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Reference list

The full Harvard references behind the clips on the Soil science page, in alphabetical order. References by clip shows which clip uses which source.

  • Agehara, S. and Warncke, D.D. (2005) 'Soil moisture and temperature effects on nitrogen release from organic nitrogen sources', Soil Science Society of America Journal, 69(6), pp. 1844-1855. Link
  • AHDB (2023) Nutrient management guide (RB209). Section 2: Organic materials. Updated June 2023. Coventry: Agriculture and Horticulture Development Board. Link
  • Albrecht, W.A. (1975) The Albrecht Papers, Vol. 1: Foundation Concepts. Edited by C. Walters. Kansas City: Acres U.S.A. (Origin of the cation balancing idea, not proof of it.) Link
  • Allen, R.G., Pereira, L.S., Raes, D. and Smith, M. (1998) Crop Evapotranspiration: Guidelines for Computing Crop Water Requirements. FAO Irrigation and Drainage Paper 56. Rome: FAO. Chapter 3, Meteorological data, equation 11. Link
  • Allen, R.G., Pereira, L.S., Raes, D. and Smith, M. (1998) Crop evapotranspiration: guidelines for computing crop water requirements. FAO Irrigation and Drainage Paper 56. Rome: FAO. Chapter 3, 'Meteorological data' (saturation vapour pressure and vapour pressure deficit). Link
  • Almeida, K.V., Jordan, E., Erickson, P.S. and Brito, A.F. (2024) 'Evaluating taste preference of different sources of Ascophyllum nodosum meal in dairy heifers', JDS Communications, 5(5), pp. 421-425. Link
  • Argo, W.R. and Biernbaum, J.A. (1996) 'The effect of lime, irrigation-water source, and water-soluble fertilizer on root-zone pH, electrical conductivity, and macronutrient management of container root media with impatiens', Journal of the American Society for Horticultural Science, 121(3), pp. 442-452. Link
  • ASHRAE (2021) 2021 ASHRAE Handbook: Fundamentals. Atlanta: ASHRAE. Chapter 1, Psychrometrics. Link
  • Bardgett, R.D. and van der Putten, W.H. (2014) 'Belowground biodiversity and ecosystem functioning', Nature, 515(7528), pp. 505-511. Link
  • Bary, A.I., Cogger, C.G. and Sullivan, D.M. (2016) Fertilizing with manure and other organic amendments. PNW 533. Pullman: Washington State University Extension (a Pacific Northwest Extension publication). Link
  • Beegle, D.B. and Durst, P.T. (2017) Managing Phosphorus for Crop Production. University Park, PA: Penn State Extension. Link
  • Beegle, D.B. and Lingenfelter, D.D. (2014) Soil Acidity and Aglime. University Park, PA: Penn State Extension. Page updated 17 November 2014. Link
  • Beerling, D.J., Epihov, D.Z., Kantola, I.B., Masters, M.D., Reershemius, T., Planavsky, N.J., Reinhard, C.T., Jordan, J.S., Thorne, S.J., Weber, J., Val Martin, M., Freckleton, R.P., Hartley, S.E., James, R.H., Pearce, C.R., DeLucia, E.H. and Banwart, S.A. (2024) 'Enhanced weathering in the US Corn Belt delivers carbon removal with agronomic benefits', Proceedings of the National Academy of Sciences, 121(9), e2319436121. Link
  • Besserer, A., Puech-Pagès, V., Kiefer, P., Gomez-Roldan, V., Jauneau, A., Roy, S., Portais, J.-C., Roux, C., Bécard, G. and Séjalon-Delmas, N. (2006) 'Strigolactones stimulate arbuscular mycorrhizal fungi by activating mitochondria', PLoS Biology, 4(7), e226. Link
  • Bonkowski, M. (2004) 'Protozoa and plant growth: the microbial loop in soil revisited', New Phytologist, 162(3), pp. 617-631. Link
  • Breuillin, F. et al. (2010) 'Phosphate systemically inhibits development of arbuscular mycorrhiza in Petunia hybrida and represses genes involved in mycorrhizal functioning', The Plant Journal, 64(6), pp. 1002-1017. Link
