Approach to Petiole Sap Nutritional Diagnosis Method by Empirical Model Based on Climatic and Growth Parameters

Llanderal, Alfonso; García‐Caparrós, Pedro; Pérez-Alonso, José; París, J.I. Contreras; Segura, María Luz; Reca, Juan; Lao, María Teresa

doi:10.3390/agronomy10020188

Cited by 11 publications

(15 citation statements)

References 23 publications

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“…Similar results were also noted by Abd El-Rheem et al [15] (P/N; 23.88%) and Sánchez et al [11] (Ca/N; 25.62%) in pepper crop. The importance of N/P in the FD can be due to the high mobility translocation of both elements from leaf to the most nutrient demanding organs (fruits) [32,33]. No references in the literature about the relationship between Ca and N nutrients were found, but it is necessary to mention that both elements are essential in yield pepper [30], especially Ca which is one of the most demanded nutrients in fruit development and any deficiency may result in loss of yield [34].…”

Section: Discussionmentioning

confidence: 99%

DRIS Norms and Sufficiency Ranges for Pepper Grown under Greenhouses Conditions in the Southeast of Spain

et al. 2021

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The aim of this study was to compile DRIS (Diagnosis and Recommendation Integrated System) norms and sufficiency ranges for pepper grown in greenhouses and the determination of the variation in DRIS norms and sufficiency ranges during the different phenological stages of the crop. The DRIS norms and sufficiency ranges were constituted by 367 leaf samples of Capsicum annuum L. which were collected in different phenological stages of the crop (flowering (FL), fruiting (FT), fruit development (FD), and harvesting (HV)). Two sufficiency ranges were developed; one including all leaf samples and the other considering the leaf samples by phenological stages ((FL) (44), (FT) (96), (FD) (100), and (HV) (127)). Furthermore, 10 DRIS norms and CV were calculated from N, P, K, Ca, and Mg. Two ratios of them were calculated in FL (N/P and N/K), two in FD (N/P and Ca/N) and one in HV (N/P) showing low CV, meaning, according to DRIS norms, the essential role of these nutrients in the crop nutrition. Moreover, the sufficiency ranges computed by all database were: N (34–56), P (1.9–4.3), K (30–51), Ca (12–33), and Mg (4.0–15) (mg g−1 DW), respectively. The data obtained in this experiment highlighted the importance of the sensitivity (low CV) of nutrient in the phenological stages such as happened with N.

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Section: Discussionmentioning

confidence: 99%

DRIS Norms and Sufficiency Ranges for Pepper Grown under Greenhouses Conditions in the Southeast of Spain

et al. 2021

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“…The concentration range of the NO 3 anion in soil solution was recorded in a variable range from 40 to 620 mg L -1 . Most changing values were recorded in the pepper crop, 220-620 mg L -1 during the floweringfruiting stage and 40-70 mg L -1 in the pre-harvest stage, which can be considered acceptable compared to the one found (396.8-1178 mg L -1 ) by Llanderal et al (2020) throughout the pepper crop cycle. Rodríguez et al (2020) propose a nitrate suff iciency value of 5 mmol L -1 (310 mg L -1 ) for soil-established pepper crops; however, this value only applies to vegetative growth.…”

Section: Resultsmentioning

confidence: 68%

“…However, statistically signif icant negative correlations were found in raspberry, cantaloupe, and pepper crops, suggesting that higher application rates do not reflect higher assimilations. About this, it has been found that the concentration of nutrients in the PCE is a function of the level of demand of ions for some physiological processes, such as nutrient uptake, bioassimilation, and storage (Llanderal et al, 2020), while decrease in ions in soil solution, generally is due to leaching towards lower depths, or to high assimilation by plants in certain phenological stages (Komosa et al, 2017). The foregoing supposes the occurrence of a negative correlation when high mineral applications are combined with periods of low plant demand.…”

Section: Resultsmentioning

confidence: 99%

“…Regarding the analysis of plant tissue, petiole cellular extract method (PCE) gives a way to determine the nutritional status of the plants. This method is carried out by collecting fresh plant material, which yields a quantitative evaluation of nutrients present in soluble inorganic forms in the plant tissue at the time of sampling (Llanderal et al, 2020). To establish a nutritional diagnosis, it is necessary to make a comparison using suff iciency ranges obtained under different cultivation conditions, since it has been observed that nutritional variable values obtained from plants vary throughout the day and season of the year, among other factors (Salazar-García, Medina, Ibarra, and González, 2018;Menzel, 2018;Llanderal et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Relation between soil solution composition and petiole cellular extract of crops in western Mexico

