Boron and molybdenum requirements of the tomato crop in the granite soils of the Stanthorpe district

Abstract

Increased yields of tomatoes were obtained from boron (borax applied both as a soil dressing and as a foliage spray), from molybdenum (ammonium molybdate applied as a foliage spray), and from molybdenum plus boron. The increases were of the same magnitude in all three treatments. No additive effects were noted in plants receiving both molybdenum and boron. It is postulated that a deficiency of some other element restricted the yield potential of the crop and masked the additive effect expected from the combined boron-molybdenum treatments.