Plastic Lining for Water Storage Structures

Rainfall is the most important water resource, therefore, rainwater harvesting and its efficient utilization could be a viable alternative for successful farming in rain-fed areas of the country.

Seepage losses could be as high as 55L/m2/day in sandy/sandy loam soils which means harvested water could be lost within 1-2 months of rain. Therefore lining of pond is very much essential to retain water during dry period ie. Nov through March for winter cropping. Lets look at economics. Cost includes land preparation,digging and lining.

Concrete Rs 4- 5/ltr
Brick Masonary Rs 3-4/ltr
Clay(partial seepage) Rs 0.05/ltr
Plastic Film Rs 0.20/ltr

Below bulletin encompasses useful information on farm pond planning, design, construction on one hand and mode of lining, research findings on plastic lining and methods of lying LDPE film on the other hand.

http://www.dwm.res.in/pdf/Bulletin_50.pdf

Cold Storage & Elecricity Consumption

I was searching on cold storage power consumption so that I can try to couple solar power production with power hungry cold storage facility. 1MWhr =1000 units/hr * 8 hrs of sunny day =8000 units/day. But looking at 5000 MT cold store facility,it consumes about 2500 units/day * Rs 5/unit  ,about 45L EB bill per year. We can reduce 50% of it by going for <0.5MW capacity solar arrays. Of course nighttime power sourcing on-grid would be a challenge in states with power shortages unless we go for diesel powered generators.

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CCYQFjAA&url=http%3A%2F%2Fnhb.gov.in%2Fdoc%2FList%2520of%2520Electricity%2520Consumption.xls&ei=jWBHU-zmKszKsQTY8IDICA&usg=AFQjCNEJCxNqy-zIHy_4mryMvL8Vp7KQAA&bvm=bv.64542518,d.cWc

 

 

Total Growing Period & Water Requirement(Flood Irrigation)

INDICATIVE VALUES OF THE TOTAL GROWING PERIOD

Crop

Total growing period (days)

Crop

Total growing period (days)

Alfalfa

100-365

Millet

105-140

Banana

300-365

Onion green

70-95

Barley/Oats/Wheat

120-150

Onion dry

150-210

Bean green

75-90

Peanut/Groundnut

130-140

Bean dry

95-110

Pea

90-100

Cabbage

120-140

Pepper

120-210

Carrot

100-150

Potato

105-145

Citrus

240-365

Radish

35-45

Cotton

180-195

Rice

90-150

Cucumber

105-130

Sorghum

120-130

Eggplant

130-140

Soybean

135-150

Flax

150-220

Spinach

60-100

Grain/small

150-165.

Squash

95-120

Lentil

150-170

Sugarbeet

160-230

Lettuce

75-140

Sugarcane

270-365

Maize sweet

80-110

Sunflower

125-130

Maize grain

125-180

Tobacco

130-160

Melon

120-160

Tomato

135-180

Irrigation requirement of some common crops grown in India

rop

Growing Period           ( No. of days )

Total Water Requirement

Daily Water Requirement

in cm

in inches

in cm

in inches

Jawar

114

64.25

25.70

0.575

0.23

Maize

100

44.50

17.80

0.450

0.18

Rice

93

104.50

41.80

1.075

0.43

Wheat

88

37.00

14.80

0.425

0.17

Groundnut

124

65.25

26.10

0.525

0.21

Linseed

88

31.71

12.68

0.350

0.14

Cotton

202

105.50

42.20

0.525

0.21

Sugarcane

365

237.50

95.00

0.650

0.26

Tobacco

132

98.00

39.20

0.750

0.30

Onion

120

75.00

30.00

0.625

0.25

Potato

88

30.00

12.00

0.750

0.30

Pea

88

30.00

12.00

0.350

0.14

Mustard

88

25.20

10.08

0.300

0.12

Barley

88

25.20

10.08

0.400

0.16

Oat

88

36.00

14.40

0.400

0.16

Ragi

127

74.50

29.80

0.575

0.23

100yrs of Rainfall data at District level

If you are buying a land and wanted know how much rainfall will be there in any given month/year historically,you can get them from below links. Apparently data was obtained from Govt using great tool called RTI and made available for public for Free!!!

  • 1901-2001 –>http://indiawaterportal.org/met_data/
  • 2004-2010 –>http://www.indiawaterportal.org/articles/district-wise-monthly-rainfall-data-2004-2010-list-raingauge-stations-india-meteorological

This has helped me to predict Rain water harvesting/recharge potential in our farm(using calculator–>RWH menu)