| 000 | 02359nam a2200241#a 4500 | ||
|---|---|---|---|
| 001 | vtls000000457 | ||
| 008 | 230822s1972 xx 000 0 eng d | ||
| 040 | _aJPS | ||
| 090 | 0 | 0 | _aFAO-PAPER 1 631.67 DON |
| 100 |
_aDONEEN,I D. _eauthor |
||
| 245 | 0 | _aIrrigation practice and water management | |
| 260 |
_aRome: FAO, _c1972 |
||
| 300 | _a84p | ||
| 440 | _aFAO IRRIGATION AND DRAINAGE PAPER NO.01 | ||
| 505 | _a1. Introduction. 2. Soil. 3. Soil texture. 3.1 Sand. 3.2 Sandy loam.3.3 Loam 3.4 Silt loam. 3.5 Clay loam. 3.6 Clay. 4. soil structure. 5. Storage of soil moisture. 5.1 Saturation. 5.2 Field capacity. 5.3 Permanent wilting percentage. 5.4 Readly available moisture. 6. Measuring soil moisture. 6.1 Tensiometers. 6.2 Electric resistances blooks. 6.3 Neutron method. 6.4 Field capacity determinations. 6.5 Permanent wilting percentages determinations. 7. Judging soil moisture conditions in the field. 8. How soils are wetted. 9. Influences of a soil profile on the wetting of soil. 7.1 Profile A. 7.2 Profile B. 7.3 Profile C. 7.4 Profile D. 7.5 Profile E. 7.6 Profile F. 7.7 Profile G. 7.8 Profile H. 8. Evaporation and moisture movement. 8.1 Evaporation from saturated soils. 8.2 Cultivating and evaporation. 8.3 Cracking in soils and evaporation. 9. Use of water by plants. 9.1 Factors influencing transpiration. 9.2 Consumptive use of water by plants. 9.3 Comsumptive use studies. 9.4 Root development and utilization of soil moisture . 10. Irrigation experiments for improving irrigation practice. 10.1 Plot arrangement 10.2 Plot size. 10.3 Soil moisture record. 10.4 Measuring irrigation water. 10.5 Vegetative growth measurements. 10.6 Other treatments 10.7 Irrigation experiments under high water table conditions . 11. Infiltration rates . 12. Methods of irrigation. 12.1 Border irrigation. 12.2 Level border and basin irrigation. 12.3 Contour ditch irrigation. 12.4 Furrow irrigation. 12.5 Corrugation irrigation. 12.6 Sub-irrigation. 13. Land grading for surface irrigation. 14. Irrigation efficiency. 14.1 Estimating irrigation efficiency and water applications guide to efficients applications of water. 15. Selected references. | ||
| 546 | _aENG | ||
| 650 | 1 | 0 | _aIRRIGATION. |
| 650 | 2 | 0 | _aMANAGEMENT. |
| 650 | 2 | 0 | _aWATER. |
| 942 | _cMONO | ||
| 990 | _a1972 | ||
| 999 |
_a00198 _a631.67 DON _a00199 00200 00202 00203 _aVIRTUA00 _c386 _d386 |
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| 003 | JPS | ||