Benavides-Mendoza

Alba-Romenus

Francisco-Francisco

2021

Terra

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Crop fertilization greatly impacts food production. However, insufficient applications can lead to poor yields. On the other hand, an excessive application leads to soil and aquifers pollution. In this paper, field studies were carried out to determine the ranges of mineral concentration and the interaction of the ions in the soil solution (SS) and the petiole cellular extract (PCE) in several cultures established in the states of Guanajuato, Colima and Jalisco, Mexico. The hypothesis states that there is a causal relationship between the mineral composition of the soil solution (SS) and the minerals and total soluble solids (TSS) in petiole cellular extract (PCE). The following cultures were studied in this research: avocado, blueberry, broccoli, cauliflower, raspberry, strawberry, lettuce, cantaloupe, papaya, and pepper. For each culture, PCE samples and SS samples using a press to break tissue and ceramic tip lysimeters were obtained. The results were processed to obtain ranges of variation within 50% of the closest values to the median. Correlations between the several ion concentrations were analyzed using analysis of variance. The results showed values (mg L-1) of NO3- (40-620), PO43- (17-66), K+ (3-377), Ca2+ (27-582), Na+ (15.3-500), Mg2+ (10-53), Fe3+ (0.6‑1.8), and Zn2+ (2.8-7.4) in soil solution, which allowed obtaining values of NO3- (27-9225), K+ (820-9375), Ca2+ (1.0-650), Na+ (25-620) and TSS (2-13 °Brix) in petiole cellular extract of petiole. Statistically significant correlations were observed between the concentrations of the SS ions regarding the concentrations in PCE in crops suggesting a relationship between the plant nutritive assimilation and cations or anions present in soil solution. The conclusion derived from this study is that ionic concentration ranges registered in the SS and in the PCE provide an approximation to the ranges of nutritional sufficiency for the horticultural crops established in the summer-winter in western Mexico.

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“…The extraction of soil solution was done recurring to suction cups [38][39][40]. Soil water properties are given in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Crop Response to Combined Availability of Soil Water and Its Salinity Level: Theory, Experiments and Validation on Golf Courses

et al. 2021

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The phenomenological expression showing crop yield to be directly dependent on water deficiency, under saline conditions, has encouraged a continued focus on salinity as a viable approach to increase crop yields. This work reassesses crop response to availability of saline soil water ASW in two stages (A) Develop a simple approach suggesting that permanent wilting point (WP) increases under high saline soil water tension and relative yield of Lettuce (Lactuca sativa L., var longifolia Lam., cv. Nevada) and maize (Zea Mays L., cv. Jubilee sweet) decrease. (B) Using a deterministic numerical soil water model to validate the theory on Bermuda grass of golf courses. The experimental plots were established in the North Negev, Israel (Sweet corn) and the Algarve, Portugal (Lettuce and Bermuda grass covering the golf courses). Sprinkler irrigation and line source techniques were used for water application, creating a saline gradient under a precise irrigation water distribution. Two salinity empirical models were tested (Mass and Hoffman MH and van Genuchten–Gupta vGG). Their empirical models were modified and instead of soil electrical conductivity of irrigation water (ECe) we used wilting point (WP) and RASW to follow the changes in relative yield. The validation was conducted with theoretical soil plant atmosphere water (SPAW) to predict the results on golf courses. It is concluded that an alternative S-shaped response model provides better fit to our experimental data sets. Modified MH model (Yr = Y/Ymax = a* (ASW–threshold’s constant) revealed that a single dimensionless curve could be used to express yield—salinity interference when represented by varying ASW. The vGG model: vGG can represent salt tolerance of most crops, by using varying wilting point of average root zone salinity, at which the yield has declined by 50%. The abscissa of both models was based on WP rather than the standard soil electrical conductivity (ECw). The correlation between the experimental data and WP or relative available soil water (RASW) was acceptable and, therefore, their usefulness for prediction of relative yield is acceptable as well. The objectives of this study were: 1. To develop a simple model describing the effect of salinity through soil water availability on crop production; 2. To replace the standard varying soil electrical conductivity ECe used by MH and vGG models by two soil parameters (at wilting point- θwp and at field capacity ϴfc) in order to describe the relationship between them and relative yield. 3. Validate the new model with respect to independent salinity on Golf courses and a mathematical deterministic model.

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Approach to Petiole Sap Nutritional Diagnosis Method by Empirical Model Based on Climatic and Growth Parameters

Cited by 11 publications

References 23 publications

DRIS Norms and Sufficiency Ranges for Pepper Grown under Greenhouses Conditions in the Southeast of Spain

DRIS Norms and Sufficiency Ranges for Pepper Grown under Greenhouses Conditions in the Southeast of Spain

Relation between soil solution composition and petiole cellular extract of crops in western Mexico

Crop Response to Combined Availability of Soil Water and Its Salinity Level: Theory, Experiments and Validation on Golf Courses

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