How many years until jojoba yields seed and what income and market should I expect?

Jojoba is a slow, long term crop: plants take several years to start meaningful seed bearing and yield builds up gradually over many years as the shrubs mature, with the planting potentially productive for a long life once established. Because it is dioecious, you need a correct ratio of male to female plants for pollination and seed set, and only female plants give seed, so the planting material and ratio strongly affect yield; poor material is a common cause of failure. Yield per acre and income are uncertain in Indian conditions and depend on variety, the male female ratio, climate and above all whether you have a reliable buyer for the seed or oil, since the market is specialised. Treat any yield or income figure as a speculative range, not a promise, and remember past Indian jojoba ventures often disappointed due to weak markets. Secure a buyback or buyer first, start small, use good female heavy planting material, and verify realistic expectations with the arid research station before scaling.