Soil amendment with biochar increases maize yields in a semi-arid region by improving soil quality and root growth
Qian Xiao A B , Li-Xia Zhu A C , Hong-Pei Zhang A C , Xiu-Yun Li A C , Yu-Fang Shen A C D and Shi-Qing Li A C D
+ Author Affiliations
- Author Affiliations
A State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling 712100, China.
B College of Forestry, Northwest A & F University, Yangling 712100, China.
C College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China.
D Corresponding authors. Email: shenyufang@nwsuaf.edu.cn; sqli@ms.iswc.ac.cn
Crop and Pasture Science 67(5) 495-507 https://doi.org/10.1071/CP15351
Submitted: 17 July 2015 Accepted: 8 December 2015 Published: 31 May 2016
Abstract
Biochar has been widely proposed as a relatively novel approach to improve soil quality and increase crop productivity, but its underlying mechanisms are not well understood. A large root system in plants is either a constitutive or an inducible trait dependent on the uptake of resources and the production of shoot dry matter. Here a field experiment was conducted to investigate the effects of biochar amendment on the dynamic growth and development of maize (Zea mays L.), both above- and belowground, and to explore the relationship between soil condition, root traits and shoot biomass over two growing seasons on the Loess Plateau in northern China. Biochar was added to a maize field at rates of 0, 10, 20 and 30 t ha–1 without mulching and at rates of 0 and 20 t ha–1 with film mulching before sowing the first crop. The application of straw biochar with 30 t ha–1 decreased soil bulk density by 12% and increased soil total porosity by 13% in the 0–10-cm soil layer 6 months after biochar addition. Biochar amendment increased soil organic carbon, total soil nitrogen, carbon : nitrogen ratio, and available phosphorus and potassium at the end of each growing season. Although, root growth was inhibited at a rate of 30 t ha–1 in the early stage of the first year, biochar amendment exhibited a positive effect in other stages, resulting in higher root weight density, root length density and root surface-area density. These responses led to higher growth rates, maize biomass, grain yields and uptake of nitrogen, phosphorus and potassium as the rate of biochar addition increased. Film mulching with biochar amendment achieved the greatest root and shoot biomass and grain yield in both crops, despite differences in climate conditions. Biochar aged in the field for 2 years had the same effect on soil properties and crop production, suggesting that the application of straw biochar may be a promising option for increasing productivity in semi-arid farmland.
Additional keywords: biochar, dry matter accumulation, film mulching, nutrient levels, root traits.
References
Amonette JE, Joseph S (2009) Characteristics of biochar: microchemical properties. In ‘Biochar for environmental management science and technology’. (Eds J Lehmann, S Joseph) pp. 33–52. (Earthscan: London)Angus JF, van Herwaarden AF (2001) Increasing water use and water use efficiency in dryland wheat. Agronomy Journal 93, 290–298.
| Increasing water use and water use efficiency in dryland wheat.Crossref | GoogleScholarGoogle Scholar |
Atkinson CJ, Fitzgerald JD, Hipps NA (2010) Potential mechanisms for achieving agricultural benefits from biochar application to temperate soils: a review. Plant and Soil 337, 1–18.
| Potential mechanisms for achieving agricultural benefits from biochar application to temperate soils: a review.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXhsVWmtb3J&md5=a515ac7bda7db6fb6de5e2e7357e5096CAS |
Bao SD (1999) ‘Soil agricultural chemical analysis.’ (China Agriculture Press: Beijing) [in Chinese]
Bengough AG, Mullins CE (1990) Mechanical impedance to root growth: a review of experimental techniques and root growth responses. Journal of Soil Science 41, 341–358.
| Mechanical impedance to root growth: a review of experimental techniques and root growth responses.Crossref | GoogleScholarGoogle Scholar |
Böhm W (1979) ‘Methods of studying root systems.’ (Springer: Berlin/Heidelberg/ New York)
Borchard N, Siemens J, Ladd B, Möller A, Amelung W (2014) Application of biochars to sandy and silty soil failed to increase maize yield under common agricultural practice. Soil & Tillage Research 144, 184–194.
