Emergence, Growth, and Reproduction of Horse Purslane (Trianthema portulacastrum) as Influenced by Environmental Conditions

Abstract

The effect of environmental conditions on horse purslane (Trianthema portulacastrum L. # TRTPO) emergence, growth, and reproduction was studied by sowing seeds on June 10, June 30, July 20, August 10, and August 30, 1984. The first three seeding dates resulted in significantly higher seedling emergence than the August 30 date. Leaf number, leaf area, dry matter, and number of branches per plant at the peak growth stages of this weed were significantly higher for the July 20 sowing than for the other sowing dates, followed closely by the June 30 sowing. Similarly, number of nodes per plant, seeds per plant, and seed weight per plant were also significantly higher for the July 20 sowing, followed closely by the June 30 sowing. Phenological behavior of the plants indicate that: a) maximum seedling emergence takes place during June and July, b) rapid and vigorous growth occurs during July and August (rainy season) when conditions for growth are optimum, and c) production of flowers and seeds starts 20 to 30 days after sowing.

Herbicide Systems for Control of Horse Purslane (Trianthema portulacastrum L.), Smellmelon (Cucumis melo L.), and Palmer Amaranth (Amaranthus palmeri S. Wats) in Peanut

“…It has cylindrical green leaves and the seeds germinate at 20 to 45 C (Chandra and Sahai, 1979). Seeds have essentially no dormancy and can germinate soon after they mature, thus allowing multiple generations in a single growing season (Balyan and Bhan, 1986). Although common purslane (Portulaca oleracea L.), a similar species, was rated as one of the ten most common weeds found in Texas peanut fields as early as 1989 (Elmore, 1989), horse purslane only recently has become a problem in certain peanut growing areas of south Texas (author's personal observation).…”

“…Hand hoeing is a common practice for horse purslane control in mung bean in India (Balyan and Bhan, 1986). However, very little research has been conducted on control with herbicides.…”

Morpho-physiological and mineral nutrient characterization of 45 collected Purslane (Portulaca oleracea L.) accessions

“…Bangash et al (2011), Hussain et al (2011, Mohamed and Hussein (1994) also reported their findings about the highest amount of Potassium (P) but got different results regarding other minerals.…”

“…Seed production of this weed ranges from 126 to 16,300 seeds/ plant with an average of 6,940 seeds/plant (Galinato et al, 1999). Freshly collected seeds have no dormancy and germinate immediately after maturity (Balyan and Bhan, 1986). However, seeds of purslane have the ability to remain viable in soil for up to 40 years (Helen and eHow Contributor, 2004).…”

Exploration of a Hyphomycetes Fungus for Biological Control of Horse Purslane Weed in India

“…Its infestation in cotton, maize and direct-seeded rice especially in rainy season is a matter of great concern and could reduce crop yields by 32-60% (Baylan and Malik, 1989). In India, horse purslane has been reported in the states of Uttar Pradesh, Punjab, Haryana, Rajasthan and Delhi and considered as a number one problematic terrestrial weed by virtue of its infestation in various agricultural and vegetable crops such as mustard, maize, pigeon pea, mung bean, potato, onion, cotton, soybean, pearl millet and sugarcane, especially during the rainy seasons (Balyan and Bhan, 1986). …”