Effects of Cutting Height of the First Crop on Estimated Total Digestible Nutrient Concentration and Yield in Double‐Harvested Rice

Nakano, Hiroshi; Hattori, Ikuo; Satô, Kenji; Morita, Satoshi; Kitagawa, Hisashi; Takahashi, Motoki

doi:10.2134/agronj2009.0347

Cited by 11 publications

(9 citation statements)

References 8 publications

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“…A recently developed technique for double harvesting (ratooning) of forage rice can give very high yields of DM (Nakano and Morita, 2007, 2008; Nakano et al, 2009b) and total digestible nutrient (Nakano et al, 2009a, 2010, 2011), but this requires a long growth duration. It is best suited to the southern part of southwestern Japan, where the climate is warmer than in the northern part.…”

Section: Resultsmentioning

confidence: 99%

Yield Response to Cultivar and Sowing Pattern in High‐Yielding Rice

Nakano

Tsuchiya

2012

Crop Science

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Forage rice (Oryza sativa L.) has attracted attention as a potential crop in Japan, but no optimal agricultural product system has been extensively established. The objective of this study was to determine the effects of cultivar (high‐yielding indica cultivar Hokuriku 193, high‐yielding indica‐japonica hybrid cultivar Mizuhochikara, or standard japonica cultivar Akisayaka) and sowing pattern (broadcast or drilling) on grain yield using a new sowing machine for a well‐drained paddy field. Hokuriku 193 had the highest grain yields. Hokuriku 193 and Mizuhochikara had much more spikelets than Akisayaka. Hokuriku 193 and Akisayaka had a higher percentage of filled spikelets than Mizuhochikara. At full heading, Hokuriku 193 had the highest nonstructural carbohydrate (NSC) amount. Thus, the high NSC amount of Hokuriku 193 supported a high grain yield and high percentage of filled spikelets in spite of its very many spikelets. Broadcast gave a higher rough grain yield, grain yield, and number of panicles than that of drilling, but it had no effect on the percentage of filled spikelets or the 1000‐grain weight. At full heading, broadcast gave a higher NSC amount than drilling. Therefore, broadcast of high‐yielding indica or indica‐japonica hybrid cultivars might increase grain yield, in spite of its very high panicle number, without decreasing the percentage of filled spikelets or the 1000‐grain weight by increasing the NSC amount at full heading.

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Section: Resultsmentioning

confidence: 99%

Yield Response to Cultivar and Sowing Pattern in High‐Yielding Rice

Nakano

Tsuchiya

2012

Crop Science

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“…Some studies have indicated that hulls of forage rice harvested at yellow‐ripe can restrict cattle’s ( Bos taurus ) ability to digest the grains (Hara et al, 1986; Nakui et al, 1988; Hosoda et al, 2005). Hence, cultivars and cultivation methods for increasing the ratio of leaf plus stem DW to whole plant DW have been developed (Kato, 2008; Nakano et al, 2008, 2010, 2011a, 2011b; Nakano and Morita, 2009; Kato et al, 2010). Similarly, some scientists reported that hulls of forage barley harvested from soft dough to maturity restricted cattle’s ability to digest the grains (Ogawa et al, 1974; Tobino et al, 1976).…”

Section: Resultsmentioning

confidence: 99%

“…In the northern part of southwestern Japan, forage rice is transplanted in June and harvested in October, and food wheat ( Triticum aestivum L.) or food barley is then seeded in November and harvested in May. In the southern part of southwestern Japan, double harvesting (i.e., ratooning) of forage rice, which produces very high DM and TDN yields, is currently being practiced using a recently developed technique (Nakano and Morita, 2007, 2008; Nakano et al, 2009, 2010, 2011b). In this system, forage rice is transplanted in late April, the first crop is harvested in late July, and the second crop is harvested in late October.…”

