Growth and nutrient absorption in chufa (<i>Cyperus esculentus</i>L. var.<i>sativus</i>Boeck.) in soilless culture

Pascual-Seva, N.; Pascual, B.; Bautista, A. San; López-Galarza, Salvador; Maroto, J.V.

doi:10.1080/14620316.2009.11512538

Cited by 11 publications

(4 citation statements)

References 18 publications

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“…This refreshing and wholesome beverage has recently become popular in other countries, such as France, the UK, the USA and Argentina. Recent studies have reported increasing interest in nutsedge cultivation, mostly for food technology and biodiesel production in Brazil, Cameroon, China, Egypt, Hungary, the Republic of Korea, Poland, Turkey and the USA (Pascual-Seva et al 2009). Research on various aspects of nutsedge cultivation, like crop management techniques, cultivar selection and plant characterisation, is reviewed in Pascual et al (1999), and studies on nutsedge nutrition and fertilisation have also been conducted (Pascual-Seva et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Response of nutsedge (Cyperus esculentus L. var sativus Boeck.) tuber production to drip irrigation based on volumetric soil water content

et al. 2014

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Cultivated nutsedge is a common crop in Valencia (Spain). The aim of this research, which was conducted over two consecutive years, was to compare the productive response of the nutsedge crop with drip irrigation and traditional furrow irrigation, calculating the yield and the irrigation water use efficiency (IWUE). The volumetric soil water content was monitored with capacitance probes. Four irrigation strategies were considered: three in drip irrigation [D70, D80, and D90 with refill points at 70%, 80%, and 90% of the field capacity, respectively] and one in furrow irrigation (refill point at 60% field capacity); in the second year, the irrigation management was automated. On average, strategy D90 produced the highest yield and D70 the lowest, while the highest IWUE was obtained with D80 and the lowest with furrow irrigation. Considering the automation of irrigation management, strategy D90 led to the highest yield and to the highest IWUE.2

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Section: Introductionmentioning

confidence: 99%

Response of nutsedge (Cyperus esculentus L. var sativus Boeck.) tuber production to drip irrigation based on volumetric soil water content

et al. 2014

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“…Therefore, studies on its morphology, physiology, and control strategies when it is seen as a weed do exist, but little research has been performed regarding its cultivation. Nevertheless, two autochthonous clones and one clone of African origin were selected and characterized (Pascual et al, 2000); the accumulation of macronutrients was measured (583,109,355,295, and 58 kg ha -1 of N, P, K, Ca, and Mg, respectively; Pascual-Seva et al, 2009); diverse agronomic studies were made -including a study of the influence of the planting date on tuber yield (Pascual et al, 1999). This study showed that planting in mid-April rather than May extends the cultivation cycle and increases yield; however, planting in April is not always possible as previous crops are often awaiting harvest.…”

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confidence: 99%

Furrow-irrigated chufa crops in Valencia (Spain). I: Productive response to two irrigation strategies

Pascual-Seva

Bautista

López-Galarza

et al. 2013

Span. j. agric. res.

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Chufa (Cyperus esculentus L. var. sativus Boeck.) is an important vegetable crop in Valencia (Spain), where its tubers are used to produce a refreshing drink called 'horchata'. Water is relatively inexpensive, there are no data regarding the volumes of water used to grow chufa, and the irrigation water use efficiency (IWUE) has neither been determined. The aim of this research was to compare the productive responses of the chufa crop to two irrigation strategies (IS). The volumetric soil water content (VSWC) was monitored with capacitance sensors. Trends in VSWC were used to determine the in situ field capacity (FC), beginning each irrigation event when the VSWC reached either approximately 45% (H1) or 60% (H2) of the FC at a soil depth of 0.10 m. The experiments were conducted over three consecutive seasons. An area velocity flow module measured the water flow. The yields, the water volumes used, and the IWUE were calculated. Plants were periodically sampled and the harvest index and relative growth rate were determined. The yield was affected by the year and by the IS. The greatest yields were obtained with the H2 strategy (on average 2.18 kg m-2 for H2 vs. 1.94 kg m-2 for H1; p≤0.01), and the average tuber weight (ATW) was affected (p≤0.01) by the year and IS interaction. IWUE was affected by the year, and none of the considered factors affected the harvest index (p≤0.05). It can be concluded that maintaining a higher VSWC would increase both yield and ATW without affecting IWUE.

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“…In addition, with the previously obtained results of the dry weight (DW) of both the Echinochloa spp. and rice plants, the relative growth rate (RGR) was calculated, defined as the variation in the biomass per unit of time, for which two results from two dates are used [43,44]. The expression to be used for the calculation of the relative growth rate is the following, according to two times after sowing (DW 14 and DW 21 )…”

Section: Plant Measurementsmentioning

confidence: 99%

Remote Sensing Evaluation Drone Herbicide Application Effectiveness for Controlling Echinochloa spp. in Rice Crop in Valencia (Spain)

Bautista,

Tarrazó-Serrano,

Uris

et al. 2024

Sensors

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Rice (Oryza sativa L.) is a staple cereal in the diet of more than half of the world’s population. Within the European Union, Spain is a leader in rice production due to its climate and tradition, accounting for 26% of total EU production in 2020. The Valencian rice area covers around 15,000 hectares and is strongly influenced by biotic and abiotic factors. An important biotic factor affecting rice production is weeds, which compete with rice for sunlight, water and nutrients. The dominant weed in Spain is Echinochloa spp., although wild rice is becoming increasingly important. Rice cultivation in Valencia takes place in the area of L’Albufera de Valencia, which is a natural park, i.e., a special protection area. In this natural area, the use of phytosanitary products is limited, so it is necessary to use the minimum amount possible. Therefore, the objective of this work is to evaluate the possibility of using remote sensing effectively to determine the effectiveness of the application of the herbicide cyhalofop-butyl by drone for the control of Echinochloa spp. in rice crops in Valencia. The results will be compared with those obtained by using sterilisation machines (electric backpack sprayers) to apply the herbicide. To evaluate the effectiveness of the application, the reflectance obtained by the satellite sensors in the red and near infrared (NIR) wavelengths, as well as the normalised difference vegetation index (NDVI), were used. The remote sensing results were analysed and complemented by the number of rice plants and weeds per area, plant dry weight, leaf area, BBCH phenological state, SPAD index values, chlorophyll content and relative growth rate. Remote sensing is validated as an effective tool for determining the efficacy of an herbicide in controlling weeds applied by both the drone and the electric backpack sprayer. The weeds slowed down their development after the treatment. Depending on the phenological state of the crop and the active ingredient of the herbicide, these results are applicable to other areas with different climatic and environmental conditions.

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Growth and nutrient absorption in chufa (Cyperus esculentusL. var.sativusBoeck.) in soilless culture

Cited by 11 publications

References 18 publications

Response of nutsedge (Cyperus esculentus L. var sativus Boeck.) tuber production to drip irrigation based on volumetric soil water content

Response of nutsedge (Cyperus esculentus L. var sativus Boeck.) tuber production to drip irrigation based on volumetric soil water content

Furrow-irrigated chufa crops in Valencia (Spain). I: Productive response to two irrigation strategies

Remote Sensing Evaluation Drone Herbicide Application Effectiveness for Controlling Echinochloa spp. in Rice Crop in Valencia (Spain)

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