Alterações Micrometeorológicas Em Ambientes Protegidos Cultivados Com Minitomate Orgânico

Araújo, Haroldo Ferreira de; Leal, Paulo Ademar Martins; Zorzeto, Thais Queiroz; Betin, Pâmela Santaguita; Nunes, Eduardo Fernandes; Servilha, G.F.P.

doi:10.15809/irriga.2016v21n2p226-238

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Such transmittance was lower in the module covered with anti-UV LDPE + freshnet, because the shade net has a thermoreflective characteristic and, therefore, reflects most of the incident GSR (Araújo et al, 2016). This cultivation module also had higher PAR/GSR, indicating higher percentage of PAR (Table 1).…”

Section: Resultsmentioning

confidence: 98%

Photo-selective shade nets on the production and quality of sugarcane plantlets

Júnior

Pandorfi

Filho

et al. 2019

Rev. bras. eng. agríc. ambient.

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Brazil is the world’s largest producer of sugarcane (Saccharum officinarum L.) and research aimed at propagation has promoted higher quality in production. The objective of this study was to investigate the effect of the variation of micrometeorological elements on the survival and quality of pre-sprouted sugarcane plantlets. The study was carried out in a protected environment (UFRPE). Plantlets of the cultivar RB92579 were obtained by the technique of production of pre-sprouted plantlets. The protected environments were divided into four modules covered with low-density polyethylene plastic + photo-selective shade nets and one module without shade net. Micrometeorological data of global and photosynthetically active solar radiation, air temperature, substrate temperature, relative humidity and the solar radiation spectrum were recorded in each module. The experiment was conducted in a completely randomized design and the principal component analysis was used to verify the association between the cultivation modules, micrometeorological variables and crop variables. Anti-UV low-density polyethylene plastic + freshnet led to lower transmittance of global solar radiation, higher percentage of photosynthetically active radiation and lower plantlet mortality. Substrate temperature above 30.2 °C resulted in higher plantlet mortality. Larger spectrum in the red range led to the production of better quality plantlet. The use of freshnet shade net promoted adequate conditions for the cultivation of sugarcane plantlets and allows obtaining better quality plantlets.

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Section: Resultsmentioning

confidence: 98%

Photo-selective shade nets on the production and quality of sugarcane plantlets

Júnior

Pandorfi

Filho

et al. 2019

Rev. bras. eng. agríc. ambient.

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“…Therefore, micrometeorological components were more attenuated in this module. Freshnet nets have thermo-reflective properties, thus increasing GSR reflection and Tair alleviation (Araújo et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Effects of Photoselective Shade Nets on Early Growth of Sugarcane Seedlings

et al. 2020

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Sugarcane has a great economic interest in Brazil, so it needs technologies to increase its yield strength, especially for seedling production. This study aimed to ascertain the influence of shading nets on early growth and development of pre-sprouted sugarcane seedlings. An experiment was conducted in a protected environment, in the Rural Federal University of Pernambuco (UFRPE), in Recife-PE, Brazil. The protected environments were covered with anti-UV low-density polyethylene plastic plus: Solpack ® red ultranet net, Solpack ® white net, Solpack ® freshnet net, and without shade net, and five replications each. The experiment was carried out in a completely randomized design, and multivariate principal component analysis (PCA) was used to verify associations among cultivation modules, micrometeorological factors, and seedling growth parameters. Anti-UV low-density polyethylene + shade net improved seedling growth and development up to 27 days after planting. Higher substrate temperatures benefited early growth of seedlings. After 27 days of planting, sugarcane seedlings required higher air temperatures, as well as increased global and photosynthetically active solar radiation.

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“…As crop cultivation conditions are strongly altered (Araújo et al, 2016), the use of protected cultivation for physalis production requires further studies on the most suitable time for seedling transplantation to the field.…”

Section: Introductionmentioning

confidence: 99%

Plastochron and yield of Physalis peruviana L. grown in different environments and transplanting dates

Zeist

Resende

Zanin

et al. 2020

SCA

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This study aimed to estimate plastochron, leaf area, and yield of Physalis peruviana seedlings grown in different environments and transplanted on different dates. The experiment was carried out in a completely randomized design, arranged in a 2 x 3 factorial scheme, namely: two cultivation environments (protected and field) and three transplanting dates (10/27/2013, 12/15/2013, and 02/11/2014). Four replicates of eight plants were used per plot, and the four central plants composed the useful area. Based on mathematical models and temperature data, plastochron was estimated for the entire crop cycle and vegetative and reproductive phases separately. Leaf area and node number were measured, and their relationship established at the end of the study. Other variables assessed were fruit number, mass, and yield per plant. Our results showed that the higher temperatures in the protected environment anticipated phenological timings. Plastochron values of 60.0 and 16.5 °C day-1 can be used during vegetative and reproductive stages, respectively. The protected environment increased vegetative growth and development, as well as yield of P. peruviana seedlings. In the Guarapuava-PR region, P. peruviana seedlings should be transplanted during the spring so that higher fruit yield and quality could be achieved.

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Alterações Micrometeorológicas Em Ambientes Protegidos Cultivados Com Minitomate Orgânico

Cited by 5 publications

References 11 publications

Photo-selective shade nets on the production and quality of sugarcane plantlets

Photo-selective shade nets on the production and quality of sugarcane plantlets

Effects of Photoselective Shade Nets on Early Growth of Sugarcane Seedlings

Plastochron and yield of Physalis peruviana L. grown in different environments and transplanting dates

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