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- Publications by researchers, faculty members, staff, and students of DMMMSU.
- A "lakasa" (storage) for the information materials related to La Union, Ilokano, and Iloko.
Recent Submissions
Molecular Genetics (Biotechnology) (SPBI 120)
(Don Mariano Marcos Memorial State University - North La Union Campus, 2021) Crispino, Ma. Theresa P.
Industrial Biotechnology (SPBI 119)
(Don Mariano Marcos Memorial State University - North La Union Campus, 2021) Crispino, Ma. Theresa P.
Organic insecticides for the control of bitter Gourd fruitfly (Bactrocera sp.)
(Don Mariano Marcos Memorial State University- North La Union Campus, 2023-05) Claro, Leah A.
Bitter gourd is locally known as “Ampalaya” in the Philippines, a valuable plant, belongs to the Cucurbitaceae family and one of the insect pest that occurs in bitter gourd is the fruitfly in the family Tephritidae are high-profile. Organic insecticides are non- chemical insecticides in controlling bitter gourd fruitfly; hence, this study was conducted to evaluate the effectiveness of organic insecticides for the control of bitter gourd fruitflies.
Results of the Bioassay test revealed that two botanical insecticides such as sambong and neem was comparably effective as synthetic insecticide. The mean percentage of mortality on bitter gourd fruitflies, spraying of sambong and neem were able to cause insect mortality with the ranged mean from 80.00 % to 83.33% as compared to synthetic insecticide with a mean of 100.00 %. Among the botanicals, bitter gourd plant sprayed with sambong had the highest net income of (890.3%) per hectare. The application of neem and sambong had produced the highest fruit yield from 1562.4 to 1,765.8 kg/ha as compared to synthetic
insecticide with 1,950.3. It is recommended that similar study should be conducted with some other modification of botanical insecticides.
Occurrence, etiology, morphological characteristics and pathogenicity of fungal leaf spots infecting Corn (Zea mays L.) in Tagudin, Ilocos Sur
(Don Mariano Marcos Memorial State University- North La Union Campus, 2023-05) Manzo, Edyssa O.
Corn (Zea mays L.) is one of the largest plant-based sources of food and considered as the second staple crop next to rice in the Philippines. It is regarded as one of the world’s most productive and predominant crops because of its usefulness for both human and livestock consumption as well as for industrial purposes. This study aimed to determine the occurrence, identify the etiology, know the morphological characteristics
of the observed leaf spot diseases, and test the pathogenicity of the fungal pathogens infecting corn in Tagudin, Ilocos Sur particularly on the five barangays: Pudoc East, Pudoc West, Lantag, Pacac, and Baritao. A total of 15 corn fields were randomly selected and surveyed for the presence of these fungal diseases during the dry season. The results of the survey showed that four genera of fungal diseases were present in the corn fields of Tagudin, with Curvularia sp. being the most prevalent from December to April, followed by Colletotrichum sp., Physoderma sp., and Bipolaris sp. The severity of these diseases varied across the different fields, with some fields showing only mild symptoms while others had severe disease outbreaks. The occurrence of these fungal
diseases can have a significant impact on the yield and quality of corn in Tagudin. Therefore, it is essential for farmers to identify and manage these diseases effectively to minimize their impact on corn production. Overall, this study highlights the need for continued surveillance and management of corn diseases in the region to ensure sustainable corn production.
Identification and morphological characterization of fungal diseases infecting tissue cultures of fungal diseases infecting tissue cultured Banana plants at DMMMSU-NLUC
(Don Mariano Marcos Memorial State University- North La Union Campus, 2023-05) Floresca, Julien Mae G.
Banana (Musa sp.) is a major fruit crop mostly in the tropics making its contribution vital to the economies of many countries. However, this crop is continually being devastated with several fungal pathogens. This study was conducted to identify and morphologically characterize fungal diseases infecting tissue-cultured bananas at
DMMMSU-NLUC and assess their disease prevalence and incidence. Sixty-three months old banana plants were assessed and where diseased plant parts were collected for characterization. Results revealed that the fungal pathogens that infected the tissue grown banana plants were Curvularia sp., Fusarium sp. and Mycosphaerella sp. or Black Sigatoka. A high percent disease prevalence of 100% and incidence of 98% indicated that bananas propagated from tissue cultured were very susceptible to the three fungal diseases. A similar study may be conducted to further verify results by using molecular identification of the fungal pathogens to the species level.