What yield and running cost can I expect from a net house crop?

A net or shade net house typically improves yield and quality over open field for the same crop because of better protection from heat, pests and viruses, and the produce often grades higher, which fetches a better price. The exact yield gain varies by crop, region and management, so treat any single figure cautiously. Running cost includes planting material, drip nutrients and fertigation, plant protection, labour for the intensive operations, and periodic replacement of the net, which degrades over a few years in the sun and is an expense people forget. Running cost is generally lower than a fully climate-controlled polyhouse because there is no fan-pad or heavy power load, but it is higher per unit area than casual open field farming because the cultivation is more intensive. Whether you come out ahead depends on selling the better-quality produce at a premium. Build your own budget with local input, labour and net replacement costs, and verify expected yield improvement for your specific crop with a nearby net house grower or your KVK.