Identificação Da Influência Da Pluviometria No Rendimento Do Milho No Semiárido Brasileiro

Lopes, José de Sousa Miguel; Dantas, Milena Pereira; Ferreira, Francisco Edson Paulo

doi:10.7127/rbai.v13n5001119

Cited by 6 publications

(7 citation statements)

References 9 publications

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“…Maize, also known as corn (Zea mays L.), can be used in human, animal, and bioenergy production (Lopes et al, 2019). It is considered moderately tolerant to irrigation with saline water with electrical conductivity of up to 1.7 dS m -1 , with no reduction in grain yield (Ayers & Westcot, 1999).…”

Section: Introductionmentioning

confidence: 99%

Maize crop yield in function of salinity and mulch

Costa

Goes

Almeida

et al. 2021

Rev. bras. eng. agríc. ambient.

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Irrigation with saline water affects the agronomic performance of the maize crop; however, the use of vegetal mulch may mitigate salt stress and promote an increase in yield. In this way, this study aimed to evaluate the grain yield of the maize plants submitted to different water salinity levels in the presence and absence of mulch. The experiment was conducted in a randomized block design arranged in a 2 × 2 factorial scheme. The first factor was the salinity of the irrigation water (1.0 and 4.0 dS m-1) and the second, with and without mulch, and five replicates. The variables analyzed were: unhusked ear mass, husked ear mass, cob mass, straw mass, husked ear diameter, husked ear length, and yield. The irrigation water with higher electrical conductivity affects negatively the ear mass with and without straw, ear diameter and ear length. The use of vegetation cover on the soil increased the unhusked ear mass with and without straw, ear diameter and length. The water with higher salinity (4.0 dS m-1) reduces the maize grain yield but with less intensity in the presence of mulch.

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Section: Introductionmentioning

confidence: 99%

Maize crop yield in function of salinity and mulch

Costa

Goes

Almeida

et al. 2021

Rev. bras. eng. agríc. ambient.

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“…Under full irrigation conditions, in the rainy season the maximum yield of cowpea (2998 kg ha -1 ) was observed in the treatment that received a five-day water suspension, while in the dry season, the maximum yield was 1763 kg ha -1 . Due to the great climatic variability in the northeastern semi-arid region, the adoption of techniques that enhance the increase of crop yield is of fundamental importance, such as the use of varieties that are more resistant to drought and mulching (Lopes et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…However, family farming faces major problems to achieve high yield, and this is mainly due to the fact that farmers are not able to exploit the production potential of the crop due mainly to the spatial-temporal variability of rainfall. In addition, there is still a lack of adoption of minimal techniques that enhance the increase in crop yield, such as the use of irrigation and varieties that are more resistant to drought (ABREU ARAÚJO et al, 2019;LOPES et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Water Demand and Technical-Economic Viability of Cowpea Grown in Different Production Scenarios

Ferreira

Silva

2022

NAT

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Water demand and agronomic and economic efficiency of cowpea are strongly related to agricultural practices and climatic conditions. This study aimed to determine in which cropping season cowpea has the highest water demand and maximum agronomic and economic efficiency as a function of water stress under the edaphoclimatic conditions of the semi-arid region of northeastern Brazil. Cowpea was cultivated in two cropping seasons (rainy and dry) and subjected to five forms of water stress (without water stress, water suspension for 5, 10 and 15 days and rainfed cultivation) and four replicates, started in the flowering and grain filling stages, under no-tillage system. Agronomic (yield, biomass, harvest index and water use efficiency) and economic (gross revenue, net revenue, rate of return and profit margin) parameters were evaluated. The water demand of cowpea in the dry season was 20.2% higher than in the rainy season; consequently, the Kc values obtained were also higher in this period. The climatic conditions that occurred during the cropping seasons and water stress negatively influenced the agronomic performance and financial profitability of cowpea, being more evident in the rainfed cultivation. For the edaphoclimatic conditions of the study, cowpea can be grown without significant losses of yield and profitability in both cropping seasons, provided that the water stress does not last more than 10 days during its reproductive stage.

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“…Maize (Zea mays L.), with its origin in Central America, is of great economic importance, and is cultivated worldwide. In Brazil it is one of the main cereals produced (21,581.9 million hectares), with emphasis on food for human and animal consumption and bioenergy production [1][2][3][4]. The crop has gradually expanded into arid and semi-arid regions, where it helps to solve problems related to food security in places that have limited water resources [5,6].…”

Section: Introductionmentioning

confidence: 99%

Bacillus aryabhattai Mitigates the Effects of Salt and Water Stress on the Agronomic Performance of Maize Under an Agroe-Cological System

Sousa¹,

Sousa²,

Viana³

et al. 2023

Preprint

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The use of plant growth-promoting bacteria can be one option for mitigating the impact of abiotic constraints on different cropping systems in the tropical semi-arid region. The aim of this study was to evaluate growth, leaf gas exchange and yield in maize inoculated with Bacillus aryabhattai, and subjected to water and salt stress. The experiment followed a randomised block design, in a split plot arrangement, with six repetitions. The plots comprised two levels of electrical conductivity for the irrigation water (ECw): 0.3 dS m-1 and 3.0 dS m-1; the subplots consisted of three irrigation depths (ID1: 50%, ID2: 75%, and ID3: 100% of the crop evapotranspiration (ETc)); while the sub-subplots included the presence or absence of Bacillus aryabhattai inoculant. A water deficit of 50% of the ETc resulted in the principal negative effects on growth, reducing the leaf area and stem diameter. The use of Bacillus aryabhattai mitigated salt stress and promoted better leaf gas exchange by increasing the CO2 assimilation rate, stomatal conductance, and internal CO2 concentration. However, irrigation with brackish water (3.0 dS m-1) reduced the instantaneous water use efficiency of the maize. Inoculation partially reduced the effects of abiotic stress due to morpho-physiological traits, and increased yield potential under water deficit with no salt stress.

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Identificação Da Influência Da Pluviometria No Rendimento Do Milho No Semiárido Brasileiro

Cited by 6 publications

References 9 publications

Maize crop yield in function of salinity and mulch

Maize crop yield in function of salinity and mulch

Water Demand and Technical-Economic Viability of Cowpea Grown in Different Production Scenarios

Bacillus aryabhattai Mitigates the Effects of Salt and Water Stress on the Agronomic Performance of Maize Under an Agroe-Cological System

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