Allelopathic effects of aqueous extract of rhizomes of  Cynodon dactylon L. were studied on seed germination and seedling growth of three legume crops (Phaseolus vulgaris L., Pisum sativum L., and Vicia faba L.), three Labiatae species (Thymus vulgaris L., Melissa officinalis L., and Mentha spicata L.), and two species of Poaceae (Avena fatua L., Sorghum halepense L.). Seed germination of all L...

The experiment was carried out in the conventional and organic experimental fields of Institute Agriculture - Karnobat, period 2019 2022. aim to study influence weed infestation cropping system pea (Pisum sativum (Linn.)) on beneficial harmful entomofauna. Six seven species insects from families three orders were found damage farming, respectively. Their density higher farming. most economicall...

Growth and symbiotic activity of legumes are mediated by Nod factors (LCO, lipo-chitooligosaccharides). To assess the effects of application of Nod factors on symbiotic activity and yield of pea, a two-year field experiment was conducted on a Haplic Luvisol developed from loess. Nod factors were isolated from Rhizobium leguminosarum bv. viciae strain GR09. Pea seeds were treated with the Nod fa...

Striking and pronounced growth responses to the gibberellins as plant regulators and hormones are well known and readily produced in suitable plants. It was our purpose to study the effects of such growth responses on the concentrations of plant lipids and on the concentrations of antioxidants that are synthesized in plants. Growth changes were induced in pea plants by the application of gibber...

In the first paper of this series (3), it was demonstrated that the auxininduced growth in length of sub-apical sections of etiolated pea stems -is greatly inhibited by light. This light-growth inhibition was subsequently (1, 2) interpreted in terms of a riboflavin-sensitized photoinactivation of indoleacetic acid (IAA). Such an interpretation derives support from the fact that light, concurren...

Stomatal response during exposure to SO(2) and O(3) and subsequent leaf injury were examined in plants of Pisum sativum L. ;Alsweet' grown in a peat-vermiculite medium in controlled environment chambers. Plants developing under moisture stress, induced by drying the medium to 50% of field capacity, exhibited greater stomatal closure during exposures and less than one-fourth the necrosis compare...

Herbicides not only kill the weeds but also affect cell metabolism of economic crops, specifically their photosynthetic machinery [1]. They interfere with the development and structure of chloroplasts, thereby influencing light reactions of photosynthesis [2]. We report in this communication on the inter­ action of pyrazon, triazole and metribuzin with pea chloroplasts during greening in terms ...