N2 fixation in Thai soybeans: Effect of tillage and inoculation on15N-determined N2 fixation in recommended cultivars and advanced breeding lines

Rennie, R. J.; Rennie, D. A.; Siripaibool, C.; Chaiwanakupt, P.; Boonkerd, Nantakorn; Snitwongse, P.

doi:10.1007/bf02139994

Cited by 42 publications

(22 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Maximum biological N 2 fixation of 450 kg N ha -1 was reported by Rennie et al (1988), but a more realistic estimate of 337 kg N ha -1 was reported by Herridge (1982). Salvagiotti et al (2008) and Mastrodomenico and Purcell (2012) found that N 2 fixation could supply up to 86 and 90% of the total N uptake requirement, respectively.…”

Section: Nitrogen Uptakementioning

confidence: 97%

Dry Matter and Nitrogen Uptake, Partitioning, and Removal across a Wide Range of Soybean Seed Yield Levels

Gaspar

Laboski²,

Naeve

et al. 2017

Crop Science

View full text Add to dashboard Cite

Soybean [Glycine max (L.) Merr.] growers are concerned that soybean yield is restricted by limitations on biological N2 fixation and soil nitrogen (N) mineralization. However, a comprehensive study characterizing actual soybean N requirements across wide‐ranging seed yield environments is nonexistent for modern soybean production systems. Using six site‐years and eight soybean varieties, plants were sampled at six growth stages and partitioned into their respective plant parts and analyzed. For each kilogram increase in yield, total dry matter accumulation, harvest index, and total N uptake increased by 1.45 kg, 0.0034%, and 0.054 kg, respectively, but all varied by environment at any specific yield level, whereas N removal did not (0.055 kg N kg−1 grain). Nitrogen harvest index (NHI) increased (0.0019–0.004% kg−1 grain) with yield but varied by environment and yield level, resulting in indices between 73 and 90%. Peak uptake rates for N were 3.6 to 4.3 kg ha−1 d−1 between R4 and R5, depending on the yield level. After R5.5, 66 to 69% of vegetative N was remobilized to the seed, which accounted for 50.4% of seed N at the low yield level (3608 kg ha−1), but only 38.9% at the high yield level (5483 kg ha−1). Moreover, higher yields attained a greater portion of their total N uptake after R5.5 (40.1%) compared with the low yield level (29.7%). These results highlight greater remobilization efficiencies and late‐season N uptake in conjunction with greater NHI to support higher yields per unit of N uptake in current production realities.

show abstract

Section: Nitrogen Uptakementioning

confidence: 97%

Dry Matter and Nitrogen Uptake, Partitioning, and Removal across a Wide Range of Soybean Seed Yield Levels

Gaspar

Laboski²,

Naeve

et al. 2017

Crop Science

View full text Add to dashboard Cite

show abstract

“…We suggested, based on our results, that the difference in seed yield of these two cultivars could be due to the lower ability of the SJ4 cultivar than CM60 to translocate accumulated N into seeds. Our assumption was supported by a field experiment conducted by Rennie et al (1988) who concluded that although in Thai soybeans (SJ series, SJl, 2, 4, and 5) the amount of N:! fixation was similar to that recorded in other parts of the world (~100 kg N ha -I), in some of them (SJ series) the beneficial effect of this accumulated N on high seed yield was not comparable to that observed in temperate soybean cultivars, which are characterized by a high seed yield.…”

Section: Discussionmentioning

confidence: 56%

Symbiotic efficiency and compatibility of native rhizobia in northern Thailand with different soybean cultivars

