Conventional Rice Farming Research Articles

Profitability of Organic Versus Conventional Rice Production: An Evidence from South Asia

Rice, a staple and cash crop in South Asia, is vital for small-scale farmers, but concerns about the profitability of organic farming challenge its adoption despite its environmental benefits. The present study was conducted in the Rice-Wheat zone of three South Asian countries to make a comparison of profit efficiency in rice production under organic and conventional farming systems and to examine factors affecting profit efficiency. A multistage sampling technique was employed to collect cross-sectional data. Profit efficiency was determined by employing Cobb Douglas's functional form of stochastic profit frontier. Results show that the mean profit efficiency of organic rice growers is 0.89 less than conventional rice growers (0.910) in Pakistan. The mean profit efficiencies of organic growers are higher than conventional growers in Nepal and Bangladesh. Education and the role of the extension department are important factors in increasing the efficiency of organic and conventional farming while access to credit and experience in rice farming are significant in reducing inefficiencies in conventional rice farming. The study concludes that the education of farmers, the role of extension services, and easy credit access are key policy variables to improve profit efficiency.

Advancing sustainable rice production in the Vietnamese Mekong Delta insights from ecological farming systems in An Giang Province

Rice serves as a crucial staple food crop for half of the world's population. In the Vietnamese Mekong Delta (VMD), rice production plays a vital role in national food security. However, the majority of the existing intensified rice cultivation schemes in the VMD, which are typically traditional, have rendered many farmers' livelihoods unsustainable due to issues such as land degradation, water pollution, health risks, and low profitability. Therefore, it is imperative to explore alternative sustainable farming systems. This study investigates the benefits of two ecological farming systems, specifically organic rice and rice mixed with lotus, as alternatives to conventional rice farming in the upper VMD floodplain province of An Giang. These two farming systems have demonstrated long-term socioecological and economic advantages. On the one hand, they allow the introduction of rice products to the market at more affordable prices. Additionally, they contribute to improved water quality, improved soil fertility, and increased biodiversity such as bird, fish, and plant species compared to traditional rice farming systems. Although we acknowledge that the availability of floodwater poses a significant constraint for alternative farming systems, the business opportunities and socioecological benefits associated with these systems outweigh the limitations. Our findings provide evidence that ecological farming practices that support rice cultivation represent promising alternatives to sustainable rice production, which can help mitigate vulnerabilities in intensified rice farming systems and can be scaled up for other floodplain provinces in the VMD and beyond.

ANALISIS KELAYAKAN USAHATANI PADI ORGANIK DAN KONVENSIONAL DI KECAMATAN MOJOGEDANG KABUPATEN KARANGANYAR

Rice farming is the dominant farming business in Java, one of which is Central Java. Rice is still the primadonna commodity because the staple food of most Indonesian people is rice. Currently, there is starting to be a shift from previously conventional farming techniques to organic farming to maintain soil fertility and environmental safety. This research aims to analyze the income and feasibility of organic rice farming and conventional rice farming in Mojogedang District, Karanganyar Regency and was carried out in June-August 2023. This research was carried out using a quantitative approach and descriptive analysis. The research location was determined purposively in the Tani Mulyo 1 Group, Mojogedang District, Karanganyar Regency, involving 25 organic rice farmers and 25 conventional rice farmers. This research uses cost, revenue, income analysis, and also feasibility analysis using the R/C ratio and Break Event Point (BEP). The results of the analysis show that the total cost of organic rice farming is IDR. 9,960,600,- and costs for conventional rice farming are IDR. 10,117,375,-. Average revenue from organic farming is Rp. 47,094,000,- and the average revenue from conventional rice farming is Rp. 40,414,400. Based on these results, the difference between revenues and costs is known so that the income obtained in organic rice farming is Rp. 37,133,400,- and conventional rice farming income is Rp. 30,297,025,-. The R/C ratio value for organic rice farming is 4.73 and for conventional rice farming is 3.99. Based on this analysis, it can be concluded that organic rice farming and conventional rice farming are both feasible to run, but organic rice farming will provide a higher level of profit.

Comparison of microbial diversity and metabolic activities in organic and conventional rice farms in Thailand.

