Requerimento de água para irrigação do milho em Santa Catarina durante eventos La Niña

Minuzzi, Rosandro Boligon; Ribeiro, André Jr.

doi:10.1590/s1415-43662012001200010

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…Kopp et al (2015) studied four sowing dates between 1992 to 2012 in three municipalities of RS, and concluded an average water supplement of 393 mm was needed for maize, based on an average reduction of 55.2% in grain yield during the study period. As such, supplementary water was emphasized as one of the techniques necessary to stabilize the production of maize (MINUZZI; RIBEIRO, 2012). Bergamaschi et al (2006) observed, from a ten-year field experiment in the city of Eldorado do Sul, RS, that total irrigation provided an increase of nearly 70% in maize yield compared with non-irrigated crops.…”

Section: Introductionmentioning

confidence: 99%

Influence of Irrigation Levels and Plant Density on "Second-Season" Maize

et al. 2016

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-This study assessed the effect of different irrigation levels and plant densities on maize crops cultivated during the second season in the Western Border region of the State of Rio Grande do Sul. This work was conducted at the Federal Institute of Farroupilha -Alegrete Campus/RS -between January and June 2014. Treatments were arranged in a completely randomized 5 × 4 factorial design, with 3 replicates each. Irrigation of fixed amounts of water that were based on the evapotranspiration of the culture (Et c ): 0, 50, 75, 100, and 125% of Et c were applied at 5-day intervals. Four densities of plants were defined (4, 7, 10, and 13 plants m -2 ). We assessed number of maize ears per plant, number of grains per ear, aboveground dry matter, mass of 100 grains, harvest index, and grain productivity. The number of grains per ear, mass of 100 grains, and grain yield were influenced by irrigation levels. Plant density and water depth influenced the number of grains per ear, the mass of 100 grains, and grain productivity. The highest yield of winter maize grain was achieved with a combination of 13 plants per m -2 and an irrigation level of 100% of Et c . Specific densities of plants maximized the yield of maize at each irrigation level, demonstrating that choice of plant density is a critical variable in the second crop of maize, and significantly influences the components of production.

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Section: Introductionmentioning

confidence: 99%

Influence of Irrigation Levels and Plant Density on "Second-Season" Maize

et al. 2016

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“…Assim, pode-se concluir que, mesmo com a antecipação da data de semeadura, não irrigar significa quebra de produtividade, conforme as simulações realizadas pelo programa CROPWAT. MINUZZI & RIBEIRO (2012) Analisando a Tabela 6, observa-se que resultados não se diferem estatisticamente ao nível de 2,5%, pois há sobreposição entre os intervalos de confiança para os índices de quebra. Porém, os riscos de quebra de produtividade do milho aumentam quanto mais tardia for a semeadura, chegando a 45,9 % no mês de dezembro.…”

Section: Resultsunclassified

Estimativa Das Necessidades Hídricas Do Milho Cultivado Nas Condições Edafoclimáticas De São Mateus – Es

Sales¹,

Louzada²,

Oliveira³

et al. 2016

Encicl. Biosf.

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RESUMOA água é um recurso que limita muito a produtividade do milho na região norte do Espírito Santo. O objetivo do trabalho foi estimar a precipitação efetiva, evapotranspiração da cultura, lâmina de irrigação e quebra de produtividade da água no cultivo do milho na região de São Mateus -ES, para diferentes épocas de semeadura. Para identificar o requerimento de água para o milho, foi utilizado o programa CROPWAT 8.0, que calcula o balanço hídrico da cultura a partir de dados climáticos, de solo e da espécie cultivada. Os resultados mostraram que o CROPWAT recomendou o uso de irrigação nas nove datas de semeadura investigadas. No entanto, a antecipação da data de semeadura para 01/09, 15/09 e 1/10, possibilitará menores lâminas de irrigação suplementar e menor quebra de produtividade de água no cultivo do milho na região. PALAVRAS-CHAVE: Clima, solo, evapotranspiração, quebra de produtividade ESTIMATED NEEDS WATER MAIZE IN THE EDAFOCLIMATIC CONDITIONS OF SÃO MATEUS -ESABSTRACT Water is a resource that greatly limits the productivity of maize in the northern region of the Espírito Santo. The objective was to estimate the effective precipitation, evapotranspiration, water depth and water productivity drop in corn cultivation in the region of São Mateus -ES to different sowing times. For identify the water requirement for corn was used CROPWAT 8.0 software, which calculates the water balance of culture from climatic, soil and cultivated species. The results showed that the CROPWAT recommended the use of irrigation while the nine investigated sowing dates. However, early sowing date for 01/09, 15/09 and 1/10 enable smaller blades of supplemental irrigation and break water productivity in maize cultivation in the region.

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Agricultural traits and popping expansion of the popcorn hybrid IAC 125 under different plant densities and irrigation water depth levels

Stipp,

Possatto Junior,

Rossi

et al. 2023

Acta Sci. Agron.

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Popcorn (Zea mays L. everta) is a specialty crop with a higher aggregate economic value than that of common maize. In Brazil, national literature is still incipient and contradictory in terms of plant population management and water requirements. Furthermore, the interaction between these factors has not been reported, despite the increasing cultivation of popcorn. The objective of this trial was to determine whether agricultural traits and popping expansion from hybrid IAC 125 could be affected by plant density and levels of irrigation water, in addition to determining the significance level of the interaction between both factors. We investigated five plant populations (40,000, 55,000, 70,000, 85,000, and 100,000 plants ha-1) and five different levels of water depth in 2014/2015 [574.86 (without supplementary irrigation), 609.86, 644.86, 679.86 (control), and 714.86 mm] and 2015/2016 [857.4 (without supplementary irrigation), 867.26, 886.60, 916.78 (control), and 959.81 mm] using a complete block design with split-plot, comprising a main plot (for plant populations) and subplot (for water depth), with six replicates for each set. We found increasing linear effects from grain yield under population density and levels of water depth, but this interaction was not significant. Moreover, the popping expansion for the main effects and the interaction between plant populations and water depth, were not significant.

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Requerimento de água para irrigação do milho em Santa Catarina durante eventos La Niña

Cited by 4 publications

References 12 publications

Influence of Irrigation Levels and Plant Density on "Second-Season" Maize

Influence of Irrigation Levels and Plant Density on "Second-Season" Maize

Estimativa Das Necessidades Hídricas Do Milho Cultivado Nas Condições Edafoclimáticas De São Mateus – Es

Agricultural traits and popping expansion of the popcorn hybrid IAC 125 under different plant densities and irrigation water depth levels

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