Standardization of leaf sampling technique in Sapota (Achras sapota L.) cv. Cricket Ball under Tarai condition
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Date
2014-07
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present investigation was carried out at Horticulture Research Centre, Patharchatta and Department of Horticulture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar during the year April 2013 to April 2014. The experiment was conducted in randomized block design and three factor randomized block design. The three factors consisted of leaf age, position of leaves and sample size having 54 treatments and four replications. The main aim of the study was to investigate the suitable leaf age, position of leaves and sample size of Sapota for diagnose the nutrient status. The results showed that leaf age and position of leaves had significant influence on leaf mineral composition in Sapota, whereas, the sample size could not exert any significant influence on leaf mineral composition except for iron,
manganese and copper content. Interaction between leaf age and position of leaf was found to be significant for copper content whereas, the interaction between position of leaf and sample size was observed to be significant for iron, manganese and copper. In general stability of N and Mn was found in 8-10 month old leaves, P and Ca was stabilized in 6-8 month old leaves. K stabilized in 10 -12 month old leaves. For Mg, Zn
and Cu stability of nutrients was observed in 4-6 month old leaves while Fe stabilized in 2-4 month old leaves.
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