Research Article Simulation of wheat yield by nitrogen and ear components in harvest prediction analysis

Alessi, Odenis; Silva, J.A.G. Da; Pansera, Vanessa; Rosa, Juliana Aozane Da; Carvalho, I.R.; Lautenchleger, Francine; Jung, M.S.; Colet, de F.; Teixeira, Carolina; Basso, Natiane Carolina Ferrari; Tisott, J.V.; Babeski, Cristhian Milbradt

doi:10.4238/gmr18943

Cited by 2 publications

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“…Applications of tebuconazole fungicide at a dose of 0.75 L ha -1 and weed control with metsulfuron-methyl herbicide at a dose of 4 g ha -1 were carried out. The wheat cultivar BRS Guamirim was used, small, early cycle, resistant to lodging, commercial class "bread" type and with high production potential, representing the standard biotype desired by wheat growers in southern Brazil (Alessi et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

Research Article Dose and form of nitrogen supply in the relationship dynamics of wheat ear components with yield in cropping systems

Pansera,

Da Silva,

Alessi

et al. 2022

Genet. Mol. Res.

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Nitrogen management distinctly influences the expression and magnitude of relationships between wheat ear components and grain yield. We sought to determine the variables linked to wheat ear that are more responsive to changes in the dose and form of nitrogen supply and to determine the direct and indirect effects on grain yield by single and fractional nitrogen supply in soybean/wheat and corn/wheat succession systems. The study was conducted in 2018 and 2019 in a randomized block experimental design with four replications, in a 3 x 3 factorial, for N-fertilizer doses (30, 60, 120 kg ha-1) and forms of supply [single dose (100 %) in phenological stage V 3 (third expanded leaf); fractionated dose (70% and 30%) at the V 3 /V 6 phenological stage (third and sixth expanded leaf) and; fractionated dose (70% and 30%) at phenological stage V 3 /R 1 (expanded third leaf and beginning of grain filling)], respectively, in the soybean/wheat and corn/wheat succession systems. The increase in the nitrogen doses promotes productivity due to the greater contribution of grain mass and ear length in the V 3 stage and ear grain mass in V 3 /V 6 and V 3 /R 1, in a soybean/wheat system. In the corn/wheat system, the increase in nitrogen promotes productivity, with a greater contribution of grain ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 21 (1): gmr19008 V. Pansera et al. 2 mass in the ear, regardless of the form of supply. Nitrogen supply in single dose (V 3) and fractionated in theV 3 /V 6 gave similar productivity, with a reduction in V 3 /R 1. The grain mass of the ear showed greater contribution of alteration by the form of single and fractioned nitrogen supply, regardless of the dose and succession system. The grain mass of the ear shows a high correlation with yield, regardless of the dose and form of nitrogen supply in the soybean/wheat system, with a positive indirect effect by the ear mass. In the corn/wheat system, ear grain mass shows a high correlation with yield, when nitrogen is supplied in a single dose at 30 and 60 kg ha -1 , with a positive indirect effect due to ear length.

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Section: Methodsmentioning

confidence: 99%

Research Article Dose and form of nitrogen supply in the relationship dynamics of wheat ear components with yield in cropping systems

Pansera,

Da Silva,

Alessi

et al. 2022

Genet. Mol. Res.

Self Cite

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Densidade De Sementes E Aplicação Foliar De Fertilizante Organomineral À Base De Cálcio E Potássio Na Cultura Da Aveia

Coppetti,

Da Silva,

Carvalho

et al. 2024

RGSA

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Purpose: To present the benefits of increasing oat sowing density on productivity, uniformity, soil quality and reduction of pesticides and the use of an organomineral product based on calcium and potassium as an alternative to lodging control, promoting more sustainable cultivation systems. Theoretical framework: Increasing plant density can promote productivity, rapid soil coverage, reduction of weeds and greater harvest uniformity, reducing the use of pesticides. However, increasing seeding density can promote lodging. Lodging is the phenomenon in which plants leave the vertical position and fall to the ground, affecting the quality of the grains. The commercial product registered to control lodging is highly toxic to the environment. Organomineral sources with potassium and calcium represent an alternative for controlling lodging with reduced environmental impacts. Results: Benefits of increased seeding density to promote grain yield have been found for several crop species, reinforcing the need for adapting seeding density for oat crops. The use trinexapac-ethyl as a growth regulator, it poses risks of phytotoxicity and environmental contamination. In this context, several studies have indicated that potassium and calcium favor cell wall rigidity, potentially contributing to oat stem strength. Originality/value: This study provides significant contribution to the advancement of research on oat in Brazil, bringing new information benefiting farmers, technical assistance agents, and the food industry and improving the production system to ensure food security and care for the environment.

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Research Article Simulation of wheat yield by nitrogen and ear components in harvest prediction analysis

Cited by 2 publications

References 0 publications

Research Article Dose and form of nitrogen supply in the relationship dynamics of wheat ear components with yield in cropping systems

Research Article Dose and form of nitrogen supply in the relationship dynamics of wheat ear components with yield in cropping systems

Densidade De Sementes E Aplicação Foliar De Fertilizante Organomineral À Base De Cálcio E Potássio Na Cultura Da Aveia

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