Studies of the soil microbial community have revealed that several factors, both biotic and abiotic, can influence the community structure, diversity, and function. Human agricultural practice has been one of the key factors that affect microbial structure in soil. In this study, we examined the effect of two rice farming practices (i.e., conventional and organic) on soil microbial diversity and their metabolic activities. We proposed that the use of herbicides and chemical fertilizers in the conventional rice farming may decrease the soil microbial diversity and that it may lead to a decline in soil quality. However, our results show that there is no significant difference in the soil chemical properties, microbial diversity, and microbial metabolic activities between the two agricultural management systems. The wetland water cycling regime of rice agriculture in Thailand perhaps prevents the accumulation of chemicals in the soil, thus subdue the effect of these chemicals on soil microbes. Furthermore, our results showed that the key determinant of soil chemical properties as well as microbial community structure and diversity is the soil physical property, while the farming activity influences the microbial metabolic functions. These findings indicate the complex nature of the soil, microbes, and human farming interactions.IMPORTANCERice is a major export commodity in Thailand. As such, an understanding of the effect of conventional or organic farming approaches on soil microbial community could enable a suitable farming management. In this study, microbial communities were surveyed and compared between the two rice farming practices for their diversity and metabolic activities. Results showed no significant differences in microbial community structure and diversity between the two rice farming practices, but significant differences were observed due to the soil type, namely, clay, silty clay, silty clay loam, loam, and silty loam. Interestingly, significant differences in metabolic functions were also observed in different soil farming activities, such as land rest, period of growth, and post-burning, but not due to conventional or organic practices. These findings showed that the soil physical type and the farming activity impact the microbial community more than whether it is conventional or organically farmed.

Effects of long-term different-scale rice-duck farming on the growth and yield of paddy rice.

To maintain rice production and increase revenue, rice-duck (RD) farming is a contemporary ecological cycle technology that has been widely used in Asia. However, due to the clustering activity of duck flocks, the consequences of long-term RD farming on rice growth at different scales are still unknown. Here, we studied RD farming using several different treatments (CK: conventional rice farming; RD1: 667 m2 ; RD2: 2000 m2 ; and RD3: 3333 m2 ). The results demonstrated that the maximum tillers, effective spikes, dry matter accumulation, and lodging index of rice under RD farming were significantly decreased by 17.9%, 9.8%, 14.8%, and 17.8%, respectively, which ultimately caused a significant decrease in yield of 10.6%. However, RD farming significantly increased root oxidation activity and the ear-bearing tiller rate of rice by 25.5% and 11.1%, respectively, and improved yield stability. For different scales of RD farming, the lodging resistance index of RD1 was significantly lower than that of RD2 and RD3 by 10.0% and 15.2%, respectively, whereas the root oxidation activity and dry matter accumulation of RD2 were significantly higher than those of RD1 and RD3 by 11.1%, 4.7%, 8.6%, and 5.1%, respectively. For rice yield, there was no significant difference among the different scales. This long-term experiment helped elucidate the complicated effects of RD farming at different scales on the growth and yield of rice. It is also critical to consider the economic advantages of different scales of RD farming to assess the impact of this system more thoroughly. © 2023 Society of Chemical Industry.

Organic and Conventional Rice Farming Feasibility in Central Java, Indonesia: A Resources Productivity Approach

Organic and Conventional Rice Farming Feasibility in Central Java, Indonesia: A Resources Productivity Approach

The Future of Rice Farming: A Review of Natural and Eco-Friendly Practices

Recognizing rice as a staple for a significant global population, the review underscores the environmental challenges posed by traditional and conventional rice farming methods. It emphasizes the promise of sustainable rice cultivation, focusing on innovations like the System of Rice Intensification (SRI) and climate-friendly techniques that mitigate environmental impacts. Furthermore, it delves into the benefits of crop rotation, sustainable water management, soil health preservation through mycorrhizal associations, companion planting, and the role of precision agriculture empowered by artificial intelligence. The abstract discusses the challenges, including climate change, water scarcity, soil health, and labor shortages, and proposes prospects involving innovation, sustainable practices, policy support, and collaborative partnerships. It highlights real-world successes in eco-friendly rice farming, such as initiatives, and emphasizes the importance of empowering farmers through education and training in eco-friendly methods. Ultimately, role of eco-friendly practices in ensuring the sustainability, productivity, and food security of global rice farming.

