Yield and nitrogen use efficiency of aromatic rice varieties in response to nitrogen fertilizer

Djaman, Koffi; Vincent, Bado B; Valere, Mel C

doi:10.9755/ejfa.2015-05-250

Cited by 18 publications

(8 citation statements)

References 27 publications

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“…Islam et al (2016) reported that 1000 grain weight is stable, important yield determining the character and influenced by the environment that differed significantly among the cultivars due to genetic make-up which supported the present experimental result. A similar result was reported by (Djaman et al, 2016). Table 2 showed that the influence of different treatments of organic, inorganic, and their combinations on 1000 grain weight (g) was significant.…”

Section: Grain Weight (G) On Varieties and Fertilizer Dosessupporting

confidence: 85%

Growth and Yield Performance of Aromatic Fine Rice as Influenced by Varieties and Fertilizer Managements

Islam

Roshid

Sikdar

et al. 2021

J. appl. agricultural sci. technol.

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This Research was conducted to investigate the effect of fertilizer management on growth and yield performance of aromatic fine rice varieties. The experiment consisted of two factors were aromatic fine rice and fertilizer management. There were four varieties namely Kalizira, Kataribhog, Tulshimala and BRRI Dhan34 with four fertilizer treatments recommended dose of fertilizers (T1), cowdung @ 10 tha-1 (T2), 50% of recommended dose of fertilizers + 50% cowdung(T3), 75% of recommended dose of fertilizers + 50% cowdung (T4). The result showed that BRRI Dhan 34 significantly superior for effective tillers number/ hill (18.46), panicles length (26.67cm), grains number/ panicle (146.30), harvest index (40.73 %), grain protein content (6.23%), grain yield (2.79 tha-1), straw yield (4.06 tha-1), and biological yield (6.85 tha-1). Among fertilizer management, the highest effective tillers number/hill (16.20), grains number/ panicle (142.45, panicles length (26.66 cm),1000 grain weight (13.75), grain protein content (10.2%), biological yield (6.30), were obtained from T3 treatment. Based on interaction effect showed that the highest effective tillers number/hill (18.36), grains number/ panicle (155.33), panicles length (26.73 cm), grain protein content (10.80%), biological yield (7.85) was found with BRRI Dhan 34 combined with T3 treatment. However, grain yield increased with the increase in nitrogen levels. Together tillers number/hill, grains number/panicle, grain protein content, harvest index, grain yield was the main responsible yield contributing characters to improve the yield quality of aromatic fine rice.

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Section: Grain Weight (G) On Varieties and Fertilizer Dosessupporting

confidence: 85%

Growth and Yield Performance of Aromatic Fine Rice as Influenced by Varieties and Fertilizer Managements

Islam

Roshid

Sikdar

et al. 2021

J. appl. agricultural sci. technol.

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“…The second definition of NUE is the efficiency with which nitrogen applied to soils, through natural or artificial means, is taken up by plants and not used for other purposes such as feeding anaerobic bacteria that cause denitrification or leeching via nitrogen dissolution in water [21]. Nitrogen dissolution in water is often caused by over-application of fertilizers, excessive soil drainage (often caused by a lack of organic material), or inclined growing [22].…”

Section: What Is Nue and How Can It Be Managed?mentioning

confidence: 99%

A Review of Methods to Improve Nitrogen Use Efficiency in Agriculture

2017

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Management of nitrogen (N) is a challenging task and several methods individually and in combination are in use to manage its efficiency. However, nitrogen use efficiency (NUE) has not been improved to a level, only 33%, as predicted by the researchers while developing nitrogen management tools and methods. The primary objective of this review article is to evaluate methods and tools available to manage nitrogen. Several methods, soil testing, plant tissue testing, spectral response, fertilizer placement and timing and vegetative indexes (leaf area index, and NDVI) through drones, handheld sensors, and satellite imagery were reviewed on the subject of user-friendly and effectiveness towards NUE. No single method was found sufficient to counter the nitrogen loss. Some methods were found time consuming and unsynchronized with N uptake behavior of particular crop, for example, plant tissue testing. Use of precision agriculture tools, such as GreenSeeker, Holland Crop Circle, drone, and satellite imagery, were found better compared to conventional methods such as soil testing, but these tools can only be used when the crop is up. Therefore, N management is possible only through inseason N application methods. When 70% of the applied nitrogen is used by the crops within 25-30 days after planting, for example, corn and potatoes, it is required to apply major N rates through inseason approach and some N at planting using soil test reports. In conclusion, this article strongly advocates using two or more methods in combination when managing N.

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“…In some settings, studies suggest that increasing fertiliser dosage does not significantly increase yields of aromatic varieties, and that any response to N application levels out earlier than with non-aromatic varieties (Aziz & Kashem, 2017). Based on farm trials on four aromatic rice varieties in Senegal, Koffi et al (2016) show that while rice yields rise with increasing nitrogen input at low levels, fertiliser partial factor productivity decreases progressively with incremental levels of nitrogen from 60 to 150 kg/ ha. Although response functions to fertiliser are highly context-and genotype-specific, low fertiliser recovery efficiency in fine grain rice at high input levels is relatively well documented (Emran et al, 2019;Oo et al, 2007;Shivay et al, 2016) and decreases in partial factor productivity could be even more steep compared to other varieties.…”

Section: Hypothesismentioning

confidence: 99%

Can information constraints explain the low efficiency in premium quality rice cultivation? Evidence from smallholder farmers in Bangladesh

Kubitza,

Veettil,

Gupta

et al. 2024

J Agricultural Economics

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The integration of smallholder farmers into emerging value chains for fine‐grain and aromatic ‘premium quality rice’ (PQR) could prove to be crucial to improving rural livelihoods in Bangladesh, though efforts could be constrained by farmers' differing levels of agronomic knowledge. Based on a pre‐analysis plan, we analyse farmers' ability to efficiently allocate production enhancing inputs in PQR cultivation based on a survey of 1420 farmers in key PQR producing areas. Farmers received a hypothetical budget to allocate to six different inputs advised for efficient production of PQR, mimicking familiar production decisions made seasonally on their own farms. Our results suggest that even without budget or input access constraints farmers tend to inefficiently allocate inputs in PQR in this hypothetical setting. In particular, they tend to overspend on seeds, fertiliser and pesticides. Farmers with better access to agricultural information, such as through PQR specific extension services, conversely reach substantially higher efficiency scores and decided to spend significantly less on fertiliser. Without future adjustments such as more targeted extension services, implied higher production costs will likely lower the profitability of PQR cultivation for smallholder farmers, thereby limiting potential income gains. Besides these economic concerns, excessive input use is associated with environmental externalities. Improved efficiency is therefore desirable from both an economic and environmental standpoint.

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Yield and nitrogen use efficiency of aromatic rice varieties in response to nitrogen fertilizer

Cited by 18 publications

References 27 publications

Growth and Yield Performance of Aromatic Fine Rice as Influenced by Varieties and Fertilizer Managements

Growth and Yield Performance of Aromatic Fine Rice as Influenced by Varieties and Fertilizer Managements

A Review of Methods to Improve Nitrogen Use Efficiency in Agriculture

Can information constraints explain the low efficiency in premium quality rice cultivation? Evidence from smallholder farmers in Bangladesh

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