We describe a sensitive plant monitoring system by the detection of the bioelectric potentials in plants with boron-doped diamond (BDD) electrodes. For sensor electrodes, we used commercially available BDD, Ag, and Pt plate electrodes. We tested this approach on a hybrid species in the genus Opuntia (potted) and three different trees (ground-planted) at different places in Japan. For the Opunti...

This study was carried out to evaluate the effects of different plant growth regulators on ornamental sunflower plant. The seedlings belonging Helianthus annuus L. cv. Sunsantion F1 were planted in plastic pots (2 L) containing peat:perlite (1:1, v/v) medium at four true leaf stage. Spray treatments aminoethoxyvinil glycine (AVG; 250 and 500 ppm), promalin (5 10 thidiazuron (TDZ; 5-10 µM), ethe...

Effects of Fe and Trichoderma harzianum Bi strain on plant growth and development of Spathiphyllum were investigated. Experiments were carried out in an glasshouse and in pots filled with soil, perlite and coco peat (1:1:1) were used as the growing medium. Plant roots (seedlings with three leaves) were inoculated with Trichoderma (0 and 8% w/w) as media mixture. Fe spray (0, 0.75, 1.5, 3 g/L), ...

Plant-parasitic nematodes are one of the most important pests affecting the growth of vineyards due to the destruction of new roots. Several species are associated with this problem, the most important being the ectoparasite Xiphinema index and the endoparasite Meloidogyne ethiopica. The search for new pest and disease control methods based on bioantagonist microorganisms is an important aspect...

Wild radish is an annual plant that exhibits broad spectrum induced resistance to herbivores. In two experiments, we placed potted plants [control, manually clipped, and damaged byPieris rapae(L.) larvae] in theÞeld andassayed forovipositionbyP. rapae(a specialist herbivore), damage by ßea beetles (a specialist herbivore), and damage by rabbits (a generalist herbivore). Induced responses attrac...