Life Cycle Assessment of Rice Farming Practices in Indonesia

Indonesian farmers have practiced rice farming for centuries. However, chemical application and agricultural mechanization emit pollution, i.e., ethylene, CO2, and SO2. This study identifies GHG emissions from four rice farming practices, i.e., conventional, organic, integrated crop management, and rice intensification. OpenLCA 1.11 software was employed to calculate the environmental impacts of rice farming practices (ha/year), and the calculation was based on the CML-IA baseline methodology. This study assesses the life cycle of pre-planting to the production of rice. Diesel-fueled machinery in rice farming contributes most to environmental quality degradation, mainly from water pump and tractor utilization. Conventional rice farming emits the highest pollutants compared to organic rice farming, rice intensification, or integrated crop management. On the contrary, rice intensification generated the lowest pollutants. In conclusion, fossil fuel utilization contributes more to rice farming practices than chemicals or organic fertilizer application.

Efisiensi Teknis Usahatani Padi Organik Di Provinsi Lampung

<p><em>A healthy lifestyle is related to food consumption patterns, namely consuming organic food. One of the most commonly consumed organic food commodities is organic rice. Organic food products are cultivated without the use of chemicals. Changes in people's consumption patterns have led to an increase in demand for organic rice. However, at present, the productivity of organic rice farming is still low when compared to the productivity of conventional rice farming. The low productivity is thought to be caused by the inefficient allocation of production factors. This study aims to analyze the factors that affect organic rice production, examine whether organic rice farming in Lampung Province has been technically efficient, and find out what factors cause technical inefficiency in organic rice farming in Lampung Province. The location of this research is Beringin Kencana Village, Candipuro District, South Lampung Regency, and Purwokencono Village, Sekampung Udik District, East Lampung Regency in </em><em>July</em><em>-August 2022. Sampling was carried out by census. The research method used is the Stochastic Frontier Cobb-Douglas production function. The results showed that the factors that affect the production of organic rice are land area, the number of seeds, and the use of organic pesticides. The average level of technical efficiency is 0.91. Factors that affect technical inefficiency are the age of the farmer, farming experience, and participation in extension.</em></p>

Enhanced diversity of aquatic macroinvertebrate predators and biological pest control but reduced crop establishment in organic rice farming

Organic farming has been adopted as the main alternative to reduce the environmental impact of intensive agriculture by banning the use of synthetic inputs and bolstering key ecological functions such as biological pest control. Yet the potential cascading effects of farming management on the communities of natural enemies, the provisioning of pest control, and the ultimate impact on crop performance remain poorly explored. This is especially true for semi-aquatic crops such as rice (Oryza sativa, L) that largely depend on aquatic macroinvertebrate predators for biological pest control. Here we performed two consecutive landscape-scale field experiments by combining monthly surveys of macroinvertebrate aquatic predators with both pest predation and seed rice germination trials to assess differences between conventional and organic rice farming in all the above-mentioned issues. Specifically, we selected 6 organic and 6 conventionally managed rice paddies and evaluated differences in i) the diversity of aquatic macroinvertebrate predators (taxa richness and evenness), ii) the infestation level of a seed pest (chironomids larvae), iii) the efficiency of biological pest control provisioning and iv) the impact on germination of rice seeds. Communities of macroinvertebrate aquatic predators were more diverse (taxa richness) and abundant in organic than in conventional fields, yet community evenness was higher in conventionally-managed fields. Accordingly, we found that macroinvertebrate-mediated pest control was markedly more efficient in organic farms during the establishment crop stage. Pest infestation, however, remained also higher in organic farming, most likely because biological pest control in organic fields is not able to outcompete chemical control provided in conventional fields. Finally, the increased infestation level observed in organic fields ultimately resulted in reduced germination rates of rice seeds, thus limiting crop performance. Our results highlight the potential positive effects of pesticide banning in organic rice farming on aquatic macroinvertebrate communities and the consequently improvement of biological pest control provisioning. Yet conditions enhancing biodiversity may also favor pest infestation and ultimately increase crop damage. Management recommendations should therefore account for potential services and disservices associated to organic farming in order to avoid negative yield outcomes for rice farmers.