  • Brown, P.H., Bellaloui, N., Wimmer, M.A., Bassil, E.S., Ruiz, J., Hu, H., Pfeffer, H., Dannel, F. and Römheld, V. (2002) 'Boron in plant biology', Plant Biology, 4(2), pp. 205-223. Link
  • Browning, S. (2019) Using Wood Ash in the Garden. Lincoln, NE: Nebraska Extension in Lancaster County, University of Nebraska-Lincoln. 1 November 2019. Link
  • Buirs, L., Lung, S. and Punja, Z.K. (2025) 'The epidemiology and management of Botrytis cinerea causing bud rot on greenhouse cultivated cannabis (Cannabis sativa L.)', Canadian Journal of Plant Pathology, 47(5), pp. 443-463. Link
  • Chaganti, V.N. and Culman, S.W. (2017) 'Historical perspective of soil balancing theory and identifying knowledge gaps: a review', Crop, Forage & Turfgrass Management, 3(1), pp. 1-7. Link
  • Chaganti, V.N., Culman, S.W., Herms, C., Sprunger, C.D., Brock, C., Leiva Soto, A. and Doohan, D. (2021) 'Base cation saturation ratios, soil health, and yield in organic field crops', Agronomy Journal, 113(5), pp. 4190-4200. Link
  • Chalker-Scott, L. (1999) 'Environmental significance of anthocyanins in plant stress responses', Photochemistry and Photobiology, 70(1), pp. 1-9. Link
  • Chandra, S., Lata, H., Khan, I.A. and ElSohly, M.A. (2008) 'Photosynthetic response of Cannabis sativa L. to variations in photosynthetic photon flux densities, temperature and CO2 conditions', Physiology and Molecular Biology of Plants, 14(4), pp. 299-306. Link
  • Chandra, S., Lata, H., Khan, I.A. and ElSohly, M.A. (2011) 'Temperature response of photosynthesis in different drug and fiber varieties of Cannabis sativa L.', Physiology and Molecular Biology of Plants, 17(3), pp. 297-303. Link
  • Chitarra, G.S., Breeuwer, P., Nout, M.J.R., van Aelst, A.C., Rombouts, F.M. and Abee, T. (2003) 'An antifungal compound produced by Bacillus subtilis YM 10-20 inhibits germination of Penicillium roqueforti conidiospores', Journal of Applied Microbiology, 94(2), pp. 159-166. Link
  • Clark, A. (ed.) (2007) Managing Cover Crops Profitably, 3rd edn. Sustainable Agriculture Research and Education (SARE) Handbook Series 9. College Park, MD: SARE. Link
  • Clark, K. and Beegle, D. (2025) Nutrient Management to Improve Nitrogen Efficiency and Reduce Environmental Loss. University Park, PA: Penn State Extension. Link
  • Cockson, P., Landis, H., Smith, T., Hicks, K. and Whipker, B.E. (2019) 'Characterization of Nutrient Disorders of Cannabis sativa', Applied Sciences, 9(20), 4432. Link
  • Colorado State University Extension (no date) PlantTalk Colorado 1548: Impact of Watering Lawns and Gardens with Chlorinated Water. Fort Collins: Colorado State University. Link
  • Cox, D. (1995) Water Quality: pH and Alkalinity. Amherst, MA: UMass Extension Greenhouse Crops and Floriculture Program, University of Massachusetts Amherst. Prepared August 1995; page last updated 16 June 2026. Link
  • Danziger, N. and Bernstein, N. (2021) 'Plant architecture manipulation increases cannabinoid standardization in "drug-type" medical cannabis', Industrial Crops and Products, 167, 113528. Link
  • Danziger, N. and Bernstein, N. (2021) 'Shape matters: plant architecture affects chemical uniformity in large-size medical cannabis plants', Plants, 10(9), 1834. Link
  • Deng, Y., Chen, K., Teng, W., Zhan, A., Tong, Y., Feng, G., Cui, Z., Zhang, F. and Chen, X. (2014) 'Is the inherent potential of maize roots efficient for soil phosphorus acquisition?', PLoS ONE, 9(3), e90287. Link