| Application of biochars to sandy and silty soil failed to increase maize yield under common agricultural practice.Crossref | GoogleScholarGoogle Scholar |
Bremmer JM, Mulvaney CS (1982) Nitrogen-total. In ‘Methods of soil analysis. Part 2. Chemical and microbiological properties’. (Eds AL Page, RH Miller, DR Keeney) pp. 595–624. (American Society of Agronomy, Soil Science Society of America: Madison, WI)
Bruun EW, Petersen CT, Hansen E, Holm JK, Hauggaard-Nielsen H (2014) Biochar amendment to coarse sandy subsoil improves root growth and increases water retention. Soil Use and Management 30, 109–118.
| Biochar amendment to coarse sandy subsoil improves root growth and increases water retention.Crossref | GoogleScholarGoogle Scholar |
Cayuela ML, Oenema O, Kuikman PJ, Bakker RR, Van Groenigen JW (2010) Bioenergy by-products as soil amendments? Implications for carbon sequestration and greenhouse gas emissions. Global Change Biology. Bioenergy 2, 201–213.
Chan KY, Van Zwieten L, Meszaros I, Downie A, Joseph S (2007) Agronomic values of greenwaste biochar as a soil amendment. Australian Journal of Soil Research 45, 629–634.
| Agronomic values of greenwaste biochar as a soil amendment.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXhsVamtbnM&md5=da077168ac5b4ebd8584973a4e15e465CAS |
Cheng CH, Lehmann J, Thies JE, Burton SD, Engelhard MH (2006) Oxidation of black carbon by biotic and abiotic processes. Organic Geochemistry 37, 1477–1488.
| Oxidation of black carbon by biotic and abiotic processes.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28XhtFylurbO&md5=0648958d9f2b29463f487c77f311ab21CAS |
Deenik JL, McClellan T, Uehara G, Antal MJ, Campbell S (2010) Charcoal volatile matter content influences plant growth and soil nitrogen transformations. Soil Science Society of America Journal 74, 1259–1270.
| Charcoal volatile matter content influences plant growth and soil nitrogen transformations.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXovVOjurk%3D&md5=932e8f497cbd4ca43135a0a9df11c389CAS |
Downie A, Crosky A, Munroe P (2009) Physical properties of biochar. In ‘Biochar for environmental management: science and technology’. (Eds J Lehmann, S Joseph) pp. 13–32. (Earthscan: London)
Eastman CM (2011) Soil physical characteristics of an Aeric Ochraqualf amended with biochar. Master of Science Thesis, Environment and Natural Resources, Ohio State University, Columbus, OH, USA.
Eissenstat DM (1992) Costs and benefits of constructing roots of small diameter. Journal of Plant Nutrition 15, 763–782.
| Costs and benefits of constructing roots of small diameter.Crossref | GoogleScholarGoogle Scholar |
Farrell M, Macdonald LM, Butler G, Chirino-Valle I, Condron LM (2014) Biochar and fertiliser applications influence phosphorus fractionation and wheat yield. Biology and Fertility of Soils 50, 169–178.
| Biochar and fertiliser applications influence phosphorus fractionation and wheat yield.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXjt1Gjsw%3D%3D&md5=aaf37a8cb317bab5522111360908269cCAS |
Gao YH, Xie YP, Jiang HY, Wu B, Niu JY (2014) Soil water status and root distribution across the rooting zone in maize with plastic film mulching. Field Crops Research 156, 40–47.
| Soil water status and root distribution across the rooting zone in maize with plastic film mulching.Crossref | GoogleScholarGoogle Scholar |
Gaskin JW, Speir RA, Harris K, Das KC, Lee RD, Morris LA, Fisher DS (2010) Effect of peanut hull and pine chip biochar on soil nutrients, corn nutrient status, and yield. Agronomy Journal 102, 623–633.
| Effect of peanut hull and pine chip biochar on soil nutrients, corn nutrient status, and yield.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXltVWqurY%3D&md5=f6a125c3e17263ff168017fba0914a64CAS |
Githinji L (2014) Effect of biochar application rate on soil physical and hydraulic properties of a sandy loam. Archives of Agronomy and Soil Science 60, 457–470.
| Effect of biochar application rate on soil physical and hydraulic properties of a sandy loam.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3sXhtVyktbfE&md5=463474be782844213ded3bb3272a9de9CAS |
Glaser B, Lehmann J, Zech W (2002) Ameliorating physical and chemical properties of highly weathered soils in the tropics with charcoal: a review. Biology and Fertility of Soils 35, 219–230.
