Effects of red (600 to 680 nanometers) and far red (700 to 760 nanometers) irradiances on Amaranthus retroflexus L. seeds indicate that synthesis of phytochrome in the red-absorbing form takes place in water-imbibed nongerminating seeds at 35 C. After 96 hours in darkness, conversion of about 0.10% phytochrome to the far red-absorbing form induces 50% germination. Continuous far red radiation a...

Background: Amaranthus hybridus L. (Amaranthaceae) is an annual, dicotyledonous species that considered one of the main weed infesting agricultural production systems. Some weeds are host plants to insect pests, serving as “green bridges” for subsequent attacks on crop during season, which can cause significant losses. Recording occurrence insects reach pest status important deployment mitigati...

Abstrak. Gulma adalah tumbuhan yang hidup di sekitar tanaman dibudidayakan keberadaannya tak diharapkan serta sangat merugikan bagi budidayakan dan mempengaruhi hasil pertanian diusahakan manusia. Teki gulma mempunyai potensi untuk dimanfaatkan sebagai bioherbisida, dengan adanya senyawa kimia dikandung oleh teki dapat mengendalikan lainnya. Penelitian ini mampu mengetahui pengaruh ekstrak n-he...

Phytoextraction field experiments were conducted on soil contaminated with 0.39 to 8.7 Bq/g of 137Cs to determine the capacity of five plant species to accumulate 137Cs and the effects of three soil treatments on uptake. The plants tested were redroot pigweed (Amaranthus retroflexus L. var. aureus); a mixture of redroot pigweed and spreading pigweed (A. graecizans L.); purple amaranth (A. crute...

to determine the optimum weed management method and plant population density on chickpea yield, a split plot experiment based on rcbd with four replications was carried out at the university of tehran research farm (located in karaj) during 2010-2011. the main factor consisted of nine treatments including: 1. trifluralin pre-plant, 2. pendimethalin pre-plant, 3. complete weeding, 4. imazethapyr...

methanolic extract of whole plant of amaranthus viridis l (meav), was screened for antinociceptive activity using acetic acid induced writhing test, hot plate test and tail immersion test in mice. in a similar way a screening exercise was carried out to determine the antipyretic potential of the extract using yeast induced pyrexia method in rats. administration of the extracts was applied to bo...