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1 Csizinszky AA, "Yield response of bell pepper and tomato to controlled release fertilizers on sand" 17 : 1535-1549, 1994
2 Shoji S, "Use of polyolefin-coated fertilizers for increasing fertilizer efficiency and reducing nitrate leaching and nitrous oxide emissions" 39 : 147-152, 1994
3 NIAST, "The methods of soil and plant analysis"
4 Gething PA, "The effect of fertilizers on the growth of orchid (Odontoglossum) seedlings" 29 : 94-101, 1977
5 Amans EB, "The effect of controlled-release fertilizer ‘Osmocote’ on growth, yield and composition of onion plants" 37 : 79-84, 1994
6 Yen WY, "The acidification of sphagnum moss substrate during Phalaenopsis cultivation" 46 : 1022-1026, 2011
7 Hutchinson C, "Testing of controlled release fertilizers programs for seep irrigated Irish potato production" 26 : 1709-1723, 2003
8 NIAST, "Standard investigation methods for agricultural experiment"
9 Trenkel ME, "Slow-and controlled-release and stabilized fertilizers: an option for enhancing nutrient use efficiency in agriculture" International Fertilizer Industry Association (IFA) 2010
10 Zheng XN, "Response of Cymbidium sinense to drought stress" 67 : 295-299, 1992
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