Modified plant architecture integrated with liquid fertilizers improves fruit productivity and quality of tomato in North West Himalaya, India

Rathore, A. C.; Mehta, Harsh; Jayaprakash, J.; Singh, Charan; Gupta, A. K.; Kumar, Pawan; Islam, Shams Ul; Kar, Saswat Kumar; Patra, Sridhar; Chand, Lekh; Doharey, V. K.; Ojasvi, P. R.; Yadav, R. S.; Madhu, M.

doi:10.1038/s41598-021-98209-z

Cited by 5 publications

(2 citation statements)

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“…The Narciso Campero case study revealed that hybrid seeds are a common choice for more than 50% of the farmers surveyed, while open pollination, seeds from the previous harvest or a combination of seed sources are the common approach for the other 50% of farmers interviewed (Figure 11). Use of trellis, the right amount of fertilisers, shoot pruning and other plant protection techniques ensure high quality and high yield (Rathore et al, 2021). Paper IV revealed significant variation in cultural activities between the case studies.…”

Section: Cultural Practicesmentioning

confidence: 96%

Bolivian tomatoes : genetic diversity, quality traits and value chains

Gutierrez¹

2022

Acta Universitatis Agriculturae Sueciae

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Bolivia is considered one of the centres of origin and distribution of tomatoes, and wild relatives harbouring potential genetic diversity and quality traits are preserved in germplasm collections. Tomato is the most commonly grown vegetable world-wide, but in Bolivia, tomatoes are lowyielding and have short shelf-life. This thesis studied genetic diversity of 20 accessions and eight cultivars using 11 simple sequence repeat markers, quality traits and bioactive compounds in fruits of 29 accessions and eight cultivars using HPLC techniques. Fruit quality along the tomato value chain (TVC) was assessed in case studies in four provinces. Genetic diversity was found to be low and party influenced by plant growth type, geographical origin, fruit shape and size, and stage of maturity. A UPGMA tree distributed the 28 accessions into six groups, with separation between indeterminate and determinate plant growth type. Quality traits and polyamines (putrescine, spermidine, spermine) concentrations showed inconsistent variations between six maturity stages studied. At maturity, only two the 29 Bolivian accessions showed significant differences in polyamines concentrations. However, the accessions differed significantly in carotenoids and vitamin C content, but no interaction between polyamines and carotenoids concentrations was observed. Five critical factors within the Bolivian TVC were identified as affecting tomato quality: i) landscape and land access; ii) cultural practices; iii) harvesting process; iv) packing process; and v) transportation system. The new information on Bolivian genetic resources, bioactive compounds and desirable traits presented in this thesis can be used by breeders to develop new cultivars. In a broader perspective, the thesis identified constraints and actors involved in tomato quality determination in a developing country.

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Section: Cultural Practicesmentioning

confidence: 96%

Bolivian tomatoes : genetic diversity, quality traits and value chains

Gutierrez¹

2022

Acta Universitatis Agriculturae Sueciae

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“…Currently, conventional solid compound fertilizers are mainly used for fertigation in large-scale lettuce cultivation. However, conventional solid fertilizers dissolve slowly during the early cold spring, leading to uneven nutrient distribution and blockage of water pipeline, resulting in inconsistent growth of individual plants, reduced marketability, and decreased profitability for farmers (Rathore et al, 2021). High-quality water-soluble fertilizers are expensive, and most farmers tend to apply large amounts of lowcost fertilizers to achieve high yields.…”

Section: Introductionmentioning

confidence: 99%

Regulating root structure of potted lettuce to magnify absorption from APP and UAN fertilizers

Li,

Yang

et al. 2024

Front. Plant Sci.

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IntroductionImprovement of root architecture is crucial to increasing nutrient acquisition.MethodsTwo pot experiments were conducted to investigate the effects of different concentrations of urea ammonium nitrate solution (UAN) and ammonium polyphosphate (APP) on lettuce root architecture and the relationship between roots and nitrogen (N) and phosphorus (P) absorption.ResultsThe results showed that lettuce yield, quality, and root architecture were superior in the APP4 treatment compared to other P fertilizer treatments. The N480 treatment (480 mg N kg-1 UAN) significantly outperformed other N treatments in terms of root length, root surface area, and root volume. There were significant quantitative relationships between root architecture indices and crop uptake of N and P. The relationships between P uptake and root length and root surface area followed power functions. Crop N uptake was significantly linearly related to the length of fine roots with a diameter of <0.5 mm.Conclusion and discussionThe length of fine roots played a more prominent role in promoting N absorption, while overall root size was more important for P absorption. APP has a threshold of 9.3 mg P kg-1 for stimulating the root system. Above this threshold, a rapid increase in root absorption of P. UAN can promote extensive growth of fine roots with a diameter less than 0.5 mm. Applying appropriate rates of APP and limiting UAN application to less than 400 mg N kg-1 can improve root architecture to enhance N and P absorption by lettuce. These results highlight a new possibility to improve nutrients use efficiency while maintaining high yields.

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