| Ameliorating physical and chemical properties of highly weathered soils in the tropics with charcoal: a review.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD38Xkt1Wmsrc%3D&md5=91fbb69ff5fb1e3ee8a55b7734e29177CAS |
Gong ZT, Zhang GL, Chen ZC (2007) ‘Pedogenesis and soil taxonomy.’ (Beijing Science Press Publishing: Beijing) [in Chinese]
Guan DH, Al-Kaisi MM, Zhang YS, Duan LS, Tan WM, Zhang MC, Li ZH (2014) Tillage practices affect biomass and grain yield through regulating root growth, root-bleeding sap and nutrients uptake in summer maize. Field Crops Research 157, 89–97.
| Tillage practices affect biomass and grain yield through regulating root growth, root-bleeding sap and nutrients uptake in summer maize.Crossref | GoogleScholarGoogle Scholar |
Hammer GL, Dong ZS, McLean G, Doherty A, Messina C, Schussler J, Zinsel-meier C, Paszkiewicz S, Cooper M (2009) Can changes in canopy and/or root system architecture explain historical maize yield trends in the U.S. Field Crops Research 49, 299–312.
Hao B, Xue Q, Marek TH, Jessup KE, Hou X, Xu W, Bynum ED, Bean BW (2015) Soil water extraction, water use, and grain yield by drought-tolerant maize on the Texas High Plains. Agricultural Water Management 155, 11–21.
| Soil water extraction, water use, and grain yield by drought-tolerant maize on the Texas High Plains.Crossref | GoogleScholarGoogle Scholar |
Helmke PA, Sparks DL (1996) Lithium, sodium, potassium, rubidium, and cesium. In ‘Methods of soil analysis. Part 3. Chemical methods’. (Ed. DL Sparks) pp. 551–574. (Soil Science Society of America, Inc./American Society of Agronomy, Inc.: Madison, WI)
Jackson RB, Caldwell MM (1989) The timing and degree of root proliferation in fertile-soil microsites for three cold desert perennials. Oecologia 81, 149–153.
| The timing and degree of root proliferation in fertile-soil microsites for three cold desert perennials.Crossref | GoogleScholarGoogle Scholar |
Jeffery S, Verheijen FGA, van der Velde M, Bastos AC (2011) A quantitative review of the effects of biochar application to soils on crop productivity using meta-analysis. Agriculture, Ecosystems & Environment 144, 175–187.
| A quantitative review of the effects of biochar application to soils on crop productivity using meta-analysis.Crossref | GoogleScholarGoogle Scholar |
Joseph SD, Camps-Arbestain M, Lin Y, Munroe P, Chia CH, Hook J, van Zwieten L, Kimber S, Cowie A, Singh BP, Lehmann J, Foidl N, Smernik RJ, Amonette JE (2010) An investigation into the reactions of biochar in soil. Australian Journal of Soil Research 48, 501–515.
| An investigation into the reactions of biochar in soil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXht1Sru7bM&md5=b31adee21a458df986f701b40ca9cf11CAS |
Kolb SE, Fermanich KJ, Dornbush ME (2009) Effect of charcoal quantity on microbial biomass and activity in temperate soils. Soil Science Society of America Journal 73, 1173–1181.
| Effect of charcoal quantity on microbial biomass and activity in temperate soils.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXos1Ggs7s%3D&md5=74f1a841f856b6b78f039f7d25c10d81CAS |
Laird DA, Fleming P, Davis DD, Horton R, Wang B, Karlen DL (2010) Impact of biochar amendments on the quality of a typical midwestern agricultural soil. Geoderma 158, 443–449.
| Impact of biochar amendments on the quality of a typical midwestern agricultural soil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXhtVyjsLfO&md5=2a72c5f6e4acf2394d80570b42f91fc6CAS |
Lehmann J (2007) A handful carbon. Nature 447, 143–144.
| A handful carbon.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXltVGktbc%3D&md5=22c226459340339e89131fd76eed06ffCAS | 17495905PubMed |
Lehmann J, da Silva JP, Steiner C, Nehls T, Zech W, Glaser B (2003) Nutrient availability and leaching in an archaeological Anthrosol and a Ferralsol of the Central Amazon basin: fertilizer, manure and charcoal amendments. Plant and Soil 249, 343–357.
