Influência da capacidade de campo na taxa de crescimento do cafeeiro conilon

Dardengo, Maria Christina Junger Delôgo; Reis, Edvaldo Fialho dos; Passos, Renato Ribeiro

doi:10.1590/s0034-737x2010000100008

Cited by 10 publications

(10 citation statements)

References 8 publications

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“…Soares et al (2011) found similar results for tomato cultivation; so drought in the vegetative and reproductive phase provides lower height of plants, number of leaves and stem diameter. Analyzing the development of the coffee conilon it was found that drought reduced the stem diameter of this species (Dardengo et al, 2009). In rosemary-pepper cultivated at different irrigation levels, Alvarenga et al (2012) and Figueiredo et al (2009) observed better growth occurring with greater water availability.…”

Section: Resultsmentioning

confidence: 95%

Effect of different irrigation levels with different qualities of water and organic substrates on cultivation of pepper

Viviane¹,

Vera²,

Elka³

et al. 2016

Afr. J. Agric. Res.

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The amount of water needed to meet the water requirement of crops and use of alternative organic substrates affect the development of the plants' nutrients. The objective of this research is to evaluate the cultivation of pepper (Capsicum chinense) under different organic substrates and irrigation levels with supply water and wastewater. The experiment was conducted in a greenhouse at Campina Grande, Paraíba, Brazil. Biquinho BRS Moema pepper species was used. The experimental design was randomized block in a factorial design of 2 x 5 x 2. Two types of water (water supply and wastewater) and five water levels (L) were used based on the water requirement (WR) of the crop as follows: 100% WR (L5), 80% WR (L4), 60% WR (L3), 40% WR (L2) and 20% WR (L1); and two kinds of substrates (caprine and bovine) were also used, all in three replicates with two plants each. The germination percentage for bovine substrate averaged 44%, while for the caprine substrate, it was 18%. 24% increase in the number of leaves at level 4 was compared with that of level 5, where there was 20% reduction of WR of the plant. The pepper "Biquinho" irrigated with wastewater had better average, making it an alternative for irrigation. For the growth of pepper, it is not suitable to use irrigation values less than 40% of the water requirement for culture, because it influences negatively the development of the culture. For pepper, the ideal irrigation level is 80% of water requirement.

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Section: Resultsmentioning

confidence: 95%

Effect of different irrigation levels with different qualities of water and organic substrates on cultivation of pepper

Viviane¹,

Vera²,

Elka³

et al. 2016

Afr. J. Agric. Res.

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“…As for the higher values obtained by FCIPvg, we emphasize the importance of future comparisons with results determined in field, to confirm whether there is an overestimation or if the estimate is accurate. In experiments of irrigation management in Oxisols, higher values of water content corresponding to field capacity were chosen, as in the case of Dardengo et al (2010), who found an increased growth rate in coffee when, for irrigation management, the moisture at field capacity was estimated at 10 kPa compared with 33 kPa in a Red-Yellow Latosol, i.e., 33 kPa underestimated the upper limit of soil water availability for coffee for those conditions.…”

Section: Resultsmentioning

confidence: 99%

Plant-available soil water capacity: estimation methods and implications

Silva

Silva²,

Oliveira³

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYThe plant-available water capacity of the soil is defined as the water content between field capacity and wilting point, and has wide practical application in planning the land use. In a representative profile of the Cerrado Oxisol, methods for estimating the wilting point were studied and compared, using a WP4-T psychrometer and Richards chamber for undisturbed and disturbed samples. In addition, the field capacity was estimated by the water content at 6, 10, 33 kPa and by the inflection point of the water retention curve, calculated by the van Genuchten and cubic polynomial models. We found that the field capacity moisture determined at the inflection point was higher than by the other methods, and that even at the inflection point the estimates differed, according to the model used. By the WP4-T psychrometer, the water content was significantly lower found the estimate of the permanent wilting point. We concluded that the estimation of the available water holding capacity is markedly influenced by the estimation methods, which has to be taken into consideration because of the practical importance of this parameter.Index terms: field capacity, permanent wilting point, soil water retention curve modeling, Oxisol, land use planning.( RESUMO: CAPACIDADE DE ÁGUA DISPONÍVEL NO SOLO PARA AS PLANTAS: MÉTODOS DE ESTIMATIVA E IMPLICAÇÕESA capacidade de água disponível no solo para as plantas é definida como o conteúdo de água entre a capacidade de campo e o ponto de murcha permanente e tem vasta aplicação prática no planejamento do uso da terra. Em um perfil de Latossolo representativo da região do Cerrado, objetivaram-se estudar e comparar métodos de estimativa para o ponto de murcha permanente, empregando os aparelhos de psicrômetro WP4-T e a câmara de Richards, utilizando amostras com e sem preservação da estrutura, bem como para a capacidade de campo, estimando-a pela umidade do solo submetido às tensões 6, 10 e 33 kPa, e pelo ponto de inflexão da curva de retenção de água calculado nos modelos de van Genuchten e polinomial cúbico. Verificou-se que para o Latossolo em estudo a capacidade de campo determinada no ponto de inflexão apresenta maior valor de umidade em comparação aos demais métodos e que mesmo nesse ponto são encontradas diferenças na estimativa em razão do modelo utilizado. Pelo psicrômetro WP4-T, valores significativamente menores de umidade foram encontrados para a estimativa do ponto de murcha permanente. Concluiu-se que a capacidade de água disponível foi influenciada marcantemente pelo método utilizado na estimativa da capacidade de campo e do ponto de murcha permanente, o que precisa ser considerado em virtude da importância prática desse parâmetro.Termos de indexação: capacidade de campo, ponto de murcha permanente, modelagem da curva de retenção de água do solo, Latossolo, planejamento de uso terra.

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“…Dardengo et al (2009) report that decreases in growth rates in this period may also be associated with prolonged drought (43 days of drought occurred between 01/15 and 02/27, a period during which only one 25-mm irrigation could be performed). It is also noteworthy that conilon coffee plants show metabolic losses due to drought and also respond differently to soil water deficit (DaMatta et al, 2003;Pinheiro et al, 2004;Praxedes et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Growth comparison of 22 genotypes of conilon coffee after regular pruning cycle

Dalcomo¹,

Vieira²,

Ferreira³

et al. 2017

Afr. J. Agric. Res.

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A regular pruning cycle (RPC) reduces costs when implementing crop treatments and facilitates semimechanized harvesting. However, there is information on plant development under this system. Thus, this study aimed to assess the new branch growth of 22 genotypes of Coffea canephora (conilon) after a regular pruning cycle. The assay was conducted at Cachoeiro de Itapemirim, Southern Espírito Santo State, Brazil. Measurements of 12 morphoagronomic traits were performed, and their relationships with temperature and rainfall were studied. The branch vegetative growth rates varied seasonally throughout the assessment period, with higher growth rates and higher temperatures, even not extreme, during rainy periods and lower growth rates and milder temperatures during the dry season. The logistic model with best fit to describe pattern of cumulative growth by genotypes following RPC was sigmoid for all the studied traits.

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Influência da capacidade de campo na taxa de crescimento do cafeeiro conilon

Cited by 10 publications

References 8 publications

Effect of different irrigation levels with different qualities of water and organic substrates on cultivation of pepper

Effect of different irrigation levels with different qualities of water and organic substrates on cultivation of pepper

Plant-available soil water capacity: estimation methods and implications

Growth comparison of 22 genotypes of conilon coffee after regular pruning cycle

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