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Mineral properties and their balance in manure, soil, plant and water of pot‐cultured napiergrass ( Pennisetum purpureum Schumach)
Author(s) -
Idota Sachiko,
Hasyim Hadijah,
Wadi Ahmad,
Ishii Yasuyuki
Publication year - 2005
Publication title -
grassland science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.388
H-Index - 19
eISSN - 1744-697X
pISSN - 1744-6961
DOI - 10.1111/j.1744-697x.2005.00027.x
Subject(s) - pennisetum purpureum , manure , agronomy , nutrient , phosphorus , potassium , chemistry , environmental science , biology , dry matter , organic chemistry
In order to investigate mineral properties in manure, soil, plant and water of pot‐cultured napiergrass ( Pennisetum purpureum Schumach cv. Wruk wona), napiergrass plants were grown in a sandy soil of 1/2000 a Wagner pots, designated as a plant (P) plot and a without‐plant (WP) plot and were set under the same levels of manure application to compare the mineral properties with a P plot in 2002 and 2003. Plants were treated under four (control, low, medium and high) and three (control, low and high) levels of basal cattle manure application in 2002 and 2003, respectively. Total nitrogen (TN) and total phosphoric acid (TP) concentrations of applied manure were higher than those of sampled manure during the growing period in all application levels in both P and WP plots, while the rate of decrease in each element was higher in P plots than in WP plots. Soil inorganic nitrogen (IN) concentration changed in the same pattern with the soil electric conductivity (EC), was lower in P plots than in WP plots and also decreased greatly from July to August and tended to decrease from August to September in all manure application levels. The contents and concentrations of TN and TP in the whole plant, as well as in each plant part of napiergrass, increased with the increase in manure application and the major nutrient elements of total potassium (TK), calcium (Ca) and magnesium (Mg) contents also increased, where the equivalent ratio of K/(Ca + Mg) was higher in stem with leaf sheath than in leaf blade. In all application levels, TN concentrations of percolating water were consistently lower in P plots than in WP plots and were not significantly different among application levels in P plots, while they increased with the increase in manure application in WP plots. Nitrogen and phosphoric acid use efficiencies by napiergrass in P plots were calculated at approximately 42% and 25–30%, respectively. The significance of accumulated nutrients from the previous cropping by manure application was discussed under the sequence of cropping systems in napiergrass.