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- Publications by researchers, faculty members, staff, and students of DMMMSU.
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Recent Submissions
Impact of National greening program (NGP) to selected soil physicochemical properties in Santol, La Union, Philippines
(Don Mariano Marcos Memorial State University - North La Union Campus, 2023-05) Biscarra, Jobert H.; Balbin, Novel P.
Soil quality remains a prime consideration in the critical assessment of the success rates of any reforestation effort. However, soil information on sites under the National Greening Program (NGP) of the Philippine Government remains insufficient. Hence, the study was conducted to identify the impact of NGP on 14 selected soil physicochemical properties in Santol, La Union, Philippines, with reference to the adjacent secondary forest and grassland. Soil sampling was conducted on each study site at 0-60cm depth, with six intervals (0-5, 5-10, 10-15, 15-20, 20-40, and 40-60cm). Soil samples were prepared and analyzed in the laboratory following standard tests. Results revealed no significant
differences in clay and silt contents but significantly different in sand content at 40-60cm depth. The secondary forest attained the highest bulk density at deeper depths, while water holding capacity did not show significant variations among sites. Soil pH and exchangeable calcium were also comparable among sites. The NGP site attained greater soil organic matter than secondary forest but not to grassland. It also exhibited higher total nitrogen content than the reference sites, while exchangeable potassium was generally consistent. Electrical conductivity did not vary among sites, but exchangeable
magnesium and sodium contents varied at certain depths. Strong positive correlations were found between pH and exchangeable calcium, exchangeable calcium and exchangeable magnesium, and total nitrogen and soil organic matter. Strong negative correlation was found between sand and silt contents. Relative to this, the NGP had beneficial effects on improving the soils of reforested land, even exceeding other soil properties within the reference secondary forest.
Response of Kupang (Parkia speciosa hassk) wildlings to root pruning and watering frequencies
(Don Mariano Marcos Memorial State University - North La Union Campus, 2023-05) Beloken, Mico B.
It was in 2012 that indigenous tree species were prioritized for propagation. Relative to this, MC 2012-01 was launched coming from the Philippine Department of Environment and Natural resources emphasizing that indigenous tree species are to be preferred to be planted in protected areas, protection forests, mangroves and urban areas. One of the native species is kupang. The study was conducted to determine the response of kupang wildlings on the root pruning and watering frequencies in terms of growth and survival under nursery conditions at the Agroforestry Nursery, Don Mariano Marcos Memorial State University- North La Union Campus from December 28, 2021 to April 06, 2022. The treatments used were the following: Factor A- (A0) Root Pruning (no root pruning),(A1) 5cm, (A2)7cm, (A3)10cm and Factor B- watering frequencies (B0)every day, (B1)every other day, (B2)every after two days. Result of the study showed no significant effects of root pruning in the height, number of leaves, initial and final diameter, root dry weight, shoot dry weight, root-shoot ratio and survival percentage on the response of kupang wildlings. Watering frequencies showed no significant effects on the height, number of leaves, initial and final diameter, root dry weight, shoot dry weight, root: shoot ratio and survival percentage on the response of kupang wildlings. Result further showed no significant effects on the interaction of root pruning and watering frequency on the height, number of leaves, shoot diameter, root dry weight, shoot dry weight, root-shoot ratio and survival percentage of kupang wildlings.
Performance of yakal (Shorea astylosa foxw.) seedlings applied with biofertilizers and watering frequencies under nursery conditons
(Don Mariano Marcos Memorial State University - North La Union Campus, 2023-05) Almoite, Marc Cyril F.
Yakal is a fast growing tree with deep tap root and its wood has important uses in the manufacture of medium density fireboard, furniture and parquet which strengthen the economic viability of yakal growing.The study was conducted to determine the Yakal seedlings applied with biofertilizers and watering frequencies under nursery conditions. It was conducted at the Agroforestry and Forestry Nursery, Forestry Research, Don Mariano Marcos Memorial State University North La Union Campus, Bacnotan La Union.A total of 324 Yakal seedlings was collected at the Don Mariano Marcos Memorial State University North La Union Campus. The study was laid out following the completely
randomized design (CRD)replicated three times. The treatments were the following: factor A: (Biofertilizers) A1-Control, A2-Mycovam, and A3-Mykoplus the (Watering frequencies) A1-Everyday, A2-Every after two days, and A3-Every three days. The Yakal shows the height, Leaves and roots progressively increased during the duration of the study The study revealed no significant effect on the biofertilizers on the height. Number of leaves, root dry weight, root-shoot ratio and survival percentage on the performance of Yakal seedlings.Watering frequencies showed no significant effects on the number of leaves at 7 days after transplanting while there is no significant effect on the height, number of leaves at 14,21,28,35,42 and 49 DAT, root dry weight, shoot dry weight, root-shoot ratio and
survival percentage on the performance of Yakal seedlings. However,the interaction effects between biofertilizers and watering frequencies on the height, number of leaves, root dry weight, shoot dry weight, root-:shoot ration and survival percentage.
Formulated feeds for broilers using locally available feedstuff
(Don Mariano Marcos Memorial State University - North La Union Campus, 2014-03) Daytaca, Darwin A.
This study was conducted to determine the effect of the formulated feeds for broilers using locally available feedstuff . It was conducted at DEMO FARM Poblacion, Bacnotan, La Union from December 21, 2013 to January 25, 2014 Sixty day-old chick were used in the study employing the RCBD in
three blocks. The birds were distributed in four treatments.
The result of the study revealed that the final weight, gain in weight of birds and profit above feed, medicine and stock cost of birds fed with different leaf meals in formulated ration were comparable with each other however, significantly lower than those birds fed with pure broiler starter crumble. In terms of the feed consumption, feed conversion ratio and cost of feed to produce a gain in weight of the birds showed insignificant result.
Performance of broilers fed with home-mixed feeds
(Don Mariano Marcos Memorial State University - North La Union Campus, 2014-03) Daquing, Anjiro Haji D.
The high cost of commercial feeds prompted poultry raisers to look for alternative sources of feeds such a formulating feeds mixing different ingredients. This study was conducted to determine the performance of broilers fed with homemixed feeds. This was conducted at Barangay Casiaman, Bacnotan, La Union from December 1, 2013 to January 4, 2014. A total of 80 heads of a 14 day old
broiler chicks were distributed randomly in four treatments following the RCBD in four blocks.
Results revealed that the final weight and gain in weight of birds fed with home-mixed feeds containing 21% rice bran was comparable to those birds fed with pure BSM. As to the feed consumption and feed conversion ratio, birds fed with home-mixed feeds and pure BSM were comparable with each other. However, the profit above feed, medicine and stock cost of birds fed with homemixed feeds containing 18% and 21% rice bran were significantly higher than those fed with pure BSM.