Foliar application of low-biuret urea and fruit canopy position in the tree influence the leaf nitrogen status and physico-chemical characteristics of kinnow mandarin (Citrus reticulata Blanco)
2009
Khan, A.S. (University of Agriculture, Faisalabad (Pakistan). Inst. of Horticultural Sciences) | Malik, A.U. (University of Agriculture, Faisalabad (Pakistan). Inst. of Horticultural Sciences) | Pervez, M.A. (University of Agriculture, Faisalabad (Pakistan). Inst. of Horticultural Sciences) | Saleem, B.A. (University of Agriculture, Faisalabad (Pakistan). Inst. of Horticultural Sciences) | Rajwana, I.A. (Bahauddin Zakariya Univ., Multan (Pakistan). Univ. Coll. of Agriculture) | Shaheen, T. (National Inst. for Biotechnology and Genetic Engineering, Faisalabad (Pakistan)) | Anwar, R.
Experiments were conducted to study i) the influence of supplemental foliar application of low-biuret urea (LBU) on the leaf nitrogen status and fruit quality and ii) the role of fruit canopy positions in the trees on the physico-chemical characteristics of Kinnow mandarin fruit. In first experiment, foliar application of LBU twice (before blooming and after fruit set) significantly brought the leaf N content of the Kinnow trees from deficient to optimum level as compared to single application before blooming or after fruit set and control trees. Trees sprayed with LBU twice also exhibited higher juice and pulp weight compared to other treatments. However, other quality parameters were not significantly affected with LBU application. Results of second experiment revealed that fruit harvested from inside of the tree canopy exhibited higher fruit volume; fruit, peel and pulp weight in contrast to the fruit harvested from other canopy positions. Highest juice percentage was rec
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