Agricultural Technologies developed by Indian Agricultural Research Institute (IARI)

The Indian Agricultural Research Institute (IARI) is the country's premier national institute for agricultural research, education and extension. The institute has generated technologies, package of practices and processes for higher crop productivity.

The proponents of organic agriculture are strongly criticizing the role IARI played at the time of 'Green revolution and post Green revolution eras, when it introduced dwarf wheat and rice varieties, chemical fertilizers as necessary inputs for the responsive varieties to push up crop productivity at farmer's fields in the name of country's self sufficiency.

The criticism of the emerging group of 'Organic growers' about the present day farming as prescribed by the scientific community all over the world cannot be simply rubbed aside since they point to the unpalatable hard facts, faulty govt. policies and the resultant problems to the farmers.

The wrong policies ultimately led the nation to witness a steady negative growth in agriculture in the past decade, erosion of profits in agriculture to an unsustainable levels and above all the deterioration of the soil health due to excessive chemical use.

The primary concern of every government is to check the prices and they conveniently and purposely forgot to fix remunerative prices for the agricultural produce. Attaining country's self sufficiency in food production by robbing the hapless farmer (robbing the fruits of his labour and robbing the health of his farm soil) in the name of 'modern agricultural technology' is nothing but bringing disgrace to our nation for which we all should be feel ashamed of.

Other than the technological advancements to enhance 'Crop productivity', there are many more agricultural technologies, developed by the scientific community to bring in prosperity to the farming community.

Some of the farmer friendly technologies released by IARI are enumerated below:

Division of Genetics:

• More than 100 high yielding (?) (demerits already discussed), pest as well as disease resistant varieties of Rice and Wheat were released.

• Developed and released improved varieties for maize, chickpea, pearl millet, pigeonpea, mungbean, fieldpea, lentil and oil seed crops like Mustard.

Division of Vegetable Science:

• Developed more than 200 improved varieties of 43 vegetable crops and two dozen hybrids for commercially important vegetables like Brinjal, Bottle gourd, Bitter gourd, sponge gourd, Cucumber Etc.,

• Low cost Poly-house Technology for Raising Nursery.

• Ratooning of Brinjal.
  

Division of Fruits and Horticultural Technology:

• Varieties / Hybrids for Mango,Grape, Citrus, Papaya Etc.,

• High Density Planting technology developed for Mango, Kinnow, Guava and Papaya.
  

Division of Floriculture and Landscaping:

• Varieties developed for Marigold, French Marigold, Gladiolus, Chrysanthemum and Rose.

Division of Seed Science and Technology:

• Farmer Participatory Seed production programmes: The breeder seed of the varieties / parental lines of hybrids were provided to the farmers for production of quality seeds under regular supervision and monitoring by the scientists.

• Farmers are provided with hands on training in seed production technology and storage practices.

Centre for Protected Cultivation Technology:

• Plug tray / Protray Nursery Raising Technology for Vegetables.

• Low cost insect proof net house technology for virus free nursery raising in Vegetables.

• Plastic low tunnel technology for off season cultivation of vegetables.

• Production Technology of Tomato under Zero Energy Greenhouse.
  

With this technology, a farmer can obtain about 3.5 Kg of Tomato seeds woth Rs.70,000 from 100 Square meter area and 15 Kg of hybrid seed of Brinjal of worth Rs.60,000 from 500 Square meter area.

• Production technology of Parthenocarpic Cucumber under Zero Energy naturally ventilated Greenhouse:

Division of Entomology:

• Suggestions for effective management of insect pests in Rice, Wheat, Vegetables, pulses Etc.,
  

• Integrated Pest Management regime

• Plant based formulations

• Alternatives and supplements to agrochemicals.

Division of Agricultural Chemicals:
PUSA HYDROGEL:

This product is to enhance the crop productivity per unit area with the available water and nutrients in moisture stress areas.

• Natural polymer based. (Not Synthetic)
  
• Absorbs water 400 times of its dry weight and gradually releases the same.
• Exhibits maximum absorbency @ temperatures (40-50*C) characteristic of arid soils.
• Less affected by salts as compared to commercially available purely synthetic products.
• Low rates of soil application - 1-2 Kgs / ha for nursery horticulture crops; 5-7 Kg / ha for field crops.

Division of Plant Pathology:

• Bio-formulations for the Management of Plant Diseases.

• Biological control of Plant Pathogens.

