+ Translate

Quantitative observation on the root system of various crops growing in the field

, : Quantitative observation on the root system of various crops growing in the field. Soil Science & Plant Nutrition 36(3): 483-500

1. Rice (flooded), wheat maize, soybean, potato, and sugarbeet were grown in fields with and without nitrogen application, and various traits of the roots system were quantitatively measured at the growth stage when the root system had fully developed. 2. The total length of the whole root system per unit field area ranged from 21 (potato) to 86 (wheat) km .cntdot. m-2. The total surface area was only 22 m2 .cntdot. m-2 in potato and about 90 m2 .cntdot. m-2 in rice, wheat, and maize. The total volume was in the range of 1.8 (potato) to 13 (maize) liters .cntdot. m-2. The mean diameter was 0.56 mm in maize and 0.33-0.39 mm in the other crops. These values generally increased when nitrogen was applied. 3. The root system was shallower in rice, and deeper in maize than in the other crops. Soil depth where 90% of the roots were distributed was 23 cm in rice, 35-38 cm in potato and soybean, 48-51 cm in surgarbeet and wheat, and 59 cm in maize. 4. The root density (value of various root traits per unit soil volume) in the upper soil layers and the largest density observed among various soil positions were larger in rice and wheat, and smaller in potato and soybean. These values slightly increased when nitrogen was applied. 5. Root length, surface area, and volume per unit dry weight averaged over the whole root system were 160-460 m .cntdot. g-1, 0.28-0.56 m2 .cntdot. g-1, and 30-57 cm3 .cntdot. g-1, respectively. These values were larger in sugarbeet than in the other crops. 6. The density of various root-traits as well as the mean diameter decreased with the increase of the soil depth. The distribution pattern, however, differed among the root traits and also among the crops. The reduction rate in the soil profile was larger in rice and potato, and smaller in maize and sugarbeet.

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 002200810

DOI: 10.1080/00380768.1990.10416917

Download PDF Full Text: Quantitative observation on the root system of various crops growing in the field

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Kapoor, R.K.; Srivastava, A.K.; Misra, P.K.; Sharma, B.; Thakur, S.; Srivastava, K.I.; Singh, G.K., 1996: Perinatal mortality in urban slums in Lucknow. This study examines the nature and extent of perinatal mortality in the urban slums of Lucknow, India. A survey was conducted during 1992-93 among all mothers who had a birth during the study period and were registered in one of 25 Anganwadi cent...

Fursov, Viktor Nikolaevich., 2003: How to collect entomophagous insects collecting and preservation of Hymenoptera Parasitica Kak sobirat nasekomykh-entomofagov sbor, soderzhanie i vyvedenie paraziticheskikh pereponchatokrylykh nasekomykh. Unknown

Diganov, V. I., 1985: Criteria for evaluating the efficiency of seed production allocation. Formulae are presented for evaluating the efficiency of seed production of perennial grassland taking account of seed yield and duration and areas of production.

D.V.ta, A.; Bernardo, L.; Gargano, D.; Palermo, A.M.; Peruzzi, L.; Musacchio, A., 2009: Investigating genetic diversity and habitat dynamics in Plantago brutia (Plantaginaceae), implications for the management of narrow endemics in Mediterranean mountain pastures. Many factors have contributed to the richness of narrow endemics in the Mediterranean, including long-lasting human impact on pristine landscapes. The abandonment of traditional land-use practices is causing forest recovery throughout the Mediterr...

Ward, C., 2005: Long QT syndromes: the Irish dimension. Irish Medical Journal 98(4): 120-122

Cornu H.; Vergnaud Grazzini C.; Thomassin Bernard A., 1995: Variability of the oxygen isotopic composition of three scleractinian genera (Mayotte, Mozambique Channel). Publications du Service Geologique du Luxembourg 29: 149-150

Smith W. Everett, 1966: Chromium enrichment in hydrated iron oxide sediments, southeastern Alabama. The Journal of the Alabama Academy of Science: , Pages 130-131. 1966.

Ozer, H.; Solal Celigny, P.; Tendler, C., 1997: Integrated analysis of the safety and efficacy of concurrent therapy with rIFN-alpha and chemotherapy in follicular NHL. Blood 90(10 SUPPL 1 PART 2): 264B, Nov 15

Marucco, A.; Gazzano, E.; Ghigo, D.; Enrico, E.; Fenoglio, I., 2016: Fibrinogen enhances the inflammatory response of alveolar macrophages to TiO2, SiO2 and carbon nanomaterials. Many studies have shown that the composition of the protein corona dramatically affects the response of cells to nanomaterials (NMs). However, the role of each single protein is still largely unknown. Fibrinogen (FG), one of the most abundant plas...

Aniţă, A.; Gorgan, L.; Aniţă, Dş.; Oşlobanu, L.; Pavio, N.; Savuţa, G., 2015: Evidence of hepatitis E infection in swine and humans in the East Region of Romania. Swine hepatitis E virus (HEV) is considered to be a new zoonotic agent due to its close genomic resemblance to the human HEV. The aim of this study was to determine human HEV seroprevalence in eastern Romania and to characterize circulating swine...