Soybean Seed Production and Nitrogen Nutrition

Ohyama, Takuji; Minagawa, Ritsuko; Ishikawa, Satoshi; Yamamoto, Misaki; Hùng, Nguyễn Văn; Ohtake, Norikuni; Sueyoshi, Kuni; Sato, Takashi; Nagumo, Yoshifumi

doi:10.5772/52287

Cited by 39 publications

(51 citation statements)

References 64 publications

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“…Average plant height for both years varied from 110.3 cm to 117.3 cm (Table 1). Similar results were observed by various researchers (Ablett et al, 1984;De Bruni&Pedersen, 2008;Cox & Cherney, 2011;Akond et al, 2013, Chauhan & Opena, 2013Ohyama et al, 2013).…”

Section: Plant Height and Lowest Pod Heightsupporting

confidence: 80%

“…The highest and the lowest harvesting index (46.34 and 39.47% respectively) was observed at 70cm x 10cm and 70cm x 4cm spacing respectively. The competition among the plants for absorption of nutrient and photosynthesis become severe and inhibit production and partitioning of food materials resulting tall, thin and slender stems under high planting density (Ohyama et al, 2013). For this reason, the harvest index significantly decreased with reducing plant density.…”

Section: Harvest Index and Biomass Weightmentioning

confidence: 99%

“…The number of pods plant -1 is one of the most important yield contributing traits which changes in the response of plant density (Zaimoglu et al, 2004). According to Ohyama et al (2013) soybean productivity mainly depends on the number of pods plant -1 and it was reported higher in low density which resulted in the enhanced in branching of plant -1…”

Section: Branch Number and Pods Numbermentioning

confidence: 99%

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Soybean managıng for maxımıze productıon: plant populatıon densıty effects on seed yıeld and some agronomıcal traıts ın maın cropped soybean productıon

Güllüoğlu¹,

Bakal²,

Sabagh³

et al. 2017

JEBAS

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Plant density is an essential agronomic practice and affects the productivity of crops. Hence, the optimum plant density to achieve the maximum productivity may vary from crop to crop, genotype to genotype and location to location. Therefore, the current research has been carried out for two consecutive seasons of 2013 and 2014 at the research station of Cukurova University and, the aim of the study was to determine the effect of plant density on seed yield and some agronomical traits in main cropped soybean production. Results of study revealed that seed yield of soybean depends on plant density and highest seed yield (5820.8 kg ha -1 ) was obtained from the 70 cm x 4 cm spacing, while the lowest mean values (3804.5 kg ha -1

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Section: Plant Height and Lowest Pod Heightsupporting

confidence: 80%

Section: Harvest Index and Biomass Weightmentioning

confidence: 99%

Section: Branch Number and Pods Numbermentioning

confidence: 99%

See 1 more Smart Citation

Soybean managıng for maxımıze productıon: plant populatıon densıty effects on seed yıeld and some agronomıcal traıts ın maın cropped soybean productıon

Güllüoğlu¹,

Bakal²,

Sabagh³

et al. 2017

JEBAS

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show abstract

“…Herridge et al [36,37] developed the "relative ureide method" for evaluating the % Ndfa (percentage of nitrogen derived from atmospheric dinitrogen) by analyzing the concentrations of nitrogen compounds in xylem sap obtained from bleeding sap of a cut stump or by vacuum collection from stems. The concentrations of ureide-N, nitrate-N, and α-amino-N can be determined by colorimetry [38].…”

Section: Field Assessment Of Nitrogen Fixation and Nitrogen Absorptiomentioning

confidence: 99%

“…It is necessary to use both N 2 fixation by root nodules and absorbed N from roots for the maximum seed yield of soybean [26,27]. Sole Comparison of the nitrogen assimilation patterns coming from seed N + starter N, soil N, and N 2 fixation between low-yield and high-yield model [38].…”