Division of Agronomy:

• Zero-tillage Technology for Efficient Resource conservation.

• Nitrogen Economy through Summer Legumes in Cereal based Cropping Systems.

• Bed planting Technology for Enhancing Crop Productivity.

• More Rice with Less Water. (SRI - System of Rice Intensification)

Division of Agricultural Physics:

• Agromet-advisory services to the farmers. Weather based weekly advisories are released for the benefit of farmers.

Division of Microbiology:

• Research and production of bio fertilizers.

Division of Soil Science and Agricultural Chemistry:

• Soil test based balanced fertilizer recommendations for targeted yield of crops.

Division Agricultural Engineering:

• Has developed number of farm equipments and machinery for Crop production and Agro-processing to make farm operations more easy, efficient, cost effective and with considerable saving time and energy.

Pusa Agua Ferti Seed Drill (Rear View):


Pusa Agua Ferti Seed Drill (Front View):


Bund former:


Model of Laser Leveller:


Water Technology Center:
For Low Rainfall receiving Rainfed regions:

• Surface mulching

• (a) Application of Biological Mulching Material on the ground.
• (b) Plastic mulching.
• (c) Incorporation or mixing the biological materials in the soil.

• Cultivation of low water requiring crops.

For Highly Arid Rainfed Regions:

• Deep ploughing of field before monsoon.
• Marginal and peripheral bunding.
• Pot / pitcher Irrigation system.

For Very High Rainfall receiving Rainfed regions:

• Construction of Engineering structure

• (a) Ploughing against land slope

• (b) Rain water harvesting tanks / ponds and proper re-use.

• (c) Vegetative water way or Drainage channels.

• (d) Cover management.

• AFFORESTATION

Division of Plant Physiology:

• Improving the productivity by cultural / Management practices for all the crops.
• Post Harvest Management of fruits and flowers.

Dear friends,

The effort of the scientific community to reach the farming community with latest technologies is at a snails pace. It is imperative on the part of our government to augment speedy deployment and utilization of implementable technologies for the benefit of the farmers as well our Nation.

Regards,
Vishnu Sankar

High Density Planting Technology

Many farmers falsely believe (especially Mango. Kinnow and Guava growers) that 'HIGH DENSITY PLANTING TECHNOLOGY' (hereafter 'HDP') is nothing but to plant more number of trees, get yields up to 6-7 years and when the canopy of the trees in one row touches the next row thereby curtailing farming operations and reduction in yield, simply fell / uproot the trees in alternate rows and continue farming with the remaining plants.

But, the full meaning of HDP, which is one of the highly successful orchard management practices, its basic concepts and benefits should be taught to every farmer for their ultimate economic uplift.

About HDP:
It is a system in which a higher number of plants of same or different crop species is accommodated (normally dwarf varieties) within a unit area in comparison to the conventional planting density so as to obtain maximum output by utilization of land, light and externally applied inputs Viz, nutrients, water, pesticides etc.

• Semi intensive HDP system accommodates 500 -1000 trees/ha.
• Intensive HDP system accommodates 1000 -10000 trees/ha employing specialized training systems.
• Super intensive HDP system with 20,000 to 1,00,000 plants/ha require more capital to establish and is more productive and profitable, if followed scientifically.

Components of HDP:

1. Selecting dwarf scion varieties
2. Dwarfing root stocks and inter stocks
3. Proper training and pruning
4. Proper use of chemicals
5. Suitable crop management practices.

Advantages of HDP:

1. High density planted plants are precocious (showing premature development), easily manageable because of their small size.
2. They have higher yield potential with better quality produce resulting in higher returns/unit area.
3. Better utilization of solar radiation because of dense planting.
   
4. HDPT is amenable to modern input application techniques such as drip/fertigation, mechanization etc.,
5. Higher harvest index as well as early economic returns.
6. Considering the shrinking land resource, continued decline in cultivable land, rising energy cost and land costs together with the mounting demand for more agricultural produce have given us no other option than to adopt HDP.

Constraints in adoption of HDP system:

1. Non-availability of complete package for HDP system and there is no efficient extension system to disseminate the HDP knowledge to the willing farmers.
2. Non availability of planting material for dwarf varieties.
3. Non availability of vegetatively propagated root stocks in different fruit crops and plantation crops.
4. Non availability of mechanization technology for the use of in densely planted fields.
   
