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Abstrak :
ABSTRACT
The experimental field was planted at Pathum Thani Province to assess the effects of marigold and yardlong bean intercropping on a number of cowpea aphids, a number of natural enemies, growth and yield of yardlong bean and insect bio-diversity. The experimental design was a randomized complete block design (RCBD) with four treatments each of which was replicated three times. Each of the 12 plots measured 7 m x 5 m in the experiment. The distance between inter and intra row spacing for all treatments was 70 x 50 cm with 1 m spacing between plots. The intercropping treatments were: sole yardlong bean (T1), 1 row of yardlong bean with 1 row of marigold (T2), 2 rows of yardlong bean with 1 row of marigold (T3) and 3 rows of yardlong bean with 1 row of marigold (T4). The results showed that intercropping yardlong bean with marigold had significant (p<0.05) effect on the number of cowpea aphids, the number of natural enemies, growth and yield of yardlong bean and insect bio-diversity when compared with the sole yardlong bean. The 1 row yardlong bean + 1 row marigold had the lowest number of cowpea aphids from week1 to week6 when compared with other intercropping. The 1 row yardlong bean + 1 row marigold were value with 26.32+1.24, 42.00+0.61, 65.33+1.69, 70.33+1.69, 110.66+1.24 and 145.00+1.63 aphids/ 5 yardlong, ladybird beetles (34.60 + 1.24), black ant (30.80 + 1.24) and spider (17.33 + 0.94), plant height and weight (42.25 + 0.82 cm and 2.75 + 0.82 kg) and insect bio-diversity (1.44). Therefore, intercropping yardlong bean with marigold is an effective practice in the control of cowpea aphids and enhancing insect bio-diversity.

Abstrak :
The objectives of this research were to determine antioxidant activity of eight different beans, included snap bean (Phaseolus vulgaris L), pigeon pea (Cajanus cajan (L.) Millsp.), mung bean (Phaseolus aureus L.), pea bean (Pisum sativum L.), soybean (Glycine max (L.) Merr.), kidney bean (Phaseolus vulgaris L.), yardlong bean (Vigna sinensis var. sesquipedalis L), and cowpea (Vigna unguiculataL.). Each bean was milled then extracted in 80% ethanol. The extract was evaporated to find antioxidant crude extract. This extract was prepared for antioxidant activity measurement using both conjugated diene and ferric thiocynate methods. Kidney bean had the highest antioxidant crude extract content followed by yardlong bean. At the concentration of 500 ppm, kidney bean and yardlong bean had the highest antioxidant activity among the beans studied, but lower than tocopherol at the same concentration. The conjugated diene content of both beans was 33% compare to 23% for tocopherol. Inhibition of linoleic acid oxidation of yardlong bean and kidney bean were 48% and 52%, respectively compare to 60% for tocopherol.