cover image: The Tropical Agriculturist. The Agricultural Journal of Ceylon  February  1929

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The Tropical Agriculturist. The Agricultural Journal of Ceylon February 1929

1929

The question of soil improvement however is an entirely different problem and generally consists in growing one of the erect types of cover plants with the object of digging the fresh prunings or in some cases the whole plant into the soil thus enriching the latter by the addition of large quantities of organic matter. [...] (5) The protection of the soil and of the roots of crops from the excessive heat of the sun. [...] The question of nitrogen fixation by leguminous plants by means of the nodules on their roots is probably of much less importance than the beneficial effect of decaying plant residues added to the soil by periodically turning the cover plant into the land more particularly so in the case of soil deficient in organic matter. [...] This is an entirely erroneous idea and may possibly have originated from the fact that the surface of the soil beneath a low-growing cover crop is always moist owing to the fact that the cover plant prevents the drying of the surface layer of soil by evaporation. [...] When the green material is turned into the soil it not only increases the amount of humus but in the process of decomposition has the effect of liberating the dormant mineral constituents of plant food such as phosphoric acid and potash already present in the soil and rendering them more readily available for the main crop.
agriculture environment
Pages
63
Published in
Sri Lanka
SARF Document ID
sarf.120021
Segment Pages Author Actions
Soil Erosion
65-66 unknown view
Prevention of Soil Erosion in New Clearings
67-i C.C.Du Moore view
Experiments With Limes (Citrus Medical.Var Acida)in The North Central Province
69-76 H.A. Deutrom view
Cover Crops and Green Manures
77-91 unknown view
Some Considerations on Silt-Pitting
92-97 unknown view
The Empire Marketing Board-Establishment of the Board and of the Empire Marketing Grant
98-102 unknown view
Fruit Growing
103-108 unknown view
Banana Cultivation in Palestine
109-109 unknown view
Excelsa Coffee
110-112 unknown view
Meetings Conferences Etc-Board of Agriculture-Estates Products Committee
113-115 T.H. Holland view
The Tea Research Institute of Ceylon
116-116 unknown view
Report on Kapok from Ceylon
117-118 unknown view
Report by the Imperial Institute Advisory Committee on Silk Production
119-120 Norton Breton view
Plantain Garden Competition Galboda-Kinigoda Korales 1927-1928
121-121 unknown view
Reviews
122-122 unknown view
International Institute of Agriculture-International Yearbook of Agricultural Statistics 1927-28
123-124 unknown view

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