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Annual report 1990 [includes studies on the influence of agronomic and storage practices on potato quality for frozen French fries, etc.]
1991
Assessment of potato clones using apical cuttings by farmers in Benguet [Philippines]
1991
Simongo, D.K. | Demonteverde, V.E. | Tandang, L.L. | Vander Zaag, P. | Chujoy, E. (Benguet State Univ., La Trinidad Benguet (Philippines). Northern Philippines Root Crop Research and Training Center)
An on-site and 15 on-farm trials were conducted to determine the agro-socioeconomic acceptability of new potato clones. Specific objectives were to evaluate 8 clones for late blight resistance, and yield; to determine the feasibility of using apical cutting as planting material; and to determine the economic benefit from growing cuttings. The clones LBR 1-5 were the most prolific in cuttings and tuberlets production while P-6 was the least. Tuber yield in on-site trial following recommended agronomic practices ranged from 16.2 to 41.2 t/ha. The clones I-1039, LBR 1-9, LBR 1-5 and LBR 1-3 outyielded the check variety Granola grown from local tuber seed. Mean tuber yield of 15 trials managed by farmers was 17.0 and ranged from 6.9 to 28.6 t/ha. LBR 1-9 was the most promising clone yielding 21.2 t/ha. It had large sized tubers, late blight resistance, good eating and tuber quality. The highest net income was obtained from growing cuttings of LBR 1-9 and I-1085 with a profit/cost ratio of P0.93 and P0.89, respectively. Whereas, Granola which was grown from tuber seed had a profit of only P0.052. Results indicate that farmer-researcher interaction is crucial for germplasm evaluation. Their initial involvement saved time and energy in the selection of the most promising clones. Also the use of apical cuttings made a rapid assessment of new clones possible. Furthermore, it is a potential and profitable tool for potato production
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