A comparative environmental analysis of conventional and organic rice farming in Thailand in a life cycle perspective using a stochastic modeling approach

System stochasticity is an inherent characteristic of agricultural systems. Many studies have been conducted in Thailand to analyze the rice production systems. However, most of the prior work just focused on deterministic approach to investigate the rice production systems while disregarding the system variability. In this study, the conventional and organic rice farming systems in Thailand were compared considering the uncertainties associated with parameters. The system variability was taken into account by employing a stochastic modeling approach. The considered impact categories include global warming, ozone formation (human health), freshwater ecotoxicity, terrestrial acidification, fine particulate matter formation, freshwater eutrophication, and fossil resource scarcity. The results showed that yield had considerable influence on the environmental profiles of the two systems; organic and conventional farming showed similar results in terms of global warming on a per hectare basis, but the considerable difference was observed on a per tonne basis. The field emissions due to farm inputs were the most significant contributor to most of the impact categories. The fuel used for irrigation, land preparation, and harvesting also contributed significantly to several impact categories. On the other hand, the impacts of inputs production and material transportation were modest. Uncertainty analysis outcomes indicated that there was a noticeable deviation from the deterministic results in terms of global warming and freshwater ecotoxicity. However, when considering the associated uncertainties, no significant difference was observed between the environmental profiles of the two systems.

Mapping heavy metals accumulation in conventional rice farming system at Banyumas Regency of Central Java, Indonesia

Rice grains produced in the conventional system are a prime source of heavy metal exposure in the human body leading to various health problems. The objective of this study was to assess heavy metals concentration in soil and rice grain under the conventional rice farming system in Banyumas, Indonesia, the pollution index, and the bioaccumulation factor. There were thirty-seven samples collected based on soil type, elevation, and irrigation system. The heavy metals level in soil ranged from 2.7 to 39.92 ppm of Pb, 0.11 to 3.01 ppm of Cd, and 4.79 to 61.32 ppm of Cr. Pb and Cr accumulation levels were below the maximum permissible concentration (MPC). A different result in Cd exceeded the MPC in 56.75% of sampling sites. Rice grain showed a high accumulation in Pb (6.85 ppm) and Cr (5.73 ppm) that exceeds the maximum standard. Cd exceeded 24.32% of sampling sites with an average of 0.54 ppm. The Pollution Index (PI) was medium in Cd and low in Pb and Cr. The Bioaccumulation Factor (BAF) of heavy metals in rice was Cd>Pb>Cr with averages of 0.64, 0.53, and 0.30, respectively. A high correlation resulted in Pb and Cd in soils and rice grains. Remediation is must done to reduce the heavy metals accumulation in soils and rice grains for environmental and health safety to prevent further contamination.

Comparison of Soil Properties in Different Fertilizer Input Systems in Lowland Rice at the Third Year in Transition

Synthetic inorganic fertilizers (SIF) have the potential to impose detrimental environmental effects and are frequently utilized in Sri Lankan conventional rice farming. To maximize rice yield while maintaining soil health, soil nutrient management is vital. In this study, the soil properties of rice fields maintained using conventional (as recommended by the Department of Agriculture (DOA), 2013), reduced (50% DOA + 50% organic), and organic Input Management Systems (IMSs) were studied. The Rajarata University of Sri Lanka's Faculty of Agriculture established this experiment during the Maha season of 2020–2021 utilizing a Randomized Complete Block Design. At the initial, 50% flowering, and harvesting stages, soil samples were obtained from three distinct IMSs with three replicates at surface (0 - 15 cm) and subsurface (15 - 30 cm) soil depths. The data were analyzed using linear mixed effect models followed by Tukey's mean comparison. Three IMSs and three different stages of rice growth exhibited substantially varying soil pH, EC, available P, and exchangeable K values in this third transition year (p<0.05). Despite being highly varying across IMSs, soil CEC was not significantly different (p>0.05) among the stages of rice growth. Three IMSs' soil available N did not change significantly (p>0.05) yet differed across growth stages (p<0.05). In comparison to those obtained with conventional IMS, rice grain yield with organic IMS produced levels that were noticeably similar. The highest grain yield was produced with reduced IMS (p<0.05). This illustrates the possibility of boosting yields and sustaining soil fertility by substituting organic manure for 50% of SIF.

Peran Penyuluh dalam Kegiatan Budidaya Padi Sawah Organik dan Konvensional di Kecamatan Baula Kabupaten Kolaka

This study aims to determine the role of extension workers/assistant in cultivation activities in organic and conventional rice farming in Baula District, Kolaka Regency with a total of 17 informants. The method in this study uses qualitative analysis as suggested by Lexi J Moleong 2007, namely data reduction, data presentation, and initial conclusion drawing. The research results show that the role of extension workers/assistant in providing direct assistance in the field to organic farmers and conventional farmers and is assigned directly to assist farmers in carrying out cultivation activities, the difference lies in the method used.

