VASAT banner

** Agropedia Brouchure **       ** Workshop on vKVK and KVK-Net**      ** Workshop on Agropedia **   

drought

How drought affects livestock management?

  • Most of the farmers keep livestock to carry out the farm operations and also to supplement their food needs, in terms of milk and meat, of their families. Any excess livestock products earn extra money for them.
  • So any impact of drought on their farming activities will reflect on the management and upkeep of the livestock with them.
  • Less or no fodder  for the livestock as the crops are adversely affected by drought.
  • High cost of fodder with the reduced availability of fodder in the farms.
  • Increased expenses for transporting the fodder from neighboring areas.
  • Unavailability or high cost of water for livestock.

Drought Vulnerability Map Reading
  • This map indicates the deficit or surplus of surface water, in fulfilling the human, livestock and agriculture requirements in the event of rainfall of 200/300/400 mm.
  • It was assumed that the rain water falling over the village area is available for its use.
  • Crop, human and livestock requirements suggested by UN agencies were used in demand estimation.
  • The percentage of deficit/surplus with reference to its demand is grouped into six categories. Drought preparedness / planning measures could be initiated accordingly.
Status of Surface water in meeting the village requirements at specified mm of rainfall
vasat
@200mm
vasat
@300mm
vasat
@400mm
vasat
@500mm
vasat
@600mm
vasat
@700mm
vasat
@800mm
vasat
@900mm
Anticipated Rainfall in
Addakal region,
June 2006 - Contributed
by GATE, ICRISAT.
Map Legend
  > + 25% Adequate water availability to meet existing demand. Water conservation preferable.
  +1 to +25% Requirements could be met. No additional demand. Water conservation required.
  0 to -25% Nominal ground water supply or external supply is required. Scarcity many not be even felt.
  -26% to -50% Definite supplementary water supply augmentation warranted. Judicious ground water withdrawal.
  -51% to -75% High scarcity sufferings. Restrictions other than critical crops and drinking water on supply and usage for non-essential activities. Meticulous early warning and preparedness/crisis management strategies. Groundwater withdrawal only for drinking.
  > - 75% Highest intensity of suffering. Total dependence on assistance from external sources for food, fodder, employment etc.,
Note
  • The said information along with knowledge onsite conditions and inter-rainfall events (gaps) need to be supplemented.
  • Number of traditional tanks/cheruvus within the village boundaries can be prioritized drought proofing in minimizing the sufferings.
  • Villages closer to river can exploit dry riverbed course.
NOTE : IT IS ADVISED TO CONSULT EXPERTS FROM YOUR AREA PRIOR TO IMPLEMENTING REMEDIAL MEASURES.
Read More on VASAT Wiki

Water relations:

  • Requires considerable amount of moisture ;
  • 50-75 cm of well-distributed rain is conducive to proper growth.
  • Expends water economically and relatively drought- resisting crop;
  • After germination and up to tasseling stage crop stands less moisture;
  • Requires more moisture during reproductive period;
  • Requires less moisture when developing towards maturity.

Temperature:

  • A warm weather crop;
  • Requires a mean temperature around 22oC and night temperature above 15oC;
  • Requires considerable warmth from germination to flowering;
  • Cultivation not possible when day temperatures are less than 19oC and night temperatures during the first 3 months falls below 21oC;
  • Noon temperature above 35oC for several days destroys pollen and yields are drastically reduced.

Water relations:

  • A crop well adapted to drought-prone environments;
  • Sown mainly as a rainy-season crop, and grown through to maturity in the subsequent dry season on stored soil water;
  •  Short duration types can also be grown during summer months under irrigation.
  • Cloudy weather and excessive rainfall at flowering time damage the crop to a great extent;
  • Very susceptible to water logging. Water logging damages the root system and plants are vulnerable to attack by blight disease, and to nitrogen deficiency through the inhibition of nitrogen fixation.

