Effect of drip irrigation frequency on radish (Raphanus sativus L.) growth and water use

2005 ◽  
Vol 24 (3) ◽  
pp. 161-174 ◽  
Author(s):  
Shuqin Wan ◽  
Yaohu Kang
Keyword(s):  
Water Use ◽  
Drip Irrigation ◽  
Raphanus Sativus ◽  
Irrigation Frequency ◽  
Raphanus Sativus L

Effects of substrate acidity and UV-B radiation on photosynthesis of radishes

2011 ◽  
Vol 6 (4) ◽  
pp. 624-631
Author(s):  
Irena Januskaitiene
Keyword(s):  
Gas Exchange ◽  
Water Use ◽  
Raphanus Sativus ◽  
Net Photosynthesis ◽  
Enzymatic Reactions ◽  
Growth Substrate ◽  
Gas Exchange Parameters ◽  
Raphanus Sativus L ◽  
Use Efficiency ◽  
Exchange Parameters

AbstractThe aim of this study was to assess the combined effect of substrate acidity (pH 4.8; pH 3.8) and 1 kJm−2d−1 UV-B radiation on photosynthesis and growth of radishes (Raphanus sativus L.). Radishes were sown in a neutral pH 6.5 peat substrate. When the second true leaf unfolded, the growth substrate was acidified using different concentration of H2SO4 and exposed to UV-B radiation for a period of ten days. Gas exchange parameters were measured with the LI-6400 portable photosynthesis system. Content of chlorophyll was evaluated spectrophotometrically. The results showed that the greatest inhibition of net photosynthesis was observed when radishes were grown in an acidified pH 3.8 substrate. The decrease of the photosynthesis of radish plants treated with both investigated factors (substrate acidity and UV-B) were lower compared to the effect of substrate acidity alone. UV-B radiation stimulated both enzymatic reactions of photosynthesis and water use efficiency of radish plants grown in acidified peat substrates. Also, investigated factors had higher impact on biomass of tuber than biomass of foliage.

Corn Production: A Subsurface Drip Irrigation Approach

2014 ◽  
Vol 666 ◽  
pp. 375-378
Author(s):  
Feng Liu ◽  
Guang Hua Wu ◽  
Ming Yu Zhang ◽  
Qiang Wang
Keyword(s):  
Water Use ◽  
Drip Irrigation ◽  
Critical Issue ◽  
Subsurface Drip Irrigation ◽  
Management Tool ◽  
Silt Loam ◽  
Irrigation Frequency ◽  
Corn Production ◽  
Irrigation Water Use ◽  
Subsurface Drip

Jilin Provincial Academy of Agricultural Machinery initiated studies in 2000 to develop the methodology for successful application of subsurface drip irrigation (SDI) for corn production on the deep silt loam soils of the northeast plains, China. Irrigation water use for corn can be reduced by 37–52% when using SDI compared with more traditional forms of irrigation in the region. Irrigation frequency has not been a critical issue when SDI is used for corn production on the deep silt loam soils of the region. A dripline spacing of 1.5 m has been found to be most economical for corn grown in 0.76 m spaced rows. Nitrogen fertigation was a very effective management tool with SDI, helping to maximize corn grain yield, while obtaining high efficiencies of nitrogen and water use. The research SDI systems have been utilized since 2000 without replacement or major degradation. SDI systems lasting 10–20 years are cost competitive for corn production with the more traditional forms of irrigation in the northeast plains for certain field sizes.

Scheduling drip irrigation for ginseng (Panax quinquefolius L.) grown under straw and bark mulch

2007 ◽  
Vol 87 (2) ◽  
pp. 373-381 ◽  
Author(s):  
R. C. Roy ◽  
B. R. Ball Coelho ◽  
A. J. Bruin ◽  
R. Reeleder ◽  
B. Capell
Keyword(s):  
Soil Water ◽  
Water Use ◽  
Drip Irrigation ◽  
Field Capacity ◽  
Growing Season ◽  
Yield Response ◽  
Root Yield ◽  
Irrigation Frequency ◽  
Straw Mulch ◽  
Horticultural Crops

Responses of ginseng to drip irrigation regimes and organic mulches were determined in two experiments beginning in 1998 and 1999. Treatments were four soil water content thresholds for irrigation: 0, 0.08, 0.12 and 0.16 m3 m-3 (θ0, θ8, θ12, and θ16, respectively); combined with either straw or bark mulch. In its first growing season, ginseng did not require irrigation in 1999 or 2000. In subsequent years, irrigation was generally more frequent when applied at higher moisture threshold levels, but precipitation affected irrigation frequency under all treatments. Water use increased with crop age to 3yr, to about 65% of the requirement of unshaded horticultural crops. Seed yield from 3-yr-old plants under straw mulch in 2001 was greater in response to θ12 and θ16 than to θ8 or θ0. Root yield response to irrigation threshold was linear for 2- and 3-yr- old plants under straw mulch in 2001, and quadratic for 3-yr-old plants under bark mulch in 2002. The optimal threshold to initiate drip irrigation was approximately 65% of field capacity. Key words: Root, soil water, water use