  • Di, H.J. and Cameron, K.C. (2002) 'Nitrate leaching in temperate agroecosystems: sources, factors and mitigating strategies', Nutrient Cycling in Agroecosystems, 64(3), pp. 237-256. Link
  • Doares, S.H., Syrovets, T., Weiler, E.W. and Ryan, C.A. (1995) 'Oligogalacturonides and chitosan activate plant defensive genes through the octadecanoid pathway', Proceedings of the National Academy of Sciences, 92(10), pp. 4095-4098. Link
  • Dontsova, K.M. and Norton, L.D. (2002) 'Clay dispersion, infiltration, and erosion as influenced by exchangeable Ca and Mg', Soil Science, 167(3), pp. 184-193. Link
  • du Jardin, P. (2015) 'Plant biostimulants: definition, concept, main categories and regulation', Scientia Horticulturae, 196, pp. 3-14. Link
  • Dupont, K., van den Berg, T.E., Zhang, J., Moene, A.F. and Vialet-Chabrand, S.R.M. (2025) 'Beyond the boundary: a new road to improve photosynthesis via wind', Journal of Experimental Botany, 76(20), pp. 5791-5813. Link
  • DuPont, T. and Granatstein, D. (2020) Compost considerations. WSU Tree Fruit, Washington State University Extension (updated January 2020). Link
  • English, J.T., Thomas, C.S., Marois, J.J. and Gubler, W.D. (1989) 'Microclimates of grapevine canopies associated with leaf removal and control of Botrytis bunch rot', Phytopathology, 79(4), pp. 395-401. Link
  • Environment Canterbury (no date) Rural waste prevention and management. Christchurch: Environment Canterbury Regional Council. Link
  • Epstein, E. (1999) 'Silicon', Annual Review of Plant Physiology and Plant Molecular Biology, 50, pp. 641-664. Link
  • Fair Trading Act 1986 (New Zealand), s 12A (unsubstantiated representations). Wellington: Parliamentary Counsel Office. The standard for product claims. Link
  • Faust, J.E. and Logan, J. (2018) 'Daily light integral: a research review and high-resolution maps of the United States', HortScience, 53(9), pp. 1250-1257. Link
  • Fernández, V., Sotiropoulos, T. and Brown, P. (2013) Foliar Fertilization: Scientific Principles and Field Practices. 1st edn. Paris: International Fertilizer Industry Association (IFA). Link
  • Ferretti, D.F. (2023) A practical guide for using green crops in New Zealand, 1st edn (draft). Our Land and Water National Science Challenge. (A practice guide, not primary research.) Link
  • Fields, J.S., Fonteno, W.C. and Jackson, B.E. (2014) 'Hydration efficiency of traditional and alternative greenhouse substrate components', HortScience, 49(3), pp. 336-342. Link
  • Gale, E.S., Sullivan, D.M., Cogger, C.G., Bary, A.I., Hemphill, D.D. and Myhre, E.A. (2006) 'Estimating plant-available nitrogen release from manures, composts, and specialty products', Journal of Environmental Quality, 35(6), pp. 2321-2332. Link
  • Güçlü-Üstündağ, Ö. and Mazza, G. (2007) 'Saponins: properties, applications and processing', Critical Reviews in Food Science and Nutrition, 47(3), pp. 231-258. Link
  • Gosling, P., Mead, A., Proctor, M., Hammond, J.P. and Bending, G.D. (2013) 'Contrasting arbuscular mycorrhizal communities colonizing different host plants show a similar response to a soil phosphorus concentration gradient', New Phytologist, 198(2), pp. 546-556. Link
  • Grant, C.A. and Flaten, D.N. (2019) '3.0 Phosphorus behaviour in the soil', in 4R Management of Phosphorus Fertilizer in the Northern Great Plains: A Review of the Scientific Literature. Winnipeg: University of Manitoba, for Fertilizer Canada. Link
  • Greenspan, L. (1977) 'Humidity fixed points of binary saturated aqueous solutions', Journal of Research of the National Bureau of Standards, Section A: Physics and Chemistry, 81A(1), pp. 89-96. Link
