Effect of root residues on the growth of upland rice

Nishio, Mayuko; Kusano, Shigeru

doi:10.1080/00380768.1975.10432654

Cited by 16 publications

(12 citation statements)

References 3 publications

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“…The same observation was made by NISHIO and KUSANO in Japan (8). In a rice-based system, the practice of keeping the soil flooded during the wet season and then planting it to the susceptible crop once during the dry season would not therefore create a problem of growth inhibitory effects.…”

Section: Discussionmentioning

confidence: 59%

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Growth inhibition due to continuous cropping of dryland rice and other crops

Ventura

Watanabe

1978

Soil Science and Plant Nutrition

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Section: Discussionmentioning

confidence: 59%

“…But growing a crop continuously on the same piece of land may lead to some injurious soil effects. Inhibition in the growth of dryland rice when grown annually is well known in Japan (7,8). In the Philippines there is no clear evidence of harmful effects from its continuous cropping.…”

mentioning

confidence: 99%

Growth inhibition due to continuous cropping of dryland rice and other crops

Ventura

Watanabe

1978

Soil Science and Plant Nutrition

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“…However, since continuous cropping was reported to injure upland rice in Japan, aerobic rice may not be suitable to continuous cropping. Nishio and Kusano [41] [42] indicated that fungi are one of the major causes of plant injury in Japan.…”

Section: Discussionmentioning

confidence: 99%

Adaptability of High-Yielding Rice Cultivars in Relation to Biomass Productivity under Moderately Water Stressed Upland Conditions

Hyoda¹,

Homma²,

Shiraiwa³

et al. 2015

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Recent studies have focused on the improvement of rice productivity under aerobic conditions for times when water resources and food production are limited. This study aimed to evaluate the adaptability of high-yielding rice cultivars to moderately water-stressed upland conditions in order to contribute breeding. A three-year field experiment in the temperate climate of Kyoto, Japan, indicated that the decrease in yield was mainly derived from a decrease in above-ground total dry matter (TDM) rather than a decrease in harvest index (HI). Although the decrease in TDM was mostly caused by a decrease in radiation use efficiency (RUE), we determined that the key to adapting high-yielding cultivars to upland conditions is intercepted radiation per day (IRPD), governed by leaf area index (LAI). Although the effect was not robust, LAI growth under upland conditions was associated with root length density. RUE was dependent on leaf water potential (LWP), indicating that a plant's ability to maintain LWP under water-stressed conditions is important. The results also suggest the necessity of a canopy analyzer to evaluate LAI, as well as an infrared radiation thermometer to evaluate RUE. Performing such measurements during breeding efforts allows us to select for genotypes that are suitable for less stressed aerobic conditions.

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“…The causes of yield decline in the continuous aerobic rice system remain unclear. It could be related to the build-up of nematodes and soil pathogens under aerobic conditions (Ventura et al 1981), changes in soil mineral nutrients (Lin et al 2005) or growth inhibition by toxic substances from root residues (Nishio and Kusano 1975). Crop management strategies to mitigate or prevent the yield decline of continuous aerobic rice can only be developed when the causes of yield decline are clearly identified.…”

Section: Genotypic Variation In Response To Water Regimesmentioning

confidence: 99%

Prospects for Genetic Improvement to Increase Lowland Rice Yields with Less Water and Nitrogen

Peng¹,

Bouman²

Scale and Complexity in Plant Systems Research

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Abstract. Increasing yield potential of lowland rice remains to be the top priority in rice geneticimprovement programmes, because rice farmers' primary concern is still grain yield and world rice production has to increase by 1% annually in the next 20 years to meet the demand of the growing population. Improvements in yield potential of irrigated lowland rice were achieved under ample supply of water and nutrients. Water use efficiency (WUE) and nitrogen use efficiency (NUE) were seldom included in the breeding objectives for irrigated lowland rice. Scarcity of freshwater resources has threatened the production of the flood-irrigated rice crop, and excessive use of N fertilizer is causing environmental concerns. We have to increase lowland rice yield with less water and N. Newly developed crop management strategies have proven to be effective in increasing WUE and NUE. Several watersaving technologies such as alternate wetting and drying (AWD) and aerobic rice system have been developed to increase the water productivity of rice. However, yield penalty occurred when these watersaving technologies were practised with current varieties. New varieties have to be developed to reduce the yield loss under AWD and aerobic rice system in order to increase WUE further. Direct selection for WUE under flood-irrigated lowland conditions may have a negative impact on grain yield under watersaving strategies. Optimizing the timing and rate of N application to synchronize supply and demand of N by the crop has resulted in a great reduction in fertilizer-N input without yield loss and greater NUE. Genetic improvement of NUE has not been achieved in rice. Genotypic variation in NUE has been reported in many studies. Plant traits that are associated with high grain yield and high NUE should be identified so that breeders are able to use these traits easily as selection criteria in the breeding programme to develop N-efficient varieties without sacrificing rice yield potential. New breeding techniques such as development of F 1 hybrids, marker-aided selection, transformation and genetic engineering should be combined effectively with the empirical breeding method in order to increase rice grain yield with less water and N.

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Effect of root residues on the growth of upland rice

Cited by 16 publications

References 3 publications

Growth inhibition due to continuous cropping of dryland rice and other crops

Growth inhibition due to continuous cropping of dryland rice and other crops

Adaptability of High-Yielding Rice Cultivars in Relation to Biomass Productivity under Moderately Water Stressed Upland Conditions

Prospects for Genetic Improvement to Increase Lowland Rice Yields with Less Water and Nitrogen

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