Response of dry matter partition and yield components to waterlogging and sunlight shortage in different growth stages of wheat

The nutritive values of animal feed are dependents on plant species, stages of maturity, harvesting and preparation methods. Legumes provide maximum yield, high forage quality (protein, mineral and digestible energy). Legumes decrease in protein and digestible dry matter and increase in fibre as they increase in growth or in maturity (Hochensmith et al., 1997). Alfalfa (medica sativa) is world unique forage in livestock food. This study was conducted to examine the chemical composition and nutrient digestibility of Hamadanian alfalfa forage at different growth stage on two local Iranian sheep and goat breeds.

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Effect of silicon at panicle initiation on the growth of rice (Var. ADT-36) plants at different growth stages

Acta Agronomica Hungarica ◽

10.1556/aagr.50.2002.2.9 ◽

2002 ◽

Vol 50 (2) ◽

pp. 179-184

Author(s):

P. M. Arthanari ◽

P. Gnanamoorthy ◽

S. Ramasamy

Keyword(s):

Tamil Nadu ◽

Dry Matter ◽

Field Experiments ◽

Dry Matter Production ◽

Growth Stages ◽

Maturity Stage ◽

Maturity Stages ◽

Matter Production ◽

Initiation Stage ◽

Different Growth Stages

Field experiments were conducted at Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India during the Rabi (November 1997-March 1998) and Kharif (July 1998-November 1998) seasons to identify the effect of silicon at panicle initiation on the growth of rice plant (Variety ADT-36) at different growth stages. Furnace slag was applied as a silicon source at 2 t/ha at the panicle initiation stage along with other nutrients. The dry matter production was recorded at the active tillering, panicle initiation, booting, flowering, one week after flowering and maturity stages in both the seasons. The total dry matter production was greater in the Kharif season than in the Rabi season. The application of slag at the panicle initiation stage along with N and K at the flowering stage had a significant influence over the dry matter production. A similar trend was observed in both the seasons. The silicon uptake was recorded at the panicle initiation and maturity stages. About 30-40% of the silicon absorbed during the early stages and the maturity stage was present in the shoot, whereas 20-30 % of the silicon absorbed during the maturity stages was present in the leaf blades. Based on the results, it is concluded that the supply of silicon during the panicle initiation stage is most important for plant growth.

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Effects of heat processing on digestible energy and other nutrient digestibilities of full-fat soybeans fed to weaner, grower and finisher pigs

Canadian Journal of Animal Science ◽

10.4141/cjas93-043 ◽

1993 ◽

Vol 73 (2) ◽

pp. 411-419 ◽

Cited By ~ 18

Author(s):

Bruno J. Marty ◽

Eduardo R. Chavez

Keyword(s):

Crude Protein ◽

Dry Matter ◽

Heat Treatments ◽

Neutral Detergent Fiber ◽

Heat Processing ◽

Growth Stages ◽

Ether Extract ◽

Digestible Energy ◽

Weaner Pigs ◽

Different Growth Stages

The influence of different heat treatments for full-fat soybeans (FFSB) on digestible energy (DE) values and fecal nutrient digestibilities was studied using 180 castrated male Landrace pigs at three different growth stages: weaner (17.1 ± 0.2 kg), grower (32 ± 0.2 kg) and finisher (61.6 ± 0.3 kg). The soybean products used in weaner (30%), grower (25%) and finisher (20%) diets were soybean meal (SBM) or FFSB processed by either extrusion (Ex), jet sploding (Js), micronization (Mi) or roasting (Ro). Digestibilities were determined by total fecal collections during the last 7 d of each 12-d period. Dry matter (DM) and neutral detergent fiber (NDF) digestibilities of FFSB were lower (P < 0.05) in weaner than in grower or finisher pigs, but DE values and apparent digestibilities of crude protein (CP) and ether extract were not influenced by growth stage. Extruded FFSB had a superior CP digestibility than the other soybean products (86.4 vs. 79.8, 79.8, 80.0 and 78.2% for Js, Mi, Ro and SBM, respectively), and it also had a higher DE value (21.0 vs. 20.0, 19.6, 18.5 and 16.6 MJ DE kg−1 DM, P < 0.05). Extrusion of FFSB was most beneficial for weaner pigs as this heat treatment resulted in higher (P < 0.05) CP (87.8 vs. 80.9, 80.8, 82.1 and 76.6% for Js, Mi, Ro and SBM, respectively) and NDF (76.2 vs. 62.7, 63.3, 61.9 and 53.8% for Js, Mi, Ro and SBM, respectively) digestibilities. The heat treatments did not influence the CP and NDF digestibilities during grower or finisher stages. The data suggested that extrusion of FFSB yielded superior DE values and CP digestibilities than other heat treatments. Key words: Full-fat soybean products, extrusion, digestibility, pigs

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Effects of irrigation and nitrogen on the yield components of fennel (Foeniculum vulgare Mill.)

