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18
Aug

AEZ, Soils of Tamilnadu

18
Aug

Geography, Climate of Tamilnadu

Tamil Nadu is located in the Northern hemisphere in the hot zone between 80 and 13' N latitude and between 780 and 800 E longitude. It is bounded on the east by the Bay of Bengal, in the south by the Indian Ocean, in the west by the states of Kerala and Karnataka and in the north by Karnataka and Andhra Pradesh. There are five major physiographic parts including the Kurinji mountainous region, Mullai forest region, Murudham fertile plains, Neidhal coastal region and Palai arid region. The Wester
18
Aug

Tamilnadu

1. Date of formation: 15th Aug 1947 Renamed Tamil Nadu:14th Jan 1969 2. No. of districts: 31 3. Area: 1,30,058 sq km 4. Villages: 15400 5. Capital: Chennai 6. Towns: 832 7. Population: 62,405,679 8. Per capita income at current prices (2005-2006]: Rs 29,958.
12
Aug

Zinc - Deficiency Symptoms and Precautions

ZINC

Deficiency symptoms

  • Uneven field growth
  • Growth is severely affected
  • Brown blotches and Streaks appear on lower leaves
  • Induces spikelet sterility

Prescriptions

  • Soil application of Znso4 @ 25 Kg/ha
  • Foliar spray of 0.5% Znso4
12
Aug

Sulphur - Deficiency Symptoms and Precautions

SULPHUR

Deficiency symptoms

  • Yellowing of whole plants  
  • Chlorosis more pronounced in young leaves
  • Leaf necrosis may occur in young tips
  • Reduced tillering

Prescriptions

  • Foliar spray of 0.5 % S
12
Aug

Nitrogen - Deficiency Symptoms and Precautions

NITROGEN

Deficiency symptoms

  • Total chlorosis in older leaves
  • Premature leaf withering
  • Stunted growth
  • Yellowing of entire field
  • Narrow leaves

Prescriptions

  • Soil application of 25 % excess of recommended N
  • Foliar spray of 1 % Urea
12
Aug

Magnesuim - Deficiency Symptoms and Precuations

MAGNESIUM

Deficiency symptoms

  • Orange yellow interveinal chlorosis in old leaves
  • Green coloring appears as a string of beads
  • Leaves are wavy and groupy

Prescriptions

12
Aug

Potassium - Deficiency Symptoms and Precautions

POTASSIUM

Deficiency symptoms

  • Dark green plants with yellowish brown leaf margin
  • Necrotic spots appear on the tip of older leaves
  • Marginal drying
  • Yellowing stripes appear along the leaf intervenes
  • Resembles Tungro virus disease

Prescriptions

  • Soil application of 25 %
12
Aug

Copper - Deficiency Symptoms and Prescriptions

COPPER

Deficiency symptoms

  • Coppery blueish green leaf
  • Chlorotic streaks on the leaves
  • Dark brown necrotic lesions on the tip
  • Needle like appearance of leaf tip
  • Chalfy spikelets

Prescriptions

12
Aug

Calcium - Deficiency Symptoms and prescriptions

CALCIUM

Deficiency symptoms

  • Tips of the youngest leaves become chlorotic white
  • Plants are spindly and weak rooted
  • Reddish brown spot with areas of mottled green
  • Premature leaf senescence Occurs only in acid soils

Prescriptions

  • Liming of soil based on lime requirement
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