Effect of sodium and nitrogen on yield function of irrigated maize in southern Portugal

Ramos, Tiago B.; Gonçalves, M. C.; Castanheira, Nádia; Martins, José; Santos, Francisco L.; Prazeres, A.; Fernandes, Marcelo A. C.

doi:10.1016/j.agwat.2008.09.023

Cited by 13 publications

(5 citation statements)

References 37 publications

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“…This can be interpreted that fertilizers have a greater impact on crop yield, when they are combined with the appropriate level of irrigation. Similar results were also referred in literature [8][9][10][11]. …”

Section: Resultssupporting

confidence: 79%

Effect of Fertilization and Irrigation on Plant Mass Accumulation and Maize Production (Zea mays)

Z¹,

A²

2015

Int J Waste Resources

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The efficiency levels of nitrogen fertilization on growth and yield of maize (Zea mays) at two different levels of irrigation were examined. The experimental work was carried out at the farm of the Technological Educational Institute of Kalamata. The soil characteristics include: sandy clay soil texture, 11.07% CaCO 3 , slightly acidic to neutral pH, non-saline, sufficient organic matter, adequate nitrogen, phosphorus, potassium and magnesium concentrations. Plot dimensions were equal to 3.0x4.0 m with four rows of plants per 0.75 cm in each plot of which the two inner rows represent the experimental surface. The experimental design was a Randomized Block Design. The experiment consisted of six treatments in three replications, with two levels of soil water capacity (70 and 40% respectively). N levels were 0, 160, 240 kg/ha, while the P and K levels were kept constant at 100 kg/ha. The amounts of P, K and 30% of N were added to the basic fertilization before sowing. The remaining N amount separated to two doses, at different growth stages of maize and incorporated through the irrigation system. The type of fertilizers was ammonium sulfate, ammonium nitrate, superphosphate and potassium sulfate. Based on the experimental data, it was found that the fed conditions greatly influence the nature and direction of the processes involved in developing plant, the addition of nutrients, regardless of treatment combination and their dosages, affected positively the plant growth, the fresh plant mass accumulation and the weight of 1000 grains compared to plants cultivated in soil without nitrogen. The total plant weight increase was equal to 59.13% compared to plants cultivated in soil with lack of nitrogen maintaining N, P, K levels to 240, 100, 100 kg/ha and soil water capacity to 70%. High seed yields were observed with the addition of 160 and 240 kg/ha N, constant levels of P and K, and 70% of soil water capacity. Low seed yields were observed when the level of irrigation was 40% of soil water capacity regardless the added amount of N, P and K. This can be interpreted that fertilizers have a high impact on crop yield, when combined with the appropriate level of irrigation.

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Section: Resultssupporting

confidence: 79%

Effect of Fertilization and Irrigation on Plant Mass Accumulation and Maize Production (Zea mays)

Z¹,

A²

2015

Int J Waste Resources

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“…After sowing, a top dressing was supplied consisting on four different N fertilization doses (0, 100, 200 and 400 kg ha −1 ). The application of nitrogen doses up to 200 kg ha −1 is a common practice in field experiments involving maize plants (Ma and Dwyer, 1998;Ramos et al, 2009). However, depending on the area and irrigation system, maize N uptake can be over 250-300 kg ha −1 (Berenguer et al, 2009).…”

Section: Field Experimentsmentioning

confidence: 98%

High nitrate supply reduces growth in maize, from cell to whole plant

Saiz-Fernández

Diego

Sampedro

et al. 2015

Journal of Plant Physiology

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“…The study was conducted for six months. The various tests were conducted in soil, PN, and PG sterilized by autoclaving (120 • C for 2 h), sieved (2 mm mesh), mixed, and stored at 4 • C until use [37]; furthermore, for all tests, the bacterial isolates were pre-cultivated with physiological water at 30 • C, for 24 h in an orbital shaker-incubator (180 rpm) [38].…”

Section: Experimental Design and Treatmentsmentioning

confidence: 99%

Co-Inoculation with Phosphate-Solubilizing Microorganisms of Rock Phosphate and Phosphogypsum and Their Effect on Growth Promotion and Nutrient Uptake by Ryegrass

Amri

Mateus

Gatrouni³

et al. 2022

Applied Biosciences

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In the previous half-century, natural rock phosphates (PN) have been a valuable alternative for phosphorus (P) fertilizer for sustainable agriculture; furthermore, phosphogypsum (PG) has been widely used as a soil amendment fertilizer since it improves some soil properties, increases crop yields, and represents an environmental concern that can make a good economic profit; this research aimed to study the effects of microbial consortia of phosphate-solubilizing microorganisms (PSM) on the solubilization of PN and PG in the soil, and their effects on promoting plant growth and nutrient assimilation using ryegrass as a plant model. Local supply of PG with Pseudomonas fluorescens (MW165744) significantly increases root proliferation and plant biomass dry weight compared to other isolates, as well as improves total P uptake, with a maximum value of 62.31 mg/pot. The opposite occurred in mixing inoculation with Pseudomonas fluorescens, Pantoea agglomerans (MW165752) and Stenotrophomonas maltophilia (MW221274), with a negligible total P assimilation of 5.39 mg/pot. Whereas the addition of Pseudomonas agglomerans with PG gave outstanding total P absorption of 57.05 mg/pot when compared with PN input of 38.06 mg/pot. Finally, the results prove that the co-inoculation of Pseudomonas fluorescens with PG could be a promising and alternative option to use it as a source of P fertilizer for plants and to maintain a high level of nutrients in the soil.

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Effect of sodium and nitrogen on yield function of irrigated maize in southern Portugal

Cited by 13 publications

References 37 publications

Effect of Fertilization and Irrigation on Plant Mass Accumulation and Maize Production (Zea mays)

Effect of Fertilization and Irrigation on Plant Mass Accumulation and Maize Production (Zea mays)

High nitrate supply reduces growth in maize, from cell to whole plant

Co-Inoculation with Phosphate-Solubilizing Microorganisms of Rock Phosphate and Phosphogypsum and Their Effect on Growth Promotion and Nutrient Uptake by Ryegrass

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