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 AS  Vol.10 No.10 , October 2019
Maize Cannot Be Grown in Xiengkhouang Province?
Abstract: During a 2005 visit with National Agricultural and Forestry Institute (NAFRI) Director, Dr. Kouang Doungsila issued a challenge to these authors to determine if it was true that crops could not be grown in the extensive uplands of Xiengkhouang Province, Laos PDR. In response, a two-phase series of experiments was proposed and implemented. The Phase I experiment was to bring soil from the Xiengkhouang province uplands to a NAFRI greenhouse near Vientiane to assess possible nutrient requirements using a nutrient omission experiment. Simultaneously, soils were collected and analyzed from seven recognized agricultural regions of Laos. The initial Vientiane greenhouse experiment indicated that maize did grow, but there were multiple issues of extreme soil acidity and clear deficiencies of phosphorus and other nutrients. Phase II of the study included field studies on the site of soil selected for the greenhouse study. Field experiments were carried out for two years at the site with yields of maize exceeding 5500 kg⋅ha−1 in the first year and exceeding 6250 kg⋅ha−1 in a subsequent year. Intense symptoms of nutrient zinc (Zn) deficiency were observed, however. In 2008 another experiment was designed and carried out that included a Zn variable. The results from that experiment confirmed that maize yields nearing 6000 kg⋅ha−1 were indeed possible. Substantial amounts of lime were needed to correct the strong soil acidity, and a series of other nutrients including N, P, K, and Zn were also required. Ongoing issues are where to obtain the extensive amounts of limestone needed as well as an evaluation of the residual effect of the limestone The finely ground, very reactive burnt lime residual effect was, as expected, short-lived. The results clearly demonstrated that, indeed, it was possible for maize to be produced in the extensive uplands of Xiengkhouang province, in answer to Director Khouang’s challenging question.
Cite this paper: Souliyavongsa, X. , Sipaseuth, N. , Dounphady, K. , Attanandana, T. , Kanghae, P. , Yost, R. , Yampracha, S. and Kunaporn, S. (2019) Maize Cannot Be Grown in Xiengkhouang Province?. Agricultural Sciences, 10, 1359-1369. doi: 10.4236/as.2019.1010099.
References

[1]   World Food Programme (2019) Lao People’s Democratic Republic.
https://www.wfp.org/countries/lao-peoples-democratic-republic

[2]   Dounphady, K. (2009) Estimating Phosphorus Fertilizer Application Rates for Maize in Selected Soils of Laos. Kasetsart University, Bangkok, Thailand.

[3]   Vonghachack, S. (2000) Soil and Soil Fertility in Laos. Soil Survey and Land Classification Center, Vientiane, Laos.

[4]   Linquist, B. and Pheng, S. (2001) Nutrient Management in Rainfed Lowland Rice in the Lao PDR. International Rice Research Institute, Los Banos, Philippines, 88 p.

[5]   Linquist, B., Kazuki, S., Keoboualapha, B., Phengchan, S. and Phanthaboon, K. (2006) Improving Upland Rice-Based Cropping Systems in Laos. In: Schiller, J.M., Chanphengxay, M.B., Linquist, B. and Appa Rao, S., Eds., Rice in Laos, International Rice Research Institute, Los Banos.

[6]   Xaysathid, S., Yampracha, S., Attanandana, T., Yost, R. and Kanghae, P. (2015) Phosphorus-Sorption Characteristics and Phosphorus Buffer Coefficients of Some Important Soils in Lao PDR. Communications in Soil Science and Plant Analysis, 46, 666-681.
https://doi.org/10.1080/00103624.2015.1005225

[7]   Lienhard, P., Sosomphou, T., Siphongxay, S., Tivet, F. and Seguy, L. (2005) Improving Feed Resources for Animals in Small Holder Farming Systems, Xiengkhouang Province, Lao PDR. In: Tivet, F., Tran Quoc, H., Lienhard, P., Chabanne, A. and Panyasiri, K., Eds., Development and Implementation of Direct Seeding Mulch Based Cropping Systems in South-East Asia, Lao National Agro-Ecology Programme-PRONAE, PCADR.

[8]   Tivet, F., Tran Quoc, H., Lienhard, P., Chabanne, A. and Panyasiri, K. (2005) Development and Implementation of Direct Seeding Mulch Based Cropping Systems in South-East Asia. Lao National Agro-Ecology Programme-PRONAE, PCADR.