5. Overcrowding of trees in some orchard crops (especially in Mango) after 11-12 years.
   

Estimated cost and return from traditional and HDP in MANGO:

Sl. No.	PARTICULARS	TRADITIONAL SYSTEM	HDP SYSTEM
1	SPACING	10 m X 10 m	2.5 m X 2.5 m
2	No.OF PLANTS/ha	100	1600
3	COST OF ESTABLISHING THE ORCHARD	Rs.30,000	Rs.75,000
4	ANNUAL MAINTENANCE COST	Rs.20,000	Rs.35,000
5	AGE OF STABLE YIELD	8 to 10 years	7 to 8 years
6	PRODUCTION (kg /ha)	6000 to 8000	16,000 to 19,000
7	SALE OF PRODUCE (Rs.7 per kg - Whole sale price)	Rs.42,000 to Rs.56,000	Rs.1,12,000 to 1,33,000
8	NET RETURN	Rs.22,000 to 36,000	Rs.77,000 to 98,000

So, my dear farmer friends. before adopting HDP, acquire full knowledge in tree architecture, physiology of tree size control, development of dwarfing root stocks and about chemical growth retardants for a successful HDP farming venture.

(Source:"Improved Technologies for fruit cultivation" (TB-ICN : 63/2009) Division of Fruits and Horticultural Technology, ICAR, New Delhi 110 012)

Regards,
Vishnu Sankar

Tree felling at an alarming rate!

Dear friends,

Tree felling is made easier and easier with the advancement of technology. You will marvel at the awesome power of tree felling machines displayed at the videos given below.

But at the end of show, there will be no doubt, that you will be worried man, when the reality strikes you in the face that this kind of rapid denuding of the mother earth takes place daily with thousands of such monstrous machines.

After so many summits, meetings, speeches, agreements and disagreements, solution to this grave problem is still not yet in sight.

Mass tree planting drives with massive government funding (irrespective of GDPs and without any discrimination like developed, developing, under developed countries) all over the world will definitely minimize harmful effects of indiscriminate felling of trees.

For our part as an individual and as a responsible human being, we should act now and plant as many trees as possible to insure our mother earth's safety.

Regards,

Vishnu Sankar

Feller buncher cum cutter:



Feller buncher:

Tips to increase yield in Casuarina junghuhniana plantation:

Dear Tree growers,

Casuarina junghuhniana has become a preferred crop of farmers in South India because of its following characters:

• C. junghuhniana clones are fast growing both in coastal and inland sites.
  
• Nitrogen fixing capacity,
• shorter gestation period of only 4 years,
• good fuel wood,
  
• good value when harvested for poles,
• preferred in construction industry for scaffolding and for supporting Banana plants because of its inherent character of giving straight polls,
  
• drought tolerance capacity,
• high calorific value of wood (preferred crop for Biomass power plants),
• good pulping traits for manufacture of paper.

Before further reading, readers are requested to go through my previous posts on this subject in this link.



Tips to increase yield in Casuarina junghuhniana plantation:

(Source: "Money spinning Trees - 1, 'Casuarina junghuhniana' A Guide for cultivation' - compiled by Dr. A.Nicodemus and published by 'Institute of Forest Genetics and Tree Breeding' (IFGTB) Coimbatore - 641 002, Tamilnadu.)

The amount and quality of wood produced is determined chiefly by the variety used, site quality and cultivation practices adopted.

1. Variety selection (Seed origin):
Casuarina junghuhniana from East Timor have both male and female trees and can be easily propagated through seeds. IFGTB has introduced 6 such new varieties of C.junghuhniana from there and they showed faster growth than local Casuarina. It was found highly drought tolerant and suitable for inland areas and rainfed conditions where it recorded 36% faster growth than local Casuarina. Although it performed well in irrigated areas, the straightness of stem needs further improvement.

2. Variety selection (Clonally propagated):
Casuarina junghuhniana is a natural hybrid of Casuarina equisetifolia X Casuarina junghuhniana. Since vegetative propagation is being done normally from male plants to obtain robustness in growth, the commercially available Casuarina junghuhniana clones are male clones which will naturally produce no seeds.

Propagation is through air layering, rooted cuttings and of late reportedly by tissue culture.


3. Rejecting the weak seedlings:
Almost all the seedlings available in the local nurseries are from unknown sources and their productivity can be considerably increased by selection in the nursery.

The major reason for poor yield in bare root seedlings planted field is that only about 40% of the trees in a plantation significantly contribute to wood production. The rest are weak trees which do not produce merchantable wood.

