growing organically on hard rock
TRANSCRIPT
Growing food organically on hard rocky terrainYogita Mehra and Karan Manral at
the International Centre Goa, Dona Paula
We started with building raised beds on what was virtually hard rock
2011 Adding soil , sand & compost to create raised beds of 8” height, bounded
with laterite stones
Laterite plateau with only 3”-4” of soil in
most places
2011
Shallow rooted crops begin growing on heavily composted beds
Planting complete, growing underway
Soil left bare to the elements. Bakes in
the hot sun and dries out fast
First round of crops had some pest and disease but were healthy
2011 Soil too clayey; sun too hot; soil dries
quickly
2012
Growing required regular addition of compost
Heavy doses of kitchen-waste
compost regularly added to beds to increase organic
matter in soil
2012
Companions added to help with pest management
Marigold border keeps pests away while attracting
beneficial insects
2013
Introduced mulch with magical effect on soil health and moisture retention
Heavily mulched beds require less
water, reduce unwanted growth
2014
Modifying layout to enable shade, vertical growing space and more mulch production
Dense glyricidia live fencing to create shade, provide
mulch and support for creepers
New walking paths created, thick
mulching continues
2014
Soaking glyricidia stakes in panchagavya to improve survival and growth rates
Panchagavya is a growth promoter made from cow’s milk, dung, urine,
ghee and curds
Soaking stakes in this before planting
increase chances of rooting
2014
Glyricidia established creating shade and ample mulching material for the beds
Live fence or stakes for creepers like passion fruit and
gourds
Shade in different parts at different times of the day creates micro-
climates
2014
Change in layouts (more curves) and denser mixed planting confuses most pests
Additional precaution using
sticky traps
Thick mulch to keep soil cool and reduce
water needs
2014
Taller perennials create a cooler microclimate that allows leafy vegetables to thrive
Shaded sections accommodate plants
that prefer cooler conditions
Companions planted together grow by filling in spaces
2014
Plants continue to grow well with virtually NO regular addition of compost
Soil seemed in great condition after rains,
so negligible addition of extra
compost this year onwards
Mulch needs to be added from time to
time to continue soil protection
2015
Plant yields increase with virtually no problems with pests, soil's water retention gets high
Increased yields, less pest attacks due to mixed
planting
2015
By year 4, what started as just 8 inches of soil is supporting a forest
Post monsoon-growth in Year #4.Glyricidia reaches up to 15ft.
Inside, papaya, banana and tapioca, little gourd, brinjal and chillies thrive with no attention.
Clearing underway for planting seasonal
annuals
Summary points
• Mulch to maintain soil fertility• Grow companion trees to help build soil – they form an
important framework• Plant diverse varieties to prevent pests – perennials AND
seasonal crops• Use compost/cowdung etc sparingly• Adapt the microclimate depending on what you want to
grow• Stack plants vertically and horizontally for greater
productivity
Before vs After
Green Essentials (Karan & Yogita)Goa, India
99606-43245 (Yogita)www.greenessentials.in [email protected]