Puddled and zero-till unpuddled transplanted rice are each best suited to different environments – An example from two diverse locations in the Eastern Gangetic Plains of Bangladesh

Chaki, Apurbo Kumar; Gaydon, Donald S.; Dalal, Ram C.; Bellotti, William D; Gathala, Mahesh K.; Hossain, Akbar; Siddquie, Nur-E-Alam; Menzies, Neal W.

doi:10.1016/j.fcr.2020.108031

Cited by 14 publications

(10 citation statements)

References 65 publications

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“…However, similar rice yield under puddled transplanted rice and unpuddled transplanted rice under zero tilled condition was reported in the Eastern gangetic plains [27]. Also, there was a trend of increasing grain yield in zero tilled unpuddled transplanted rice over that of puddled transplanted rice in the second season [28]. The practice of transplanting on unpuddled soil, suitable for low land areas, is a potential technology for those farmers who are skeptical about direct-seeded rice to avoid adverse effect of puddling on succeeding wheat crop.…”

Section: Non Puddled/unpuddled Transplanted Ricesupporting

confidence: 70%

Recent Advances in Crop Establishment Methods in Rice-Wheat Cropping System: A Review

Das¹,

Singh²,

Kumari³

et al. 2021

Cereal Grains - Volume 2

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Traditional practices of growing rice and wheat in Asian countries involve a huge cost in establishment methods adopted by farmers which not only limit the yield and return but also degrade soil and require more water. Adaptation of improved crop establishment methods suitable under adverse climatic conditions is of utmost importance for scientific utilization of natural resources and to maintain the sustainability of rice- wheat cropping system Therefore, an attempt has been made in this chapter to review precision rice establishment methodology viz., direct seeding, non-puddle/unpuddled transplanting, bed transplanting, strip tilled and single pass shallow tilled rice, double transplanting and system of rice intensification (SRI) and wheat establishment methods viz., zero tilled, strip tilled and bed planted wheat. These are recent improved crop establishment techniques that can be used under specific agro-ecological conditions for enhancing yield and resource conservation in Indo-gangetic plains of Eastern India.

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Section: Non Puddled/unpuddled Transplanted Ricesupporting

confidence: 70%

Recent Advances in Crop Establishment Methods in Rice-Wheat Cropping System: A Review

Das¹,

Singh²,

Kumari³

et al. 2021

Cereal Grains - Volume 2

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“…According to the Köppen climate classification system, the climate of both sites is characterized by hot and humid summers, and cool winters with an average annual rainfall of about 1450 mm, most of which falls from June to October (Chaki et al, 2021). January is the coldest month while April and May are the hottest.…”

Section: Site Characteristicsmentioning

confidence: 99%

Conservation agriculture effects on yield and profitability of rice-based systems in the Eastern Indo-Gangetic Plain

Islam

Bell²,

Johansen³

et al. 2022

Ex. Agric.

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Sustaining productivity of the rice-based cropping systems in the Eastern Indo-Gangetic Plain (EIGP) requires practices to reverse declining soil fertility resulting from excessive tillage and crop residue removal, while decreasing production costs and increasing farm profits. We hypothesize that the adoption of conservation agriculture (CA), involving minimum tillage, crop residue retention and crop rotation, can address most of these challenges. Therefore, the effects of crop establishment methods – strip planting (SP), bed planting (BP) and conventional tillage (CT); and levels of crop residue retention – high residue (HR) and low residue (LR) on individual crop yield, system yield and profitability were evaluated in a split-plot design over three cropping seasons in two field experiments (Alipur and Digram sites) with contrasting crops and soil types in the EIGP. The SP and BP of non-rice crops were rotated with non-puddled rice establishment; CT of non-rice crops was rotated with puddled transplanted rice. In the legume-dominated system (rice-lentil-mung bean), lentil yields were similar in SP and CT, while lower in BP in crop season 1. A positive effect of high residue over low residue was apparent by crop season 2 and persisted in crop season 3. In crop season 3, the lentil yield increased by 18–23% in SP and BP compared to CT. In the cereal-dominated system (rice-wheat-mung bean), significant yield increases of wheat in SP and BP (7–10%) over CT, and of HR (1–3%) over LR, were detected by crop season 3 but not before. Rice yields under CA practices (non-puddled and HR) were comparable with CT (puddled and LR) in both systems. Improved yield of lentil and wheat with CA was correlated with higher soil water content. The net income of SP increased by 25–28% for dry season crops as compared to CT and was equal with CT for rice cropping systems. Conservation agriculture practices provide opportunities for enhancing crop yield and profitability in intensive rice-based systems of the EIGP of Bangladesh.

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“…Recent years have seen a move from flooded rice to AWD (Ishfaq et al 2020), so pan properties may be more important to consider as deep rooting will benefit crop performance (Fang et al 2018). There is also a shift towards conservation agriculture in rice where reduced tillage will leave more macropores for roots to exploit (Chaki et al 2021).…”

Section: Rice Root Responded Differently To Different Types Of Macroporesmentioning

confidence: 99%

Contrasting ability of deep and shallow rooting rice genotypes to grow through plough pans containing simulated biopores and cracks

2021

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Aims Cracks and biopores in compacted soil such as plough pans could aid deep rooting, mitigating constraints to seasonal upland use of paddy fields for rice production. This research investigated how soil macropores through a simulated plough pan affects root growth of contrasting deep and shallow rooting rice genotypes. Methods Deep rooting Black Gora and shallow rooting IR64 rice varieties were grown in packed cores of unsaturated soil in a controlled greenhouse. Simulated biopores and cracks (macropores) were inserted through the plough pan to form treatments with no macropores, biopores, cracks, and combined cracks and biopores. Different root parameters such as root length density (RLD), root volume, root diameter, number of root tips and branches were measured. The number of roots was calculated manually, including the number of roots growing through macropores in the plough pan layer. Results Plough pans with macropores had 25–32% more roots than with no macropores. RLD was 55% greater in the plough pan layer if cracks were present compared to biopores. Conversely, RLD was 26% less in subsoil if the plough pan had cracks compared to biopores. Different root parameters were greatly influenced by the presence of macropores in the plough pan, and deep-rooted Black Gora produced 81% greater RLD, 30% more root numbers and 103% more branching than the shallow rooted rice genotype IR64 within the plough pan layer. Conclusions Macropores greatly improve rice root growth through plough pans for a deep rooting but not a shallow rooting rice variety. Whereas cracks produce a greater number of roots in the plough pan, biopores result in greater root branching and root numbers deeper in subsoil.

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Puddled and zero-till unpuddled transplanted rice are each best suited to different environments – An example from two diverse locations in the Eastern Gangetic Plains of Bangladesh

Cited by 14 publications

References 65 publications

Recent Advances in Crop Establishment Methods in Rice-Wheat Cropping System: A Review

Recent Advances in Crop Establishment Methods in Rice-Wheat Cropping System: A Review

Conservation agriculture effects on yield and profitability of rice-based systems in the Eastern Indo-Gangetic Plain

Contrasting ability of deep and shallow rooting rice genotypes to grow through plough pans containing simulated biopores and cracks

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