If the seedlings do not grow uniformly in the first 6 months, weak seedlings caught between vigorously growing neighbours will not be able to grow into healthy trees. Within a year the canopy closes in and the weak trees are suppressed forever. This problem should be addressed by planting uniform sized seedlings and ensuring even growth among them especially in the first 6 months after planting.

Rejecting the weakest 25% of seedlings in the nursery stage itself can significantly increase survival and growth in the plantations.

4. Inoculation with Frankia:
Casuarina is a Nitrogen fixing tree through symbiotic relationship with an actinomycete called Frankia. It fixes atmospheric nitrogen in special structures in the roots called nodules.

Inoculation with Frankia for adequate development of root nodules in seedlings is essential for vigorous growth as well as to increase their adaptability to planting conditions.

In trial plots, Frankia inoculated plant fixed 45 g N2/yr/tree during the two first years of growth and extrapolating this result gives a figure of 90 kg of N2 fixed annually/ha at a planting density of 2,000 trees/ha.

5. Bare foot seedlings Vs Poly bag seedlings:
Growing seedlings in poly bags and root trainers is better than bare foot seedlings especially for planting in rainfed areas.


Polybags (Size: 15 x 8 cm) filled with a potting mixture of sand, farm yard manure and Soil in a ratio of 2:1:1 are suitable for raising casuarina seedlings.

6. Management if planted in clay soils:
Though Casuarina adopts well in all types of soil it is better to avoid planting them in high clay soil where it exhibits stunted growth. Before planting Casuarina in clay soils, dig pits of size 1'x1' and fill them with tank silt or red soil with good organic matter there by allowing the young plants to establish well initially.



7. Planting time:
Seedling, whether it is bare foot or poly bag raised, whether it is going to be planted in rainfed area or in wet lands, it is recommended to plant one month before the monsoon rain. This will help the plants to establish well before the arrival of monsoon and grow faster than those planted during the rain.

8. Adequate spacing determines yield:
The recommended spacing between trees and rows is generally 1 Metre for bare root seedlings of Casuarina equsetifolia (4100 plants/Acre) and 1.5 metres for Casuarina junghuhniana (1750 plants/Acre).

Farmers who cultivate Casuarina regulary know that spacing determines the girth of the planted casuarina. It is quite natural that in closely planted fields (very narrow spacing of 2.5' x 3.5' or in some cases with even lower spacings of 2' x 3') girth / Wt of individual tree obtained will be less. Adopting a row-column design (i.e 1.5 to 2m between rows and 1 to 1.5m between trees) for planting will reduce competition for light and increase nutrient uptake.


9. Casuality replacement:
Casuality replacement should be completed within one month after planting. Here too, seedlings grown in large sized polybags should be used to fill the gaps to maintain uniformity in plant size.

10. Irrigation:
Unlike other tree crops Casuarina needs regular irrigation. A well established Casuarina seedlings planted in sandy soil need watering every 8 - 10 days and if planted in clay soil, irrigation for every 15 - 20 days is enough. A notable growth and yield is noticed in drip irrigated plots.

10. Fertilizer application:
In coastal Tamilnadu and Puducherry, 150Kgs of DAP is applied per Acre at 6-12 and 18-24 months. Another recommendation is to apply 11Kg of Urea and 94 Kg of Super phosphate at 4 stages: immediately after establishment, 6, 12 and 18 months after planting.
The composition, amount and frequency of fertilizer application for Casuarina greatly varies between regions and even among farmers within the same region.
Fertilizer application ensures optimal availability of nutrients for all trees so that they can express their full potential leading to increased wood production per unit area.

11. A little trade secret to Casuarina Growers:
Moisture content (i.e. difference between green weight and dry weight) in C.junghuhniana is 84% whereas local casuarina ( C. equisetifolia) has only 62% water. A mere 5% moisture loss will bring in a catastrophic revenue loss of Rs.5,000- per acre to the farmer. So the felled woods (C.junghuhniana in particular)should be immediately sent to the market to get more weight and there by more revenue.

(For Nursery techniques, germination, transplantation, Vegetative propagation and Insect and disease management details, please refer:"Money spinning Trees - 1, 'Casuarina junghuhniana' A Guide for cultivation' - compiled by Dr. A.Nicodemus and published by 'Institute of Forest Genetics and Tree Breeding' (IFGTB) Coimbatore - 641 002, Tamilnadu.)

Regards,

Vishnu Sankar