Feed Value of Forage Maize Hybrids Varying in Tolerance to Plant Density

Pinter, L.; Alföldi, Zoltán Péter; Burucs, Z.; Páldi, Emil

doi:10.2134/agronj1994.00021962008600050010x

Cited by 17 publications

(17 citation statements)

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“…Pioneer 3902 achieved a maximum yield at 86800 plants ha −1 and declined as plant density increased further, while dry matter yield of Pioneer 3921 increased through the entire range of plant density treatments. Plant density × hybrid interactions for dry matter yield have been observed previously by Graybill et al (1991), Cox (1996), and Pinter et al (1994) A plant density × hybrid interaction was observed for ADF in the southern zone.…”

Section: Resultssupporting

confidence: 72%

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Plant Density and Hybrid Influence on Corn Forage Yield and Quality

1999

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plants ha Ϫ1 and maximum grain yield at 74 100 plants ha Ϫ1 . However, maximum forage yields have also been Corn (Zea mays L.) hybrid selection and plant density are imporreported at 79 000 plants ha Ϫ1 (Graybill et al., 1991) and tant management considerations for successful forage production in dairy and livestock operations. The objectives of this study were (i) 100 000 plants ha Ϫ1 (Sparks, 1988).to determine the effect of plant density on high-and low-quality corn Even though corn forage yield may have a greater hybrids and (ii) to describe the economic trade-off between plant optimum plant density than corn for grain, forage qualdensity and forage yield and quality. Two adapted hybrids selected ity losses at high plant density have been reported for high and low quality characteristics were grown in the field at (McAllan and Phipps, 1977). As plant density increases five plant densities ranging from 44 500 to 104 500 plants ha Ϫ1 at six from 18 500 to 143 300 plants ha Ϫ1 , in vitro true digestlocations in Wisconsin during 1994, 1995, and 1996. Forage quality ibility decreases (Sanderson et al., 1995; Jones et al., response among hybrids was similar across the range of plant densities 1995). The negative relationship between plant density evaluated. As plant density increased, dry matter yield increased 1.7 and corn forage quality makes it difficult to recommend to 4.1 Mg ha Ϫ1 , depending on location. Maximum dry matter yields plant density for optimum animal performance based were observed at 97 300 to 102 200 harvested plants ha Ϫ1 . In vitro true digestibility decreased 16 to 23 g kg Ϫ1 as plant density increased. on yield. The objectives of this study were (i) to deter-Crude protein decreased 6 to 8 g kg Ϫ1 as plant density increased. mine the effect of plant density on high-and low-quality Neutral-detergent fiber increased 20 to 35 g kg Ϫ1 , and acid-detergent corn hybrids and (ii) to describe the economic tradefiber increased 19 to 29 g kg Ϫ1 with increasing plant density. A tradeoff between plant density and forage yield and quality. off exists between yield and quality for corn forage. Milk Mg Ϫ1 decreased 98 to 143 kg milk Mg Ϫ1 with increasing plant densities, but MATERIALS AND METHODS milk ha Ϫ1 increased 926 to 2176 kg milk ha Ϫ1 until about 75 000 to 85 000 harvested plants ha Ϫ1 , and did not change with higher plant den-Experiments were conducted from 1994 to 1996 at six locasities.tions in Wisconsin. The locations were grouped into three production zones. In the southern zone, the soil at Lancaster was a Rozetta silt loam (fine-silty, mixed, mesic Typic Hapludalf), and the soil at Arlington was a Plano silt loam (finewere fed genotypes with low and high digestibility. Like-Milk, kg ha Ϫ1 y ϭ 6720 ϩ 166x Ϫ 1.03x 2 0.96 wise, these hybrids yielded 2286, 1947, and 248 more kg † DM, dry matter; HI, harvest index; IVTD, in vitro true digestibility; CP, milk ha Ϫ1 in the southern, central, and northern zones, crude protein; NDF, neutral-detergent fiber; ADF, acid-detergent fiber; CW digestibi...

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Section: Resultssupporting

confidence: 72%

“…Corn hybrids respond differently to high plant density (Phipps and Weller, 1979; Pinter et al, 1994). Nafziger (1994) suggested that newer hybrids have greater grain yield at higher plant densities than older hybrids.…”

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confidence: 99%

Plant Density and Hybrid Influence on Corn Forage Yield and Quality

1999

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“…These results agree with the findings of Graybill et al (1991) and Widdicombe and Thelen (2002) who found that plant density did not have a significant effect on HI. However, Pinter et al (1994) reported that corn hybrids responded differently to high plant density. The effect of hybrid, row spacing and hybrid × row spacing interaction on the DM yield is shown in Table 3.…”

Section: Resultsmentioning

confidence: 99%

Effects of hybrid and row spacing on maize forage yield and quality

İptaş¹,

Acar²

2006

PLANT SOIL ENVIRON

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This study was conducted to determine the effect of row spacing (40, 60 and 80 cm) on forage dry matter (DM) yield and quality of four hybrids grown in the years 2001 and 2002. The highest DM yield was obtained from the Arifiye (24.1 and 22.4 t/ha) while the lowest DM yield was obtained from Pioneer 3163 (19.9 and 19.8 t/ha) in the years 2001 and 2002, respectively. As row spacing increased, DM yield as an average of two years decreased from 27.2 to 16.6 t/ha. No differences were found among row spacing for DM content, harvest index (HI) and ear content. As row spacing increased, whole-plant acid detergent fiber (ADF) and neutral detergent fiber (NDF) content increased from 214 to 227 g/kg and from 420 to 451 g/kg during the year 2001, respectively. However, ADF content decreased from 281 to 267 g/kg and NDF contents decreased from 530 to 515 g/kg with increasing row spacing during the year 2002. In this study, hybrids showed distinct differences for crude protein, ADF and NDF contents in both years. Forage quality parameter including ADF and NDF of Pioneer 3163, TTM 8119 and Karadeniz Yildizi were higher than Arifiye hybrid.

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“…It was determined that dry matter yields ranged from 11,371 kg/ha to 12,062 kg/ha in the averages of years according to intrarow spacing, while dry matter yield increased as intrarow spacing increased. Konak (1994) and Pinter et al (1994) found that the increase in plant density led to a decrease in dry matter rate and dry matter yield in their studies. The effects of silage corn varieties on dry matter yield were statistically significant according to the average of years (Table 5).…”

Section: Dry Matter Yieldmentioning

confidence: 96%