Effect of nitrogen on yield, quality, and irrigation water use efficiency of drip fertigated grafted watermelon (<i>Citrullus lanatus</i>) grown on a calcareous soil

AlKhader, Asad M. F.; Qaryouti, M.; Okasheh, Tariq Yousef Mohammed

doi:10.1080/01904167.2019.1568464

Cited by 13 publications

(5 citation statements)

References 22 publications

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“…Water use efficiency decreased with the increasing N level. These results disagreed with those obtained by Al-Khader et al [43], who found an improvement in WUE at high levels of N in watermelon. Likewise, Badr et al [44] found the same results in tomato plants cultivated with drip irrigation, with WUE being greater at the highest N rate.…”

Section: Discussioncontrasting

confidence: 99%

Fertigation Strategies to Alleviate Fertilizer Contamination Generated by Tomato Crops under Plastic Greenhouses

2021

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The rapid development of greenhouse horticulture has brought about a dramatic increase in the nitrate pollution of aquifers. The optimization of nitrogen application is an important tool to minimize nitrogen losses. The objective of this research was to assess the effect of different fertigation strategies, based on the reduction of the nitrogen applied and the use of a percentage of NH4+ as a nitrogen source, on the decrease in the environmental impact caused by the traditional system, as well as to evaluate if this is compatible with a high fruit yield (considering quantity and quality). Lycopersicum esculentum Mill cv. Forteza plants were grown in a polyethylene greenhouse. Tomato yield and quality were evaluated, along with leachates, which were collected by means of rigid plastic lysimeters. The proposed strategies did not reduce fruit yield. However, the reduction in the nitrate applied caused firmness and °Brix decrease, together with a diminution in titratable acidity until 124 days after transplanting. Nevertheless, these effects were not observed with the replacement of some of the NO3− by NH4+. The reduction in fertilizer inputs significantly improved water and nutrient (N, P and K) use efficiency. The treatment with NH4+ improved K use efficiency, compared to the conventional treatment, but P decreased. The highest NO3− and K leaching was detected in the traditional treatment.

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Section: Discussioncontrasting

confidence: 99%

Fertigation Strategies to Alleviate Fertilizer Contamination Generated by Tomato Crops under Plastic Greenhouses

2021

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“…Oliveira et al (2008), Colla, Suárez andCardarelli (2010), Castellanos et al (2012) and Aouass, Kenny and Krim (2020) also observed reduction in the efficiency of N use by the melon crop with the increase in N availability. This behavior was also reported in another cucurbit species, watermelon, by Asad, Muien and Tariq (2019).…”

Section: Resultssupporting

confidence: 81%

Efficiency of nitrogen and potassium application on phytotechnical parameters and yield of melon

et al. 2020

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Phytotechnical parameters, yield and fertilizer use efficiency are relevant to the rational management of fertigation, especially in cultivation of high technological level. Thus, the objective was to evaluate the influence and efficiency of nitrogen (N) and potassium (K) application on the phytotechnical parameters, yield and nutritional efficiency of yellow melon in a fertigation system. The experiment was conducted in the city of Bom Jesus-PI, Brazil, from January to April 2016, in a strip-block design with four replicates, and the treatments consisted of five N levels (0, 45, 90, 135 and 180 kg ha-1 in the form of urea) and five K levels (0, 60, 120, 180 and 240 kg ha-1 in the form of potassium chloride), applied through fertigation. Collar diameter, main branch length, leaf chlorophyll content, number of leaves, leaf area index, biomass accumulation, fruit yield, and N and K use efficiencies were evaluated. Applications of 180 kg ha-1 of N and 240 kg ha-1 of K, respectively, led to the highest growth of the melon, while maximum production was obtained with the use of 112.50 and 165 kg ha-1 of N and K, respectively. The efficiency of N and K use decreased with increasing levels.

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“…The findings were also consistent with previous research, which found that vegetable production with fertigation technology can result in a significant increase in crop yield because fertilizer is applied frequently and in small amounts during each irrigation event to ensure an adequate supply of water and nutrients in the rootzone (Vasu and Reddy, 2013;AlKhader et al, 2019). Tomato and onion yields were significantly higher for the AMG watering can treatment.…”

Section: Vegetable Yieldssupporting

confidence: 91%

Yields and soil chemical property changes in an intensive vegetable cropping system in the Sahel

Ibrahim¹,

Dan²,

Adamou³

et al. 2023

Afr. J. Agric. Res.

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Irrigated vegetable production is an important agricultural activity and a significant source of income for millions of smallholder farmers in the Sahel. There is little information on the potential effects of intensive vegetable production using African Market Garden (AMG) technology on vegetable yields and soil chemical properties. Three contiguous 500-m 2 plots were established to evaluate three vegetable management practices: (1) AMG, (2) Improved Management (IM), and (3) Farmer Practice (FP). These management practices were arranged in a randomized block design. AMG and IM management practices produced higher yields as compared to farmer practices. Tomato and onion yield for IM were 50 and 300% higher than for AMG, respectively; while yields for FP were consistently lower. The soil chemical properties at the end of the experiment displayed marked changes in all treatments compared to the initial soil status. Except for pH, which decreased by 0.2, 0.4, and 1.1 pH units, respectively, for FP, IM, and AMG, soil chemical properties increased as a direct response to management practices. These findings indicate that regular and high rates of manure application combined with mineral fertilizer enhance sandy soil fertility in the Sahel. These findings are important for developing sustainable vegetable production in the Sahel.

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Effect of nitrogen on yield, quality, and irrigation water use efficiency of drip fertigated grafted watermelon (Citrullus lanatus) grown on a calcareous soil

Cited by 13 publications

References 22 publications

Fertigation Strategies to Alleviate Fertilizer Contamination Generated by Tomato Crops under Plastic Greenhouses

Fertigation Strategies to Alleviate Fertilizer Contamination Generated by Tomato Crops under Plastic Greenhouses

Efficiency of nitrogen and potassium application on phytotechnical parameters and yield of melon

Yields and soil chemical property changes in an intensive vegetable cropping system in the Sahel

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