Potassium Research and Agricultural Production - The International ...

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N ... '" 7. Lower Amazon and J lower Orinoco basins 8. Chaeo lowlands 2 9. Upper Paraguay 24 basin and pampean and patogonian lowlands 10. Tropical coastal 2 lowlands 1 Large variations within region. Hot and humid Hydromorphic, latosubhumid so\s, podzolic Arid to semiarid 'Solonetzoid red ish chestnut' planosols Subtropical to Brunizem, grumusol. tropical alluvial. humicgley, solonetz Equatorial Regosol, hydromorphic Tropical rain forest Subsistence farming, See 6 to savannah spices, rubber grassland Thorny woodland Pasture Low to high. to desert Medium 10 high pH. Low leaching. Pastures to thorny Sugar cane, cotton, Low to high. woodland citrus. pastures, Medium to high pH. wheat Low to medium leaching. Responses to: N. P. K. Swamps, savannah Sugar cane, rice, Low 10 medium. tropical rainforest coffee, bananas Low to medium pH. High leaching. Responses to: P, N. K. limestone.
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Potassium Research and Agricultural
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Chaudet, P. 1st Working Session SOD
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Drouineau, G. Mathieu, M. Mafavofta
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Chairman: Co-ordinator: 1 si Workin
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of the agricultural wage-earners wa
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for certain industrial crops a mino
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expected to produce fertilizer type
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Organization and Achievements of Ag
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Research expenses are distributed a
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vigorously cultivated. The intensiv
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It became clear that in Congresses
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this balancing effect. On the other
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problems were studied by field and
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There is need to relate fertiliser
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Increase in the fertilisers used in
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are easier to use than three separa
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of workers, preferably associated b
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Chairman: Co-ordinator: 2 nd Workin
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Accordingly, K release increases fr
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ways satisfactory. If the greater p
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The Use of Reagents Containing Sodi
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tiated by the cultivation practices
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terial being an eruptive or crystal
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G. Dut/lion, C. and Grosman, Ruth:
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Potassium Fixation and Assessment o
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The quantitative and qualitative di
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Table 6. Average dry matter yield i
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tons in 1960 in Hungary. Rapidly in
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Bibliography I. KOIak. M.: Study of
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Interaction of Potassium, Magnesium
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3.3. Influence 0/ K, Alg alld Ca do
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Table 8. (Lehmann. Malysirlk (15])
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the magnitude of these reserves may
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than a plant rich ill carbohydrates
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form. Up to now wc do not know of o
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Improvement of potassium nutrition
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ATP Synthesis and Assimilate Transp
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38 36 32 30 28 26 r Fig. J. x y •
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Potassium and the Nutritive Balance
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account of the unfavourable results
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thorough understanding of the funct
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Table 4. Nand K contents in milligr
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In our view the fact that the K ion
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[29]), suggesting that the K defici
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eral sites permitting hydrogen-bond
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Ions may be appreciably retransloca
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would suggest that translocation is
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Absorption and Lateral Transport of
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cells and intracellular ,K+ activit
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a value between the optimum and 1.0
Page 232 and 233: the optimum (2.34%). Leaves affecte
Page 234 and 235: !, 42 0,2u QII: laD l,Ra VfMl /91a
Page 237: During the course of the years as t
Page 240 and 241: Or. A. Vakhimstrov pointed out the
Page 242 and 243: Summary Assessment of Potassium Fer
Page 245: population the same imbalanced situ
Page 249: Table 6. Responses of rice in soil
Page 253: Table 10. Effect of potassium on th
Page 259 and 260: 12. Groundnut Groundnut is generall
Page 261: Such a heavy production per hectare
Page 266 and 267: sic primary minerals such as felspa
Page 268 and 269: tween yield and K content of leaves
Page 270 and 271: soils cannot therefore give any val
Page 272 and 273: Summary Recent Developments of K Fe
Page 274 and 275: 5 FiK. 1. Soil regions of Latin Ame
Page 278: 2.4. Main barriers for better utili
Page 281: Table 2-5. A summary of results of
Page 287: Table 3-4. Estimate of the rertilis
Page 293: Table I. The Phases or Land Cultiva
Page 296 and 297: Table 3. (a) Approximate nutrient r
Page 298: Table 6. Changes in Ihe soil after
Page 301 and 302: soil when a woody natural fallow is
Page 304 and 305: 25. Nye, P. H. and Slephens, D.: 'S
Page 306 and 307: on the part of farmers involved in
Page 308 and 309: The usually marked deficiency of P
Page 310 and 311: Potassium and the Environment A. Do
Page 312 and 313: Application of Plant Nutrients Base
Page 314 and 315: I. taken up by the crop 2. forming
Page 316 and 317: tassium is being increasingly used
Page 320 and 321: With the bigger crops obtained from
Page 323 and 324: A few analyses from fields on Askov
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tention to the animal manure, which
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38. Del's, W. B.: Die Bestimmung de
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potash in this manner on loess soil
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