Evaluation of semi-temperate vegetables (cabbage, chinese cabbage and carrot) accessions under organic conditions in Benguet [Philippines]
2012
Tad-awan, B.A. | Perez, J.C. | Orlang, J.C., Benguet State Univ., La Trinidad, Benguet (Philippines). Coll. of Agriculture
The study was conducted to evaluate and select vegetable varieties adapted under organic conditions in Benguet. Different accessions of cabbage, chinese cabbage and carrots were sourced-out from different sources. Accession from each vegetable were evaluated in separate trials at the Benguet State University (BSU) organic farm, La Trinidad (1332 m asl) during the dry season (November to February)and wet season (April to July) of 2010-2011. Seeds of the cabbage and chinese cabbage were first sown on potting trays and transplanted one month from sowing. Direct sowing was done on carrots. Furrows were constructed on plots where BSU grower's compost was applied at a rate of 5 kg/5 sq m. Each vegetable and its accession were evaluated separately following the randomized complete block design (RCBD) with three replications. Cultural management practices contained in the Philippine National Standards (PNS) for organic production were followed. Crop protection was done with the use of locally available organic pesticide. Crop diversity of 10-15% was maintained by planting onions, snap beans, marigold and corn at the end of plots and border rows. Among the cabbage accessions evaluated during the dry season, Cb 03 produced the highest yield. During the wet season, Cb 04 produced the highest yield and recorded the lowest percentage of weight loss. For chinese cabbage, Cc 07 and Cc 02 were the earliest to form heads at 37 days after transplanting. Cc 04 recorded the highest percentage of heading, had the heaviest heads and produced the highest yield during the dry season. Cc 02 produced the heaviest heads and highest yield during the wet season trial. For carrots, Ca 03 produced the highest marketable roots, highest yield and had the longest roots during the dry season trial. During the wet season trial, Ca 04 produced the widest and longest roots and recorded the highest marketable and total yield.
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