000			01932nam a2200205 4500
001			UPMIN-00000009222
005			20220921140844.0
040			_aDLC _cDLC _dupmin
041			_aeng
090			_aLG993.5 2003 _bB4 N39
100	1		_aNazareno, Nanette S.
245	0	0	_aDistribution of the noxious weed, Helianthus cucumerifolius Torr. and gray in the Davao Provinces / _cNanette S. Nazareno
502			_aThesis (BS Biology) -- University of the Philippines Mindanao, 2003
300			_a34 leaves
260			_c2003
520			_aStrip survey and mapping were done to determine the distribution of the exotic weed Helianthus cucumerifolius from it was first reported in 1996. Survey along roads revealed that the weed is concentrated in Davao City, Davao del Sur. The mapping revealed that weed infestation has so far reached five districts of Davao City, namely, Calinan, Tugbok, Talomo, Toril and Marilog. Weed population decreased as distance radiated outward from the point of origin. Bago Oshiro, the place where the weed was first spotted, had the highest population density at 401.7 hills/m2. This was followed by Mintal (279.5 hills/m2), Sto. Nino (103.4 hills/m2), Catalunan Pequeno (95.5 hills/m2), Catalunan Grande (70.4 hills/m2)), Tugbok (66.2 hills/m2), Dumoy (23.6 hills/m2), Baliok (17.4 hills/m2), Bago Gallera (4.3 hills/m2), Tacunan (1.7 hills/m2), Los Amigos (1.4 hills/m2), Bangkas Heights 90.88 hills/m2), Riverside (0.46 hills/m2), Ula (0.18 hills/m2), and Mulig (0.12 hills/m2). Patches of weed infestation were recorded in Rizal, Bansalan and Astorga, Sta. Cruz in Davao del Sur. The reported occurrence of the weed along oil palm plantations in Sultan Kudarat was also confirmed. Rainy periods provided better vegetative and reproductive growth for the weed. Dry period, on the other hand, caused retardation of their growth
658			_aUndergraduate Thesis _cBIO200, _2BSB
905			_aFi
905			_aUP
999			_c277 _d277