vegetable dehydration in general has been taken up seriously. Poland has been involved with considerable tonnages of potato products in flake and ran orm There were, of course, instances where the infrastructure failed to et up with the requisite parameters in horticultural terms, particularly in sub-tropical and tropical regions where irrigation and power plant were inescapably involved. Site photographs indicate where such infrastructural problems arose, notably in Northern Nigeria where attempts were made to rrigate many hectares of scrub/desert land on the southern shores of Lake Chad. Full cognisance was not taken of the lack of horticultural manpower available to take full advantage of the newly irrigated land where new skills were needed A second example was in Pernambuco, Brazil, where the Rio francisco offered massive reserves of irrigation water, excellent manpower training in horticulture, but not sufficient risk capital to put the irrigation and power plant in place, thereby enhancing the infrastructure to support food processing. Neither government nor private investors had the risk capital available at the time of the study In central Turkey where cotton growing tended to be on a mono- culture basis, diversification into vegetable processing failed to attract conservative farmers and there was insufficient interest to wait for some three to four years before a return on equity profit could be anticipated Very interesting information was gained through studies in Iran where desert irrigation is very feasible, thanks to the construction possibly a century or more ago of underground ducts extending from a mountain range on the shores of the Caspian Sea to regions as distant as Khoramshaar(central Iran) from where contour irrigation is carried out efficiently by Israeli management on annual crops of tomatoes. Desert horticulture has good potential if a political solution can be found in the future. In Israel this has been undoubtedly proved and the fact that, in the case in point, international co-operation can pay off handsomely if the will can be sustained In some of the infrastructural studies the author acknowledges the patience and invaluable help offered by Mike Cannon, Technical Manager of Mitchell Dryers Ltd, for suggesting modifications standard drying plant design where exceptional circumstances prevailed and standard plant did not meet requirements The author also thanks the following for their permission to use illustrative material Dodman Ltd, Peter Holland Ltd, International Machinery Corp, Mitchell Dryers Ltd, Niro Atomizer Ltd, Nymek, Rosin Engineering Co Ltd, Rossi Catelli, Russell Finex Ltd, Tito Manzini, Urschel Laboratories Inc, Zacmivegetable dehydration in general has been taken up seriously. Poland has been involved with considerable tonnages of potato products in flake and granule form. There were, of course, instances where the infrastructure failed to meet up with the requisite parameters in horticultural terms, particularly in sub-tropical and tropical regions where irrigation and power plant were inescapably involved. Site photographs indicate where such infrastructural problems arose, notably in Northern Nigeria where attempts were made to irrigate many hectares of scrub/desert land on the southern shores of Lake Chad. Full cognisance was not taken of the lack of horticultural manpower available to take full advantage of the newly irrigated land where new skills were needed. A second example was in Pernambuco, Brazil, where the Rio Francisco offered massive reserves of irrigation water, excellent manpower training in horticulture, but not sufficient risk capital to put the irrigation and power plant in place, thereby enhancing the infrastructure to support food processing. Neither government nor private investors had the risk capital available at the time of the study. In central Turkey where cotton growing tended to be on a mono￾culture basis, diversification into vegetable processing failed to attract conservative farmers and there was insufficient interest to wait for some three to four years before a return on equity profit could be anticipated. Very interesting information was gained through studies in Iran where desert irrigation is very feasible, thanks to the construction possibly a century or more ago of underground ducts extending from a mountain range on the shores of the Caspian Sea to regions as distant as Khoramshaar (central Iran) from where contour irrigation is carried out efficiently by Israeli management on annual crops of tomatoes. Desert horticulture has good potential if a political solution can be found in the future. In Israel this has been undoubtedly proved and the fact that, in the case in point, international co-operation can pay off handsomely if the will can be sustained. In some of the infrastructural studies the author acknowledges the patience and invaluable help offered by Mike Cannon, Technical Manager of Mitchell Dryers Ltd, for suggesting modifications on standard drying plant design where exceptional circumstances prevailed and standard plant did not meet requirements. The author also thanks the following for their permission to use illustrative material - Dodman Ltd, Peter Holland Ltd, International Machinery Corp, Mitchell Dryers Ltd, Niro Atomizer Ltd, Nymek, Rosin Engineering Co Ltd, Rossi & Catelli, Russell Finex Ltd, Tito Manzini, Urschel Laboratories Inc, Zacmi. 4