Rashwan, B., Ferweez, H. (2017). Effect of Mineral Nitrogen Fertilization and Compost on Stevia Yield and its Profitability.. Journal of Soil Sciences and Agricultural Engineering, 8(6), 215-222. doi: 10.21608/jssae.2017.37379
Basma Rashwan; H. Ferweez. "Effect of Mineral Nitrogen Fertilization and Compost on Stevia Yield and its Profitability.". Journal of Soil Sciences and Agricultural Engineering, 8, 6, 2017, 215-222. doi: 10.21608/jssae.2017.37379
Rashwan, B., Ferweez, H. (2017). 'Effect of Mineral Nitrogen Fertilization and Compost on Stevia Yield and its Profitability.', Journal of Soil Sciences and Agricultural Engineering, 8(6), pp. 215-222. doi: 10.21608/jssae.2017.37379
Rashwan, B., Ferweez, H. Effect of Mineral Nitrogen Fertilization and Compost on Stevia Yield and its Profitability.. Journal of Soil Sciences and Agricultural Engineering, 2017; 8(6): 215-222. doi: 10.21608/jssae.2017.37379
Effect of Mineral Nitrogen Fertilization and Compost on Stevia Yield and its Profitability.
1Soil, Water and Environ. Res. Inst., Agric. Res. Center, Giza, Egypt.
2Food Sci. and Techno. Dept. ,Fac. Agric. New Valley, Assiut University, Egypt.
Abstract
Stevia (Stevia rebaudiana Bertoni) was recently introduced to Egyptian agriculture in order to produce a natural sweetener (Steviol glycosides ) instead of sugar (Sucrose) to cover some of the lack of sugar production, which reached annually about 0.8 million ton. So, a field experiment was carried out at Mallawi Agriculture Research Station , Minia Governorate , Egypt, during two successive seasons (2014 and 2015) to study the effect of different levels of mineral N fertilization and compost on yield and its quality of stevia (Stevia rebaudiana Bertoni) under Middle Egypt conditions. The experimental design was a split plot in three replicates and the main plot were devoted N fertilizer levels ( 40, 60 and 80 kg N fed-1) while compost levels (0, 3 and 6 ton fed-1) were allocated in the sub plot. The obtained results revealed that N fertilizer level and/or compost level had a significant effect on plant height (cm) , fresh and dry leaves weight (g plant-1) , N, P& K contents of stevia leaves and N uptake kg fed-1, dry leaves yield kg fed-1 , stevioside (St %), rebaudioside A (Rb%), stevioside yield (kg/fed) and rebaudioside A yield (kg fed-1), the remained nutrients ( N,P & K (ppm) and OM % ) in the soil post-harvest of stevia in two growing seasons, except P% of leaf in the 2nd season for N fertilization. A significant interaction was scored between N fertilizer level and compost rate with regard to plant height (cm) , fresh and dry leaves weight (g plant-1) , N % of stevia leaves and N uptake kg fed-1 , dry leaves yield kg fed-1 , stevioside (St %), rebaudioside A (Rb%), stevioside yield (kg fed-1) and rebaudioside A yield (kg fed-1) of steviain the two growing seasons. From the present study , it may be concluded that the application of 60 kg mineral N fertilizer + 6.0 ton compost fed-1 was the best treatment for improving the yield and quality of stevia and is advisable to achieve the highest values of rebaudioside A (298.99 and 297.74 kg fed-1) ,and net profit of stevia.
View on SCiNiTO
Top