Effect of NPK Fertilizer and Cropping Ratios on Nutrient Uptake and Quality Components of Maize (Zea mays) and Egusi Melon (Colocynthis citrullus)

Ehigiator, J. O.; Iremiren, G. O.; Falodun, Ehizogie J.

doi:10.9734/ijpss/2016/21614

Cited by 1 publication

(2 citation statements)

References 7 publications

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“…Regions such as Gansu, Ningxia and Inner Mongolia follow scientific and standardized management practices for the selection of varieties, cultivation of seedlings, transfer cultivation and harvesting of fruits. Furthermore, many farmers have been given professional training to achieve high-quality and yield [6,35,36]. The high melon yield in the present study was probably due to the adoption of best field management practices and the use of balanced N, P and K fertilization along with the best agronomic measures, while lower yields may be the result of omission experiments.…”

Section: Fleshy Fruit Yield and Nutrient Uptakementioning

confidence: 77%

“…In Poland, under drip irrigation conditions, N, P and K fertilizers for the highest melon yields were 120 kg/ha, 100 kg/ha and 150 kg/ha [4]. However, according to a recent fertilization survey, N application rates for melon in northern China reached more than 400-600 N kg/ha [5]; meanwhile, more than 50% of areas received high P and K inputs, with an unreasonable nutrient ratio [6]. Excessive and imbalanced application of 2 of 13 chemical fertilizers has resulted in both reduced melon yield and inefficient fertilizer use, while exacerbating various environmental issues, including the release of greenhouse gases, eutrophication and soil quality degradation [7], and it is detrimental to the production of high-quality melons.…”

Section: Introductionmentioning

confidence: 99%

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Estimating Nutrient Uptake Requirements for Melon Based on the QUEFTS Model

et al. 2022

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Imbalanced and excessive fertilizer application has resulted in low yields and reduced nutrient use efficiency for melon production in China. Estimating nutrient requirements is crucial for effectively developing site-specific fertilizer recommendations for increasing yield and profit while reducing negative environmental impacts. Relationships between the yield and nutrient uptake requirements of above-ground dry matter were assessed using 1127 on-farm observations (2000–2020) from melon production regions of China. The quantitative evaluation of fertility of tropical soils (QUEFTS) model was used to estimate nutrient requirements. It predicted a linear increase in yield at balanced nutrient uptake levels until the yield reached approximately 60–80% of the potential yield. In order to produce 1000 kg of fruit, 2.9, 0.4 and 3.2 kg/ha of N, P and K (7.2:1.0:7.8), respectively, were required for above-ground parts, while the corresponding nutrient internal efficiencies were 345.3, 2612.6 and 310.0 kg per kg N, P and K, respectively, whereas 1.4, 0.2 and 1.9 kg of N, P and K were required to replace nutrients removed after harvest. The corresponding fruit absorption rates were 47.0%, 59.5% and 58.2%, respectively. Field validation experiments confirmed the consistency between observed and simulated uptake rates, indicating that this model could estimate nutrient requirements. These findings will help develop fertilizer recommendations for improving melon yield and nutrient use efficiency.

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Section: Fleshy Fruit Yield and Nutrient Uptakementioning

confidence: 77%