Influence of seed size on field emergence growth and yield of peanut
1990
Juangjun Duangpatra | Chokchai Kittithanesuan (Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Dept. of Agronomy)
Study on the effect of seed size on field emergence growth and yield of large-seeded peanut was done in the two promising peanut varieties: KUP 24D-421 and KUP 24D-084. Hand shelled dry peanut seeds from the sound mature pods were sorted into three different size using the oblong perforated hand screens. Large seeds were those that remained on the 21.5/64*3/4 inch screen. Seeds that passed through the 21.5/64*3/4 inch screen and remained on the 17/64*3/4 inch screen were medium size, and those seeds that passed through the 18/64*3/4 inch screen were the small seed size group. Moisture content of the small seeds were higher than the medium and large seed but seed weight of the large seed sizes were higher than the smaller sizes. Differences in seed germination and seed vigor were not found among the different seed sizes, although the larger seed sizes were higher in seedling dry weight. Field experiment indicated that small peanut seeds germinated faster than the large seed. It was also found that at the early growth stages, peanut plants planted from the small seeds were lower in plant dry weight than those planted from the large seed sizes, but there was no difference in flowering date, as well as pod yield and seed yield among those peanuts planted from different seed size classes.
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