Peanut seed quality and storage in the humid tropics
1998
Santipracha, W. | Santipracha, Q. | Wongvarodom, V. (Prince of Songkla Univ., Songkhla (Thailand). Faculty of Natural Resources. Dept. of Plant Science)
Peanut (Arachis hypogaeae L.) seed quality and storage in the humid tropics were studied at Hat Yai, Songkhla, southern Thailand. Peanut varieties Khon Kaen 60-1 and Tainan 9 were planted in January and their seeds were harvested in April. The pods were sun-dried for three days and then separately packed in paper and plastic bags, placed in polystyrofoam boxes and stored at room temperature and in cold room at 10 deg C. The seeds before and after 3, 6, 9 and 12 months storage were subjected to test for moisture content, standard germination, speed of germination, conductivity, seedling shoot and root length, and seedling dry weight. Both varieties began to flower at the age of 23-25 days and were harvested at the age of 94 days. The seeds had a high quality with germination of 96-98 percent. Khon Kaen 60-1 variety yielded 260 kg/rai (6.25 rais = 1 ha) and Tainan 9 variety yielded 312 kg/rai. Dry unshelled peanut seeds at moisture content of lower than 6.36 percent could be stored in paper bags for six months with the germination of higher than 90 percent, but deteriorated rapidly when stored in paper bag for longer than 6 months. Seeds stored in plastic bags and in a cold room maintained the quality for twelve months with germination of higher than 94 percent.
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