How Does Water Stress and Nitrogen Fertilizer Affect the Growth and Yield of Upland Rice (&lt;i&gt;Oryza Sativa&lt;/i&gt; L.)

Alibu, Simon; Fofana, Mamadou

doi:10.12691/jfnr-9-4-7

Cited by 2 publications

(3 citation statements)

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“…Rampant weeds in rice fields have become the most critical factor restricting the yield and quality of rice [3,4,12,13]. In China, rice farmers prefer herbicides to other methods to control weeds because the simplicity of operation in agricultural production is their first choice.…”

Section: Discussionmentioning

confidence: 99%

“…Rice has high nutritional value that can provide the human body with approximately 27% dietary energy, 20% protein, and 3% fat; it also contains zinc, riboflavin, thiamine, and niacin, which can only be obtained through dietary intake [2]. The yield and quality of rice are affected by many factors, including water, nutrients, temperature, and weeds [3]. In fact, rice has been exposed to the recurrent invasion of weeds since its cultivation, becoming the most critical obstacle in rice production.…”

Section: Introductionmentioning

confidence: 99%

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Differences in the Mode of Action of Florpyrauxifen-Benzyl between Barnyardgrass and Yerbadetajo

Gao

Shen

et al. 2022

Agronomy

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Barnyardgrass (a monocotyledon) and yerbadetajo (a dicotyledon) are the most troublesome weeds in rice fields in China. The synthetic auxin herbicide florpyrauxifen-benzyl can effectively control both weeds. The objective of this research was to clarify modes of action of florpyrauxifen-benzyl in barnyardgrass and yerbadetajo. Our results showed that yerbadetajo was more sensitive to florpyrauxifen-benzyl than barnyardgrass: the 50% growth rate inhibition in barnyardgrass and yerbadetajo was 4.14 and 0.38 g a.i. ha−1, respectively. Florpyrauxifen-benzyl induced the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) and abscisic acid (ABA) in yerbadetajo within 24 h, while in barnyardgrass, the highest production occurred at 12 h and decreased at 24 h. ACC and ABA levels in yerbadetajo at 24 h of treatment were significantly higher than those in barnyardgrass at any time. There were less differentially expressed genes related to ethylene and ABA synthesis in barnyardgrass than in yerbadetajo. There were five genes induced to increase by florpyrauxifen-benzyl in barnyardgrass and eleven genes in yerbadetajo. More ACC oxidase genes (ACO) were induced in barnyardgrass and more ACC synthesis genes (ACS) in yerbadetajo, especially three ACS3 (>30 fold). We speculated that differences in gene expression caused differences in ethylene and ABA production, leading to differences in phytotoxicity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Differences in the Mode of Action of Florpyrauxifen-Benzyl between Barnyardgrass and Yerbadetajo

Gao

Shen

et al. 2022

Agronomy

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“…Likewise, the average rice yield at the low end of the irrigation system at 2.5 t/ha is lower than at the high end at 2.7 t/ha during the second season [5]. Water scarcity is most problematic during the flowering phase, where it reduces rice yield the most [5,42]. Therefore, aware of the critical growth stages when water shortages must be avoided in rice, and to ensure equitable water distribution, a water allocation model was developed that allows two days of irrigation per week during land preparation, early crop development, and before harvest and three days per week during the late vegetative and reproductive growth stages [25].…”

Section: Case Study Findingsmentioning

confidence: 99%

Modest Ag-Extension and Access to Seeds of Aromatic Rice Can Boost Returns of Smallholder Farmers in Uganda, A Case Study

et al. 2022

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Limited farmer access to quality seeds of improved varieties and knowledge gaps in good agronomic practices are the major factors limiting rice productivity among smallholder farmers in Uganda. Promoting high yielding aromatic rice varieties alongside good agronomic practices can unlock commercial opportunities for smallholder farmers in rice cultivation, given that 80% of rice consumers in Uganda prefer aromatic rice, which is in short supply. This case study highlights a project’s achievements to accelerate the adoption of improved aromatic rice varieties among smallholder farmers in Uganda. This project supported a few selected farmers with the seed of a new aromatic rice variety, NARORICE-1, and equipped them with agronomic skills to raise their yields from an average of 3.1 to 4.1 t/ha. Line transplanting was identified as a crucial technology to increase rice yields among smallholders. Costly and inaccessible crop-enhancing inputs such as seeds and fertilizers, and an unfair distribution of irrigation water were the two main obstacles farmers face in rice production. Farmers valued NARORICE-1 for its aroma, high yield, and early maturity. The project’s training of a community seed producer improved farmers’ access to NARORICE-1 seeds, increasing its adoption by 20% in two years. NARORICE-1 is much more in demand than any other variety and attracts a better price, making it an ideal innovation for increasing productivity and farmer’s incomes. An effective seed system and continuous farmer training are vital for accelerating impact.

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How Does Water Stress and Nitrogen Fertilizer Affect the Growth and Yield of Upland Rice (<i>Oryza Sativa</i> L.)

Cited by 2 publications

References 0 publications

Differences in the Mode of Action of Florpyrauxifen-Benzyl between Barnyardgrass and Yerbadetajo

Differences in the Mode of Action of Florpyrauxifen-Benzyl between Barnyardgrass and Yerbadetajo

Modest Ag-Extension and Access to Seeds of Aromatic Rice Can Boost Returns of Smallholder Farmers in Uganda, A Case Study

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