A blueberry grower in the Willamette Valley runs 12 hectares in 60 percent pine bark, 25 percent peat and 15 percent perlite, in raised beds with two drip lines per row. Her substrate holds 45 percent water by volume at container capacity, and she irrigates 14 times a day in July for four minutes ea…
On the first Monday of the planting season, a contractor near Norwich puts 30 seasonal workers through a 90-minute session in a car park behind the depot. There are no slides. There is a stack of 40 litre pots, four bags of gel, a watering can, a set of digital scales and a whiteboard with three num…
The enquiry usually starts the same way: a grower with 40,000 seedlings ordered for November and a quote for 600 kg of gel on the desk, wanting to know whether any of it is necessary. The questions that follow are remarkably consistent across calls from Georgia, Victoria and Andalusia, which suggest…
A parks department in the English Midlands tendered 6,000 street trees with a landscape specification that ran to 40 pages. The polymer clause read: supply and incorporate a suitable water retaining gel at the manufacturer’s recommended rate. Eleven contractors priced it, six were shortlisted,…
The soil test came back at pH 8.6 with 22 percent calcium carbonate and an EC of 0.9 dS/m. The project was 14 hectares of date palm and oleander on a new highway median east of Riyadh, and the contractor had specified a gel that performed beautifully in a laboratory in Shanghai. On site, the granule…
Attica gets about 400 mm of rain a year and almost none of it between May and September. A landscape contractor planting 3,000 native shrubs on a road project in 2023 did everything by the book except one thing: he planted in late April, because the civil works finished in April. The plants went int…
A landscape contractor in Houston planted 220 live oaks and crapemyrtles along a commercial frontage in October, with 60 g of gel per tree in a 90 litre backfill. The trees did well through winter. In June, three months of 90 percent relative humidity and 120 mm of rain a month arrived, and by Augus…
The board pack had two options on facing pages. Option A was a drip retrofit for 84 acres of young walnut: pump, filtration, mainline, tape, installation, 61,000 dollars. Option B was 900 kg of potassium polyacrylate incorporated at planting and a top-up in year three, 4,300 dollars. Both were prese…
A forestry contractor in Parana plants 1,400 hectares a year with a three-row carousel planter running at 4 km/h. In 2023 he switched gel suppliers to save 9 percent on the bag and did not check the screen cut. The new material was a 0.2 to 0.8 mm powder. Within two weeks the dosing augers were brid…