  • Griffin, T.S. (2004 reprint) Using Wood Ash on Your Farm. Bulletin #2279. Orono, ME: University of Maine Cooperative Extension. Link
  • Griffiths, N. (1998) Best practice guidelines for using poultry litter on pastures. Agnote DPI-212, 2nd edn. NSW Agriculture. Link
  • Grossiord, C., Buckley, T.N., Cernusak, L.A., Novick, K.A., Poulter, B., Siegwolf, R.T.W., Sperry, J.S. and McDowell, N.G. (2020) 'Plant responses to rising vapor pressure deficit', New Phytologist, 226(6), pp. 1550-1566. Link
  • Harman, G.E., Howell, C.R., Viterbo, A., Chet, I. and Lorito, M. (2004) 'Trichoderma species, opportunistic, avirulent plant symbionts', Nature Reviews Microbiology, 2(1), pp. 43-56. Link
  • Hartz, T.K. and Johnstone, P.R. (2006) 'Nitrogen availability from high-nitrogen-containing organic fertilizers', HortTechnology, 16(1), pp. 39-42. Link
  • Hashem, A., Tabassum, B. and Abd Allah, E.F. (2019) 'Bacillus subtilis: a plant-growth promoting rhizobacterium that also impacts biotic stress', Saudi Journal of Biological Sciences, 26(6), pp. 1291-1297. Link
  • Hill Laboratories (2023) Self-Sampling Guide: Soil and Plant Sampling. Hamilton: R J Hill Laboratories Ltd. Link
  • Hill Laboratories (n.d.) Potting Media. Technical Note, KB Item 3184, Version 10. Hamilton, New Zealand: Hill Laboratories. Link
  • Hill Laboratories (no date) Analysis Request [soil and plant analysis request form, with sampling instructions]. Hamilton: R J Hill Laboratories Limited. Link
  • Hill Laboratories (no date) Cation Exchange Capacity and Base Saturation. Technical Note, KB Item 3188, Version 7. Hamilton: Hill Laboratories. Link
  • Hill Laboratories (no date) Compost Analysis. Services Offered, KB Item 3383, Version 25. Hamilton: R J Hill Laboratories Limited. Link
  • Hill Laboratories (no date) Soil Phosphorus Tests. Technical Note, KB Item 26049, Version 4. Hamilton: Hill Laboratories. Link
  • Hill Laboratories (no date) Soil Tests and Interpretation. Technical Note, KB Item 3196, Version 7. Hamilton: Hill Laboratories. Link
  • Horneck, D.A., Sullivan, D.M., Owen, J.S. and Hart, J.M. (2011) Soil Test Interpretation Guide. EC 1478, revised July 2011. Corvallis: Oregon State University Extension Service. Link
  • Ingham, E.R. (2005) The Compost Tea Brewing Manual, 5th edn. Corvallis, OR: Soil Foodweb Inc. (A practitioner manual, cited as the method reference for aerated brewing only.) Link
  • International Zinc Association (no date) Zinc in Fertilizer: options to consider. Zinc Nutrient Initiative fact sheet. International Zinc Association. Link
  • Jakobsen, I., Abbott, L.K. and Robson, A.D. (1992) 'External hyphae of vesicular-arbuscular mycorrhizal fungi associated with Trifolium subterraneum L.', New Phytologist, 120(3), pp. 371-380. Link
  • Jones, C. and Jacobsen, J. (2009) Micronutrients: Cycling, Testing and Fertilizer Recommendations. Nutrient Management Module No. 7 (4449-7), reprinted 2009. Bozeman: Montana State University Extension. Link
  • Kanabo, I.A.K. and Gilkes, R.J. (1988) 'The effect of particle size on North Carolina phosphate rock on its dissolution in soil and on levels of bicarbonate-soluble phosphorus', Fertilizer Research, 15(2), pp. 137-145. Link
  • Kelland, M.E., Wade, P.W., Lewis, A.L., Taylor, L.L., Sarkar, B., Andrews, M.G., Lomas, M.R., Cotton, T.E.A., Kemp, S.J., James, R.H., Pearce, C.R., Hartley, S.E., Hodson, M.E., Leake, J.R., Banwart, S.A. and Beerling, D.J. (2020) 'Increased yield and CO2 sequestration potential with the C4 cereal Sorghum bicolor cultivated in basaltic rock dust-amended agricultural soil', Global Change Biology, 26(6), pp. 3658-3676. Link
