Plantas de pimentão cultivadas em ambiente enriquecido com CO&lt;sub&gt;2&lt;/sub&gt;. II. Produção de matéria seca

Rezende, Fátima Conceição; Frizzone, José Antônio; Pereira, Anderson Soares; Botrel, Tarlei Arriel

doi:10.4025/actasciagron.v24i0.2417

Cited by 7 publications

(6 citation statements)

References 11 publications

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“…The first leaf was taken from the superior part, the second in the middle part and the third from bottom of the plant canopy. Using average values of leaf length and width, the authors used the equation proposed by Rezende et al (2002). Plant leaf area was determined by multiplying leaf area by total number of leaves per plant.…”

Section: Methodsmentioning

confidence: 99%

Growth of sweet pepper plants submitted to water tensions in soil and potassium silicate doses

et al. 2019

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Water stress compromises plant growth. Resistance inducers, such as potassium silicate (K2SiO3), can reduce negative effects of this stress on Solanaceae, Capsicum annuum. Plant height, stem diameter and leaf area may indicate the efficiency of potassium silicate foliarsprayagainst water stress. The aim of this study was to evaluate the growth of sweet pepper plants under water stress and K2SiO3 doses. The experiment was conducted in randomized blocks in a split-plot scheme in space. The treatments consisted of four soil water stresses: 15 kPa (field capacity), 25 (intermediate value), 35 and 45 kPa (water stress) and three doses of potassium silicate (0, 0.4 and 0.8 L 100 L-1 water), acting as resistance inducers to water stress. The resistance inducer maintained greater heights of the sweet pepper plants, under water stress (35 and 45 kPa) at the initial stage [(20 days after transplanting (DAT)]. Smaller plant diameters were observed at 80 and 100 DAT at 35 and 45 kPa. Sprays using K2SiO3 maintained sweet pepper leaf area with higher values, even under stress condition. The soil water tension from 35 kPa limited, in general, the plant growth. Growth responses in Capsicum annuum to K2SiO3, via foliar spraying, varied according to plant age, as well as the growth parameter considered in this experiment.

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Section: Methodsmentioning

confidence: 99%

Growth of sweet pepper plants submitted to water tensions in soil and potassium silicate doses

et al. 2019

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“…Para estimativa da área da folha utilizou-se a seguinte equação de regressão, obtida por Rezende et al (2002), cujo coeficiente de determinação (R 2 ) foi de 0,9910, quando avaliaram o efeito da lâmina de água aplicada na altura, diâmetro do caule e área foliar de plantas de pimentão, híbrido Zarco. Y = 0,5979X em que: Y -área da folha, cm 2 X -área correspondente ao produto do comprimento (C) pela largura (L) da folha, cm 2 Obteve-se a área foliar multiplicando-se a área da folha pelo número total de folhas, por planta.…”

Section: Methodsunclassified

Crescimento e rendimento de pimentão fertigado sob diferentes lâminas de irrigação e doses de potássio

Albuquerque

Silva

Filho

et al. 2011

Rev. bras. eng. agríc. ambient.

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Objetivou-se, com este trabalho, avaliar o crescimento e a produtividade da cultura do pimentão sob influência de lâminas de irrigação e doses de potássio. O delineamento experimental adotado foi inteiramente casualizado, em esquema fatorial 5 x 2, com quatro repetições, sendo cinco lâminas de irrigação (80, 90, 100, 110 e 120% da ETc) e duas doses de potássio (80 e 120 kg ha-1 de K2O), aplicadas parceladamente, de acordo com a fase fenológica, por intermédio de sistema de irrigação por gotejamento, com emissores autocompensantes, instalado em uma bateria de 40 lisímetros de drenagem cultivados com pimentão (híbrido Maximos F1), localizada no campus da Universidade Federal Rural de Pernambuco (UFRPE), Recife, PE. O ciclo da cultura durou 142 dias; realizaram-se medições de altura e diâmetro do colo, variáveis de produção e estimativa do índice de área foliar ao final do ciclo. As variáveis de crescimento e de rendimento foram influenciadas pelas lâminas de irrigação e doses de potássio. Quando se fixou a menor dose, a estimativa do maior número de frutos por planta, peso médio de frutos e produtividade ocorreram com o emprego da lâmina de irrigação de máxima eficiência equivalente a 96, 120 e 102% da ETc, respectivamente.

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“…Tabasco varied by 14% between the lowest and the highest irrigation depth imposed at 116 DAT. Rezende et al (2002) also show that plant height is influenced by the volume of water applied. The maximum points estimated for FL ( Figure 3a) were at 103.76% (47.34 mm), FD (Figure 3b) at 123.50% (23.98 mm) and FW ( Figure 3c) 115.25% (5.98 g).…”

Section: Resultsmentioning

confidence: 83%

Growth of Capsicum chinense Jacq. subjected to different irrigation depths in the northeastern region of Pará, Brazil

Lima¹,

Lima²,

Santos³

et al. 2018

Científica

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Capsicum chinense Jacq. presents great prominence in the cuisine of Pará. This crop was cultivated with low technological level in its production chain, however, in the last years, there has been an increase in the size of the planted area, in view of the national and international recognition of the vegetable as a substitute for pepper. The objective of this work was to evaluate the effect of different irrigation depths on the yield of Capsicum chinense Jacq. cv. Lupita. The experiment was carried out at the Experimental Farm of the Federal Rural University of Amazonia (UFRA), located in the municipality of Igarapé-Açu-PA. The experimental design was a randomized block with five treatments and four replications. The treatments corresponded to five irrigation depths based on the evaporation of the Class 'A' pan (ECA) (30, 60, 90, 120 and 150% ECA). The results showed that the maximum commercial yield was 14.0 t ha-1 , reached at 101% ECA, which corresponds to a 724.50 mm depth, and the highest water use efficiency (22.78 kg ha-1 mm-1) was obtained with the 458.64 mm total water depth at 56% ECA.

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Plantas de pimentão cultivadas em ambiente enriquecido com CO<sub>2</sub>. II. Produção de matéria seca

Cited by 7 publications

References 11 publications

Growth of sweet pepper plants submitted to water tensions in soil and potassium silicate doses

Growth of sweet pepper plants submitted to water tensions in soil and potassium silicate doses

Crescimento e rendimento de pimentão fertigado sob diferentes lâminas de irrigação e doses de potássio

Growth of Capsicum chinense Jacq. subjected to different irrigation depths in the northeastern region of Pará, Brazil

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