 | 1990 - 248 páginas
This same challenge faces many agroforestry Due to the site - specificity of so many agroforestry practices , it is ... In these conditions , the standard test for statistical significance becomes a “ justification " that the research ... | |
 | John Beer, Hans W. Fassbender, Jochen Heuveldop - 1989 - 464 páginas
ARNOLD , J.E.M. Economic considerations in agroforestry projects . ... BONNICKSEN , T.M. Initial Decision Analysis ( I.D.A. ) . ... Review of agroforestry project data : production , income , environmental impacts . | |
 | 34 páginas
... APPLICATION - 4One procedure for obtaining costs data which is used particularly by commercial forestry companies ... units for firewood production below the following modalities : a ) Formal experiments conducted only with inputs ... | |
 | 2001 - 498 páginas
In fertile soils , it has high survival and good initial growth , although inferior to other fast growing trees . ... Experimental data of IDIAP , in acid Ultisols , classify it with better behavior , when comparing with other native ... | |
 | 1999 - 304 páginas
... to traditional slash - and - burn agriculture we must study the long - term soil changes in these systems . ... of the experiment were to monitor long - term changes in soil nutrients , and assess their implications for sustainable ... | |
 | 262 páginas
For example , experiments are now underway in Misiones , NE Argentina and Bahia , Brazil ( 39 , 40 ) to explore whether this system can be adapted to other humid tropical and subtropical forest regions . Initial feedback on soil ... | |
 | 2004 - 866 páginas
For example , experiments are now underway in Misiones , NE Argentina and Bahia , Brazil ( 39 , 40 ) to explore whether this system can be adapted to other humid tropical and subtropical forest regions . Initial feedback on soil ... | |
 | OREGON. State University. Forest Research Laboratory - 1975 - 64 páginas
The project focuses on successful reforestation of degraded dry rangelands with native timber species and integrates research projects at M.Sc. and Ph.D. level . The initial phase lasts from 2001 to 2004 . | |
 | 16 páginas
For example , experiments are now underway in Misiones , NE Argentina and Bahia , Brazil ( 39 , 40 ) to explore whether this system can be adapted to other humid tropical and subtropical forest regions . Initial feedback on soil ... | |
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