Establishment rate of direct-seeded rice in the relay-intercropping system in Kanto region of Japan

Improved stand establishment of direct-seeded crops has usually involved seed treatment and/or seed covers. Planters have been evaluated for seed/plant spacing uniformity, singulation, furrow openers, and presswheel design; however, effects of presswheels and seed coverers on plant establishment have not been widely investigated. Five experiments were conducted in a fine sandy loam soil to determine effect of presswheels and seed coverers on emergence of direct-seeded cabbage and mustard. Seed were planted with Stanhay 870 seeder equipped with one of four presswheels and seed coverers. Presswheels included smooth, mesh, concave split, and flat split types. Seed coverers included standard drag, light drag, paired knives, and no coverer. Soil moisture at planting ranged from 8% to 19% in the top 5 cm of bed. Differences in plant counts taken 2 weeks after planting were minimal with any presswheel or seed coverer. Visual observation indicated the seed furrow was more completely closed with the knife coverer in high soil moisture conditions. All tests received at least 14 mm of precipitation within 6 days from planting, which may account for lack of differences in plant emergence.

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Performance of Isogenic Soybean Lines in Monoculture and Relay Intercropping Environments 1

Crop Science ◽

10.2135/cropsci1981.0011183x002100050009x ◽

1981 ◽

Vol 21 (5) ◽

pp. 669-672 ◽

Cited By ~ 6

Author(s):

R. L. McBroom ◽

H. H. Hadley ◽

C. M. Brown

Keyword(s):

Relay Intercropping

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Farmers Perception in Adoption of Conservation Agriculture Practices in Madhubani District of Bihar, India

Journal of AgriSearch ◽

10.21921/jas.v4i04.10211 ◽

2017 ◽

Vol 4 (04) ◽

Author(s):

YUJJWAL KUMAR ◽

RAMESH CHANDRA BHARATI ◽

RAVI KANT CHAUBEY ◽

K. K. RAO ◽

VED PRAKASH ◽

...

Keyword(s):

Conservation Agriculture ◽

Decision Processes ◽

Zero Tillage ◽

Focus Group Discussions ◽

Group Discussions ◽

Male And Female ◽

Female Farmers ◽

Direct Seeded ◽

Herbicide Use ◽

Bihar State

The study has been conducted in Madhubani district of Bihar state to analyse gender segregated key benefits, advantages, disadvantages, issues and the key decision processes and criteria for conservation agriculture technologiesadoption. Data were collected through focus group discussions involving male and female farmers. Cent per cent farmers expressed saving of labour and reduction in drudgery in Zero Tillage Direct Seeded Rice (ZTDSR). Higher yield through adoption of ZTDSR was revealed by equal percentage (75 %) of male and female farmers. Equal percentage (100 %) of male and female farmers expressed labour saving as one of the most important criteria for adoption of the ZT. Gender segregated data showed almost similar perception related to criteria adoption of ZT technology in rice-wheat system. All the female groups expressed that limited knowledge of herbicide use restricts adoption of ZTDSR. All the female groups were in the view that there is reduction of drudgery through adoption of mechanical paddy transplanter. Preparation of mat type nursery was top most disadvantages for 90 and 70 % male and female groups respectively. Eighty percent farmers groups expressed their opinion that non availability of trained tractor drivers for machine operation limits adoption of ZT machine. Preparation of mat nursery and trained operators for paddy transplanter was major criteria for adoption of mechanical paddy transplanter. There was contradiction in the perception among male and female farmers with respect to yield advantage and associated risk for poor yield due to the adoption of CA technologies.

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Dry matter partitioning as influenced by drip irrigation and fertigation levels in direct seeded scented rice

International Journal of Chemical Studies ◽

10.22271/chemi.2020.v8.i5ak.10718 ◽

2020 ◽

Vol 8 (5) ◽

pp. 2667-2669

Author(s):

Samarth Tewari ◽

Gurvinder Singh ◽

Avikal Kumar ◽

Narendra Bhandari ◽

Saurabh Gangola

Keyword(s):

Drip Irrigation ◽

Dry Matter ◽

Dry Matter Partitioning ◽

Direct Seeded

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Does direct-seeded rice performance improve upon lime and phosphogypsum use?

Soil and Tillage Research ◽

10.1016/j.still.2021.105055 ◽

2021 ◽

Vol 212 ◽

pp. 105055

Author(s):

Vanderson Modolon Duart ◽

Fernando José Garbuio ◽

Eduardo Fávero Caires

Keyword(s):

Direct Seeded

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A study of atmospheric ammonia by means of modeling analysis in the Kanto region of Japan

Atmospheric Environment ◽

10.1016/j.atmosenv.2004.09.051 ◽

2005 ◽

Vol 39 (2) ◽

pp. 203-210 ◽

Cited By ~ 6

Author(s):

Tatsuya Sakurai ◽

Shin-ichi Fujita ◽

Hiroshi Hayami ◽

Noritaka Furuhashi

Keyword(s):

Atmospheric Ammonia ◽

Modeling Analysis ◽

Kanto Region

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Seed Priming with Potassium Nitrate and Gibberellic Acid Enhances the Performance of Dry Direct Seeded Rice (Oryza sativa L.) in North-Western India

Agronomy ◽

10.3390/agronomy11050849 ◽

2021 ◽

Vol 11 (5) ◽

pp. 849

Author(s):

Buta Singh Dhillon ◽

Virender Kumar ◽

Pardeep Sagwal ◽

Navjyot Kaur ◽

Gurjit Singh Mangat ◽

...

Keyword(s):

Gibberellic Acid ◽

Grain Yield ◽

Oryza Sativa L ◽

Seed Priming ◽

Potassium Nitrate ◽

Growth And Yield ◽

Western India ◽

Yield Attributes ◽

Crop Establishment ◽

Direct Seeded

Poor early growth and uneven crop establishment are reported as the major bottlenecks in wide-scale adoption and optimal yield realization of dry direct-seeded rice (DSR). Seed priming can potentially help overcome these problems in DSR. Therefore, laboratory and field studies were conducted at Punjab Agricultural University, Ludhiana, India, during kharif/wet-season 2018 and 2019 to evaluate the effect of different priming techniques on germination, establishment, growth, and grain yield of rice under DSR conditions. The following priming treatments were evaluated: dry non-primed seed (control), hydropriming with distilled water, halopriming with 2.0% potassium nitrate, hormopriming with 50 ppm gibberellic acid (GA3), and osmopriming with polyethylene glycol (PEG)(−0.6 MPa), each with 12 and 24 h priming duration. In 2019, priming treatments were tested under two DSR establishment methods—conventional DSR (sowing in dry soil followed by irrigation) and soil mulch DSR (locally known as vattar DSR) (sowing in moist soil after pre-sowing irrigation), whereas in 2018, priming treatments were evaluated under conventional DSR only. In both years, halopriming and hormopriming resulted in a 7–11% increase in rice yields compared to non-primed dry seed (control). Osmopriming resulted in a 4% yield increase compared to control in 2018 but not in 2019. The higher yields in halopriming and hormopriming were attributed to higher and rapid germination/crop emergence, better root growth, and improvement in yield attributes. Priming effect on crop emergence, growth, and yield did not differ by DSR establishment methods and duration of priming. Conventional DSR and soil mulch DSR did not differ in grain yield, whereas they differed in crop emergence, growth, and yield attributes. These results suggest that halopriming with 2.0% potassium nitrate and hormopriming with 50 ppm GA3 has good potential to improve crop establishment and yield of rice in both conventional and soil mulch DSR systems.

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