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Darwish, T.; Atallah, T.; Hajhasan, S.; Chranek, A.

doi:10.1023/a:1025107202143

Cited by 50 publications

(12 citation statements)

References 14 publications

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“…This finding implies that increasing N rate under severe water deficit will be relatively inefficient, may be because of an adverse effect of excessive N on yields. These results are in agreement with the findings of [6], who reported that productivity of applied nitrogen under severe water stress conditions decreased with applied excess nitrogen. Under the conditions of water deficit, N application levels would not be the limiting factor for increasing potato tuber yields whenever the amount of water applied would probably be the important factor.…”

Section: Yield and Yield Componentssupporting

confidence: 93%

“…Whereas by applying 70% (I30) less amount of irrigation water, potato yield decreased by 50.1% and 43.4%, respectively, for 2010 and 2011. Similar results were found by [6] [32]. The reduction in potato yield was attributed to reduction in tubers number and weight ( Table 2).…”

Section: Yield and Yield Componentssupporting

confidence: 84%

“…[2] [3] showed that saline water could be efficiently used through drip irrigation even on saline soils. Moreover, it results in considerable saving in irrigation water [4] [5] thus reducing the risks of salinization and also nutrient leaching [6].…”

Section: Introductionmentioning

confidence: 99%

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Yield and Water Productivity of Drip-Irrigated Potato under Different Nitrogen Levels and Irrigation Regime with Saline Water in Arid Tunisia

Mokh¹,

Nagaz²,

Masmoudi³

et al. 2015

AJPS

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Field studies were conducted on a sandy soil during autumn of 2010 and 2011 in an arid region of Tunisia to investigate the effects of nitrogen and irrigation regimes with saline water on yield and water productivity (WP) of potato (Solanum tuberosum L. cv. Spunta) and soil salinity. For the two years, irrigation treatments consisted in water replacements of cumulated crop evapotranspiration (ETc) at levels of 100% (I100, full irrigation), 60% (I60) and 30% (I30), when the readily available water in I100 treatment was depleted, while the nitrogen treatments (N) were 0, 100, 200, and 300 kg/ha (No, N100, N200, and N300). Results showed that soil salinity values remained lower than those of electrical conductivity of irrigation water (ECiw) and were the lowest under treatment I100 and the highest with I30 treatment. Relatively low ECe values were also observed under I60 treatment. The highest potato yields for the two years were obtained with I100 treatment. Compared to I100, significant reductions in potato yields were observed under I60 and I30 deficit irrigation treatments resulting from a reduction in tubers number/m² and tuber weight. The water productivity (WP) was found to significantly vary among treatments, where the highest and the lowest values were observed for I30 and I100 treatments, respectively. Potato yield and WP increased with an increase in nitrogen rates. The rate of 300 kg N/ha was seen to give good yield and higher WP of potato under full (I100) and deficit (I60) irrigation treatments. However, application of N adversely affected potato yield and WP, when N level applied above 200 kg N/ha at I30. The WP was improved by N supply, but its effect decreased as the irrigation level increased. The IWP at I100, which produced the highest potato yield, was 8.5 and 9.9 kg/m 3 with N300 but this increased to 11.9 and 15.6 kg/m 3 at I30 with N200, in 2010 and 2011, respectively. These re-* Corresponding author.F. El Mokh et al. 502sults suggested that potato in arid region could be cultivated with acceptable yields while saving irrigation water and reducing nitrogen supply but it was essential to exploit the interaction effect between these two parameters to maximize resource use efficiency.

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Section: Yield and Yield Componentssupporting

confidence: 93%

Section: Yield and Yield Componentssupporting

confidence: 84%

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Yield and Water Productivity of Drip-Irrigated Potato under Different Nitrogen Levels and Irrigation Regime with Saline Water in Arid Tunisia

Mokh¹,

Nagaz²,

Masmoudi³

et al. 2015

AJPS

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“…Higher N input increased not only the N derived from fertilizers, but also the residual soil N. Darwish et al, (2003) reported that irrigation at 100 per cent PE + fertigation with 100 per cent N and K and 50 per cent PE + fertigation with 100 per cent N and K being at par recorded 67.06 and 65.78 per cent, respectively higher pod yield of chilli as compared to surface irrigation at 0.90 IW/CPE ratio + entire NPK as soil application. However, fertigation of 125 per cent of N and K led to marginal decrease in chilli pod yield over fertigation of 100 per cent of N and K. Fertigation of 75 per cent, 100 per cent and 125 per cent N and K registered 50.6, 66.8 and 58.6 per cent increase in pod yield, respectively over soil application of 100% N and K + surface irrigation.…”

Section: Tomatomentioning

confidence: 98%

“…Potato Darwish et al, (2003) studied the impact of N fertigation in potato and reported that fertigation with continuous N feeding through drip system based on actual N demand and available N in the soil resulted in 55 per cent N recovery; and for spring potato crop in this treatment, 44.8 per cent N need was met from the soil N and 21.8 per cent from the irrigation water. Higher N input increased not only the N derived from fertilizers, but also the residual soil N. Darwish et al, (2003) reported that irrigation at 100 per cent PE + fertigation with 100 per cent N and K and 50 per cent PE + fertigation with 100 per cent N and K being at par recorded 67.06 and 65.78 per cent, respectively higher pod yield of chilli as compared to surface irrigation at 0.90 IW/CPE ratio + entire NPK as soil application.…”

Section: Tomatomentioning

confidence: 99%

Drip Fertigation in Vegetable Crops for Enhancing Productivity and Resource Use Efficiency: An Overview

Priya¹,

Chinnusamy²,

Karthikeyan³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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Nutrient use efficiency and harvest index of cassava decline as fertigation solution concentration increases

Omondi

Lazarovitch

Rachmilevitch

et al. 2018

J. Plant Nutr. Soil Sci.

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Response of cassava (Manihot esculenta Crantz) to fertigation as a form of nutrient delivery is unknown. The objectives of this study were to establish a balanced nutrition and to enhance agronomic nutrient use efficiency (ANUE) of cassava under fertigation. This study was conducted in the greenhouse and in the field. In both, the results showed a similar trend. There were six fertigation concentrations and three cassava varieties, selected for their duration of growth in the field. Shoot biomass of the long‐duration variety (Nalumino) was the highest, even though its dry root yield was the lowest (10.18 t ha−1) among the varieties. In contrast, the medium‐duration variety (Kampolombo) produced the highest dry root yield (20.34 t ha−1) and a lower shoot biomass. The highest root yield of the shortest‐duration variety (Mweru) was achieved at 200 mg N, 30 mg P, and 200 mg K L−1 (155.0, 23.3, 155.0 kg N, P, K ha−1), while Nalumino's was at 70 mg N, 7 mg P, and 70 mg K L−1 (54.3, 5.4, 54.3 kg N, P, K ha−1). ANUE and harvest index of these varieties declined as the fertigation concentrations increased. Additionally, the correlation between concentrations of N in the youngest fully expanded leaf (YFEL) blades and dry root yields was the lowest (R2 = 0.5488), whereas P and K were R2 = 0.7237 and R2 = 0.8006, respectively, an indication that nutrient concentrations in the leaf, especially N, cannot easily be used to predict root yield. When cassava reaches nutrient sufficiency, mainly N, its accumulation in the leaf continues without significant increase in the root yield.

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Cited by 50 publications

References 14 publications

Yield and Water Productivity of Drip-Irrigated Potato under Different Nitrogen Levels and Irrigation Regime with Saline Water in Arid Tunisia

Yield and Water Productivity of Drip-Irrigated Potato under Different Nitrogen Levels and Irrigation Regime with Saline Water in Arid Tunisia

Drip Fertigation in Vegetable Crops for Enhancing Productivity and Resource Use Efficiency: An Overview

Nutrient use efficiency and harvest index of cassava decline as fertigation solution concentration increases

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