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Effect of sampling time and depth on P. fractions in agroforestry systems . ... Long - term effects of application of organic residues to a soil derived from volcanic ash . In : Actas IV Semana Científica del CATIE . CATIE , Turrialba . | |
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Manganese toxicity in crops and soils following improved fallows . American Society , Annual Meeting ... Long - term effects of application of organic residues to a soil derived from volcanic ash . In : Actas IV Semana Científica del ... | |
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( Society for Invertebrate Pathology ) . Pp . 42 . Kass , D. , Vasconcelos , J. , Tavares , Fernanda 1998. Long - term effects of application of organic residues to a soil derived from volcanic ash . 16th . World Congress of Soil ... | |
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Kass , D. , Vasconcelos de Macêdo , J. and Tavares da Costa , F. ( 1998 ) Long - term effects of application of organic residues to a soil derived from volcanic ash . Actes du 16è Congrès Mondial de Science du Sol ( Proceedings of the ... | |
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Long - term effects of application of organic residues to a soil derived from volcanic ash . 16th . World Congress of Soil Science . Scientific registration no . 634 , Symposium no . 40 . Martínez , A. , Hidalgo , E. , Flores , L. 1998. | |
 | Pedro A. Sánchez, Edilberto Camacho - 1981 - 650 páginas
DJOKOTO , R. K. , y STEPHENS , D. Thirty long term fertilizer experiments under continuous cropping in Ghana . ... 1961 . ENDREDY , A. S. de . The organic matter content of Gold Coast soils . Trans . 5th Int . Congr . Soil Sci . | |
 | Sam Gerrits - 1995 - 318 páginas
As a result of a high organic matter degradation rate and high moisture capacity , the proton donor concentration in forest ... The normally held view that forests on nutrient rich soils are not very economical in their nutrient use ... | |
 | 964 páginas
Many chemical data reported in the extensive literature on volcanic ash soils are related to air - dry samples ... data in terms of soil fertility evaluation , fertilizer use and other problems concerning agricultural practice . III c . | |
 | 126 páginas
20 30 40 50 Organic matter ( % ) , 60 Figure 4.13 k - m Relations between the contents of trace elements and the organic matter content . ... Here the diluting effect of organic matter is compressed to the left side of the diagram . | |
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