Salibu Rice Cultivation in Tungro Endemis Region

Salibu is modified ratoon rice which has advantages in economic and time-saving. Tungro disease is one of probable handicap for salibu to be controlled in their endemic area. Rice virus tungro disease is caused by Rice Tungro Bacilliform Virus (RTBV) and Rice Tungro Spherical Virus (RTSV) which are transmitted by leafhopper. The research goals are to know the growth of leafhopper population and the spread of the tungro disease in salibu and conventional rice farming system as well as their effect on yield. The research was conducted in split plot experiment and designed in a randomized block design. The main plot were 1) salibu system and 2) conventional system (non-salibu). The subplots were varieties 1) TN1 (sensitive variety), 2) Ciherang (commonly used by the farmer), and 3) Inpari 36 (tungro new resistant variety). The results revealed that the tungro attack rate, dry milled grain yield, and 1000 dry grain weight were significantly higher in conventional cultivation than salibu (P < 0.05). The number of leafhopper populations tended to be higher in salibu system than in conventional system. The number of natural enemies did not show a particular pattern related to green leafhopper's presence. The Shannon Wiener diversity index for natural enemies ranged from low to medium. Regarding to the results, salibu system is not recommended yet in the tungro endemic areas. Keywords: Salibu, rice tungro virus disease, green leafhopper, natural enemies

Exploration and remediation ability test of indigenous bacteria from rice field pemalang regency on lead (Pb) contamined soil

The research aims to obtain isolates and determine the morphological characteristics of bacteria that are resistant to Lead (Pb) contamination. The materials and tools used were soil from conventional rice farming land, Nutrient Agar (NA) medium, alcohol 70%, aquades, PbNO3 solution, aluminum foil, cling wrap, heat-resistant plastic, spiritus, physiological solution of 0.85% NaCl, autoclave, test tubes, petri dishes, erlenmeyer flasks, measuring cylinder, beaker glass, laminar air flow (LAF), shaker, magnetic stirrer, micropipette, refrigerator, analytical balance, ose needle, pH meter, vortex, ice box, shovel , tube racks, bunsen, stationery, labels, and other supporting materials and equipment. This research is a sampling research and continued with laboratory tests including bacterial isolation, colony count calculation and macromorphological characterization. The data obtained from morphological observations are presented in the form of descriptions, while quantitative data are presented in the form of numbers and are used as primary data. The results of isolating bacteria with NA medium added with 5 ppm lead, there are five bacterial isolates were selected, namely KMPb O, KT1Pb C, KT2Pb H, KB1Pb H, and KB2Pb K. Based on the TPC (Total Plate Count) test with a range of 30-300 colonies, the number of bacterial colonies ranged from 10,45 x 106 – 28,9 x 106 CFU/ml. The colony morphological characteristics of the five bacterial isolates were dominated by round in shape, smooth texture and flat elevation.

Agricultural Practice Assessment to Accelerate Organic Rice Farming Adoption: A Case Study in West Java, Indonesia

Rice is a crucial carbohydrate source for the world population’s food and global food security. The Indonesian government has tried to increase domestic production through the green revolution policy. The government has initiated concerns about enhancing rice quality through organic rice production. Organic rice has been emerging as an alternative to sustainable farming. Unfortunately, the acreage ratio to conventional farming is still relatively low, and productivity declined during the conversion period.This research aimed to explore deeply the agricultural practices between organic and conventional farming for fostering the adoption. That is why it is essential to be assessed comprehensively. This research focused on the organic rice farming production center in Subang and Tasikmalaya Regency, West Java Province. The total respondents were 203, consisting of 100 organic and 103 conventional smallholder farmers, respectively. Agricultural practice data of organic and conventional rice farming systemswere compared descriptively. Statistical analysis used Chi-square and t-test to test the significance of agricultural practices differences between the organic and conventional characteristics. The finding shows that organic rice farming had certain agricultural practices, such as farmers’ preferences to use variety, seedling, transplanting time, watering system, pest control, and fertilization approach. Organic farmers use a premium price-oriented variety, aromatic and red-rice types. Organic rice farmers produced their self-owned seed production. While in the cultivation technique, organic rice farming is considered to have more transplanting days, adopting alternate wetting and drying (AWD), using wide spacing at a minimum of 20x20 cm, and using an Integrated Pest Management (IPM) system.