| Nutrient availability and leaching in an archaeological Anthrosol and a Ferralsol of the Central Amazon basin: fertilizer, manure and charcoal amendments.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3sXit1Citrc%3D&md5=360db5b244d53b9b31dbf8ea5da221aeCAS |
Lehmann J, Gaunt J, Rondon M (2006) Biol.-char sequestration in terrestrial ecosystems – a review. Mitigation and Adaptation Strategies for Global Change 11, 395–419.
| Biol.-char sequestration in terrestrial ecosystems – a review.Crossref | GoogleScholarGoogle Scholar |
Lehmann J, Rillig MC, Thies J, Masiello CA, Hockaday WC, Crowley D (2011) Biochar effects on soil biota – a review. Soil Biology & Biochemistry 43, 1812–1836.
| Biochar effects on soil biota – a review.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXhtVWrt7fI&md5=cffba521c9379c4b153c23a8ac180a38CAS |
Li FM, Wang J, Xu JZ, Xu HL (2004) Productivity and soil response to plastic film mulching durations for spring wheat on entisols in the semiarid Loess Plateau of China. Soil & Tillage Research 78, 9–20.
| Productivity and soil response to plastic film mulching durations for spring wheat on entisols in the semiarid Loess Plateau of China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2cXntlWmsw%3D%3D&md5=00e39ac51780b16a6deaf999d8bbca89CAS |
Luo YQ (1982) Talking about the plastic film mulching. China State Farms 3, 19–20. [in Chinese]
Makoto K, Tamai Y, Kim YS, Koike T (2010) Buried charcoal layer and ectomycorrhizae cooperatively promote the growth of Larix gmelinii seedlings. Plant and Soil 327, 143–152.
| Buried charcoal layer and ectomycorrhizae cooperatively promote the growth of Larix gmelinii seedlings.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXmslCrtw%3D%3D&md5=3a6c03272b799e56d6a9c82b1e22bbd3CAS |
Mebius LJ (1960) A rapid method for the determination of organic carbon in soil. Analytica Chimica Acta 22, 120–124.
| A rapid method for the determination of organic carbon in soil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaF3cXktVamsw%3D%3D&md5=e01a95205c9759c8b86a3732f7d94bc7CAS |
Nelson DW, Somers LE (1973) Determination of total nitrogen in plant material. Agronomy Journal 65, 109–112.
| Determination of total nitrogen in plant material.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaE3sXht1eisbs%3D&md5=1c7d57d62eb80b5cc690a92a8a9c4f94CAS |
Noguera D, Rondon M, Laossi K-R, Hoyos V, Lavelle P, de Carvalho MHC, Barot S (2010) Contrasted effect of biochar and earthworms on rice growth and resource allocation in different soils. Soil Biology & Biochemistry 42, 1017–1027.
| Contrasted effect of biochar and earthworms on rice growth and resource allocation in different soils.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXlvVeitb0%3D&md5=f5ee1ce5a48d638dac169acbef47c7b7CAS |
Ogawa A, Kawashima C, Yamauchi A (2005) Sugar accumulation along the seminal root axis as affected by osmotic stress in maize: a possible physiological basis for plastic lateral root development. Plant Production Science 8, 173–180.
| Sugar accumulation along the seminal root axis as affected by osmotic stress in maize: a possible physiological basis for plastic lateral root development.Crossref | GoogleScholarGoogle Scholar |
Olmo M, Alburquerque J, Barron V, del Campillo MC, Gallardo A, Fuentes M, Villar R (2014) Wheat growth and yield responses to biochar addition under Mediterranean climate conditions. Biology and Fertility of Soils 50, 1177–1187.
| Wheat growth and yield responses to biochar addition under Mediterranean climate conditions.Crossref | GoogleScholarGoogle Scholar |
Oram NJ, van de Voorde TFJ, Ouwehand GJ, Bezemer TM, Mommer L, Jeffery S, Van Groenigen JW (2014) Soil amendment with biochar increases the competitive ability of legumes via increased potassium availability. Agriculture, Ecosystems & Environment 191, 92–98.
| Soil amendment with biochar increases the competitive ability of legumes via increased potassium availability.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXmsVCntrc%3D&md5=46533647a951409cec3ec50e1f96094bCAS |
Osman KT (Ed.) (2013) Forest soils: properties and management. In ‘Physical properties of forest soils’. pp. 19–28. (Springer International Publishing: Switzerland)
Palta JA, Yang J (2014) Crop root system behaviour and yield. Field Crops Research 165, 1–4.
