"Sesamum indicum" cultivation yield sesame seed production agronomy sesame yield kg per hectare cultivar sesame seed germination temperature sesame planting density row spacing sesame sowing date flowering yield sesame photoperiod flowering genotype sesame drought tolerance irrigation water requirement sesame heat stress flowering seed set sesame nitrogen phosphorus potassium fertilization sesame soil pH salinity waterlogging sesame capsule development seed maturity sesame capsule shattering dehiscence genetics sesame harvest timing seed loss shattering sesame manual harvest threshing cleaning sesame seed drying storage moisture quality sesame stored seed pests fungi sesame oil content seed quality processing sesame small scale home garden production sesame Mexico ajonjoli production agronomy sesame pests diseases pathogens sesame weed competition management sesame seed viability storage longevity sesame non-dehiscent capsule cultivar mechanized harvest sesame cultivar genetic diversity landrace breeding sesame smallholder value chain economics labor ajonjoli Mexico cosecha desgrane rendimiento sesame seed food safety allergen aflatoxin contamination