AVRDC (1990): Vegetable Production Training Manual. Taiwan, AVRDC Shanhua Talnau. Benjamin J.G., Nielsen D.C. (2004): A method to separate plant roots from soil and analyze root surface area. Plant and Soil, 267: 225–234. https://doi.org/10.1007/s11104-005-4887-3 Bremmer M., Mulvaney S. (1982): Nitrogen-total. In: Page A.L., Miller R.H., Keeney D.R. (eds): Methods of Soil Analysis, Part 2. Chemical and Microbiological Properties, 2nd Ed. Agronomy series No. 9 ASA. Madison, SSSA: 595–624. Chapman D., Partt P. (1961): Methods of analysis of soils, plant and water. Berkeley, Univer-sity of California: 150–200. Cottenie A., Verloo M., Kiekens L., Velgh G., Camerlynch R. (1982): Chemical Analysis of Plants and Soils. Laboratory for Analytical and Agrochemistry. Ghent, State University. Díaz-Pérez C., Batal D. (2002): Colored plastic film mulches affect tomato growth and yield via changes in root-zone temperature. Journal of the American Society for Horticultural Sci-ence, 127: 127–135. https://doi.org/10.21273/JASHS.127.1.127 Dodd C., He J., Turnbull N., Lee K., Critchley C. (2000): The influence of supraoptimal root-zone temperatures on growth and stomatal conductance in Capsicum annuum L. Journal of Experimental Botany, 51: 239–248. https://doi.org/10.1093/jexbot/51.343.239 FAO (1991): Localized irrigation. Irrigation and Drainage, Paper No. 36. Ibarra L., Zermeno A., Lozano J., Cedeno B., Ortega H. (2008): Changes in soil temperature, yield and photosynthetic response of potato (Solanum tuberosum L.) under coloured plastic mulch. Agrochimica, 52: 263–272. Ibarra L., Quezada R., Cedeno B., Rio D., de la Rosa M. (2006): Watermelon response to plastic mulch and row covers. European Journal of Horticultural Science, 71: 262–266. Iqbal Q., Amjad M., Asi R., Ali A., Ahmed R. (2009): Vegetable and reproductive evaluation of hot peppers under different plastic mulches in in poly/plastic tunnel. Pakistan Journal of Agricultural Sciences, 46: 113–118. Jenni S., Cloutier C., Bourgeois G., Stewart A. (1996): A heat unit model to predict growth and development of muskmelon to anthesis of perfect flowers. Journal of the American Society for Horticultural Science, 121: 274–280. https://doi.org/10.21273/JASHS.121.2.274 Kasirajan S., Ngouajio M. (2012): Polyethylene and biodegradable mulches for agricultural applications, a review. Agronomy for Sustainable Development, 32: 501–529. https://doi.org/10.1007/s13593-011-0068-3 Lamont J. (2005): Plastics: Modifying the microclimate for the production of vegetable crops. HortTechnology, 15: 477–481. https://doi.org/10.21273/HORTTECH.15.3.0477 Mostafa H. (2014): Effective moisture conservation method for heavy soil under drip irriga-tion. Agricultural Engineering International: CIGR Journal, 16: 1–9. Murphy J., Riley P. (1962): A modified single solution method for determination of phosphate in natural waters. Analytica Chimica Acta, 27: 31–36. https://doi.org/10.1016/S0003-2670(00)88444-5 Tarara M. (2000): Microclimate modification with plastic mulch. HortScience, 35: 169–180. https://doi.org/10.21273/HORTSCI.35.2.169 Thompson L., Doerge A., Godin E. (2002): Subsurface drip irrigation and fertigation of broc-coli: I. Yield, quality, and nitrogen uptake. Soil Science Society of America Journal, 66: 186–192. Zhao H., Xiong C., Li M., Wang Y., Qiang C. (2012): Plastic film mulch for half growing-season maximized WUE and yield of potato via moisture temperature improvement in a semi-arid agroecosystem. Agricultural Water Management, 104: 68–78. https://doi.org/10.1016/j.agwat.2011.11.016