The experiments were conducted on two adjacent sites on a farmer’s field in close proximity to the field research station of the University of Peradeniya, Sri Lanka (7◦ N, 81◦ E,415 m above sea level), from September 2003 to August 2004 and from September 2004 to August 2005 to encompass the major cropping season of the nation that corresponds to the Northeast Monsoon. The soil of the site was an Ultisol (Rhododult), with the following characteristics: texture sandy loam, with a pH (1:2.5 H2O) 6.42 ± 0.21; total N, available phosphorus (P), and potassium (K) levels of 38 ± 0.46, 3.2 ± 0.09, and 6.4 ± 0.82 mg g−1 soil respectively; cation exchange capacity (CEC) of 15.48 ± 1.08 m eq 100 g−1 soil;
organic-matter content of 7.62 ± 0.11g kg−1; and a water-holding capacity of 21.58% ± 0.22%.
The experiments were conducted on two adjacent sites on a farmer’s field in close proximity to the field research station of the University of Peradeniya, Sri Lanka (7◦ N, 81◦ E,415 m above sea level), from September 2003 to August 2004 and from September 2004 to August 2005 to encompass the major cropping season of the nation that corresponds to the Northeast Monsoon. The soil of the site was an Ultisol (Rhododult), with the following characteristics: texture sandy loam, with a pH (1:2.5 H2O) 6.42 ± 0.21; total N, available phosphorus (P), and potassium (K) levels of 38 ± 0.46, 3.2 ± 0.09, and 6.4 ± 0.82 mg g−1 soil respectively; cation exchange capacity (CEC) of 15.48 ± 1.08 m eq 100 g−1 soil;organic-matter content of 7.62 ± 0.11g kg−1; and a water-holding capacity of 21.58% ± 0.22%.
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