Stylosanthes guianensis as a short-term fallow crop for improving upland rice productivity in northern Laos

Saito, Kazuki; Linquist, Bruce A.; Keobualapha, B.; Phanthaboon, K.; Shiraiwa, Tatsuhiko; Horie, Takeshi

doi:10.1016/j.fcr.2005.09.005

Cited by 22 publications

(19 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Nevertheless, soil conditions and weed growth were highly heterogeneous as seen by the high coefficient of variation (Tables 3-7). These results are consistent with previous studies in upland fields in northern Laos (Roder 2001;Saito et al 2006bSaito et al , 2007). An efficient approach to replace the native fallow vegetation with N-fixing legumes is to establish the legumes during the rice growing season and then allow the legumes to grow during the subsequent fallow period.…”

Section: Discussionsupporting

confidence: 95%

“…Similarly, Roder and Maniphone (1998) found that increased fallow biomass resulted in less total weed biomass during the subsequent rice Values in a column followed by the same letter are not significantly different at 5% level based on mean separation by LSD growing season. Saito et al (2006b) Planted fallow systems increased inorganic soil N because of higher biomass (Fig. 3).…”

Section: Discussionmentioning

confidence: 97%

See 1 more Smart Citation

Planted legume fallows reduce weeds and increase soil N and P contents but not upland rice yields

Saito

Johnson

Phengchanh³

et al. 2008

Agroforest Syst

Self Cite

View full text Add to dashboard Cite

Shortened fallows have resulted in declining upland rice yields in slash-and-burn upland rice systems in northern Laos. We studied the benefit of planted legume fallows for rice productivity, weeds, and soil nitrogen and phosphorus availability. Four systems were evaluated over a 5-year period: 1-year fallow with native species, 1-year Cajanus cajan fallow, 1-year Leucaena leucocephala fallow, and continuous annual rice cropping. Rice was grown either once each year as continuous annual cropping or in alternate years of 2001, 2003, and 2005. C. cajan and L. leucocephala were sown with rice during the 2001 growing season. In subsequent years, L. leucocephala regenerated from root stock and did not have to be resown, whereas C. cajan was resown in 2003. Establishment of either C. cajan or L. leucocephala had no significant effect on rice yield in 2001, and rice yields ranged from 2.0 to 2.3 t/ha. Rice yields declined rapidly in succeeding years, and rice yields in the four systems ranged from 0.7 to 1.1 t/ha in 2003 and from 0.3 to 0.5 t/ha in 2005. Although two planted fallow systems increased nitrogen input because of greater biomass accumulation in 2003 and 2005 and soil phosphorus availability was higher following L. leucocephala fallow in 2005, there were no significant differences in rice yields among the four systems in either year. Weed biomass during the rice growing season increased each year in all systems and increased more rapidly for continuous annual rice cropping, in which the dominant weed species was Ageratum conyzoides L. Among the other three systems, there were no significant differences in the weed biomass in 2003 and 2005. We conclude that C. cajan and L. leucocephala as 1-year fallows do not offset the negative effects of increased cropping intensity on rice yield in this region.

show abstract

Section: Discussionsupporting

confidence: 95%

Section: Discussionmentioning

confidence: 97%

Planted legume fallows reduce weeds and increase soil N and P contents but not upland rice yields

Saito

Johnson

Phengchanh³

et al. 2008

Agroforest Syst

Self Cite

View full text Add to dashboard Cite

show abstract

“…Stylosanthes guianensis were proposed as leguminous pasture crops in Thailand (Guodao et al, 1997) and as fallow crops in Lao PDR (Roder and Maniphone, 1995;Saito et al, 2006). The present results show that stylo can be produced in paddy fi elds during the dry season in Northeast Thailand in rice-stylo relay-intercropping.…”

Section: Discussionsupporting

confidence: 52%

Relay-Intercropping of Stylosanthes guianensis in Rainfed Lowland Rice Ecosystem in Northeast Thailand

Homma

Mochizuki

Watatsu

et al. 2008

Plant Production Science

View full text Add to dashboard Cite

“…To overcome such constraints, relay or intercropping of cereals and legumes has been recommended by previous studies (Reddy and Willey, 1981;Saito et al, 2006). We examined the capacity of the rice-stylo (Stylosanthes guianensis) relay-intercropping system to increase agricultural productivity in a rain-fed lowland rice ecosystem in Northeast Thailand ( Fig.…”

mentioning

confidence: 99%

“…1; Homma et al, 2008). Stylo is a tropical leguminous forage crop, fallow crop or green manure crop (Becker and Johnson, 1998;Saito et al, 2006). In the relay-intercropping system that we examined, stylo was grown by utilizing residual water and nutrients from rice cropping under non-irrigated and non-fertilized conditions during the dry season, when other crops were not cultivated.…”

mentioning

confidence: 99%

Nutrient Deficiency in the Rice-Stylo (Stylosanthes guianensis) Relay-Intercropping System in Rainfed Lowland Rice Ecosystem in Northeast Thailand

Homma

Mochizuki

Horie

et al. 2009

Plant Production Science

View full text Add to dashboard Cite

Stylosanthes guianensis as a short-term fallow crop for improving upland rice productivity in northern Laos

Cited by 22 publications

References 15 publications

Planted legume fallows reduce weeds and increase soil N and P contents but not upland rice yields

Planted legume fallows reduce weeds and increase soil N and P contents but not upland rice yields

Relay-Intercropping of Stylosanthes guianensis in Rainfed Lowland Rice Ecosystem in Northeast Thailand

Nutrient Deficiency in the Rice-Stylo (Stylosanthes guianensis) Relay-Intercropping System in Rainfed Lowland Rice Ecosystem in Northeast Thailand

Contact Info

Product

Resources

About