Shutsrirung

Sutigoolabud²,

Santasup

et al. 2002

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

Symbiotic efficiencies and compatibilities between native rhizobia and 17 soybean cultivars including Asian and US ones were investigated in a farmer field in a traditional soybeangrowing area of northern Thailand where inoculation had never been practiced. The field is representative of the soybean cultivation area in the cool-dry season with irrigated lowland rice-based system in the upper northern region. Nodule dry weight of the tested soybean cultivars revealed good nodulation ability of the native rhizobia with both Asian and US soybean cultivars. This result indicates the presence of a wide genetic host range of the native rhizobial populations in this soybean-growing area. Relative ureide index, nitrogenfixing efficiency and seed yield of the tested soybean cultivars indicated that on the average, "Asian-type" soybeans exhibited a higher symbiotic performance than the "US-type" soybeans with the native rhizobia. Among all the tested soybean cultivars, Dempo, a local Indonesian cultivar, produced maximum seed yield (1.8 t ha-1 ). Among the tested US cultivars, Bossier showed the highest symbiotic performance in terms of nodule dry weight, shoot dry weight and total nitrogen accumulation. However, the highest seed yield was found in another US soybean cultivar, Valder. This was probably due to the new development of high nodulation at later growth stages, i.e. the pod-filling stage. 'I\vo Thai breeding cultivars, CM60 and CMUOOI derived from US cultivars, produced a higher seed yield (1.5 and 1.8 t ha-l, respectively) than their parent cultivars, Williams and Pakchong (0.9 and 1.1 t ha-1 , respectively). Due to the high effectiveness of the native rhizobial populations, inoculation may not be necessary for many soybean cultivars grown in this area. However, it appeared that the symbiotic efficiency depended largely on the soybean cultivars. Therefore, when new breeding cultivars are released, the symbiotic performance of these new cultivars with the native rhizobia should be assessed.Key Words: compatibility, native rhizobia, northern Thailand, symbiotic efficiency, soybean cultivars.upland rainfed system in the lower northern region. 491 Northern Thailand has a long history of soybean cultivation. Over 80% of soybean production is derived from Chiang Mai and Mae Hong Son Provinces which are representative of the soybean cultivation area in the cool-dry season (December-April) with irrigated lowland rice-based system in the upper northern region, and Sukhothai and Uttradit Provinces which are representative of the cultivation area in the rainy season withThe domestic consumption of soybean in Thailand for food processing, animal feed and seed materials is very high and increased by more than five fold during the last decade. Because of this high consumption, the amount of soybean production does not meet the domestic demand and large amounts of soybean seeds are imported every year. Seed yield of local varieties such as Black soybean is usually not very high. The yield of recommended and adapted cultiva...

show abstract

“…In calculating the contribution of Nzfixation to plant N in this way, we found that the Ndfa calculated by the difference method gave higher values for N2fixed for the seed N at Khon Kaen (range 56.2% to 77.2% of seed N) than the N-15 dilution method. The difference method estimated levels of N, fixed for inoculated Tainan 9 in excess of 130 kg Nha, which is greater than observed for soybeans grown in this area (15). The difference method also estimated lower amounts of N, fixed for stover N at both sites (range 21.2% to 60.4% of stover N at Khon Kaen, 11.1% to 49.2% of stover N at Tha Phra).…”

Section: )mentioning

confidence: 65%

“…The N fertilizer was added adjacent to the plant roots at 10 cm depth in the soil in a dissolved form (10 mL soln./hill) using a 50-mL syringe equipped with a modified 18-gauge needle which had holes on the sides rather than the tip to prevent soil clogging the opening. This method of labelling the soil was shown to be effective for N-15 isotope dilution studies on soybeans in these soils (9,15).…”

Section: Methodsmentioning

confidence: 99%

Peanut Cultivar Responses to Bradyrhizobium Inoculation in Northeast Thailand

Kucey

Toomsan

1988

Peanut Science

View full text Add to dashboard Cite

Effective combinations of peanut (Arachis hypogaea L.) cultivars and Bradyrhizobiurn strains were determined under field conditions in NE Thailand in experiments conducted in 1985 and 1986. The experiments measured yields and N, fixation (N-15 dilution) responses of peanut cultivars Tainan 9, Moket and KAC431 to inoculation with inoculants composed of Bradyrhizobiurn strains TH205, 32HI or NC92 or mixed cultures of bacteria. Midseason parameters of nodule number and weight and acetylene reduction levels were also determined. Peanut yields varied between years and locations. Cultivar Tainan 9 was shown to be the cultivar with the best average yield for the locations tested. Inoculation with bradyrhizobia resulted in increased seed yields and amounts of N in the plants in most cases. Inoculated peanuts received an average of 71 kg N/ha from fixation; uninoculated peanuts received an average of 62 kg N/ha. Of this N, 55 to 77% remained in the stover. Midseason measurements of plant performance were of minimal value for predicting the relative performance of the three cultivars.

show abstract

N2 fixation in Thai soybeans: Effect of tillage and inoculation on15N-determined N2 fixation in recommended cultivars and advanced breeding lines

Cited by 42 publications

References 17 publications

Dry Matter and Nitrogen Uptake, Partitioning, and Removal across a Wide Range of Soybean Seed Yield Levels

Dry Matter and Nitrogen Uptake, Partitioning, and Removal across a Wide Range of Soybean Seed Yield Levels

Symbiotic efficiency and compatibility of native rhizobia in northern Thailand with different soybean cultivars

Peanut Cultivar Responses to Bradyrhizobium Inoculation in Northeast Thailand

Contact Info

Product

Resources

About