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کشاورزی::
حاصل دانه
Seed yield in sunflower is a product of the number and weight of fertile seeds produced per head (Robinson, 1983) Sunflower heads have an ability to compensate for damaged seeds by increased weight of the remaining seeds.
High temperatures above 3sS reduce seed yield and oil content, while a temperature below 16°C at flow 8 C reduces seed-set and oil content, A strong relationship exists between ncid content of seed and daily mean minimum temperature fom fl0wer &lc harvest, with high night temperature being especially important, Linole^ 5 increases as the temperature during development decreases, while the COTIV^'^ increases oleic acid.
In rice fallows, there was a dear decreasing trend in seed yield with delayed sowings in both Alflsols (Reddy er n/.
Seed yield (kg/ha)
However, as a crop, it offers considerable degree of plasticity to adjust to variations in pl^1 population by way of alterations in head size and yield per plant (Table A.12)- A variation Tnom 56,000 plams/ha to 98,000 plants/ha does not make signified difference in seed yield/ha but seed yield/plant varies drastically.
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