Effects of frequency of drip irrigation frequency under mulch on potato growth, yield and water use efficiency

2013 ◽  
Vol 21 (7) ◽  
pp. 824-830 ◽  
Author(s):  
Jun-Hong QIN ◽  
You-Jun CHEN ◽  
Chang-Yan ZHOU ◽  
Bao-Ping PANG ◽  
Mei-Lian MENG
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Drip Irrigation ◽  
Growth Yield ◽  
Irrigation Frequency ◽  
Use Efficiency ◽  
Potato Growth

scholarly journals Effect of Drip Irrigation Frequency, N-Fertilization, and Mulching on Yield, Nitrogen, and Water Use Efficiencies of Cucumber (Cucumis sativus L.) in Ikole-Ekiti, Nigeria

2021 ◽  
Vol 11 (2) ◽  
pp. 184-191
Author(s):  
Abayomi Sunday Fasina ◽  
Olubunmi Samuel Shittu ◽  
Kayode Samuel Ogunleye ◽  
Augustus Oludotun Akinmayowa Ilori ◽  
Temitope Seun Babalola
Keyword(s):  
Water Use ◽  
Nitrogen Fertilization ◽  
Drip Irrigation ◽  
Block Design ◽  
Nutrient Use Efficiency ◽  
Irrigation Scheduling ◽  
Irrigation Frequency ◽  
Cucumis Sativus L ◽  
Use Efficiency ◽  
Cucumber Yield

Soil moisture conservation, proper irrigation scheduling and nutrient management are crucial for sustainable cucumber production. A field experiment was set up over two years (2018 and 2019) to investigate the effects of irrigation frequency, black polyethylene mulching, and nitrogen fertilization on cucumber yield, water use efficiency (WUE) and nutrient use efficiency (NUE) at Ikole-Ekiti, Nigeria. The experiment was a 3 x 2 x 2 factorial in a randomized complete block design (RCBD) with a split-plot arrangement and the main plot as drip irrigation frequency: twice per week (I4), three times per week (I5), and four times per week (I6), while the sub-plots were nitrogen fertilization; (no fertilizer, N0 and 180 kg/ha urea, N180) and mulching (no mulch, NM and mulch, M). The highest yield (8.39 and 8.51 t/ha) with the best WUE was obtained from treatment I4MF (F, fertilization), while the lowest (5.81 and 5.79 t/ha) was obtained from I6MF for the respective years. The combination of variables significantly (P<0.05) influenced cucumber yield, WUE, and NUE, and significant correlations were obtained (r=0.87** and 0.85**) between WUE and fruit yield for the study years. The treatment I4MF therefore, could successfully be adopted to reduce water and fertilizer application for improved cucumber yield in the field.

scholarly journals Growth and Production of Young Peach Trees Irrigated by Furrow, Microjet, Surface Drip, or Subsurface Drip Systems

HortScience ◽  
2003 ◽  
Vol 38 (6) ◽  
pp. 1112-1116 ◽  
Author(s):  
David R. Bryla ◽  
Thomas J. Trout ◽  
James E. Ayars ◽  
R. Scott Johnson
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Drip Irrigation ◽  
Vegetative Growth ◽  
Prunus Persica ◽  
Furrow Irrigation ◽  
Growth And Yield ◽  
Irrigation Frequency ◽  
Use Efficiency ◽  
Subsurface Drip

A 3-year study was conducted in central California to compare the effects of furrow, microjet, surface drip, and sub surface drip irrigation on vegetative growth and early production of newly planted `Crimson Lady' peach [Prunus persica (L.) Batsch] trees. Furrow treatments were irrigated every 7, 14, or 21 days; microjet treatments were irrigated every 2-3, 7, or 14 days; and surface and subsurface drip (with one, two, or three buried laterals per row) treatments were irrigated when accumulated crop evapotranspiration reached 2.5 mm. The overall performance showed that trees irrigated by surface and subsurface drip were significantly larger, produced higher yields, and had higher water use efficiency than trees irrigated by microjets. In fact, more than twice as much water had to be applied to trees with microjets than to trees with drip systems in order to achieve the same amount of vegetative growth and yield. Yield and water use efficiency were also higher under surface and subsurface drip irrigation than under furrow irrigation, although tree size was similar among the treatments. Little difference was found between trees irrigated by surface and subsurface drip, except that trees irrigated with only one subsurface drip lateral were less vigorous, but not less productive, than trees irrigated by one surface drip lateral, or by two or three subsurface drip laterals. Within furrow and microjet treatments, irrigation frequency had little effect on tree development and performance with the exception that furrow irrigation every 3 weeks produced smaller trees than furrow irrigation every 1 or 2 weeks.

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