  • Ketterings, Q.M. and Barney, P. (2010) Phosphorus Soil Testing Methods. Agronomy Fact Sheet 15 (first released 2006). Ithaca: Nutrient Management Spear Program, Cornell University. Link
  • Khan, W., Rayirath, U.P., Subramanian, S., Jithesh, M.N., Rayorath, P., Hodges, D.M., Critchley, A.T., Craigie, J.S., Norrie, J. and Prithiviraj, B. (2009) 'Seaweed extracts as biostimulants of plant growth and development', Journal of Plant Growth Regulation, 28(4), pp. 386-399. Link
  • Kitaya, Y., Shibuya, T., Yoshida, M. and Kiyota, M. (2004) 'Effects of air velocity on photosynthesis of plant canopies under elevated CO2 levels in a plant culture system', Advances in Space Research, 34(7), pp. 1466-1469. Link
  • Kitaya, Y., Tsuruyama, J., Shibuya, T., Yoshida, M. and Kiyota, M. (2003) 'Effects of air current speed on gas exchange in plant leaves and plant canopies', Advances in Space Research, 31(1), pp. 177-182. Link
  • Kopittke, P.M. and Menzies, N.W. (2007) 'A review of the use of the basic cation saturation ratio and the "ideal" soil', Soil Science Society of America Journal, 71(2), pp. 259-265. Link
  • Lawson, T. and Blatt, M.R. (2014) 'Stomatal size, speed, and responsiveness impact on photosynthesis and water use efficiency', Plant Physiology, 164(4), pp. 1556-1570. Link
  • Lazicki, P., Geisseler, D. and Lloyd, M. (2020) 'Nitrogen mineralization from organic amendments is variable but predictable', Journal of Environmental Quality, 49(2), pp. 483-495. Link
  • Lee, C.H., Lee, D.K., Ali, M.A. and Kim, P.J. (2008) 'Effects of oyster shell on soil chemical and biological properties and cabbage productivity as a liming materials', Waste Management, 28(12), pp. 2702-2708. Link
  • Lefever, A., Ketterings, Q., Czymmek, K., O'Neil, K. and Hunter, M. (2014) Gypsum for Field Crops in New York. Agronomy Fact Sheet 83. Ithaca, NY: Cornell University Cooperative Extension, Nutrient Management Spear Program. Link
  • Leiva Soto, A., Culman, S.W., Herms, C., Sprunger, C. and Doohan, D. (2023) 'Managing soil acidity vs. soil Ca:Mg ratio: what is more important for crop productivity?', Crop, Forage & Turfgrass Management, 9(1), e20210. Link
  • Lewis, A.L., Sarkar, B., Wade, P., Kemp, S.J., Hodson, M.E., Taylor, L.L., Yeong, K.L., Davies, K., Nelson, P.N., Bird, M.I., Kantola, I.B., Masters, M.D., DeLucia, E., Leake, J.R., Banwart, S.A. and Beerling, D.J. (2021) 'Effects of mineralogy, chemistry and physical properties of basalts on carbon capture potential and plant-nutrient element release via enhanced weathering', Applied Geochemistry, 132, 105023. Link
  • Llewellyn, D., Golem, S., Foley, E., Dinka, S., Jones, A.M.P. and Zheng, Y. (2022) 'Indoor grown cannabis yield increased proportionally with light intensity, but ultraviolet radiation did not affect yield or cannabinoid content', Frontiers in Plant Science, 13, 974018. Link
  • Logan Labs (n.d.) Our Services. Lakeview, OH: Logan Labs, LLC. Link
  • Lopez, R.G., Mickelbart, M.V. and Pasian, C. (2010) Alkalinity Management in Soilless Substrates. HO-242-W. West Lafayette, IN: Purdue Extension. Link
  • Lynch, J.M. and Whipps, J.M. (1990) 'Substrate flow in the rhizosphere', Plant and Soil, 129(1), pp. 1-10. Link
  • Mackay, A.D. and Barber, S.A. (1984) 'Soil temperature effects on root growth and phosphorus uptake by corn', Soil Science Society of America Journal, 48(4), pp. 818-823. Link
