Abstract:Objetivou-se avaliar o crescimento e qualidade de mudas de Schizolobium amazonicum (Huber ex Ducke) sob tratamento pré-germinativo de semente e aplicação foliar de agentes químicos durante a formação. O experimento foi realizado realizados no laboratório de análises de sementes e casa de vegetação da Universidade Estadual de Mato Grosso do Sul/Unidade Universitária de Cassilândia-MS. Utilizou-se o delineamento inteiramente casualizado, em esquema fatorial 2x3, sendo constituído por dois tratamentos pré-germina… Show more
“…The DQI is a vital parameter to assess seedling quality, being more important than variables such as height (Dickson et al 1960;Matos et al 2020). Another variable of great importance to be considered is the RDM; it was observed that the seedlings from the 42%/50% greenhouse, as well as those from the 30% screenhouse, had roots with high weight, which means that there was an investment in producing denser roots, a characteristic of rustic plants that can adapt and survive in an environment more easily than plants with more fragile roots with less dry matter (Carneiro 1995), in addition to expanding the absorption of nutrients and promoting growth and superior performance.…”
Section: Literature Citedmentioning
confidence: 99%
“…The use of mirrors as reflective material on benches in cultivation provided better seedlings of baru (Dipteryx alata Vog. )(Costa et al 2020a); however, the use of aluminized screen (Aluminet ® ) did not increase their quality (da Costa et al 2020). Seedlings of rubber tree rootstock (Hevea brasiliensis), clone GT1, showed a robust root system and better-quality seedlings on benches with Aluminet ® reflective material (Costa et al 2021).…”
Background
Oiti (Licania tomentosa[Benth.] Fritsch)
is an option for urban forestation and rural environments that require
shading by plants, so studying the plant environment to obtain quality
seedlings is essential. The present study aimed to evaluate oiti
seedlings in different protected environments with or without reflective
material on a cultivation bench.
Methods
The following protected environments were evaluated: an agricultural
greenhouse covered with a low-density polyethylene film and a
thermo-reflective screen with 42%/50% shading under the film; an
agricultural screenhouse with an aluminized screen with 35% shading; an
agricultural screenhouse with a black screen with 30% shading; and an
agricultural screenhouse with a black screen with 18% shading.
Production systems with and without photosynthetically active
radiation-reflecting material (aluminized screen,
Aluminet®) on the cultivation bench were
assessed in each protected environment.
Results
There was no interaction between the environmental factors; however,
the environments influenced height, stem diameter, root dry matter, and
total biometric relationships and growth rates. The reflective material
did not improve the quality of oiti seedlings. The ratio of shoot and
root dry matter was, on average, 71% for the shoots and 29% for the
roots. The photosynthetically active radiation received by oiti
seedlings ranged from 600 to 1,100 μmol
m−2s−1.
Conclusions
The greenhouse with 42%/50% shading screen under the film and the
black screen with 30% shading were the best environments for the
formation ofLicania tomentosaseedlings. The
reflective material on the cultivation bench did not result in better
quality oiti seedlings.
“…The DQI is a vital parameter to assess seedling quality, being more important than variables such as height (Dickson et al 1960;Matos et al 2020). Another variable of great importance to be considered is the RDM; it was observed that the seedlings from the 42%/50% greenhouse, as well as those from the 30% screenhouse, had roots with high weight, which means that there was an investment in producing denser roots, a characteristic of rustic plants that can adapt and survive in an environment more easily than plants with more fragile roots with less dry matter (Carneiro 1995), in addition to expanding the absorption of nutrients and promoting growth and superior performance.…”
Section: Literature Citedmentioning
confidence: 99%
“…The use of mirrors as reflective material on benches in cultivation provided better seedlings of baru (Dipteryx alata Vog. )(Costa et al 2020a); however, the use of aluminized screen (Aluminet ® ) did not increase their quality (da Costa et al 2020). Seedlings of rubber tree rootstock (Hevea brasiliensis), clone GT1, showed a robust root system and better-quality seedlings on benches with Aluminet ® reflective material (Costa et al 2021).…”
Background
Oiti (Licania tomentosa[Benth.] Fritsch)
is an option for urban forestation and rural environments that require
shading by plants, so studying the plant environment to obtain quality
seedlings is essential. The present study aimed to evaluate oiti
seedlings in different protected environments with or without reflective
material on a cultivation bench.
Methods
The following protected environments were evaluated: an agricultural
greenhouse covered with a low-density polyethylene film and a
thermo-reflective screen with 42%/50% shading under the film; an
agricultural screenhouse with an aluminized screen with 35% shading; an
agricultural screenhouse with a black screen with 30% shading; and an
agricultural screenhouse with a black screen with 18% shading.
Production systems with and without photosynthetically active
radiation-reflecting material (aluminized screen,
Aluminet®) on the cultivation bench were
assessed in each protected environment.
Results
There was no interaction between the environmental factors; however,
the environments influenced height, stem diameter, root dry matter, and
total biometric relationships and growth rates. The reflective material
did not improve the quality of oiti seedlings. The ratio of shoot and
root dry matter was, on average, 71% for the shoots and 29% for the
roots. The photosynthetically active radiation received by oiti
seedlings ranged from 600 to 1,100 μmol
m−2s−1.
Conclusions
The greenhouse with 42%/50% shading screen under the film and the
black screen with 30% shading were the best environments for the
formation ofLicania tomentosaseedlings. The
reflective material on the cultivation bench did not result in better
quality oiti seedlings.
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