Ballinger, W. E. and Mason, D. D., Selection of a tissue for use in strawberry nutritional studies. Proc. Am. Soc. Hort. Sci.76, 359–365 (1960).
Bould, C., Leaf analysis as a diagnostic method and advisory aid in crop nutrition. Exp. Agr.4, 17–27 (1968).
Bould, C., Bradfield, E. G. and Clarke, G. M., Leaf analysis as a guide to the nutrition of fruit crops. I. General principles, sampling techniques and analytical methods. J. Sci. Food Agr.11, 229–242 (1960).
Bould, C., Bradfield, E. G. and Clarke, G. M., Leaf analysis as a guide to the nutrition of fruit crops. II. Distribution of total N, P, K, Ca and Mg in the laminae and petioles of raspberry (Rubus idaeus L.) as influenced by soil treatments. J. Sci. Food Agr.14, 359–364 (1963).
Cook, J. A. and Goheen, A. C., The effect of a virus disease, leafroll, on the mineral composition of grape tissue and a comparison of leafroll and potassium deficiency symptoms.In Plant Analysis and Fertilizer Problems. (ed. W. Reuther), pp. 338–354. No.8. American Institute of Biological Sciences (1961).
Davies, J. N. and Winsor, G. W., Effect of nitrogen, phosphorus, potassium, magnesium and liming on the composition of tomato fruit. J. Sci. Food Agr.18, 459–466 (1967).
Friis-Nielsen, B., Interpretation of chemical plant analyses and control of nutrient status of growing plants exemplified by the tomato plant. Plant and Soil30, 183–209 (1969).
Howlett, F. S., Variation pattern established by foliar analysis of vegetable plants.In plant Analysis and Fertilizer Problems. (ed. W. Reuther), pp. 355–388. No. 8. American Institute of Biological Sciences (1961).
Jones, L. H., Some effects of potassium deficiency on the metabolism of the tomato plant. Can. J. Bot.39, 593–606 (1961).
Lucas, R. E. and Wittwer, S. H., Soil and plant tissue nutrient levels as indices of fertilizer requirement for the production of greenhouse tomatoes. Quart. Bull. Mich. Agr. Exp. Sta.45, 595–607 (1963).
Messing, J. H. L. and Winsor, G. W., Boron in the nutrition of tomato plants. Rept. Glasshouse Crops Research Inst.1956, pp. 77–83 (1956).
Ministry of Agriculture, Fisheries and Food. Tomatoes. Bulletin No.77. H. M. S. O. (1962).
Ministry of Agriculture, Fisheries and Food. Liquid feeding of tomatoes. Advisory Leaflet No.520. H.M.S.O. (1971).
O'Neill, J. V. and Webb, R. A., Simultaneous determination of nitrogen, phosphorus and potassium in plant material by automatic methods. J. Sci. Food Agr.21, 217–219 (1970).
Owen, O., The analysis of tomato plants. Part II. The effect of manurial treatment on the composition of tomato foliage. J. Agr. Sci.21, 442–451 (1931).
Ozbun, J. L., Boutonnet, C. E., Sadik, S. and Minges, P. A., Tomato fruit ripening. I. Effect of potassium nutrition on occurrence of white tissue. Proc. Am. Soc. Hort. Sci.91, 566–572 (1967).
Ramig, R. E. and Vandecaveye, S. C., A study of certain nutrient levels for raspberries grown in water culture. Plant Physiol. Lancaster,25, 617–629 (1950).
Shaulis, N. J., Association between symptoms of potassium deficiency, plant analysis, growth, and yield of Concord grapes.In Plant Analysis and Fertilizer Problems. (ed. W. Reuther), pp. 44–57. No.8. American Institute of Biological Sciences (1961).
Thomas, W. T. and Mack, B. M., Foliar diagnosis study of climatic influences on the nutrition of spring and fall grown greenhouse tomatoes. Plant Physiol. Lancaster16, 117–144 (1941).
Trudel, M. J. and Ozbun, J. L., Influence du potassium sur les acides organiques du fruit de la tomate. Natural Can.98, 83–96 (1971).
Ulrich, A., Potassium content of grape leaf petioles and blades contrasted with soil analyses as an indicator of the potassium status of the plant. Proc. Am. Soc. Hort. Sci.41, 204–212 (1942).
Ward, G. M., The application of tissue analysis to greenhouse tomato nutrition. Proc. Am. Soc. Hort. Sci.83, 695–699 (1963).
Ward, G. M., Greenhouse tomato nutrition—a growth analysis study. Plant and Soil21, 125–133 (1964).
Wilcox, G. E., Tomatoes tell potassium needs. Better Crops with Plant Food, Jan–Feb, 4–7 (1965).
Winsor, G. W., Davies, J. N. and Messing, J. H. L., Studies on potash/nitrogen ratio in nutrient solutions, using trickle irrigation equipment. Rept. Glasshouse Crops Research Inst.1957, pp. 91–98 (1957).
Winsor, G. W., A long-term factorial study of the nutrition of greenhouse tomatoes. Proc. 6th Coll. Intern. Potash Inst. Florence/Italy 1968, pp. 269–281 (1968).
Winsor, G. W., Nutritional trials in greenhouse beds and borders. Proc. 6th Coll. Internat. Potash Inst. Florence/Italy 1968, pp. 282–292 (1968).
Woods, M., The effects of some nutritional and environmental factors on fruit quality in tomatoes.In Potassium and the Quality of Agricultural Products. Proc. 8th Congr. Intern. Potash Inst. Brussels 1966, pp. 313–323 (1966).