Effect of Different Levels of Phosphorus on the Growth and Yield of Tea

Shamsul Islam (), F.S. Hamid (), Qamar-uz- Zaman (), Basharat Hussain Shah (), Fayaz Ahmad (), Hussain Shah () and Samra Aftab ()

Open Academic Journal of Advanced Science and Technology, 2019, vol. 3, issue 1, 11-16

Abstract: To evaluate the role of variable doses of phosphorus on the growth and yield of tea (Camellia sinensis L., variety, Qi-Men), the present study was projected. The experiment was conducted during 2016-17 and repeated during 2017-18 at National Tea and High-value crops Research Institute, Shinkiari. Phosphorus was applied in six variable doses @ 0, 75, 112.5, 150, 187.5 and 225 kg ha-1 as Di-Ammonium Phosphate. Nitrogen and Potassium were applied as basal doses. Nitrogen was applied in the form of Urea @ 225 kg ha-1 while Potassium was applied as Sulphate of Potash @ 75 kg K2O/ha. The full dose of phosphorus and Potassium was applied as basal dose while Nitrogen was applied in three split doses during March, July, September 2017& 2018. The experiment was laid out in Randomized Complete Block Design with 3 replications and six treatments. Plot size was kept as 2 rows 5 meter length and 1.2 meter width. Soil samples were collected before application of fertilizers for physico-chemical characteristics. All agronomic practices were kept uniform and plucking was done manually by keeping four leaves and a bud as standard. Results showed that the application of phosphorus significantly increased plant height, No .of leaves/plant, Leaf Length, No. of branches /plant. Tea was plucked 11 times each year and the total yield of each plot was obtained from the total harvest during 2016-17 & 2017-18. Maximum No. of branches/plant (9, 8), Plant Height (57, 55 cm), No. of Leaves (40, 41) and Leaf Length (17, 17 cm), Fresh leaves yield (5306, 3353 kg/ha), Made tea (1061, 671 Kg/ha) was obtained in treatment T3 respectively when NPK was applied @ 225-150-175 while minimum Plant height (46, 40 cm), No. of leaves/plant (31, 29) Leaf length (12, 11 cm) and No. of branches (6, 5), Fresh leaves yield (3419, 2292 kg/ha), Made tea yield (684, 458 kg/ha) was obtained in control plot (without any fertilizer) during both the years respectively. It was concluded that: 1. Phosphorus may be applied @ 225 kg ha-1 with combination of basal doses of nitrogen @ 245 kg/ha in three split doses and Potassium @ 75 kg K2O/ha to obtain maximum possible yield of tea. 2. Further experiments on different combination of Phosphorus and other major elements like N and K are required for confirmation of results.

Keywords: Phosphorus; Sulfur; Yield; Nutrients uptake; Antagonistic effect. (search for similar items in EconPapers)
Date: 2019
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