Response of asparagus (Asparagus officinails L.)plants to sources and rats of organic fertilization in newly reclaimed lands. [electronic resource].

Includes references.

This study was conducted at Strawberry Improvement Center, Experimental Farm, Nobaria, EI-Behira Governorate during the two successive seasons of 2002/2003 and 2003/2004 on Asparagus plants cv. UC157 to investigate the effect of seven different combinations from farmyard manure (FYM) and chicken manure (CM) on vegetative growth, early and total yield, early and total marketable yield and some chemical constituents in fern and spears. The study indicates that using 50 m3/feddan of chicken manure (CM) resulted in significant increments in plant height, number of main and lateral shoots, early and total yield, early and total marketable yield, average spear weight, spear diameter, dry matter of shoots, crowns and roots, TSS and ascorbic acid content in spears and the nitrogen, phosphorus and potassium content in fern and spears. Also, the same treatment showed the lowest values of spear fiber content. However, the lowest values for such studied characters were detected when using 50 m3 of farmyard manure. The results showed also the gradual increments in vegetative growth characters were recorded by increasing chicken manure rates and decreasing farmyard manure. Results indicate also that, the application of 10 m3 FYM + 40 m CM increased also spear diameter and nitrogen, phosphorus and potassium content in fern and spears. The highest values of spear fiber content were found in check plants in addition to those fertilized with by 50 m3 FYM. The study concluded that it could be enhance vegetative growth characteristics, yield and quality of spears by using 50 m3 of chicken manure in asparagus plantations mainly for export. Keywords: Asparagus, (Asparagus officinalis L), organic fertilization, vegetative growth, spear diameter, early and total yield, NPK, fibers.

Summary in Arabic.

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