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confidence: 99%

Yield and Nutritive Value Responses of Forage Barley Cultivars and Lines

Nakano¹,

Kawada²,

Hattori³

et al. 2013

Agronomy Journal

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Forage barley (Hordeum vulgare L.) has attracted attention as a potential crop in Japan; however, promising cultivars and lines have not been selected and selection criteria for breeding have not been found. This study aimed to determine the effects of cultivars and lines (Wasedorinijyo, Saikaikawa 67, Saikaihadaka 68, Hakei B 0878, Hakei B 0879, and Nishinochikara) on dry matter (DM) yield and nutritive value in southwestern Japan. In the 2010–2011 crop season at heading and soft dough, Hakei B 0879 had similar DM yield to the other cultivars and lines used. However, in the 2011–2012 crop season, Hakei B 0879 had the highest number of tillers and the highest DM yield among all the cultivars and lines. The number of emerged seedlings of Hakei B 0879 was much higher in the 2011–2012 crop season than in the 2010–2011 crop season. Thus, in the 2010–2011 crop season at soft dough, the DM yield of Hakei B 0879 was reduced because of the lower number of tillers. To stabilize the DM yield of Hakei B 0879, improved seedling emergence and growth at early stages could be important. In both crop seasons at heading and soft dough, DM yield was positively correlated with the number of tillers and leaf plus stem dry weight (DW). In addition, in both crop seasons at heading, the in vitro dry matter digestibly (IVDMD) concentration of Saikaikawa 67 was higher than, or similar to, those of the other cultivars and lines used because of the lower neutral detergent fiber (NDF) concentration. These results suggest that spike‐number type cultivars may be more suitable for forage barley than spike‐weight type cultivars and the number of tillers could be a selection criteria for breeding.

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“…In southwestern Japan, double harvesting (by ratooning) that results in very high DM and TDN yields is currently being practiced using the forage rice cultivar "Ruriaoba" (Sakai et al 2013). The effects of harvest time of the first crop, nitrogen (N) management, cutting height of the first crop, and equipment traffic treatment of the first crop on DM yield and TDN concentration have been examined in the double harvesting of Ruriaoba, and a new cultivation method *Corresponding author: e-mail nakanohr@affrc.go.jp Received 19 November 2018;accepted 4 March 2019. for increasing DM and TDN yields has been developed (Nakano & Morita 2008;Nakano et al 2009;Nakano et al 2010;Nakano et al 2011). Moreover, a new cultivation method for the seed production of Ruriaoba has recently been proposed (Nakano et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Dry Matter Yield Response to Seeding Rate and Row Spacing in Direct-seeded and Double-harvested Forage Rice

Nakano

Hattori

Morita

2019

JARQ

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Forage rice (Oryza sativa L.) must be cost competitive with other fodders, and thus an important goal is increasing its dry matter (DM) and total digestible nutrient (TDN) yields, while reducing labor and costs. Although the direct seeding of rice does not have higher yield stability than transplanting, it has the potential to reduce labor and costs. The objective of this study was to determine the effects of seeding rate (2, 4, or 6 g m -2 ) and row spacing (10 or 30 cm) on DM and TDN yields in direct-seeded and double-harvested forage rice in a well-drained paddy field. The seeding rate did not affect the total DM and TDN yields of the first and second crops, although those total yields were higher at 10 cm row spacing than at 30 cm row spacing. The DM yield and tiller number of the first crop increased with increasing seeding rate. Both were higher at 10 cm row spacing than at 30 cm row spacing. The seeding rate did not affect the DM and TDN yields of the second crop harvested at heading, although those yields were higher at 10 cm row spacing than at 30 cm row spacing. Neither seeding rate nor row spacing affected the DM and TDN yields of the second crop harvested at dough ripe. Thus, increasing the seeding rate is effective for increasing the DM and TDN yields of the first crop and reducing row spacing is effective for increasing total DM and TDN yields of the first and second crops. This cultivation method is expected to facilitate forage rice production by reducing labor and costs in temperate regions.

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Effects of Cutting Height of the First Crop on Estimated Total Digestible Nutrient Concentration and Yield in Double‐Harvested Rice

Cited by 11 publications

References 8 publications

Yield Response to Cultivar and Sowing Pattern in High‐Yielding Rice

Yield Response to Cultivar and Sowing Pattern in High‐Yielding Rice

Yield and Nutritive Value Responses of Forage Barley Cultivars and Lines

Dry Matter Yield Response to Seeding Rate and Row Spacing in Direct-seeded and Double-harvested Forage Rice

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