Section: Soybean -The Basis Of Yield Biomass and Productivitymentioning

confidence: 99%

Role of Nitrogen on Growth and Seed Yield of Soybean and a New Fertilization Technique to Promote Nitrogen Fixation and Seed Yield

Ohyama¹,

Tewari²,

Ishikawa³

et al. 2017

Soybean - The Basis of Yield, Biomass and Productivity

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Soybean is an important crop for human food and feed for livestock. World soybean production is increasing especially in North and South America. Soybean seeds contain a high percentage of protein about 35-40%, and they require a large amount of nitrogen compared with other crops. Soybean plants make root nodules with rhizobia, and rhizobia can fix atmospheric N 2 and give the fixed N to the host soybean plants. Also, soybean can absorb nitrogen usually nitrate from soil or fertilizers. The amount of total assimilated nitrogen in shoot is proportional to the soybean seed yield either from nitrogen fixation or from nitrogen absorption, and the nitrogen availability is very important for soybean cultivation. Maintenance of a high and long-term nitrogen fixation activity is very important for a high production of soybean. However, application of chemical nitrogen fertilizers usually depresses nodule formation and nitrogen fixation. Nitrate in direct contact with a nodulated part of roots causes severe inhibition of nodule growth and nitrogen fixation, although a distant part of nodules from nitrate application gives no or little effect. Deep placement of slow-release nitrogen fertilizers, coated urea, or lime nitrogen promoted the growth and seed yield and quality of soybean without depressing nitrogen fixation.

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Nitrogen Fertilizer Recovery and Partitioning Related to Soybean Yield

Pierozan

Favarin

Lago

et al. 2020

J Soil Sci Plant Nutr

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This study checked the nitrogen (N) uptake, fate of the N fertilizer, fertilizer recovery efficiency (FRE) and the residual amount of N fertilizer in the soil via 15 N-labelled fertilizer applied to soybean (Glycine max L. Merr.), to explain any differences in the yields. Two soybean field experiments were established in Brazil, one conducted in a tropical (Trop) zone located at Cerrado Biome and the other in a subtropical (Subt) environment. The experimental design was a 2-factor in randomized complete block with four replications. Five doses of N (0, 20, 40, 80 and 120 kg ha −1) were applied at two soybean growth stages (VE and R3). For all treatments, except No-N, 15 N-labelled fertilizer was used. The N uptake and the amount of N fertilizer were analysed in the roots, shoots, grains and whole plant, the FRE and yield by soybean, and the residual of fertilizer in the soil. The total N uptake (Nplant) was greater with fertilization at R3 stage compared to the other stage, and N application increased the yield just at this stage and in the Trop condition. The increase in N shoot (not specifically from fertilizer) with the application at R3 appeared to be related to the increased in yield. However, the N from fertilizer found in the plant shoot was about 20% higher when fertilizer was applied at VE compared with R3. Under Subt condition, the FRE averaging 55%. In contrast, the FRE decreased from low to high nitrogen rates (64 to 40%, respectively) when soybean grown under Trop condition. Most N from fertilizer (38%) was found in the grains, followed by the shoot (14.6%) and the root (0.58%). The use of N fertilizer at reproductive growth stages is a better approach to meet soybean N demand through N fertilization. Potential yield gains are more reliable under Trop condition.

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Soybean Seed Production and Nitrogen Nutrition

Cited by 39 publications

References 64 publications

Soybean managıng for maxımıze productıon: plant populatıon densıty effects on seed yıeld and some agronomıcal traıts ın maın cropped soybean productıon

Soybean managıng for maxımıze productıon: plant populatıon densıty effects on seed yıeld and some agronomıcal traıts ın maın cropped soybean productıon

Role of Nitrogen on Growth and Seed Yield of Soybean and a New Fertilization Technique to Promote Nitrogen Fixation and Seed Yield

Nitrogen Fertilizer Recovery and Partitioning Related to Soybean Yield

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