TCC Engenharia Agronômica

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https://repositorio.ifal.edu.br/handle/123456789/41

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Navegando TCC Engenharia Agronômica por Orientador "Silva, Samuel"

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    Ánalise meteorológica, produtividade e crescimento do milho irrigado durante as estações de verão e inverno no sertão alagoano
    (2023-07-04) Nunes, Willyane Ferreira; Silva, Samuel; http://lattes.cnpq.br/6455568737417686; Prates, Fabiano Barbosa de Souza; http://lattes.cnpq.br/6530012770891274; Silva, Jose Madson da; https://orcid.org/0000-0003-0237-4762; http://lattes.cnpq.br/5749870599305506
    The maize growing season throughout the year can influence its growth and productivity, since edaphoclimatic conditions vary between seasons. This study aimed to analyze the agrometeorological variables and evaluate the productivity and growth of corn grown at different times in the Sertão Alagoano region. For this, the hybrid AG7088 of high productive potential was used, which was tested at the Federal Institute of Alagoas/Campus Piranhas, the first season being from December 2016 to March 2017 and the second season from March to July 2018. The water requirement of the crop for irrigation management was calculated using crop evapotranspiration (ETc), obtained from a meteorological station located close to the experimental area. The agrometeorological analysis was carried out, in addition to the biometry of the plants, in which growth, leaf area index, canopy height, as well as grain yield and water use efficiency were evaluated. The results obtained in the two periods were submitted to Student's t test. Season 1 climatic conditions provided greater corn crop growth for the analyzed variables, with the exception of the leaf area index. The grain yield of irrigated corn is higher in the dry season in the region of Piranhas - AL, however, the efficiency in water use is lower due to the greater volume of water required for irrigation due to the high rates of evapotranspiration.
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    Efeito do déficit hídrico em diferentes fases fenológicas do milho, no Semiárido alagoano
    (2021-10-08) Sousa, Amanda Cibele da Paz; Teodoro, Iêdo; Silva, Samuel; https://orcid.org/0000-0002-7002-4388; http://lattes.cnpq.br/6455568737417686; Silva, José Madson da
    The deficit of water in the soil promotes physiological responses in the plant capable of altering the growth, development and yield of the crop, in which it is essential to study the behavior of the plant against water stress to determine the proper management of irrigation. This project aimed to evaluate the effect of water deficit on different phenological stages of corn in the semiarid region. The experiment was conducted at the Federal Institute of Alagoas/Campus Piranhas, from February to June 2019, the experimental design used in the experiment was strips with four replications, in which the treatments were five periods of submission of the crop to deficit stress water, which occurred from the following phases: tanning, pollination, milky grain, pasty grain and farinaceous grain (without stress). From the data collected during the experiment, the following steps were followed:estimation crop evapotranspiration (ETc), analysis of the effect of climatic elements on the crop, evaluation of plant growth, determination of productivity and evaluation of ear variables under the effect of water deficit, and verification of the level of impact of water stress caused in each phenological phase of the crop. Plants subjected to water deficit in the tasseling and flowering phases suffered variation, leaf area index (LAI), number of grains per spike, dry weight of a thousand grains and low yield when compared with plants subjected to the farinaceous grain phase. Radiation, air temperature and humidity do not dissipate in the thermal limitation for corn development throughout the cycle. Plants subjected to water deficit in the tasseling and flowering phase were less productive when compared to plants grown under full irrigation.
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    Uso econômico da água no cultivo do feijão caupi irrigado no semiárido alagoano
    (INSTITUTO FEDERAL DE ALAGOAS - Ifal, 2022-02-16) Silva, Carla Sabrina da; Silva, Samuel; https://orcid.org/0000-0002-7002-4388; http://lattes.cnpq.br/6455568737417686; Silva, Randerson Cavalcante; http://lattes.cnpq.br/7477067848979919; Silva, Jose Madson da; https://orcid.org/0000-0003-0237-4762; http://lattes.cnpq.br/5749870599305506
    Irrigation in agriculture allows conditions for genetic material to express its full production potential in the field, but scientific studies are needed to optimize the use of water in regions of difficult access to it, such as semi-arid regions. Therefore, the present study aimed to determine the economic irrigation depth for cowpea cultivation in the Sertão Alagoano region.A creole variety commonly cultivated by farmers in the region was used, which was subjected to five irrigation depths (30, 60, 90, 120 and 150% of crop evapotranspiration-ETc). The experiment was developed at the Federal Institute of Alagoas/Campus Piranhas, during the months of February to May 2018. The culture was irrigated by drip, in which irrigation costs plus planting costs and cultural treatments were used to determine the economic level of water, through the analysis of grain productivity. Yield differed statistically between the slides applied, according to the F test (p<0.05). The culture of cowpea of creole genetic nature has a low response to irrigation, in which the economic depth is independent of the selling price of the grain and is close to the depth that provides maximum physical yield.