Study of Nutrient Requirement of Lychee by Means of Plant Analyses

Abstract

During June 1999-May 2000 , recently mature shoots of first and second leat flushes and truits were sampled from lychee orchards in Chiengrai. Payao, chiengmai an dChiengrai Hortrcultural Research Centre. the samples were analyzed for essential nutrients. Subsequently, nutrient requirement for each shoot of the first and second leaf fulshes and fruit growth were determined. It was found that Hong Huay lychee required approximately 151.2 , 15.2, 98.9 , 38.8 , 23.1 , 0.24 , 0.62 , 0.12 , 0.14 and 0.12 mgshoot whereas Emperor lyches potassium, calucium, magnesium, iron, managanese, copper, boron and zinc, respectively. Regarding nutrient requirement of fruits, it was found that Hong Huay lychee required qpproximately 53.9 , 7.4 and 57.6 mg./fruit or 2.37 , 0.32 and 2.53 g/kg fresh fruit whereas Emperor lychee required 60.6 . 10.0 and 81.8 mg/fruit or 1.72 , 0.28 amd 2.32 g./kg fresh fruit of nitrogen, phosphorus and potassium, resupectively.