Barley growth, physiology, and forage quality as influenced by defoliation and water stress

El-Mzouri, E.

doi:10.31274/rtd-180813-9812

Cited by 2 publications

(2 citation statements)

References 171 publications

(133 reference statements)

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“…In many countries of West Asia and North Africa, barley is grown for dual purpose in that it is often cut or grazed by small ruminants during the winter months when it is young and green, and then allowed to recover to produce grain (El-Mzouri 1994;Epplin et al 2000). Although this type of management is common in neighboring countries like Morocco (Belaird and Moris 1991); Syria (Mazid and Hallajian 1983) and Tunisia (Sadreddine 2016), it is not commonly practiced in Egypt due to lack of essential information about the proper management practices that support dual purpose barley production.…”

Section: Introductionmentioning

confidence: 99%

Dual Purpose Barley Production in the Mediterranean Climate: Effect of Seeding Rate and Age at Forage Cutting

Salama

2019

Int. J. Plant Prod.

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Barley cutting in the late winter season is a strategy to provide good amount of high quality forage in the Mediterranean region. A 2-year field study was conducted in Alexandria, Egypt, to explore the variations in forage and grain yields and their characteristics of barley seeded with 100, 125, and 150 kg ha −1 and cut at 45, 55, and 65 days after sowing (DAS). The highest significant forage and grain yields were obtained with highest seeding rate (150 kg ha −1), amounting to 18.91, and 4.38 t ha −1 , respectively. Cutting barley at early growth stages (45 and 55 DAS) resulted in the production of higher forage yield with higher quality, in terms of high crude protein and low fiber content, compared to late forage cut at 65 DAS. Meanwhile, early forage cutting resulted in the least amount of reduction in the final grain yield and, thus, grain income. The percentage reduction in grain income associated with forage cutting at 45, 55, and 65 DAS, amounted to 5.7, 19.6, and 31.0%, respectively. However, the net returns obtained from the dual purpose system, when forage was cut at 45 and 55 DAS were $104.27 (11.4%), and $67.91 (7.4%), respectively, greater than that obtained in the grain-only system. Economic analysis showed that the extra income from early forage cutting was sufficient to compensate the grain yield reduction in the dual purpose system. Dual purpose barley production, thus, proved to be highly feasible in the region due to the good price of the barley forage.

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Section: Introductionmentioning

confidence: 99%

Dual Purpose Barley Production in the Mediterranean Climate: Effect of Seeding Rate and Age at Forage Cutting

Salama

2019

Int. J. Plant Prod.

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“…It is evident that the nutritive value of forage grasses decreases with maturation, mainly due to the decrease in CP content accompanied by an increase in fiber content. The decrease in CP content with advanced forage maturation was observed in several forage crops [20,23,24] and could be partially attributed to the dilution of photosynthates accompanying the higher amount of forage yield produced [25]. In the current study, clipping triticale and ryegrass at 60 DAS resulted in forage with high content of CP, while the highest CP content for barley and oat forage was achieved with forage removal at 45 DAS.…”

Section: Treatmentmentioning

confidence: 51%

Agronomic and In Vitro Quality Evaluation of Dual-Purpose Cereals Clipped at Variable Ages and Their Utilization in Rabbit Feeding

et al. 2021

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The present study included two experiments; the first one investigated the forage productivity and in vitro quality of a single cut taken at different plant ages (45, 60, and 75 days after sowing—DAS) from four prominent cereal crops, namely, barley, oat, triticale, and ryegrass, grown during two successive winter seasons in Northern Egypt. In addition, the effect of plant age at forage removal on the crop’s regrowth ability and final grain yield was quantified. The second experiment studied the biological in vivo effects of the four crops’ hay cut at the optimum plant age on growth performance, feed utilization, and apparent nutrients’ digestibility of growing rabbits. Despite the progressive increase in the fresh and dry matter yields produced from the four crops with later forage removal and the relatively high quality of the forage removed at 45 DAS, 1st experiment concluded that forage removal at 60 DAS produced a reasonable amount of fresh and dry matter yields with appropriate in vitro quality. Meanwhile, the gain in forage yield, when forage was removed at 60 DAS, was enough to compensate for the consequent reduction in grain yield of the four evaluated crops. The inclusion of variable percentages (0, 10, and 20%) of the four tested crops’ hay, when cut at 60 DAS, in the rabbit’s diet (2nd experiment), resulted in non-significant variations in the rabbit’s final body weight. Meanwhile, regardless of the percentage, the rabbits that were fed on diets including ryegrass hay and barley hay had the highest significant daily weight gain. The best feed conversion ratios were obtained by the rabbits that were fed on diets containing 10 and 20% ryegrass hay as well as 20% triticale hay. The highest dry matter, organic matter, and crude protein digestibility coefficients were obtained by both groups of rabbits that were fed on diets containing 20% ryegrass hay and barley hay. The inclusion of any of the four crops’ hay in the rabbits’ diet resulted in significantly higher digestibility coefficients for all nutrients compared to the control rabbits except for ether extract digestibility. Among the four evaluated crops’ hay, ryegrass hay was found to have an outstanding impact on the productive performance and digestibility of growing rabbits. In growing dual-purpose cereals, it is recommended to cut the crops at 60 DAS to achieve the optimum balance between forage yield and quality on the one hand and final grain yield on the other hand. Moreover, when cut at 60 DAS, the evaluated hay of the four crops was adequate to be included in the rabbits’ diet up to 20% substitution of the commercial fiber sources.

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Barley growth, physiology, and forage quality as influenced by defoliation and water stress

Cited by 2 publications

References 171 publications

Dual Purpose Barley Production in the Mediterranean Climate: Effect of Seeding Rate and Age at Forage Cutting

Dual Purpose Barley Production in the Mediterranean Climate: Effect of Seeding Rate and Age at Forage Cutting

Agronomic and In Vitro Quality Evaluation of Dual-Purpose Cereals Clipped at Variable Ages and Their Utilization in Rabbit Feeding

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