SOIL ECOLOGY IN SUSTAINABLE AGRICULTURAL SYSTEMS - CHAPTER 3 potx

... and no- tillage soils. Soil Sci. Soc. Am. J., 57 :39 2 39 9. Blevins, R. L., Smith, M. S., and Thomas, G. W., 1984. Changes in soil properties under no-tillage, in No-Tillage Agriculture: Principles ... UK, pp. 35 5 36 6. Coleman, D. C., 1985. Through a ped darkly: an ecological assessment of root -soil- microbial-faunal interactions, in Ecological Interactions in Soil, Fitter,...

Ngày tải lên: 11/08/2014, 15:20

... methylene-blue staining (second bar at each depth) in INTA and CONVB in 1990. CONVB = conventional farming system since 1985 on low-organic matter soil; INTA = integrated farming system since 1985 ... Cataloging -in- Publication Data Soil ecology in sustainable agricultural systems / edited by Lijbert Brussaard and Ronald Ferrera-Cerrato. p. cm. Proceedings of a symposium hel...

Ngày tải lên: 11/08/2014, 15:20

... can find more protective niches in fine-textured soils than in coarse-textured soils, leading to a higher grazing pressure in the coarse-textured soils (Postma, 1989) and a stronger increase in ... Relative Increase in C Mineralization after Drying, Fine-Sieving, and Rewetting of Soil Samples in Comparison with Drying/Rewetting Only (%) in Sandy, Loamy, and Clay Grassland So...

Ngày tải lên: 11/08/2014, 15:20

... Press LLC remaining roots increased while dry weight decreased. A slight net immobi- lization of minerals of N and P during autumn appeared in CONV but not in INT. During the next growing season ... in interpreting the results of such studies, however, as the immediate root environment, including root -soil contact, has been mod- ified. A comparison with decay along minirhizotron tubes...

Ngày tải lên: 11/08/2014, 15:20

... Reduction of damping- off diseases in soil from indigenous Mexican agroecosystems, in Agroecology, Researching the Ecological Basis for Sustainable Agriculture, Gliessman, S. R., Ed., Springer-Verlag, ... nutrients in inter- and intra-specific combinations of host plants. New Phytol., 102:1 03 111. Francis, C. A., 1989. Biological efficiencies in multiple-cropping systems. Adv. A...

Ngày tải lên: 11/08/2014, 15:20

... 14.6 3. 3 Bush fallow new 5.57 0 .37 3 13. 9 4.2 Alley cropping perm. 4. 83 0 .35 5 13. 5 3. 3 Alley cropping new 5 .35 0. 435 17.5 3. 6 Pueraria mulch perm. 5. 23 0.405 18.7 2.6 Pueraria mulch new 4.90 0 .37 7 ... Sustain Tropical Forest Resources, OTA-TM-F -3 1 , OTA US Congress, Washington, DC. Parera, V., 1989. The role of L. leucocephala in farming systems in Nusa Tenggara Tim...

Ngày tải lên: 11/08/2014, 15:20

... many of the great gains in production made in the green revo- lution by use of high-yielding varieties with high inputs of inorganic fertilizer cannot be maintained indefinitely. Among the causes ... available is insufficient to satisfy the needs for pro- duction. Significant input of N to replace that removed in harvest may be achieved in farming systems incorporating N-fixing spec...

Ngày tải lên: 11/08/2014, 15:20

... Quality Soil Building and maintaining soil quality is the basis for successful organic farming. However, before developing a soil management plan focused on soil quality in organic systems, ... (See page 8 for ordering instructions.) Building and maintaining soil quality is the basis for successful organic farming. Periodic soil testing will help determine soil quali...

Ngày tải lên: 20/04/2014, 17:43

... environments. I.Interactionwithbentoniteclaysystems.Water, Air, and Soil Pollution 32 (3 4): 30 3 31 4. 13 . O’Connor,S.andAga,D.S.,2007.Analysisoftetracyclineantibioticsinsoil:advances in extraction, clean-up ... Extraction 86 3. 3.2 Sonication-Assisted Extraction 86 3. 3 .3 Pressurized Liquid Extraction (PLE) 87 3. 3.4 Microwave-Assisted Solvent Extraction 88 3. 3.5 Superc r...

Ngày tải lên: 18/06/2014, 16:20

... (dimeglumine gadopentetate), 2[1,4,7,10-tetraaza-4,7-bis(carboxymethyl )-1 0-( 2-hydroxypropyl)cyc lododecyl]acetic acid, gadolinium salt (Gd[HP-DO3A]) and 2-( 1,4,7,10-tetraaza-4, 7- bis(carboxymethyl )-1 0-( [N-carboxymethyl)-N-(4-cyclohexylphenyl)carbamoyl]me thyl)cyclododecyl)acetic ... agent Gd-EOB-DTPA, Inorg. Chem., 38 , 1 134 , 1999. 31 . Toth, E., Kiraly, R., Platzek,...

Ngày tải lên: 18/06/2014, 16:20