[9]   Sanchez, P.A. (2019) Properties and Management of Soils of the Tropics. 2nd Edition, Cambridge University Press, Cambridge, United Kingdom.

[10]   Kjeldahl, J.A. (1883) New Method for the Determination of Nitrogen in Organic Matter. Zeitschreft fur Analytische Chemie. In: Holcombe, E.E., Moore, D.G. and Fredriksen, R.L., Eds., An Improved Method of Chemical Analysis for Low Levels of Nitrogen in Forest Stream or in Rain Water, USDA. Forest Service.

[11]   Bray, R.H. and Kurtz, L.T. (1945) Determination of Total, Organic, and Available Forms of Phosphorus in Soils. Soil Science, 59, 39-45.
https://doi.org/10.1097/00010694-194501000-00006

[12]   Mehlich, A. (1953) Determination of P, Ca, Mg, K, Na and NH4. North Carolina Soil Test Division Mimeo.

[13]   Chardon, W.J., Menon, R.G. and Chien, S.H. (1996) Iron Oxide Impregnated Filter Paper (Pi Test): A Review of Its Development and Methodological Research. Nutrient Cycling in Agroecosystems, 46, 41-51.
https://doi.org/10.1007/BF00210223

[14]   Yoshida, S., Forno, D.A. and Cook, J.H. (1972) Laboratory Manual for Physiological Studies of Rice. The International Rice Research Institute, Philippines.

[15]   Walkley, A. and Black, C.A. (1934) An Examination of the Degtjareff Method for Determining Soil Organic Matter and a Proposed Modification of the Chromic Titration Method. Soil Science, 37, 29-38.
https://doi.org/10.1097/00010694-193401000-00003

[16]   Lindsay, W.L. and Norwell, W.A. (1978) Development of DTPA Soil Test for Zinc, Iron, Manganese and Copper. Science Society of America Journal, 42, 421-428.
https://doi.org/10.2136/sssaj1978.03615995004200030009x

[17]   Loeppert, R.H. and Inskeep, W.P. (1996) Iron. In: Sparks, D.L., Ed., Methods of Soil Analysis: Part 3, Chemical Methods, Soil Science Society of America Inc. and American Society of Agronomy Inc., Madison, WI, 639-663.

[18]   Soil Survey Staff (1999) Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys. Agricultural Handbook No. 436. USDA Natural Resources Conservation Service, Washington DC, 869.

[19]   Rattanarat, S., Pongsakul, P., Rattananukul, S., Marsangsan, V. and Arayangkul, T. (1983) Application of Zn, Mo and Ground Limestone for Field Crops by Seed Coating. Proceeding of the 21st Annual Conference Plant Science, Kasetsart University.

[20]   SAS, Inc. (2017) Statistical Analysis System, Cary, NC, USA.

[21]   Shuai, X., Zhou, Z. and Yost, R.S. (2003) Using Segmented Regression Models to Fit Soil Nutrient and Soybean Grain Yield Changes Due to Liming. Journal of Agricultural, Biological, and Environmental Statistics, 8, 240-252.
https://doi.org/10.1198/108571103322161586

[22]   Anderson, R.L. and Nelson, L.A. (1975) A Family of Models Involving Intersecting Straight Lines and Concomitant Experimental Designs Useful in Evaluating Response to Fertilizer Nutrients. Biometrics, 31, 303-318.
https://doi.org/10.2307/2529422

[23]   Day, P.R. (1965) Particle Fraction and Particle Size Analysis. In: Black, C.A., Ed., Method of Soil Analysis. Part 1. Agron, Madison, WI, 545-567.

[24]   Bremner, J.M. (1996) Nitrogen-Total. In: Sparks, D.L., Page, A.L., Helmke, P.A, Loeppert, R.H., Soltanpour, P.N., Tabatabai, M.A., Johnston, C.T. and Sumner, M.E., Eds., Methods of Soil Analysis, Part 3 Chemical Methods, Soil Science Society of America, Madison, WI, 1085-1121.

[25]   Jones, J.B. (2001) Laboratory Guide for Conducting Soil Tests and Plant Analysis. CRC Press, Boca Raton, FL.
https://doi.org/10.1201/9781420025293

 
 
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