Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.2
3.7
Journals
Agronomy
Special Issues
Agronomy of Direct-Seeded Rice
share announcement

Agronomy of Direct-Seeded Rice

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Innovative Cropping Systems".

Deadline for manuscript submissions: closed (25 August 2022) | Viewed by 9951

Special Issue Editors

Prof. Dr. Bhagirath S. Chauhan

E-Mail Website
Guest Editor
Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Gatton, QLD 4343, Australia
Interests: weed biology; seed biology; IWM; non-chemical approaches; crop competition; cultural approaches
Special Issues, Collections and Topics in MDPI journals
Dr. Gulshan Mahajan

E-Mail Website
Guest Editor
Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Gatton, QLD 4343, Australia
Interests: agronomy; water management; weed management; rice physiology

Special Issue Information

Dear Colleagues,

Rice is grown in more than 100 countries, but more than 90% of rice is grown and consumed in Asia. Traditionally, rice has been grown using transplanted methods, but now, due to the laboriousness of this process and water shortage, there has been a trend toward direct seeding (dry, wet, or water seeding) of rice. In some countries, however, the agronomy of direct-seeded rice is still not well understood. This Special Issue welcomes review and research articles on different agronomic aspects (water management, weed management, genotype performance, nutrient management, seeding rate, row spacing, innovations, etc.) of direct-seeded rice. In addition, grain quality traits influenced by agronomic practices will also be addressed.

Prof. Dr. Bhagirath S. Chauhan
Dr. Gulshan Mahajan
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fertilizer
  • grain quality
  • nitrogen
  • variety
  • water management
  • weed biology
  • weed management

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

21 pages, 1519 KiB  
Article
Genetic Evaluation of a Diverse Rice Panel for Direct Seeded Adapted Traits Using Kompetitive Allele Specific Primer Assay
by Harpreet Singh, Jasneet Singh, Pooja Ankush Ade, Om Prakash Raigar, Rupinder Kaur, Renu Khanna, Gurjit Singh Mangat and Nitika Sandhu
Agronomy 2022, 12(9), 2083; https://doi.org/10.3390/agronomy12092083 - 01 Sep 2022
Cited by 1 | Viewed by 2176
Abstract
Direct seeded rice (DSR) cultivation is an attractive non-conventional technology for growing rice. It saves labor, water, energy, and takes 5 to 7 days for early crop maturity. The yield advantage in DSR can be obtained by implementing various cultural practices including proper [...] Read more.
Direct seeded rice (DSR) cultivation is an attractive non-conventional technology for growing rice. It saves labor, water, energy, and takes 5 to 7 days for early crop maturity. The yield advantage in DSR can be obtained by implementing various cultural practices including proper sowing time and seed rate, selection of suitable cultivars with appropriate management of weeds and water. The present study involves the agronomic and molecular screening of advanced breeding lines under direct seeded as well as transplanted conditions, so as to identify DSR adapted genotypes. Significant variations among genotypes have been observed for most of the traits measured in the present study. The yield under DSR was comparable to TPR but the grain quality was not comparable, and poor milling and head rice recovery were observed. Molecular characterization using 106 Kompetitive Allele-Specific PCR assays (KASP) was performed. The best performing genotypes with different allele combinations under DSR were PAU 6456-8-2-1-1-1, PAU 5187-RIL1649-F8, PAU 6456-8-1-1-1-3, PAU 6456-8-2-1-1-2, NVSR 2107, and PAU 6778-12-1-4-1-1. The selected genotypes performed better in terms of traits associated with seedling establishment, root architecture, yield, and yield-related traits. The identified promising breeding lines may serve as novel donors to be further used in a marker-assisted selection program which target improving the grain yield and adaptability under DSR. Full article
(This article belongs to the Special Issue Agronomy of Direct-Seeded Rice)
►▼ Show Figures

Figure 1

13 pages, 2150 KiB  
Article
Screening of Herbicides for Rice Seedling Safety and Echinochloa colona Management under Australian Conditions
by Gulshan Mahajan and Bhagirath S. Chauhan
Agronomy 2022, 12(6), 1273; https://doi.org/10.3390/agronomy12061273 - 26 May 2022
Cited by 4 | Viewed by 2431
Abstract
Different herbicides are currently required for sustainable weed management in aerobic rice. Three pot experiments were conducted using different herbicides to evaluate rice safety and for the control of Echinochloa colona, a major weed of aerobic rice. Among the pre-emergence (PRE) herbicides, [...] Read more.
Different herbicides are currently required for sustainable weed management in aerobic rice. Three pot experiments were conducted using different herbicides to evaluate rice safety and for the control of Echinochloa colona, a major weed of aerobic rice. Among the pre-emergence (PRE) herbicides, it was found that pendimethalin (594 g ai ha−1) and flumioxazin (60 g ai ha−1) were relatively safe herbicides for rice and provided 100% control of E. colona. All other PRE herbicides, such as atrazine, cinmethylin, clomazone, dimethenamid-P, isoxaflutole, metribuzin, prosulfocarb + S-metolachlor, pyroxasulfone, trifluralin, and S-metolachlor reduced the biomass of rice compared with the non-treated control. Dose-response studies revealed that flumioxazin and pendimethalin even at low doses (30 g ai ha−1 for flumioxazin and 294 g ai ha−1 for pendimethalin) provided excellent control (>95%) of E. colona. Post-emergence (POST) application of paraquat (360 g ai ha−1) at the time of rice emergence caused toxicity in the crop, but also provided excellent control of E. colona. When applied just after crop emergence (11 days after sowing), Pendimethalin was found to be safe for rice (2% mortality) and reduced the biomass of E. colona by 88% compared with the non-treated control. It is quite possible that the rice variety Reiziq used in this study may have a tolerance to flumioxazin, which needs further investigation involving more rice varieties. This study suggests that flumioxazin can be used as an alternative to pendimethalin for the sustainable management of E. colona in aerobic rice. Full article
(This article belongs to the Special Issue Agronomy of Direct-Seeded Rice)
►▼ Show Figures

