Organic Management
An Integrated approach
Growing Crops under Organic Management
Philosophy - Organic farming management is an integrated approach, where all
aspects of farming systems are interlinked with each other and work for each other.
A healthy biologically active soil is the source of crop nutrition, on-farm biodiversity
controls pests, crop rotation and multiple cropping maintains the system’s health
and on-farm resource management with integration of cattle ensure productivity
and sustainability. Organic management stresses on optimization of resource use
and productivity, rather than maximization of productivity and over-exploitation of
resources on the cost of resources meant for future generations.
Management Principals - A living soil is the basis of organic farming. A live,
healthy soil with proper cropping patterns, crop residue management and effective
crop rotation can sustain optimum productivity over the years, without any loss infertility. Organic farming envisages a comprehensive management approach to
improve soil health, the ecosystem of the region and the quality of produce. It
includes all agricultural systems that promote environmentally sound production of
food and fibers. These systems take local soil fertility as a key to successful
production, by respecting the natural capacity of plants, animals and the
landscape; they aim to optimize quality in all aspects of agriculture and the environment. A living soil can be maintained by continuous incorporation of crop
and weed biomass, use of animal dung, urine-based manures (FYM, NADEP,
vermicompost), biofertilizers and bio-enhancers, special liquid formulations (like
vermi, compost tea etc) during a crop’s duration.
As a thumb rule, crop residues should be returned to the plot, directly or indirectly.
Cattle droppings may be returned to the field as compost. As a strategy, the
quantity of biomass removed for human food and fiber, cattle feed or firewood from
an organic farm should be replaced with any other bio-waste on the farm. But it is
important to account for it for preparing the balance sheet of nutrients for each crop
being cultivated on the farm. In phosphorous-deficient and acidic soils, some
quantity of mineral grade rock phosphate and lime can also be added either by
direct application to the field or through addition to compost. The compost can be
further enriched by the incorporation of biofertilizers, microbial inoculants, etc. Special
composts like biodynamic compost, cowpat pit compost, biodynamic preparations
such as BD-500 and BD-501, special formulations like Panchgavya, Dashgavya,
Biosol etc are also useful and ensure optimum productivity. Use of EM formulation
has also been found effective in soil enrichment and compost making. For high
nutrient demanding crops and for intermittent soil enrichment use of oilcake,
poultry manure, concentrated manures (a mixture of oil cakes, poultry manure and
rock phosphate) can also be an ideal low-cost option of manuring.
Important steps
While turning towards organic it is essential that the basic requirements of the
system and the area are properly understood and long term strategies are
addressed first. In most part of the country, poor soil health due to loss of organic
matter and soil microbial load is a major problem. Reducing water availability and the increasing temperature is further adding to the problems. Too much dependence
on the market for the supply of inputs and energy has made the agriculture a cost-intensive
high input enterprise with diminishing returns. We need to address all these
concerns and develop a system that is not only productive and low cost but also
resource-conserving and sustainable for centuries to come. To start with, the following
parameters need to be addressed in first stage
• Enrichment of soil
• Management of temperature
• Conservation of rainwater
• Maximum harvesting of sun energy
• Self-reliance in inputs
• Maintenance of natural cycles and life forms
• Integration of animals
• Maximum reliance on renewable energy sources, such as solar power and
animal power
How to achieve
1. Enrichment of soil –
Abandon use of chemicals, use crop residue as mulch,
use organic and biological fertilizers, adopt crop rotation and multiple cropping,
avoid excessive tilling and keep soil covered with green cover or biological
mulch.
2. Management of temperature - Keep soil covered, Plant trees and bushes on
bund
3. Conservation of soil and rainwater – Dig percolation tanks, maintain contour
bunds in sloppy land & adopt contour row cultivation, dig farm ponds, maintain
low height plantation on bunds.
4. Harvesting of sun energy – Maintain green stand throughout the year through a combination of different crops and plantation schedules.
5. Self-reliance in inputs – develop your own seed, on-farm production of
compost, vermicompost, vermiwash, liquid manures and botanical extracts.
6. Maintenance of life forms – Develop habitat for the sustenance of life forms,
never use pesticides and create enough diversity.
7. Integration of animals – Animals are important components of organic
management and not only provide animal products but also provide enough
dung and urine for use in soil.
8. Use of renewable energy – Use solar energy, bio-gas and bullock driven
pumps, generator and other machines.
Developing organic farm
As organic management is an integrated approach, manipulation and adoption of
one or few steps may not yield significant results. For optimization of productivity
all the essential components need to be developed in a systematic manner. These
steps include: (i) Habitat development, (ii) on-farm facilities for input production (iii) cropping sequence and combination planning, (iv) 3-4 year rotation plan and (vi)
growing of crops suiting to the region, soil and climate.
Development of farm facilities and habitat
Infrastructure –
Reserve 3-5% of farm space for utilities, such as space for cattle,
vermicompost bed, compost tank, Vermiwash/ compost tea unit etc. 5-7 trees
should be planted only on this space, as all utility infrastructure need shade.
Irrigation well, water pumping infrastructure etc can also be in this utility area. Dig
some percolation tanks (7x3x3mt or of any other size depending upon the rainfall
and run-off pattern) for rainwater conservation (1 pit per ha) at appropriate places
depending upon slope and water flow. If possible develop a farm pond of preferably
20x10 mt size. Keep few 200 lit tanks (1 per acre) for liquid manure preparation
and few containers for botanicals. For 5 acre farm, develop 1-2 vermicompost
beds, 1 NADEP tank, 2 biodynamic compost beds, 2-3 compost tea/ vermiwash
units, 5 liquid manure tanks, five cowpat pits and one underground cattle-urine
collection tank. Efforts should also be made to produce sufficient quantities of BD500 (cow horn manure) and BD-501 (cow horn silica). 10-12 horn products are
sufficient for 5 acre farm. Use of biodynamic compost prepared with the use of BD502-507 has also been found to be very effective.
Habitat and biodiversity- Management of appropriate habitat for the sustenance
of different life forms is an essential component of organic farming. This can be
achieved by ensuring crop diversity and by maintaining a wide variety of trees and
bushes as per climatic suitability. These trees and bushes will not only ensure the
nutrients from air and deep soil layers to the surface layer but also attract the birds
and predators, friendly insects and also provide the food and shelter. There may
be some loss of productivity due to shading effect but that loss can be
compensated with reduced pest problems and natural biological pest control
system. In the plains, for a 10-acre farm, plant at least five to six neem trees
(Azadirachta indica), one to two tamarind (Tamarindus indica), two gular (Ficus
glumerata), eight to ten ber (Zizyphus Sp) bushes, one to two aonla (Emblica
officinalis), one to two drumstick and 10–15 wild bushes.
More specifically, if we classify areas into wet and dry farms, then on the wet farms
there should be five to six neem trees, one to two wood apples, one to two star
fruit, eight to ten guava or sour soap, three to four drumstick, one to two fig and
10–15 bushes of mulberry, star gooseberry, curry leaf etc, and on the dry farms
there must be at least five to six neem, one to two bael fruit, eight to ten ber or
custard apple, one to two aonla , one to two drumstick and 10–15 bushes of sasaka
, nirgundi (Vitex negundo), Cassia auriculata, C. tora, etc.
In hilly areas, Alnus nepalensis is considered to be a wonderful tree as it fixes good
amount of nitrogen. It is being promoted in a cropping system mode particularly in
northeastern India. Bushes of Prunus, oak (Quercus glauca), Pinus species along
the farm boundary and yarrow (Achillea millifolium), buckwheat (Fagopyrum
esculentum), lupin (Lupinus sativus), Himalayan stinging nettle (Urtica parviflora),
marigold, etc., in between the plots invite a lot of predators and also attract a large a number of pests. Fruit orchards also need to maintain adequate diversity with at least 3-5 types of
fruit plants and few non-fruit trees (as listed above).
Major and minor plots should be separated by bunds about 1.5m wide and should
be planted with Glyricidia, perennial Sesbania (jayanti), Leucaena leucocephala,
cassia siamea, etc. The internal hedgerow should consist of perennial pigeon pea,
Crotalaria , seasonal Sesbania, etc. Lops from these trees will provide enough
quantity of biologically fixed nitrogen
In between Glyricidia/Sesbania rows insert few plants of pesticidal value such as
Adathoda vesica, Vitax nigundo, Calotropis, Datura alba, Ipomea (Besharam) etc.
Surrounding the farm or garden, there should be hedgerows or a live fence of
coppiced or pollarded, multipurpose, deep-rooted trees and shrubs and medicinal
herbs such as Adathoda vasica, Vitex negundo, Jatropha curcas, etc. Ecological
diversity is an essential component of any successful organic farming system.
Trees on utility space can be allowed to grow fully. Trees and bushes on farm
bunds should be placed randomly at sufficient distance and pruned at repeated
intervals. Glyricidia plants should be planted at close spacing on all major bunds
and all around the farm. They will act not only as biological fence but also provide
biologically fixed nitrogen to soil.
A 400 mt long Glyricidia strip can provide 22.5 kg N/ha per year from the year 3
and up to 77 Kg N/ha from year 7 under rainfed conditions. This can be 75-100%
higher under irrigated conditions. Three to four harvests can be made under
irrigated conditions and two harvests under unirrigated conditions. Never allow
them to grow above 5.5 ft to avoid shading effect. Lopping is used as green leaf
manure. Simply harvest them and incorporate in soil before sowing or use as
mulch.
we study about Conversion of soil to organic in next post.