Temperature:

  • A warm-season crop;
  • Growth is generally superior at warm temperatures, and poor under cooler temperatures;
  • Germinates over a relatively broad temperature range- 19-43o C. Germination will be rapid and over the range 26-43oC;
  • Rate of germination was markedly reduced below 19oC.

Water relations:

  • Low moisture requirement. Drought resistant;
  • Exceptionally high capacity for soil water uptake through their root system;
  • Become dormant during moisture stress but reverts to normalcy subsequently;
  • Pearl Millet is more drought resistant than Sorghum
  • Minimum of 28 to 35 cm of rainfall for the crop to be successful. But, can be grown in areas having an average annual rainfall between 60-100 cm.
  • From flowering to seed setting, a minimum of 2.5 mm of water per day for normal growth and 3.7 mm for higher yields is required.
  • Germination, tillering, flowering, and grain filling stages are critical periods for moisture stress.

Temperature: 

  • Requires warm conditions but it can be grown under a wide range of conditions.
  • Can tolerate high temperature throughout its life cycle better than any other crop.
  • Best yields when the mean temperature around 26 to 29oC during growing period;
  • Higher yields are rarely obtained below a mean temperature of 24oC;
  • Tolerates day temperature up to 40oC; 26-30oC temperature for the optimal growth
  • Minimum of 8 to 10oC for germination;

Seasonal loss of agricultural production due to:

  1. Droughts
  2. Floods
  3. Pest and diseases incidences.

Alternate Text

Alternate Text

Loss of future livelihood potential because of:

  1. Failure of sown crops
  2. Lack of food and feed for the proper growth of livestock

Alternate Text

Alternate Text

Pigeonpea or Red gram (Arhar) is a legume crop grown in dry lands becuase of its deep root system which can help utilizing moisture from lower depths in soil. Being a legume it can improve the soil quality by nitrogen fixation. It provides nutritious pulse to the farmers.

http://www.fao.org/WAIRDOCS/TAC/Y4953E/y4953e2h.jpg

Immediate loss of life and infrastructure :

  1. Death of livestock due to droughts
  2. Loss of household property due to cyclones
  3. Damage to physical infrastructure due to floods.

Alternate Text

Alternate Text

High societal costs for disaster response by way of

  • Rebuilding of living and other physical infrastructures
  • Governmental programs to assist the farmers for crop losses

Alternate Text

Alternate Text

Information about daily, seasonal and annual variations is important for researchers, extension workers, farmers, and policy makers.

Year Month Rain (In mm) Evap(In mm)
2003 1 0 153.79
2003 2 0.4 205.29
2003 3 10.8 285.69
2003 4 27.79 330.2
2003 5 0 453.4
2003 6 38.99 332.6
2003 7 288.5 162.7
2003 8 355.69 119.79
2003 9 105.29 134.2
2003 10 98.59 120.89
2003 11 0 126.9
2003 12 0 131.19

Such variations play a vital role in crop responses and survival. Understanding the relationships between weather and crop production is essential step for designing the strategies to improve the crop production.

Alternate Text

Alternate Text

Mitigation means actions that we can take before or at the beginning of drought to help reduce the impacts of drought. Mitigating drought involves a wide range of agricultural practices including finding additional water supplies and conserving water that is already available.

However, it is not enought to make drought plans based only on agricultural practices. There are many other strategies at government level that are just as important.

It is important to reliazethat we will not be able to defend drought overnight. Some of these strategies will take time to implement an d to see the result. We continually need to plan and to follow the plans in order to prevent drought from having devastating impact on life.

Strategies for mitigating drought :

The Crop based strategies for mitigating drought are:

  • Land planning system
  • Soil management techniques
  • Crop management techniques
  • Integrated watershed management
  • Other water management technique
  • Other practices

Land planning systems:

Some lands can only sustain limited cultivation because they are prone to drought. These are best used for alternate uses rather than normal food grain crops. Land-use systems give stability to dry land production systems and also make good use of the land and rainfall during the off-season.

Some exampls of alternate crops you can grow are:

  • Growing of short duration legume crops.
  • Establishing perennial grasses for livestock farming.
  • Agroforestry or silvipasture practices.

