Biomass production and nutritional levels of berseem (Trifolium alexandrium) grown under elevated CO2

Elevated Carbon Dioxide and Soil Moisture on Early Growth Response of Soybean

“…An increase in the number of leaves has been reported in Japanese honey-suckle [52] in sweet potato [45] and in berseem [53] 2 ] enrichment has been reported in soybean by [39] and [54], in berseem by [53]. Our results showed positive correlation between leaf number and leaf area (0.858 * , 0.897 * and 0.401 * , at 29, 44 and 59 DAP, respectively).Decrease in number of leaf and leaf area under high [CO 2 ] at early stage might be attributed to inhibited and slow growth of plants but greater response of plants at later stage may be due to adoptive mechanism of plants.…”

Photosynthesis and nutrient composition of spinach and fenugreek grown under elevated carbon dioxide concentration

“…Our previous studies in berseem (Trifolium alexandrium) crop indicated that under elevated CO 2 there was an increase in nutrients such as N, P, Ca and C and some of the micronutrients like Cu, Fe and Zn on a leaf area unit but all these nutrients showed a decline when calculated on a dry mass unit (Pal et al 2004). In the present study we examined the influence of elevated CO 2 on shoot biomass, photosynthesis and foliar nutrient content in spinach and fenugreek.…”

“…CO 2 being the primary substrate for photosynthesis influences several plant physiological processes directly as a result of this primary response, and a range of secondary responses, including growth, dry matter allocation, and nutrient composition and assimilation may change (Stitt and Krapp 1999, Schortemeyer et al 1999, Uprety et al 2003, Pal et al 2005.…”

“…The concentration of CO 2 inside the chambers was measured regularly using a portable photosynthetic system (LI-6200, LI-COR, Abbreviations: ACO 2 -ambient CO 2 ; DAE -days after exposure; ECO 2 -elevated CO 2 ; g s -stomatal conductance; P N -net photosynthetic rate. * Corresponding author; fax: (+91) 11 25738766, e-mail: vanita_pph@yahoo.co.in Lincoln, USA) and was monitored by the flow meter as described by Pal et al (2004).…”

Molecular diversity of berseem (<italic>Trifolium alexandrinum</italic> L.) rhizobia isolated from Haryana soil

“…Its extraordinary growth results in several cuttings (4-8 cuts) during one growing season and this legume is rich in calcium (2.6%) and phosphorous (2.8%) (Qasim et al, 2007). Also this forage crop is very nutritive, succulent and relished by all the animals due to high protein content (20%) and more digestibility (70%) (Pal et al, 2004). The microbial symbiont of berseem is classified as Rhizobium leguminosarum bv.…”