Planted legume fallows reduce weeds and increase soil N and P contents but not upland rice yields von Saito, K., Linquist, B., Johnson, D. E., Phengchanh, S., Shiraiwa, T., Horie, T.

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Weeds in slash-and-burn rice fields in northern Laos von RODER, W., PHENGCHANH, S., KEOBULAPHA, B.

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Dynamics of soil and vegetation during crop and fallow period in slash-and-burn fields of northern Laos von Roder, W., Phengchanh, S., Maniphone, S.

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Relationships between soil, fallow period, weeds and rice yield in slash-and-burn systems of Laos von Roder, W. (International Rice Research Inst., Manila (Philippines)), Phengchanh, S, Keoboulapha, B

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Chromolaena odorata in slash-and-burn rice systems of Northern Laos von RODER, W, PHENGCHANH, S, KEOBOUALAPHA, B, MANIPHONE, S

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Effect of residue management and fallow length on weeds and rice yield von RODER, W, KEOBOULAPHA, B, PHENGCHANH, S, PROT, J. C, MATIAS, D

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