Jadam organic Farming & Gardening : The Way to Ultra-Low-Cost Agriculture, Make All-Natural Fertilizer, Pesticide and Microorganism Inputs Yourself


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JADAM Organic Farming The way to Ultra-Low-Cost agriculture - PDF Room

Manganese (Mn)
In the form of Mn
2+
, it activates a few enzymes in plant cells. Decarboxylase
and dehydrogenase included in the tricarboxylic acid cycle (TCA cycle) are
speciically activated by manganese. It plays an important role in photosyn-
thetic reaction that generates oxygen in water. If it is deicient, small
necrotic spots develop and necrosis occurs between veins of leaves.
Chlorine (CI)
In the form of CI
-
, it is needed for division of water during oxygen genera-
tion in the process of photosynthesis. It is also necessary for cell division in
leaves and roots. In plants with too little chlorine, the leaves become with-
ered at the end, chlorosis or necrosis occurs in leaves or leaves turn bronze
in color due to growth delay. Chlorine ions dissolve very easily in water and
they can be easily used in soil as wind brings it from seawater – making
chlorine deiciency rare.
Sodium (Na)
In the form of Na
+
, it is needed for most of the species that ix carbon. Its
deiciency causes chlorosis or necrosis or prevents lowering. It stimulates
growth through cell expansion and substitutes potassium, a solute with par-
tially osmotic activation. 
Iron (Fe)
Iron plays an important role in components of enzymes participating in ox-
idation-reduction reactions. During electron transport, iron is reversibly ox-
idized from Fe
2+
to Fe
3+
. As with magnesium, its deiciency causes chlorosis
between veins of leaves. is symptom begins with young leaves because
iron cannot easily transfer from old leaves. Severe deiciency causes entire
leaves to turn white.
ULC영어본문.qxp_레이아웃 1 2016. 2. 19. 오후 6:44 페이지 220


Making Organic Farming Inputs

221
Zinc (Zn)
Zinc is needed to activate various enzymes and synthesize chlorophyll in
the form of Zn
2+
. If it is deicient, intercalary growth is decreased, causing
leaves to stick to the ground. Leaves are small and their margins shrink,
showing deformation. ese symptoms occur because auxin indole acid
cannot be sufficiently produced. In corns and beans, chlorosis occurs be-
tween veins of old leaves. White necrotic spots also appear. is chlorosis
shows zinc is necessary for production of chlorophyll. 

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