Studies on the growth control and the nutritional diagnosis in rice plants. III. Growth diagnosis at the stage of spikelet initiation for nitrogen top dressing.

Matsuzaki, Akio; Kariya, Kunio; Machida, Hiroyasu; Tsunoda, Kosei; Nishikawa, Yoshikazu

doi:10.1626/jcs.51.325

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…During the cultivar’s dissemination throughout Japan, many cultivation techniques have been developed to prevent lodging, increase yield, and retain the high eating quality. These include transplanting of younger seedlings to increase the duration of the growing season (Horiguchi et al 1991 ); improving water management by allowing soil drying during growth to suppress excessive culm elongation; diagnosing growth problems using the culm length, leaf color, and culm number (Sasaki 1985 , Ichimaru and Kanayama 1989 ); splitting the application of fertilizer during the reproductive stage (Matsuzaki et al 1982 , Ikeda and Kasai 1986 , Sasaki 1985 ); and using growth regulators (Hashizume and Yamagishi 1969 ). As a result, the paddy yield of Koshihikari increased to 6630 kg/ha by 1985 in the Hokuriku region.…”

Section: Reviewmentioning

confidence: 99%

Koshihikari: a premium short-grain rice cultivar – its expansion and breeding in Japan

Kobayashi¹,

Hori

Yamamoto

et al. 2018

Rice

127

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Koshihikari, a Japanese short-grain rice cultivar, was developed in 1956, more than 60 years ago. Despite its age, it has been the most widely grown cultivar in Japan for more than 35 years, making it the most important rice for the Japanese people. In its early days, there was no reason to predict that Koshihikari would become so widely disseminated. However, since the end of the post–World War II food shortage in the 1960s, Japanese preferences changed from high productivity to good eating quality. This triggered wide expansion of Koshihikari cultivation due to the cultivar’s excellent taste and texture. With increasing cultivation of Koshihikari in Japan, several good agronomic characteristics beyond its high eating quality became apparent, such as its good adaptation to different environments, tolerance to pre-harvest sprouting, and cold tolerance during the booting stage. These characteristics outweigh drawbacks such as its low blast resistance and low lodging resistance. The popularity of Koshihikari influenced subsequent rice breeding trends at regional agricultural experimental stations, and the characteristics of newly developed rice cultivars in Japan are usually rated relative to Koshihikari, which is used as the benchmark. Koshihikari was the first japonica rice cultivar whose whole genome has been sequenced by means of next-generation sequencing. Furthermore, comparison of the genomes of Koshihikari and Nipponbare has provided detailed insights into the genetic diversity of Japanese rice cultivars relative to that in rice populations elsewhere in the world. Further progress in rice genomics is gradually unlocking the mechanisms that underlie the agronomic characteristics of Koshihikari. To support both research and the development of novel rice cultivars, a series of isogenic and near-isogenic lines in the Koshihikari genetic background have been continuously developed. These new findings and materials will facilitate genomics-assisted rice breeding, eventually leading to superior cultivars.Electronic supplementary materialThe online version of this article (10.1186/s12284-018-0207-4) contains supplementary material, which is available to authorized users.

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Section: Reviewmentioning

confidence: 99%

Koshihikari: a premium short-grain rice cultivar – its expansion and breeding in Japan

Kobayashi¹,

Hori

Yamamoto

et al. 2018

Rice

127

View full text Add to dashboard Cite

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Field-specific variable rate fertilizer application based on rice growth diagnosis and soil testing for high quality rice production

Lee

Abawi

Kang

et al. 2011

J. Crop Sci. Biotechnol.

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This study was carried out to verify the applicability of variable rate fertilization (VRF) based on soil testing and diagnosis of rice plant growth for high quality rice production of var. Chucheongbyeo at the farm level. The field trials were conducted at Icheon in Gyeonggi province on a 10 ha farm consisting of 45 experimental fields. For comparative study, 15 field trials were carried out adopting fertilizer management (FPM) practices currently used by farmers. FPM fields were managed by each rice grower using current cultivation methods, but in each VRF field fertilizer application was prescribed using soil test results and the amount of N fertilizer for top-dressing at panicle initiation stage was calculated using rice growth value at that stage. In VRF fields, the total amount of N fertilizer application was less (72 kg ha -1 ) than that in FPM fields (103 kg ha -1 ). However, the amount of K2O fertilizer application was more in VRF fields (60 kg ha -1 ) than that in FPM fields (52 kg ha -1 ). The amount of P 2 O 5 fertilizer application was similar between the VRF and FPM fields. Plant height was significantly shorter and the number of tillers was significantly more at VRF fields than at the FPM fields. Coefficient of variation (CV) of each growth characteristic measured in VRF was lower than that of FPM fields at panicle initiation stage. There was no difference in culm and panicle length and panicle number between them at the grain filling stage, but CV of panicle numbers per m 2 decreased in VRF compared with that of the FPM fields. Rice yield was not different between VRF and FPM fields despite higher brown rice recovery and 1,000-grain weight in VRF fields. Under VRF management, head rice yield increased due to an increase in head rice ratio accompanied by a reduction in brown rice protein content and variation of quality characteristics. These results suggest that VRF application based on soil tests and measurement of rice growth value at panicle initiation stage has the potential for quality control and production of high quality rice through increasing uniformity of growth and reducing the variability in quality among individual fields.

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Persistence of Metarhizium anisopliae(Deuteromycotina:Hyphomycetes)as a Control Agent of Anomala cuprea(Coleoptera:Scarabaeidae)in a Forestry Nursery

Shimazu¹,

Mitsuhashi²,

Hashimoto³

et al. 1993

Appl. Entomol. Zool.

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Studies on the growth control and the nutritional diagnosis in rice plants. III. Growth diagnosis at the stage of spikelet initiation for nitrogen top dressing.

Cited by 5 publications

References 4 publications

Koshihikari: a premium short-grain rice cultivar – its expansion and breeding in Japan

Koshihikari: a premium short-grain rice cultivar – its expansion and breeding in Japan

Field-specific variable rate fertilizer application based on rice growth diagnosis and soil testing for high quality rice production

Persistence of Metarhizium anisopliae(Deuteromycotina:Hyphomycetes)as a Control Agent of Anomala cuprea(Coleoptera:Scarabaeidae)in a Forestry Nursery

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