Soil management techniques:

  • Tillage during the off-season or in pre-rainy season, helps with rain water intake by breaking the hard soil and making the soil surface more permeable.
  • This allows water to seep to the deeper soil layers and keeps the soil wet for longer time.
  • The result is the soil will have more moisture during sowing the crop.
  • Tillage also controls weeds which deplets the soil moisture.
  • Offf-season tillage also destroyes the effs, cocoons and larvae of some pests by exposing them to the sun which otherwise affect the already stressed crop plants.

Crop management techniques:

Selection of Crops:

  • Avoid growing of drought prone crops like maize, cotton etc.
  • Growing drought resistant grain crops like sorghum, pearl millet, finger millet, fox tail millet etc.
  • Growing drought resistant legume crops like pigeonpea, green gram, horse gram etc.
  • Growing of oil seed crops like castor, sunflower, niger, sesame, safflower etc.

Crops like maize and cotton require assured rainfall even for giving normal yield. These crops have no capcity to recover from any moisture stress during their growing period. These crops also require higher nutrient application which means more monetary losses for the crop failure during dorught.

Alternate Text

Sorghum is a good crop to grow in drought prone areas as it needs less water. It also provides grain for the family and fodder to the cattle. The crop also recovers fast from drought stress.

Figure: Sorghum Crop

Alternate Text

Alternate Text

Pearl millet is another good crop for drought prone aras. This crop requires less water than even sorghum. Pearl millet also provides grain as well as fodder.

Figure: Pearl millet crop

Pigeonpea or Red gram (Arhar) is a legume crop grown in dry lands becuase of its deep root system which can help utilizing moisture from lower depths in soil. Being a legume it can improve the soil quality by nitrogen fixation. It provides nutritious pulse to the farmers.

http://www.fao.org/WAIRDOCS/TAC/Y4953E/y4953e2h.jpg

Using legumes :

Legumes like green gram, cowpea, horse gram etc. are also good choice of crops under limited moisture conditions. So, these crops suit well under drought conditions. These crops also provide nutritious pulse and also fodder for the cattle.

Alternate Text

Selection of Oil seeds:

Oil seed crops like niger, sesame, safflower also can be grown under drought conditions.

Alternate Text

Alternate Text

Niger Crop

Sesame Crop

Intercropping practices:

Intercropping refers to growing more than one crop in the same land area in rows of definite proportion and pattern. Intercropping system provides insurance against total crop failure in dorught prone areas.

A few examples of suitable intercropping systems under drought are:

  • Sorghum and Pigeonpea
  • Pearl millet and Pigeonpea
  • Pearl millet and Cowpea
  • Sunflower and Horsegram

Plant Density:

  • It is important to keep optimum plant population and row spacing. Generally wider plant spacing is preferred in drought prone areas.
  • You must careful not to space the plants too widely. This will not use available soil moisture to the capacity.
  • Remember that more plants do not necessarily means more yield. In dry lands more health plants needed for better yield.

Weed management :

  • Weeds compete with crops for soil moisture and nutrients.
  • Weeds also hosts some pests and diseases and these will migrate and affect the crops which are already under stress under drought conditions.

So, good weeed control from the early stages of crops is essential in drought areas.

Surface Mulching:

Surface mulching either by timely intercultivation or by covering the soil surface with plant residues benefits the crops

  • Reduce water evaporation from soil
  • Reduces water runoffs from the cropped fields.
  • Help control weeds.
  • Adds organic matter to the soil and imporves soil quality.

Integrated Nutrient Management (INM)

INM takes care of physical, chemical and biological needs of the soil. It meets the nutrient needs of the soil from the use of organic and inorganic fertilizers.

Benefits of INM:

  • Increases water holding capacity of the soil.
  • Increases the amount of nutrients in the soil.
  • Make the soil more resistant to diseases.
  • Make the soil better able to withstand drought.

