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A method for calculating the cost-saving effects of drainage on arable land

, : A method for calculating the cost-saving effects of drainage on arable land. Zeitschrift fur Kulturtechnik und Flurbereinigung 21(1): 44-54

Cost saving effects of soil drainage include facilitated tillage and an increase in the number of days on which field work can be carried out. Field working techniques may be divided into five categories according to their soil moisture requirements. The influence of drainage on each field work category was calculated.


Other references

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Romero, N.; Vendier, L.; Dinoi, C.; Etienne, M., 2014: Highly fluorinated hydrotris(indazolyl)borate calcium complexes: the structure and reactivity heavily depend on the ligand's electronic properties. Two series of highly fluorinated 3-substituted hydrotris(indazolyl)borate (Fn-Tp(4Bo,3R); R = Ph, n = 12; R = CF3, n = 21) complexes of calcium were synthesized by salt metathesis reactions. CaI2 reacts with 2 and 1 equiv. of Tl(F12-Tp(4Bo,3Ph)) i...

A.N.B.ltagiannis; K.E.P.padakis, 2011: Families of periodic orbits in the restricted four-body problem. In this paper, families of simple symmetric and non-symmetric periodic orbits in the restricted four-body problem are presented. Three bodies of masses <i>m</i><sub>1</sub>, <i>m</i><sub>2</sub> and...

Hamalainen, Matti., 2000: Risiocnemis seidenschwarzi spec. nov., an endangered damselfly from Tabunan forest in Cebu, the Philippines (Odonata: Platycnemididae). A new dragonfly species, Risiocnemis seidenschwarzi sp. nov. (holotype male: Philippines, Cebu, Tabunan. 9.ii.1999) is described, illustrated and compared with the closely related R. rolandmuelleri Hamalainen. The new species appears to be endemic...

Chung, W.Y.; Pan, D.H.; Shiau, C.Y.; Guo, W.Y.; Wang, L.W., 2001: Gamma knife radiosurgery for craniopharyngiomas. The goal of this study was to elucidate the role of gamma knife radiosurgery (GKS) and adjuvant stereotactic procedures by assessing the outcome of 31 consecutive patients harboring craniopharyngiomas treated between March 1993 and December 1999....

Egund, N., 1998: Weight-bearing radiographs with the patient standing on one leg or two. Acta Radiologica 39(6): 736-737

Keil D.J.; Mcleod M.G.; Walters D.R., 1984: Vascular flora of the arroyo de la cruz endemic area san luis obispo county california usa. American Journal of Botany 71(5 PART 2): 175-176

Clothier, Brent E., 2000: Globalisation of water management. Agricultural Water Management 45(3): 215-216, August

Miller, K.E.; Seybold, V.S., 1989: Comparison of methionine enkephalin dynorphin a and neurotensin immunoreactive neurons in the cat and rat spinal cords ii. segmental differences in the marginal zone. This study examined the number of met-enkephalin, dynorphin A 1-8, and neurotensin immunoreactive (IR) neurons in the marginal zone (lamina I) at one thoracic (T8:cat,T9:rat), one midlumbar (L5:cat,L4:rat), and one lower lumbar or sacral (S1:cat,L...

Toro, V.; Chamberlain, K., 1989: Recent work with microcomputers for census processing in developing countries. The use of microcomputers to process census data in developing countries is discussed. Specifically, the authors describe the Integrated Microcomputer Processing System (IMPS) developed by the U.S. Bureau of the Census and focus "on the recen...