Sullivan, P. (1998) Intercropping Principles and Production Practices. Appropriate Technology Transfer for Rural Areas (ATTRA). Fayettiville Publications, Arizona, 230p.
http://www.iatp.org/files/Intercropping_Principles_and_Production_Practi.htm

has been cited by the following article:

• TITLE: Root Length Density in Maize/Cowpea Intercropping under a Basin Tillage System in a Semi-Arid Area of Zimbabwe

  AUTHORS: E. D. N. Dube, T. Madanzi, A. Kapenzi, E. Masvaya

  KEYWORDS: Intercropping, Competition, Root Length Density, Grain Yield

  JOURNAL NAME: American Journal of Plant Sciences, Vol.5 No.11, May 14, 2014

  ABSTRACT: A study to assess the effect of intercropping maize (Zea mays L.) and cowpea (Vigna unguiculata L.) within the same basin or outside the basin on root length density (RLD) was conducted at the International Crop Research Institute for Semi-Arid Tropics (ICRISAT) Matopos Research Station from December 2009 to April 2010. The experiment was laid out in a Randomised Complete Block Design (RCBD) with four treatments replicated four times namely; sole maize, sole cowpea, maize-cowpea intercrop with cowpea and maize planted within the same basin and maize-cowpea intercrop with cowpea planted 20 cm outside the maize basin. There was significant difference (P