Integrated Water Management (IWM):

IWM is the efficient way to continually manage land and water resouces in the drought prone areas. The focus of IWM is conservation and efficient way of using rain water. IWM combines several appraoaches to minimize the risk of drought.

These approaches are

  • Soil and water conservation
  • Rain water harvesting
  • Efficient land and crop management

Other Water management techniques:

Every drop of water will make a difference during drought and so efficient conservation of rain water is key to mitigate drought. The different methods of conserving water are

  • Building masonry storage tanks and broken embankments in community ponds and reservoirs
  • Building earth percolation ponds and reservoirs
  • Desilting all water storage structures.
  • Building check dams.
  • Rooftop rain water harvesting.

Drought is a common occurrence in India. So, it is important that we are prepared to face this inevitable natural hazard. The most important myth concerning droughts is that nothing can be done to prevent htem or to respond effectively once they have started.

In fact, small-scale measures can have a significant impact and with proper forethought the ravaging effect of droughts can often be substantially reduced. Being prepared for what may happen in the future makes oneself reliant.

When we react to drought only in the "crisis mode", or as an emergency situation, we are not able to be self sufficient. Planning ahed to mitiage drought gives farmers and decision makers the chance to relieve the most suffering at the least expense.

So, we should have plans in place before a drought begins. A plan that has strategies and tactics for before drought, during drought and after drought is essential. Drought planning can be done at farmers, village, region, State and at the Country levels.

Planning for drought is essential, but it may not come easily. There are many constrains to drought relief planning. One of the major impediments to drought relief planning is its cost. Officials may find it difficult to justify the costs of a plan, which are immediate and fixed. But studies have shown that crisis-oriented drought response efforts have been largely ineffective, poorly coordinated, untimely and inefficient in terms of the resources allocated.

Drought planning at farmers and community level is not cost intensive. We should plan for what to do during drought and also how to recover from it. It is best to involve everyone who is affected in the planning process, including farmer families and farm workers.

Impact of drought can be mitigated through a number of good agricultural practices. For drought planning farmers should be aware of such practices to overcome from the risk from drought.

1.How much warning time do we have that an event will occur?

  • Drought: Up to a year, but often no warning at all.
  • Flood: from seconds to months
  • Earthquake: Difficult to predict.

2.How long do the events last?

  • Drought: months, years or decades
  • Flood: from hours to weeks
  • Earthquake: months

3.How often do the events occur?

  • Drought: Each year, some part or other of the country has severe or extreme drought
  • Flood: 2 out of 3 years mostly in northeast part of the country
  • Earthquake: Not very frequently.

4.How many fatalities do this disaster usually cause every year?

  • Drought: Rarely a direct cause of death. But, stress associated with drought events may contribute to some deaths.
  • Flood: Causes few hundreads of death.
  • Earthquake: For example, in lature district, maharastra, 7,928 people were killed in septemeber 1993

5.What are the average annual costs of this diaster?

  • Drought: For example, regarding Maharashtra, the prime minister said that for 2003-04 the total assistance given to the state amounted to 700 crores.
  • Flood: For example, Bihar state's official records reveal that Rs. 30 Crore was sanctioned for the purchase of food grain to be doled out to 2.11 crore people across 20 flooded districts.

 

  • Decreased availability of qulaity drinking water.
  • Institutional restraints on water use
  • Increased conflicts on water use
  • cost of water transport or transfer
  • Cost of new or supplemental water resources
  • Reduced availability of food and food products
  • Food shortages
  • Increased expenses towards food
  • Increased poverty in general.
  • Reduced quality of life, changes in lifestyle in rural areas and in specific urban areas
  • Reduction in nutrition
  • Health related problems
  • Mental and Physical stress (e.g. anxiety, depression, loss of security etc.,)
  • Loss of human life
  • Higher unemployment rates
  • Migration of people from rural to urban areas.
  • Political conflicts
  • Public dissatisfaction with government drought response
  • Perceptions of inequity in relief, possibly related to socio-economic status, ethnicity etc.,