El-Ghamry, A. (2011). SOIL FERTILITY AND POTATO PRODUCTION AS AFFECTED BY CONVENTIONAL AND ORGANIC FARMING SYSTEMS. Journal of Soil Sciences and Agricultural Engineering, 2(2), 141-156. doi: 10.21608/jssae.2011.55420
A. M. El-Ghamry. "SOIL FERTILITY AND POTATO PRODUCTION AS AFFECTED BY CONVENTIONAL AND ORGANIC FARMING SYSTEMS". Journal of Soil Sciences and Agricultural Engineering, 2, 2, 2011, 141-156. doi: 10.21608/jssae.2011.55420
El-Ghamry, A. (2011). 'SOIL FERTILITY AND POTATO PRODUCTION AS AFFECTED BY CONVENTIONAL AND ORGANIC FARMING SYSTEMS', Journal of Soil Sciences and Agricultural Engineering, 2(2), pp. 141-156. doi: 10.21608/jssae.2011.55420
El-Ghamry, A. SOIL FERTILITY AND POTATO PRODUCTION AS AFFECTED BY CONVENTIONAL AND ORGANIC FARMING SYSTEMS. Journal of Soil Sciences and Agricultural Engineering, 2011; 2(2): 141-156. doi: 10.21608/jssae.2011.55420
SOIL FERTILITY AND POTATO PRODUCTION AS AFFECTED BY CONVENTIONAL AND ORGANIC FARMING SYSTEMS
Soils Dept, Fac. of Agric., Mansoura Univ., Egypt.
Abstract
A field experiment was conducted during the winter season of 2007/2008 at the Experimental Station of the Faculty of Agriculture, Mansoura University, Egypt, to evaluate the ability of water and ethanol-alcohol for extracting the nutrients from mature farmyard manure. In addition to assessing the effect of mature (FYM), sediments (separated from extract), and both foliar application of extracts of farmyard manure (as organic farming technique) and mineral fertilizer treatment (as conventional cultivation system) on the quality and yield of potato (Solanum tuberosum, L.) and soil health (physical, chemical and biological properties) after harvesting stage.
Nine treatments were arranged in a complete randomized block design with four replicates, (mineral NPK, mature FYM, watery FYM extract, watery sediment, watery FYM extract with sediment, ethanolic FYM extract, ethanolic sediment, ethanolic FYM extract with sediment, and control treatment). FYM extracts were sprayed on plant foliage, while others were added as soil application.
The soil application of mineral fertilizer (as conventional system) has the highest significant values for all vegetative growth parameters, yield, yield components, of potato comparing with other organic treatments. In contrary, the soil application of FYM achieved the highest values for improving soil health after harvesting stage (including soil physical, chemical and biological, properties), also reducing the accumulation of NO3- and NO2- contents in potato tuber.
FYM application methods (as organic system) enhanced all studied potato vegetative growth parameters, quality and quantity of the yield and also improve soil health, compared to the untreated treatment. For all potato plant growth parameters, FYM application methods can be arranged in the order: spraying of ethanolic FYM extract with its sediment> spraying of watery FYM extract with its sediment> spraying ethanolic FYM extract> spraying watery FYM extract> mature FYM> watery sediment> ethanolic sediment. While, for improving soil health parameters the soil application of mature FYM gave the highest values followed by spraying of watery FYM extract with its sediment> ethanolic FYM extract with its sediment> watery sediment> ethanolic sediment. Furthermore, it was observed that ethanol as extractor was more effective than water and consequently spraying ethanolic FYM extract with its sediment or alone achieved higher values for all potato growth parameters compared to spraying of watery FYM extract either with or without its sediment.
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