HAMA PENYAKIT UTAMA PADA UBI NAGARA (Ipomoea hatatas) DI LAHAN LEBAK KALIMANTAN SELATAN
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Date
1995-04
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Balittra
Abstract
Pest and diseases on Ubi Nagara (Ipomoea batatas) at swampy area in South
Kalimantan.
Observation of pests and diseases that attack sweet potato of "ubi
Nagara" in swampy area was conducted in Nagara, Daha Selatan sub district, Hulu
Sungai Selatan regency, on the dry season of 1994. The observation took place on
plots that planted at different time, i.e : August 3, August 13, August 23 and September
2, 1994. The results indicated that the kind of pests and diseases that attack ubi Nagara
were sweet potato leaf hopper, ulat keket, black sweet potato roller, grasshopper, sweet
potato weevil, rat, scab and brown spot. The intensity of pests and diseases that attack
stem and leaves still low (0-5%). The pests and diseases were not affected by planting
time, the sweet potato weevil and rat that attack tubers was affected by planting time.
The sweet potato weevil attacked on early planting, while rat attacked on late planting.
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HAMA PENYAKIT UTAMA PADA UBI NAGARA (Ipomoea hatatas) DI LAHAN LEBAK KALIMANTAN SELATAN