| Crop root system behaviour and yield.Crossref | GoogleScholarGoogle Scholar |
Pardo A, Amato M, Chiaranda FQ (2000) Relationships between soil structure, root distribution and water uptake of chickpea (Cicer arietinum L.). Plant growth and water distribution. European Journal of Agronomy 13, 39–45.
| Relationships between soil structure, root distribution and water uptake of chickpea (Cicer arietinum L.). Plant growth and water distribution.Crossref | GoogleScholarGoogle Scholar |
Passioura JB (1983) Roots and drought resistance. Agricultural Water Management 7, 265–280.
| Roots and drought resistance.Crossref | GoogleScholarGoogle Scholar |
Passioura JB (1991) Soil structure and plant growth. Australian Journal of Soil Research 29, 717–728.
| Soil structure and plant growth.Crossref | GoogleScholarGoogle Scholar |
Peng YF, Niu JF, Peng ZP, Zhang FS, Li CJ (2010) Shoot growth potential drives N uptake in maize plants and correlates with root growth in the soil. Field Crops Research 115, 85–93.
| Shoot growth potential drives N uptake in maize plants and correlates with root growth in the soil.Crossref | GoogleScholarGoogle Scholar |
Prendergast-Miller MT, Duvall M, Sohi SP (2014) Biochar-root interactions are mediated by biochar nutrient content and impacts on soil nutrient availability. European Journal of Soil Science 65, 173–185.
| Biochar-root interactions are mediated by biochar nutrient content and impacts on soil nutrient availability.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXnt1ensw%3D%3D&md5=78941ca0ab31deb6b06fabd694157d5bCAS |
Qin RJ, Stamp P, Richner W (2006) Impact of tillage on maize rooting in a Cambisol and Luvisol in Switzerland. Soil & Tillage Research 85, 50–61.
| Impact of tillage on maize rooting in a Cambisol and Luvisol in Switzerland.Crossref | GoogleScholarGoogle Scholar |
Ritchie SW, Hanway JJ, Benson GO (1992) How a corn plant develops. Special Report No. 48. Iowa State University, Cooperative Extension Service: Ames, IA, USA. Available at: www.soilcropandmore.info/crops/Corn/How-Corn-Grows/index.htm
Rosegrant MW, Cline SA (2003) Global food security: challenges and policies. Science 302, 1917–1919.
| Global food security: challenges and policies.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3sXps1amsb4%3D&md5=645d03423d37864737ada57c4c180ba7CAS | 14671289PubMed |
Soil Survey Staff (2003) ‘Keys to soil taxonomy.’ 9th edn. (Natural Resources Conservation Service, USDA: Washington, DC)
Solaiman ZM, Murphy DV, Abbott LK (2012) Biochars influence seed germination and early growth of seedlings. Plant and Soil 353, 273–287.
| Biochars influence seed germination and early growth of seedlings.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XktFOnu78%3D&md5=5b2211caece80338d59584f7f73cc523CAS |
Soon YK, Kalra YP (1995) A comparison of plant tissue digestion methods for nitrogen and phosphorus analyses. Canadian Journal of Soil Science 75, 243–245.
| A comparison of plant tissue digestion methods for nitrogen and phosphorus analyses.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK2MXntV2gsL4%3D&md5=a70c610c8bb1f93c9c4feb1389b90811CAS |
Steiner C, Teixeira WG, Lehmann J, Nehls T, Vasconcelos de Macêdo JL, Blum WEH, Zech W (2007) Long term effects of manure, charcoal and mineral fertilization on crop production and fertility on a highly weathered Central Amazonian upland soil. Plant and Soil 291, 275–290.
| Long term effects of manure, charcoal and mineral fertilization on crop production and fertility on a highly weathered Central Amazonian upland soil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXjsFygtLo%3D&md5=9c3d8a3dde2eb2bb815c353b6845edd6CAS |
Steiner C, Glaser B, Teixeira WG, Lehmann J, Blum WEH, Zech W (2008) Nitrogen retention and plant uptake on a highly weathered central Amazonian Ferralsol amended with compost and charcoal. Journal of Plant Nutrition and Soil Science 171, 893–899.
| Nitrogen retention and plant uptake on a highly weathered central Amazonian Ferralsol amended with compost and charcoal.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXot1Wi&md5=9ef8c4f3dbc0ff9a22e898d04a86809fCAS |
Tammeorg P, Simojoki A, Mäkelä P, Stoddard FL, Alakukku L, Helenius J (2014) Short-term effects of biochar on soil properties and wheat yield formation with meat bone meal and inorganic fertiliser on a boreal loamy sand. Agriculture, Ecosystems & Environment 191, 108–116.