Solutions to neutralize greenhouse gas emissions of the rice value chain — A case study in China

Rice contributes significantly to greenhouse gas (GHG) emissions from the food system. Previous studies mainly focused on emission reduction methods within the rice farming system rather than examining systematic solutions along the rice value chain. Organic and rice-fish co-culture rice are considered promising solutions for reducing environmental burdens. This study compared the GHG emissions of organic, rice-fish co-culture, and conventional rice value chains (including cultivation, processing, transportation, cooking, and waste disposal) with a cradle-to-grave system boundary and a new perspective from consumer dietary habits changes. The results indicated that organic rice had the highest carbon input, output, and net GHG emissions in the farming system, with 9.277, 9.658, and 0.380 kg CO2-eq kg−1 white rice, respectively. However, the net GHG emissions from rice-fish co-culture and conventional rice farming systems were −1.682 and −0.393 kg CO2-eq kg−1 white rice, respectively. Methane (CH4) contributed more than 60 % of the total GHG emissions of the three rice farming systems. Post-harvest systems, including processing, waste disposal, and transportation, contributed little to the GHG emissions of the three rice value chains. The cooking system was a relatively primary source of GHG emissions due to electricity consumption. Concerning the whole rice value chain, though higher consumption sustainability levels were assumed for the organic rice and rice-fish co-culture value chains, they were still carbon sources with GHG emissions of 0.770 and 0.147 kg CO2-eq kg−1 white rice mainly from the farming system, while the conventional rice value chain was a carbon sink (−1.012 CO2-eq kg−1). The results are similar to the functional unit of the capital diet. In this case study, organic rice had higher GHG emissions than rice-fish co-culture and conventional rice along the rice value chain, mainly from the farming system due to higher organic material inputs. Future studies should focus on reducing CH4 emissions from organic rice cultivation through sustainable soil and water management.

Environmental Life Cycle Assessment in Organic and Conventional Rice Farming Systems: Using a Cradle to Farm Gate Approach

The rising demand for agricultural products and expanding public awareness of environmental friendliness have led to the adoption of the organic farming system rather than the conventional one. The life cycle assessment (LCA) concept is a frequently used method to examine the environmental impacts of any activity across its entire life cycle. This research is the first use of LCA for the impacts of vermicompost and cattle manure as organic fertilizers in rice farming. The main goal of this study was to compare the environmental impacts of conventional and organic rice farming. This paper uses midpoint attributional LCA to analyze environmental damages during rice production. The four primary harm categories used in this strategy to categorize the environmental effects were: (1) climate change, (2) human health, (3) ecosystem quality, and (4) resources. The inventory data for the agricultural stage were obtained through farmer interviews. The system boundaries were set to cradle to farm gate, and 1 ton of final product (dry matter) was used as the functional unit. The results show that in all main damage categories, except for particulate matter formation, stratospheric ozone depletion, mineral resource scarcity, and freshwater eutrophication, conventional rice production has higher environmental impacts than organic rice production. Overall, organic rice production is more effective in diminishing the negative environmental effects of farming compared to conventional rice production.

Controlled-Release Fertilizer Improves Rice Matter Accumulation Characteristics and Yield in Rice–Crayfish Coculture

In recent years, rice–fish coculture has gained more popularity at a growing pace in China. Controlled-release fertilizer can provide nutrients in a timely manner and increase nutrient efficiency. A 2-year field experiment, which adopted both conventional japonica and two indica hybrid rice varieties, was performed to evaluate the effects of controlled-release fertilizer and inorganic compound fertilizer on rice matter accumulation and yield in rice–crayfish coculture and conventional rice farming. The results showed that compared to conventional rice farming, rice–crayfish coculture decreased dry matter accumulation at mature stage and yield by 4.02–8.15% and 4.13–9.34%, respectively. This was mainly due to a decrease in the crop growth rate, net assimilation rate, leaf area index, and light accumulation duration before elongation stage. Compared to inorganic compound fertilizer, controlled-release fertilizer increased dry matter accumulation at the mature stage and yield by 5.02–6.95% and 3.29–6.21%, respectively. Compared to conventional rice farming, rice–crayfish coculture decreased N partial factor productivity and N agronomic use efficiency by 4.13–9.34% and 3.96–8.98%, respectively. Compared to inorganic compound fertilizer, controlled-release fertilizer increased those by 3.29–6.15% and 7.36–14.01%. There was a positive linear correlation between the N partial factor productivity, N agronomic use efficiency, and yield.