5 months ago
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A atom tract that raises fish, feeds ducks, and carries a greenish mat of Azolla whitethorn look antithetic astatine archetypal glance, but a two-year tract survey by the Tamil Nadu Rice Research Institute (TRRI), Aduthurai, suggests that it could beryllium 1 of the astir pragmatic clime alteration solutions for paddy — cutting greenhouse state emanation portion delivering a crisp leap successful yields.
The study, conducted during the 2022–23 and 2023–24 samba seasons, recovered that an integrated atom farming strategy combining greenish manuring, beneficial microbes, and aggregate workplace components reduced the wide clime alteration interaction — measured arsenic c dioxide equivalent (CO₂e) — by 32.6% compared with accepted atom monoculture reliant connected chemic fertilizers. At the aforesaid time, atom output roseate by astir 45%, the researchers reported.
Paddy cultivation is among the biggest sources of farm-related greenhouse gases, mostly due to the fact that flooded fields make oxygen-starved conditions that favour methane formation, portion precocious fertilizer usage thrust nitrous oxide emission.
In the integrated plots, paddy followed a greenish manure harvest (daincha) and was supported with phosphorus-, potassium- and zinc-solubilising bacteria, portion food rearing, duck foraging and dual cropping of Azolla were introduced arsenic complementary components. Together, the interventions altered the soil-water situation successful ways that improved nutrient recycling and weakened the conditions that favour methane-producing microbes.
Measurements showed a 34.2% simplification successful methane emanation and a 24.9% simplification successful nitrous oxide emanation compared with atom fields that thrive with chemic fertilizers. Researchers said that c dioxide emissions rose, accordant with higher biologic activity, and decomposition nether integrated inputs, but the wide warming imaginable inactive declined, due to the fact that methane and nitrous oxide trap much vigor than CO₂ implicit comparable timeframe.
K. Subrahmaniyan, Director, TRRI, said the attack redefined “productivity” successful paddy cultivation. “Integrated Farming System is not conscionable astir yield. It is astir nutrient security, nutrition, and ungraded information — things we often hide successful regular farming,” helium said. When aggregate components are integrated with paddy, helium added, the workplace generates much worth from the aforesaid land: “Fish becomes a root of macromolecule and further income, alongside the crop.”
Importantly, TRRI researchers accidental the exemplary is designed to beryllium workable adjacent for tiny farmers. Mr. Subrahmaniyan said adjacent connected a one-acre farm, dedicating astir 10% of the country to a peripheral trench — astir 1 metre wide and 1 metre heavy — could outgo astir ₹10,000, and nether suitable management, nutrient up to 400 kg of fish, offering an estimated ₹25,000 further income, isolated from the atom crop. In specified layouts, astir 90 cents of onshore remains nether paddy and 10 cents supports fish, with ducks integrated successful immoderate versions.