| Short-term effects of biochar on soil properties and wheat yield formation with meat bone meal and inorganic fertiliser on a boreal loamy sand.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXislOgs7g%3D&md5=e0d9d7adb70d85c830bf2d4d32ea3725CAS |
Tilman D, Cassman KG, Matson PA, Naylor R, Polasky S (2002) Agricultural sustainability and intensive production practices. Nature 418, 671–677.
| Agricultural sustainability and intensive production practices.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD38XlvVyltb0%3D&md5=617dbed070dd872dfe65af0882c014dcCAS | 12167873PubMed |
Vaccari FP, Maienza A, Miglietta F, Baronti S, Lonardo SD, Giagnoni L, Lagomarsino A, Pozzi A, Pusceddu E, Ranieri R, Valboa G, Genesio L (2015) Biochar stimulates plant growth but not fruit yield of processing tomato in a fertile soil. Agriculture, Ecosystems & Environment 207, 163–170.
| Biochar stimulates plant growth but not fruit yield of processing tomato in a fertile soil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2MXmsFensbo%3D&md5=0110160159763e634b77aae5db482f9bCAS |
Wang H, Inukai Y, Yamauchi A (2006) Root development and nutrient uptake. Critical Reviews in Plant Sciences 25, 279–301.
| Root development and nutrient uptake.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28XmsVGqsbc%3D&md5=10c25a7a34c27d9b110d787049d15101CAS |
Wang YJ, Xie ZK, Malhi SS, Vera CL, Zhang YB, Wang JN (2009) Effects of rainfall harvesting and mulching technologies on water use efficiency and crop yield in the semi-arid Loess Plateau, China. Agricultural Water Management 96, 374–382.
| Effects of rainfall harvesting and mulching technologies on water use efficiency and crop yield in the semi-arid Loess Plateau, China.Crossref | GoogleScholarGoogle Scholar |
Wang YH, Hua WL, Zhang XL, Li LX, Kang GZ, Feng W, Zhu YJ, Wang CY, Guo TC (2014) Effects of cultivation patterns on winter wheat root growth parameters and grain yield. Field Crops Research 156, 208–218.
| Effects of cultivation patterns on winter wheat root growth parameters and grain yield.Crossref | GoogleScholarGoogle Scholar |
Watanabe GS, Olsen SR (1965) Test of an ascorbic acid method for determining phosphorus in water and NaHCO3 extracts from soil. Soil Science Society of America Journal 29, 677–678.
| Test of an ascorbic acid method for determining phosphorus in water and NaHCO3 extracts from soil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaF28XovVahsA%3D%3D&md5=ff1cf638ede65d05c80a359eb99f2d71CAS |
Xue JQ, Zhang RH, Li FY, Zhang XH (2008) Current status, problem and strategy of maize breeding in Shaanxi Province. Maize Science 16, 139–141. [in Chinese with English abstract]
Zheng H, Wang ZY, Deng X, Herbert S, Xing BS (2013) Impacts of adding biochar on nitrogen retention and bioavailability in agricultural soil. Geoderma 206, 32–39.
| Impacts of adding biochar on nitrogen retention and bioavailability in agricultural soil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3sXptVamsrk%3D&md5=99aa68402b530e381926507084e73c41CAS |
Zhou LM, Li FM, Jin SL, Song YJ (2009) How two ridges and the furrow mulched with plastic film affect soil water, soil temperature and yield of maize on the semiarid Loess Plateau of China. Field Crops Research 113, 41–47.
| How two ridges and the furrow mulched with plastic film affect soil water, soil temperature and yield of maize on the semiarid Loess Plateau of China.Crossref | GoogleScholarGoogle Scholar |
Zhou LM, Jin SL, Liu CA, Xiong YC, Si JT, Li XG, Gan YT, Li FM (2012) Ridge-furrow and plastic-mulching tillage enhances maize–soil interactions: opportunities and challenges in a semiarid agroecosystem. Field Crops Research 126, 181–188.
| Ridge-furrow and plastic-mulching tillage enhances maize–soil interactions: opportunities and challenges in a semiarid agroecosystem.Crossref | GoogleScholarGoogle Scholar |
