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Field notes

Notes from the press room and the cold room

Why azadirachtin ppm matters more than litres
Featured · Agronomy

Why azadirachtin ppm matters more than litres

Two drums of neem oil can differ tenfold in active content. Here is how extraction temperature, seed moisture and storage decide what actually reaches the pest.

8 min read Srinidhi Agronomy Desk
The full neem product family, from kernel to shelf
Products

The full neem product family, from kernel to shelf

Oil, cake, granules, powder, soap, toothpowder and capsules — where each one comes from in the same seed.

The village pharmacy: how neem earned its name
Neem story

The village pharmacy: how neem earned its name

From temple courtyards to the modern input shelf — a short history of Azadirachta indica in Indian life.

Neem cake vs. chemical nematicides: a season-long comparison
Agronomy

Neem cake vs. chemical nematicides: a season-long comparison

What happened in a tur field where one half received neem cake at sowing and the other did not.

Cold press vs. screw expeller vs. solvent extraction
Pressing

Cold press vs. screw expeller vs. solvent extraction

Three ways to get oil out of a kernel, and what each one does to the azadirachtin you paid for.

Why we double-press the kernel
Pressing

Why we double-press the kernel

The second pass adds yield without heat — and leaves a cake that still carries useful actives.

Pre-cooling within six hours: the shelf-life multiplier
Cold chain

Pre-cooling within six hours: the shelf-life multiplier

Field heat is the silent loss. Removing it early adds more days than any chamber upgrade.

Diluting neem oil correctly for sensitive skin
Formulation

Diluting neem oil correctly for sensitive skin

Carrier ratios with jojoba and coconut, and why undiluted application backfires.

One tree, twelve uses: a Sirasgi household audit
Neem story

One tree, twelve uses: a Sirasgi household audit

We asked forty families what they still use neem for. The answers ranged from grain storage to gum pain.

Filtration: the step that decides shelf life
Pressing

Filtration: the step that decides shelf life

Settling, bag filters and polish filtration — how sediment turns into rancidity if it stays in the drum.

What a fair farm-gate price for neem seed looks like
Sourcing

What a fair farm-gate price for neem seed looks like

Moisture, kernel ratio and transparency — the three things that decide a fair rate.

Holding onion through the monsoon dip
Storage

Holding onion through the monsoon dip

Humidity, airflow and stacking practices that keep sprouting and rot in check.

Datun, toothpowder and paste: choosing a neem oral routine
Products

Datun, toothpowder and paste: choosing a neem oral routine

What each format actually does for plaque, cavity bacteria and gum inflammation.