Yield, Vigor, and Persistence of Sand Lovegrass [Eragrostis trichodes (Nutt.) Wood] following Clipping Treatments

Moser, Lowell E.; Perry, L. J.

doi:10.2307/3898172

Cited by 13 publications

(3 citation statements)

References 16 publications

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“…Barimavandi et al (2010) showed that yield response of maize (Zea mays L.) to defoliation depends on the intensity of defoliation, leaf position and stage of crop growth. Moser and Perry (1983) found reduction in total seasonal yield and tiller numbers of sand lovegrass (Eragrostis trichodes Nutt.) with multiple defoliation (seven harvesting treatment).…”

Section: Sink Strengthmentioning

confidence: 99%

Analyzing the significance of defoliation in growth, photosynthetic compensation and source-sink relations

Iqbal¹,

Masood²,

Khan³

2012

Photosynt.

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Leaf canopy plays a determining role influencing source-sink relations as any change in source activity (photosynthesis) affects sink metabolism. Defoliation (removal of leaves) influences growth and photosynthetic capacity of plants, remobilizes carbon and nitrogen reserves and accelerates sink metabolism, leading to improved source-sink relations.The response of plants to defoliation could be used to manipulate source-sink relations by removing lower and senescing leaves to obtain greatest photosynthetic capacity and efficient carbon and nitrogen metabolism under optimal and stressful environments. The present work enhances our current understanding on the physiological responses of plants to defoliation and elaborates how defoliation influences growth, photosynthetic capacity and source-sink relations under optimal and changing environmental conditions.

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Section: Sink Strengthmentioning

confidence: 99%

Analyzing the significance of defoliation in growth, photosynthetic compensation and source-sink relations

Iqbal¹,

Masood²,

Khan³

2012

Photosynt.

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“…Increased defoliation frequency reduces axillary bud number in various perennial grasses (Mullahey et al 1990(Mullahey et al , 1991. Plants of Panicum virgatum (Beaty and Powell 1976)a n dEragrostis trichodes (Moser and Perry 1983) reduced their tiller number when defoliated frequently. Frequent defoliations determine an excessive aerial tissue loss, and a subsequent reduced photosynthesis (Newton and Hay 1996).…”

Section: Introductionmentioning

confidence: 99%

Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis

Busso

Gittins²,

Becker

et al. 2011

Ecological Research

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Bud viability after various defoliation frequency treatments was determined in the perennial bunchgrass Poa ligularis under arid field conditions from 2002 to 2005. Bud respiratory activity was examined on various stem base hierarchies using the tetrazolium test, as validated with the vital stain Evan's blue. The hypothesis of this work was that the total and viable axillary bud numbers on stem bases of all study stem base hierarchies are reduced as defoliation frequency increases. Interpretation of the results differed when they were expressed as a percentage rather than on a number per stem base basis. The total number of axillary buds per stem base was similar in all defoliation frequencies.When the results were expressed on a percentage basis, the order on stem bases having metabolically active buds was daughter tillers > stem bases with green tillers > stem bases without green tillers in all defoliation frequencies. The reverse order was found when considering dead buds. How the results are expressed thus deserves our attention when reporting results on bud viability in perennial grasses. An increased defoliation frequency increased the percentage of dead and dormant buds after the third or fourth defoliation of P. ligularis during the 1st study year. These percentages of bud viability, however, increased after the first defoliation during the 2nd study year. Bud viability was affected not only by the cumulative effects of defoliation but also by climatic variables throughout the seasons. However, our results show that P. ligularis can be defoliated up to twice a year without affecting bud viability, and thus its potential capacity for regrowth after defoliation.

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“…Defoliation time affects range grass development (Miller andDonart 1979, Mullahey et al 1990), where the most critical period is during the reproductive stage. As the reproductive stage is approached, the plants become more sensitive to defoliation (Tarassoum 1982, Moser andPerry 1983). Barley grazed at the pre -stem elongation stage allows recovery and production of grain yield equivalent to that of ungrazed stands (Morey 1961); therefore, dual -purpose barley is becoming more popular in Iraq because it tolerates grazing at the pre -stem elongation stage (AL -Rawi et al 1995).…”

Section: Introductionmentioning

confidence: 99%

Management Optimization of Dual-Purpose Barley (Hordeum spontaneum C. Koch) for Forage and Seed Yield

El-Shatnawi¹,

Al-Qurran²,

Ereifej³

et al. 2004

Journal of Range Management

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Dual-purpose barley (Hordeum spontaneum C. Koch.) is a winter annual native to Southern Mediterranean regions. It is used to establish permanent pasture because it has a brittle rachis. Crude protein, crude fiber contents, and responses of dual-purpose barley to time of defoliation were investigated in the northern mountains of Jordan. Field trials were conducted in the 1999-2000 and 2000-2001 growing seasons in Samta (3T 23'N, 35 °50'E) at an elevation of 1043 m. The highest protein contents (P < 0.05) of 25% were recorded in February 2001. Protein content declined gradually and reached the lowest values (2.5 %) at maturity. Clipping produced shorter plants, but did not impact tillering.

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Yield, Vigor, and Persistence of Sand Lovegrass [Eragrostis trichodes (Nutt.) Wood] following Clipping Treatments

Cited by 13 publications

References 16 publications

Analyzing the significance of defoliation in growth, photosynthetic compensation and source-sink relations

Analyzing the significance of defoliation in growth, photosynthetic compensation and source-sink relations

Tiller hierarchy and defoliation frequency determine bud viability in the grass Poa ligularis

Management Optimization of Dual-Purpose Barley (Hordeum spontaneum C. Koch) for Forage and Seed Yield

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