  • Mahmoud, M., BenRejeb, I., Punja, Z.K., Buirs, L. and Jabaji, S. (2023) 'Understanding bud rot development, caused by Botrytis cinerea, on cannabis (Cannabis sativa L.) plants grown under greenhouse conditions', Botany, 101(7), pp. 200-231. Link
  • Mahr, S. (no date) Using manure in the home garden. Wisconsin Horticulture, Division of Extension, University of Wisconsin-Madison. Link
  • Maillard, A., Diquélou, S., Billard, V., Laîné, P., Garnica, M., Prudent, M., Garcia-Mina, J.M., Yvin, J.C. and Ourry, A. (2015) 'Leaf mineral nutrient remobilization during leaf senescence and modulation by nutrient deficiency', Frontiers in Plant Science, 6, 317. Link
  • Mallarino, A.P. (1995) 'Comparison of Mehlich-3, Olsen, and Bray-P1 procedures for phosphorus in calcareous soils', in Rehm, G. (ed.) Proceedings of the Twenty-Fifth North Central Extension-Industry Soil Fertility Conference, St. Louis, Missouri, 15 to 16 November 1995, Volume 11. Manhattan, Kansas: Potash & Phosphate Institute, pp. 96-101. Link
  • Marschner, P. (ed.) (2012) Marschner's Mineral Nutrition of Higher Plants, 3rd edn. London: Academic Press. Chapter 6, 'Functions of macronutrients', pp. 135-189. Link
  • Marschner, P. (ed.) (2012) Marschner's Mineral Nutrition of Higher Plants, 3rd edn. London: Academic Press. Chapter 7, 'Function of nutrients: micronutrients', pp. 191-248. Link
  • Marschner, P. (ed.) (2012) Marschner's Mineral Nutrition of Higher Plants, 3rd edn. London: Academic Press. Chapter 8, 'Beneficial elements', pp. 249-269. Link
  • McAusland, L., Vialet-Chabrand, S., Davey, P., Baker, N.R., Brendel, O. and Lawson, T. (2016) 'Effects of kinetics of light-induced stomatal responses on photosynthesis and water-use efficiency', New Phytologist, 211(4), pp. 1209-1220. Link
  • McCauley, A., Jones, C. and Jacobsen, J. (2011) Plant Nutrient Functions and Deficiency and Toxicity Symptoms. Nutrient Management Module No. 9 (4449-9), reprinted June 2011. Bozeman: Montana State University Extension. Link
  • McCauley, A., Jones, C. and Olson-Rutz, K. (2017) Soil pH and Organic Matter. Nutrient Management Module No. 8 (4449-8). Bozeman: Montana State University Extension. Link
  • McLean, E.O., Hartwig, R.C., Eckert, D.J. and Triplett, G.B. (1983) 'Basic cation saturation ratios as a basis for fertilizing and liming agronomic crops. II. Field studies', Agronomy Journal, 75(4), pp. 635-639. Link
  • Mengel, D.B. (n.d.) Fundamentals of Soil Cation Exchange Capacity (CEC). Agronomy Guide AY-238. West Lafayette, IN: Purdue University Cooperative Extension Service. (Page footer: RR 3/93.) Link
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  • Morton, J.D., Roberts, A.H.C. and Power, I.L. (eds) (2024) Sampling Pastoral, Arable and Horticultural Soils: The Principles and Practices of Soil Sampling. Wellington: Fertiliser Association of New Zealand. Link
  • Nelson, J.A. and Bugbee, B. (2015) 'Analysis of environmental effects on leaf temperature under sunlight, high pressure sodium and light emitting diodes', PLoS ONE, 10(10), e0138930. Link
  • Nelson, N.O. and Janke, R.R. (2007) 'Phosphorus sources and management in organic production systems', HortTechnology, 17(4), pp. 442-454. Link
  • Nielsen, R.L. (2022) Prevalent Purple Plants Perennially Puzzle Producers. Corny News Network, Agronomy Department, Purdue University, West Lafayette, Indiana (page dated May 2022). Link
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  • Ova, E.A., Kutman, U.B., Ozturk, L. and Cakmak, I. (2015) 'High phosphorus supply reduced zinc concentration of wheat in native soil but not in autoclaved soil or nutrient solution', Plant and Soil, 393(1-2), pp. 147-162. Link
