A molecule can kill an insect in a cage. That does not tell you whether it holds in Lowveld heat, under a dense canopy, through a flush, inside a harvest interval, or against a residue limit a processor will actually accept.

AITSA runs chemical and biological evaluation where the pest lives: in commercial orchards of macadamia, avocado, mango, litchi, coffee and allied tropical fruit. Protocols are written for the insect that is in the tree this week — not the pest list from a decade ago.

Macadamia Felted Coccid rewrote that list in Mpumalanga. The two-spotted stink bug has been rewriting kernel quality for much longer. The next species will not wait for a registration.

Calendar spray programmes were written for a different orchard.

Priority Pests

The insects deciding yield, quality and trade.

We treat pests as field problems with names, phenology and economics — not as a generic “insect pressure” slide. Current work is anchored on the species already moving through African horticulture.

Hemiptera · Pentatomidae   Field series 02

Bathycoelia distincta

Distant · two-spotted stink bug

Stink bug complex

Twenty-one pentatomid and allied species have been taken from South African macadamia orchards. On immature nuts, more than ninety percent of that catch is B. distincta. Its long rostrum reaches kernel through the season, which is why “late spray” is often an autopsy, not a programme.

The winter complex — shorter-mouthed species including Nezara viridula, Chinavia pallidoconspersa and Pseudatelus raptorius — arrives as nuts harden. Coconut bug (Pseudotheraptus wayi) sits in the same economic conversation on macadamia, avocado and litchi. AITSA trials chemistry and biological options against the complex as it actually turns up, not against a single labelled species.

• Kernel Damage
• Season-Long
• Cross-Crop

Thaumatotibia batrachopa (macadamia nut borer) and Thaumatotibia leucotreta (false codling moth) — moths that turn a processor’s intake into reject, and a phytosanitary file into a trade problem.

Armoured scales on mango and avocado, thrips on flush and fruit, and tephritid fruit flies across mango, litchi and citrus-adjacent plantings. Often the species that get ignored until a consignment fails.

Coffee berry borer, antestia, white stem borer, and the pest suites that move with mango, litchi and avocado as those industries densify across the continent. If it threatens a tropical fruit canopy in Africa, it is in scope.

Crops

Tropical fruit, where Africa actually grows it.

Macadamia is the sharp end of the current pest emergency. The same field method applies wherever canopy, climate and trade meet: avocado, mango, litchi, coffee, and the rest of the subtropical basket.

Other tropical and subtropical fruit are included when the pest, the chemistry, or the biological crosses over. The unit of work is the orchard system, not a single commodity brochure.

In-Orchard evaluation 

Replicated plots · commercial canopy · grower standard as control

Method

Chemistry and biology, scored in the same row.

AITSA is not a spray contractor and not a desk model. We write the protocol, put treatments in commercial trees, and return evidence a grower, a registrant or a department can defend.

In-Orchard evaluation 

Replicated plots · commercial canopy · grower standard as control

Method

Chemistry and biology, scored in the same row.

AITSA is not a spray contractor and not a desk model. We write the protocol, put treatments in commercial trees, and return evidence a grower, a registrant or a department can defend.

Who whe work with

Independent data. Not another product story.

AITSA is not a spray contractor and not a desk model. We write the protocol, put treatments in commercial trees, and return evidence a grower, a registrant or a department can defend.

Industry bodies and government

Actionable field evidence for national pest response — the kind of dossier required when an invasive such as MFC stops being a farm problem and becomes a sector problem.