Australian Journal of Experimental Agriculture ◽

10.1071/ea9940845 ◽

1994 ◽

Vol 34 (6) ◽

pp. 845 ◽

Cited By ~ 11

Author(s):

M Buntain ◽

B Chung

Keyword(s):

Yield Components ◽

Stem Elongation ◽

Growth Stages ◽

Full Irrigation ◽

Flowering Stage ◽

Foeniculum Vulgare ◽

Late Flowering ◽

Whole Plant ◽

Dry Conditions ◽

Different Growth Stages

A field experiment was conducted to study the effects of irrigation and nitrogen applied at different growth stages on the oil and anethole yields of fennel (Foeniculum vulgare Mill.), and its yield components. Irrigation increased the yield of whole plant dry matter, with the stem elongation stage being the most sensitive. Full irrigation and irrigation applied during the flowering and late flowering growth stages increased umbel and oil yields. Irrigation during the late flowering stage made the greatest contribution to oil yield, accounting for >80% of the yield due to full irrigation. This was attributed to the concurrent timing of irrigation during the late flowering stage with dry conditions and the development of the main oil-bearing structures, the secondary and tertiary umbels. Irrigation had no significant effect on the anethole concentration of the oil. The best economic return was achieved by irrigating during the late flowering stage. There was no significant effect of nitrogen on any of the yield components measured in this study.

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Maize response to broadcast flaming at different growth stages: Effects on growth, yield and yield components

European Journal of Agronomy ◽

10.1016/j.eja.2010.09.002 ◽

2011 ◽

Vol 34 (1) ◽

pp. 10-19 ◽

Cited By ~ 18

Author(s):

Santiago M. Ulloa ◽

Avishek Datta ◽

Chris Bruening ◽

Brian Neilson ◽

Jared Miller ◽

...

Keyword(s):

Yield Components ◽

Growth Yield ◽

Growth Stages ◽

Yield And Yield Components ◽

Maize Response ◽

Different Growth Stages

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Mow-kill Regulation of Winter Cereals for Spring No-till Crop Production

Weed Technology ◽

10.1017/s0890037x00039890 ◽

1996 ◽

Vol 10 (2) ◽

pp. 247-252 ◽

Cited By ~ 10

Author(s):

Erik D. Wilkins ◽

Robin R. Bellinder

Keyword(s):

Soil Temperature ◽

Crop Production ◽

Dry Matter ◽

Field Studies ◽

Bare Soil ◽

Growth Stages ◽

Winter Cereals ◽

No Till ◽

Soil Temperatures ◽

Different Growth Stages

Field studies determined the influence of developmental stage on mow-killing of winter wheat and rye. Both crops were clipped at either three or four different growth stages in 1992 and 1993. When mowed at first node, wheat biomass was 4350 and 1970 kg/ha in 1992 and 1993, respectively. At this stage, primary tiller apices were below 10 cm and regrowth was vigorous. Mowing prior to 75% heading consistently yielded more than 1000 kg/ha regrowth 8 wk later. Wheat cut after flowering produced 15 460 and 9160 kg/ha dry matter in 1992 and 1993, respectively, but less than 30 kg/ha total regrowth. At first and second node, rye produced 4440 and 1800 kg/ha biomass in 1992 and 1993. When mowed belore boot, more than 50% of the total rye biomass was due to regrowth. Rye mowed at boot yielded 6940 and 3740 kg/ha in 1992 and 1993 respectively, and regrowth measured 780 and 910 kg/ha 8 wk later. Mowing after flowering resulted in no measurable regrowth. Soil temperature and PAR were affected by mow-kill date and biomass. Biomass at first mowings (first and second node) in both wheat and rye reduced seasonal soil temperatures 3.5 C compared to bare soil temperatures; while biomass at kernal-filling lowered temperatures 6.0 C. Measured 8 wk after mowing, first node mowings absorbed between 55% and 70% PAR, while plants mowed at kernal-filling absorbed less than 5%.

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