex, weighting scale, CROPWAT 8.0 software, CANOPEO software among others. Generally, quantitative techniques through several experiment designs were used. Daily and monthly weather variables, in-situ primary datasets of plant height, canopy cover percentages and fruit characteristics, and weight of harvested tomatoes were measured at three growth stages and analyzed using RCBD experiment with six treatments and four replications. Findings showed that overhead treatments had lowest rate of rotten yield compared to basin and furrow but had highest rate of discolored fruits attributed to sunshine and impact of water pressure during irrigation. Rotting of yield was highest in basin treatments. The rotting was attributed to water logging, poor drainage that accelerated fungal infection in the tomatoes. Furrow treatments had better drainage which reduced quantity of nonmarketable yield. There was no significant difference on the weight of tomatoes below 65g. This meant that fruit weight was independent of irrigation method. Treatments under hosepipe irrigation-overhead. Conclusively, water management practices have big impact on the crop yield giving a relationship that yield is directly proportional to water management practices, which however, should be followed by detailed soil and water analysis through such studies. The Safe-Water-for Food (SWFF) target can be reached and eventually reduce on the global hunger syndrome.

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“…Get values from the crop water consumption through evapotranspiration estimates is essential for sizing and management of irrigation systems, mainly because it is growing awareness of the importance of water resources (Lopes et al, 2011;Rodrigues et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Analysis of reference evapotranspiration of Janaúba, mg

Reis

Oliveira

Lopes³

2016

Idesia

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Knowledge of the reference evapotranspiration (ETo) is essential for the irrigation management of agricultural crops worldwide. The Penman Monteith demand different weather variables, which hinders its application in areas with few weather stations such as the north of Minas Gerais. This work, compare the method of Hargreaves Samani with Penman Monteith and determine the frequency of occurrence of the reference evapotranspiration in the city of Janaúba, MG. To assess the fit of Hargreaves Samani equation with Penman Monteith used the coefficient of determination (r 2 ), the coefficient of correlation (r), the standard error of estimate (SEE), the index agreement (d) and the index performance (c). Kimball's method was used for determining the frequency of occurrence. The results indicate that the Hargreaves Samani method overestimates the values of Penman Monteith at 8%, but in the monthly analysis, it is observed that between the months April to August Penman values were superior to Hargreaves. All statistical criteria used showed Hargreaves Samani fitted equation with a better assessment when compared with the Penman Monteith. The higher frequency of occurrence was between 4.5 and 4.7 mm day -1 (6.62%) and the equation that indicates the probability of being equaled or exceeded evaporation showed an r 2 equal to 0.9676.Key words: Penman Monteith, Hargreaves Samani, frequency of occurrence, water, agrometeorology. RESUMEN El conocimiento acerca de la evapotranspiración de referencia (ETo) es esencial para el manejo del riego en los cultivos agríco-las en todo el mundo. El método de Penman Monteith utiliza diversas variables meteorológicas, dificultando su utilización en regiones con pocas estaciones meteorológicas, como es el caso del norte de Minas Gerais. El objetivo de este trabajo fue realizar una comparación entre los métodos de Hargreaves Samani y Penman

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Determinação Do Padrão Do Manejo Da Irrigação Praticada No Perímetro Irrigado Baixo Acaraú, Ceará, via Análise Multivariada

Cited by 4 publications

References 11 publications

Irrigation productivity and water-use efficiency in papaya crop under semi-arid conditions

Irrigation productivity and water-use efficiency in papaya crop under semi-arid conditions

Tomato Yield and Quality Response to Water Application Technique and Management

Analysis of reference evapotranspiration of Janaúba, mg

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