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Effect of some mineral NPK rates and harvesting dates on productivity and quality of cassava yield [electronic resource].

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El-Sayed, S. F

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Language: English Summary language: Arabic Description: p.913-924Other title:

تأثير بعض معدلات التسميد المعدنى NPK ومواعيد الحصاد على انتاجية وجودة محصول الكاسافا [Added title page title]

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Mansoura University Journal of plant production, 2012 v. 3 (5) [electronic resource].

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In: Mansoura University Journal of Plant Production 2012.v.3(5)Summary: The present study was performed in a newly reclaimed land at Ali Moubark Farm, South Tahrir Research Station, Horticulture Research Institute, during the two successive growing seasons of 2009/2010 and 2010/2011, to study the effect of four rates of mineral NPK and harvesting dates on the productivity and quality of cassava tuber roots (Indonesian cultivar). The treatments included four different levels of mineral fertilizer NPK namely 50%, 100%, 150% and 200% of the recommended NPK (50 N + 77 P₂O₅ + 96 K₂O kg/fed.) by Sherif et al. (2003), and four harvesting dates (8, 9, 10 and 11 months from planting). Application of NPK fertilizer at rate of 50% significantly produced the highest chlorophyll content in leaves (SPAD), tuber roots yield and average weight of tuber root. On the contrary, the highest rate of 200% NPK increased plant height, leaf area.

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The present study was performed in a newly reclaimed land at Ali Moubark Farm, South Tahrir Research Station, Horticulture Research Institute, during the two successive growing seasons of 2009/2010 and 2010/2011, to study the effect of four rates of mineral NPK and harvesting dates on the productivity and quality of cassava tuber roots (Indonesian cultivar). The treatments included four different levels of mineral fertilizer NPK namely 50%, 100%, 150% and 200% of the recommended NPK (50 N + 77 P₂O₅ + 96 K₂O kg/fed.) by Sherif et al. (2003), and four harvesting dates (8, 9, 10 and 11 months from planting). Application of NPK fertilizer at rate of 50% significantly produced the highest chlorophyll content in leaves (SPAD), tuber roots yield and average weight of tuber root. On the contrary, the highest rate of 200% NPK increased plant height, leaf area.

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