  • Peiro, E., Pannico, A., Colleoni, S.G., Bucchieri, L., Rouphael, Y., De Pascale, S., Paradiso, R. and Gòdia, F. (2020) 'Air distribution in a fully-closed higher plant growth chamber impacts crop performance of hydroponically-grown lettuce', Frontiers in Plant Science, 11, 537. Link
  • R J Hill Laboratories (n.d.) Analysis Request Form: Compost and Media (KB item 13808, version 10). Hamilton: Hill Laboratories. Accessed 4 October 2026. Link
  • Ramezanian, A., Dahlin, A.S., Campbell, C.D., Hillier, S., Mannerstedt-Fogelfors, B. and Oborn, I. (2013) 'Addition of a volcanic rockdust to soils has no observable effects on plant yield and nutrient status or on soil microbial activity', Plant and Soil, 367(1-2), pp. 419-436. (Last author's name is spelled Öborn in the journal.) Link
  • Raviv, M., Lieth, J.H. and Bar-Tal, A. (eds) (2019) Soilless Culture: Theory and Practice, 2nd edn. Elsevier. Chapter 3, 'Physical characteristics of soilless media' (Wallach), pp. 33-112, and Chapter 9, 'Irrigation in soilless production' (Lieth and Oki), pp. 381-423. Link
  • Raviv, M., Lieth, J.H. and Bar-Tal, A. (eds) (2019) Soilless Culture: Theory and Practice, 2nd edn. Elsevier. Chapters: 'Physical Characteristics of Soilless Media' (Wallach, pp. 33-112); 'Root Zone Microbiology of Soilless Cropping Systems' (Alsanius and Wohanka, pp. 149-194); 'Irrigation in Soilless Production' (Lieth and Oki, pp. 381-423). Link
  • Reid, J.B. and Morton, J.D. (2019) Nutrient management for vegetable crops in New Zealand. 1st edn. Wellington: Horticulture New Zealand, on behalf of the Vegetable Research and Innovation Board and the Fertiliser Association of New Zealand. ISBN 978-0-473-46746-3 (PDF). Link
  • Reid, J.B. and Morton, J.D. (2019) Nutrient management for vegetable crops in New Zealand. Wellington: Horticulture New Zealand. ISBN 978-0-473-46746-3. Link
  • Resource Innovation Institute (2022) Best Practices Guide: HVAC for Controlled Environment Agriculture (CEA) Operations. June 2022. Resource Innovation Institute. Link
  • Ries, S.K., Wert, V., Sweeley, C.C. and Leavitt, R.A. (1977) 'Triacontanol: a new naturally occurring plant growth regulator', Science, 195(4284), pp. 1339-1341. Link
  • Rietra, R.P.J.J., Heinen, M., Dimkpa, C.O. and Bindraban, P.S. (2017) 'Effects of nutrient antagonism and synergism on yield and fertilizer use efficiency', Communications in Soil Science and Plant Analysis, 48(16), pp. 1895-1920. Link
  • Roberts, A. and Morton, J. (eds) (2023) Fertiliser Use on New Zealand Dairy Farms, revised edn. Wellington: Fertiliser Association of New Zealand. Link
  • Rodriguez-Morrison, V., Llewellyn, D. and Zheng, Y. (2021) 'Cannabis yield, potency, and leaf photosynthesis respond differently to increasing light levels in an indoor environment', Frontiers in Plant Science, 12, 646020. Link
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  • Saha, U.K. (2022) Cation Exchange Capacity and Base Saturation. Circular 1040. Athens, GA: University of Georgia Cooperative Extension. (Original manuscript by L.S. Sonon, D.E. Kissel and U. Saha; published with full review 8 September 2022.) Link
  • Sasse, J., Martinoia, E. and Northen, T. (2018) 'Feed your friends: do plant exudates shape the root microbiome?', Trends in Plant Science, 23(1), pp. 25-41. Link
  • Saunders, O. (2018) Guide to Using Wood Ash as an Agricultural Soil Amendment. Durham, NH: University of New Hampshire Cooperative Extension. Created May 2014, updated June 2018. Link
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