The present investigation "Studies on the foliar application of Zinc and Boron in Guava (Psidium guajava L.) cv. Allahabad Safeda was carried out at Regional Horticulture Research Station, Udheywala, Jammu during 1998 on nine year old trees of uniform size and vigour on guava cv. Allahabad Safeda. The experiment was laid out in randomised block design with differen...