| 000 | 017550000a22004090004500 | ||
|---|---|---|---|
| 903 | _aE | ||
| 904 | _aBCO | ||
| 905 | _aC | ||
| 908 | _aJ | ||
| 909 | _aAS | ||
| 912 | _aEn | ||
| 912 | _aEn | ||
| 914 | _aSILVI | ||
| 914 | _aRIBRE | ||
| 914 | _aAG | ||
| 082 | 0 | 4 | _a30991 |
| 100 |
_aSomarriba, Eduardo _9120490 |
||
| 100 | 1 |
_985806 _aLega, F. |
|
| 260 | _c1991 | ||
| 041 | 0 | _aEn | |
| 520 | _aAn analysis is made of the animal stocking rate used in commercial Pinus caribaea plantations 2,5-8,5 yr old. Pines were planted at 2,5 x 2,5 m and programmed for clear-cut harvest at 10 yr rotations (pulpwood). Cattle grazing was introduced to reduce weeding costs. Stocking rate in 1983-1985 was 0,67 AU/ha/yr (AU = animal units 350 kg live weight). A quadratic model calculated using 1984 data (S = 0,0108 + 0,385A-0,0418Aø) describes the relationship between animal stocking rate (S) and stand age (A < 9,5 in yr). The model predicts a maximum of 0,89 AU/ha/yr at plantation age 4,5 yr. Grazing started at plantation ages > 2,5 yr; no plantations older than 9,5 yr are grazed. | ||
| 650 | 1 | 4 |
_9164683 _aSISTEMA AGROSILVOPASTORIL |
| 650 | 1 | 4 |
_9136473 _aARBOLES CON PASTO |
| 650 | 1 | 4 |
_9136506 _aARBOLES Y ANIMALES |
| 650 | 1 | 4 |
_9158544 _aPINUS CARIBAEA |
| 650 | 1 | 4 |
_9167494 _aTROPICO HUMEDO |
| 650 | 1 | 4 |
_92064 _aCOSTA RICA |
| 691 |
_9158544 _aPINUS CARIBAEA |
||
| 691 |
_aCOSTA RICA _92064 |
||
| 692 | _aPINUS CARIBAEA | ||
| 692 | _aCOSTA RICA | ||
| 773 | 0 |
_tAgroforestry Systems (Pa©Ưses Bajos) _d1991 _gv.13(2) p. 177-185 |
|
| 040 |
_aCR-TuBCO _cCR-TuBCO _bEs |
||
| 245 | 1 | 0 | _aCattle grazing under Pinus caribaea. 1. Evaluation of farm historial data on stand age and animal stocking rate |
| 942 | _cANA | ||
| 003 | CR-TuBCO | ||
| 999 |
_c51655 _d51655 |
||