Figure 1

15 pages, 1766 KiB  
Article
Cyperus iria Weed Growth, Survival, and Fecundity in Response to Varying Weed Emergence Times and Densities in Dry-Seeded Rice Systems
by Tahir Hussain Awan, Hafiz Haider Ali and Bhagirath Singh Chauhan
Agronomy 2022, 12(5), 1006; https://doi.org/10.3390/agronomy12051006 - 22 Apr 2022
Cited by 2 | Viewed by 2066
Abstract
Cyperus iria is amongst the most threatening weeds of rice in Sri Lanka, India, Pakistan, and the Philippines. Broad knowledge about the ecology and fecundity of C. iria is important for its effective management. Field studies were conducted over two seasons (wet (WS) [...] Read more.
Cyperus iria is amongst the most threatening weeds of rice in Sri Lanka, India, Pakistan, and the Philippines. Broad knowledge about the ecology and fecundity of C. iria is important for its effective management. Field studies were conducted over two seasons (wet (WS) and dry seasons (DS)) to investigate the influence of C. iria populations (40 and 80 plants m−2) on its growth, survival, and fertility, with four emergence times, 3, 15, 30, and 45 d after rice emergence (DARE), during 2013. We postulated that (a) higher plant density of this weed would result in more biomass production and viable seeds per unit area, (b) interference of rice would reduce the biomass production and fecundity of this weed, and (c) delaying weed emergence would lead to downsizing of its percent survival and seed bank enrichment in soil. The results indicated that rice interference decreased C. iria growth and seed production as compared with those of plants established without rice interference. A linear decrease in the percent survival of C. iria without rice and a sigmoid decrease with rice were observed during both seasons. Plant height of C. iria was moderately affected up to 30 DARE, and a significant reduction was observed at 45 DARE. There was a linear relationship between C. iria shoot dry weight and seed number plant −1, across-weed density, seeding rate of rice, and emergence time. C. iria seed production, 1000-seed weight, and seed yield were greater when seedlings emerged simultaneously with the rice crop (3 DARE) than when they emerged late. Under rice weed interference growth, the production of viable seeds was completely stopped at 45 DARE. The delay in the emergence of C. iria up to 45 DARE was unable to produce seed in both seasons. The results of the current studies advocate that the emergence, weed biomass, and seed production of C. iria can be checked by adopting suitable cultural weed management practices, which can impede the emergence of weed relative to rice. These practices, enabling the respective crops to be more competitive, will foster integrated weed management approaches, thus offering a key role in seed detection to the soil seed reservoir or pool by notorious weeds in the field. Full article
(This article belongs to the Special Issue Agronomy of Direct-Seeded Rice)
►▼ Show Figures

Figure 1

14 pages, 3326 KiB  
Article
Screening Direct Seeding-Related Traits by Using an Improved Mesocotyl Elongation Assay and Association between Seedling and Maturity Traits in Rice
by Muhammad Uzair, Suyash B. Patil, Hongrui Zhang, Ashmit Kumar, Humphrey Mkumbwa, Syed Adeel Zafar, Yan Chun, Jingjing Fang, Jinfeng Zhao, Muhammad Ramzan Khan, Shoujiang Yuan and Xueyong Li
Agronomy 2022, 12(4), 975; https://doi.org/10.3390/agronomy12040975 - 18 Apr 2022
Cited by 9 | Viewed by 2290
Abstract
Direct seeding (DS) of rice gained much attention due to labor scarcity and unavailability of water. However, reduced emergence and poor seedling establishment are the main problems of DS which causes significant yield losses. Herein, DS-associated seedling traits of three major rice groups, [...] Read more.
Direct seeding (DS) of rice gained much attention due to labor scarcity and unavailability of water. However, reduced emergence and poor seedling establishment are the main problems of DS which causes significant yield losses. Herein, DS-associated seedling traits of three major rice groups, i.e., Indica (Ind), Japonica (Jap), and aus-type (Aus), were evaluated by using an improved mesocotyl elongation assay. The associations among different traits at the seedling and maturity stage were also studied. Significant variation was observed among the cultivars of different rice groups. The Aus group cultivars showed higher mean values for coleoptile (C, 3.85 cm), mesocotyl (MC, 4.17 cm), shoot length (SL, 13.64 cm), panicle length (PL, 23.44 cm), tillers number (T, 15.95), culm length (CL, 105.29 cm), and plant height (PH, 128.73 cm), while the Indica and Japonica groups showed higher mean values of grain length (GL, 8.69 mm), grain length/width ratio (GL/WR, 3.07), and grain width (GW, 3.31 mm), with 1000 grain weight (TGWt, 25.53 g), respectively. Pairwise correlation analysis showed that MC, C, and SL were positively correlated among themselves and with PL, CL, and PH. Moreover, based on principal component analysis (PCA), C, MC, SL, CL, and PH were identified as the major discriminative factors in the rice cultivars. This study describes the development of desired DS rice variety with long MC and semidwarf in height and suggests that Aus group cultivars can be used as the donor parents of favorable DS-associated traits in rice breeding programs. Full article
(This article belongs to the Special Issue Agronomy of Direct-Seeded Rice)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop