Pertumbuhan dan Hasil Buncis Tegak di Bawah Naungan di Dataran Rendah
French beans (Phaseolus vulgaris L.) are potential to be planted in the lowlands and become intercrops but are constrained by high temperature and low light intensity in the shade which affects plant growth. The purpose of the study was to obtain information on the growth and yield of french beans related to their adaptation to shade. This research was conducted at PKHT IPB, altitude 250 m asl, from October 2019 to January 2020. The experiment used a two-factor nested plot design with four replications. The first factor is three levels of shade, namely 0, 25, and 50%. The second factor was varieties Balitsa 2, Balitsa 3, and Lebat 3 as a comparison. The results showed that three varieties of beans can be grown in the shade with the best 25% shade. The plants under 25% shade were able to maintain the number of leaves and branches, shorten the flowering time, and maintain the yield component. Shade increased plant height and stem diameter so that the risk of lodging was reduced. The best bean variety was Balitsa 3 because it has tall stature, large stem diameter, more leaves and branches, faster flowering, and large yield components.
Keywords: adaptation, Balitsa, french beans, light intensity