scholarly journals Penerapan Irigasi Tetes Emiter Tali Dengan Bebagai Selang Waktu Irigasi Pada Tanaman Semangka

2020 ◽  
Vol 19 (2) ◽  
pp. 128
Author(s):  
Muhammad Idrus Idrus ◽  
Surya Surya
Keyword(s):  
Soil Moisture ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Root Zone ◽  
Block Design ◽  
Water Productivity ◽  
Good Time ◽  
Time Interval ◽  
Irrigation Interval ◽  
Irrigation Water Productivity

The objectives of the research were (1) To know watermelon yield and irrigation water productivity of watermelon by used drip irrigation with nylon rope emitter on various time irrigation intervals, (2) To determined the good time irrigation interval for watermelon production by using the drip irrigation with nylon rope emitter. The research was conducted at the research field with four-time irrigation intervals were 1,2,3, and 4 days of time irrigation interval. The research was arranged in Completely Randomized Block Design. The result of the research showed that the time irrigation interval was not significantly affected yield and irrigation water productivity of watermelon. The soil moisture in the root zone at 30 cm depth of 23,23—23,88% before irrigation still in range of the available soil moisture content for plants. The average of watermelon yield and irrigation water productivity of watermelon were 5,07—5,45 kg/plant and 115,15—123,79 kg/m3. The good time interval of irrigation for watermelon production by using drip irrigation with rope emitter was 4 days time interval of irrigation.

Development and Evaluation of a Variable-Rate Irrigation Management Method in the Mississippi Delta

2021 ◽  
Vol 64 (1) ◽  
pp. 287-298
Author(s):  
Ruixiu Sui ◽  
Jonnie Baggard
Keyword(s):  
Electrical Conductivity ◽  
Soil Moisture ◽  
Water Use ◽  
Irrigation Water ◽  
Mississippi Delta ◽  
Water Productivity ◽  
Variable Rate ◽  
Irrigation Water Use ◽  
Irrigation Water Productivity ◽  
Variable Rate Irrigation

HighlightsWe developed and evaluated a variable-rate irrigation (VRI) management method for five crop years in the Mississippi Delta.VRI management significantly reduced irrigation water use in comparison with uniform-rate irrigation (URI). There was no significant difference in grain yield and irrigation water productivity between VRI and URI management.Soil apparent electrical conductivity (ECa) was used to delineate irrigation management zones and generate VRI prescriptions.Sensor-measured soil water content was used in irrigation scheduling.Abstract. Variable-rate irrigation (VRI) allows producers to site-specifically apply irrigation water at variable rates within a field to account for the temporal and spatial variability in soil and plant characteristics. Developing practical VRI methods and documenting the benefits of VRI application are critical to accelerate the adoption of VRI technologies. Using apparent soil electrical conductivity (ECa) and soil moisture sensors, a VRI method was developed and evaluated with corn and soybean for five crop years in the Mississippi Delta. Soil ECa of the study fields was mapped and used to delineate VRI management zones and create VRI prescriptions. Irrigation was scheduled using soil volumetric water content measured by soil moisture sensors. A center pivot VRI system was employed to deliver irrigation water according to the VRI prescription. Grain yield, irrigation water use, and irrigation water productivity in the VRI treatment were determined and compared with that in a uniform-rate irrigation (URI) treatment. Results showed that the grain yield and irrigation water productivity between the VRI and URI treatments were not statistically different with both corn and soybean crops. The VRI management significantly reduced the amount of irrigation water by 22% in corn and by 11% in soybean (p = 0.05). Adoption of VRI management could improve irrigation water use efficiency in the Mississippi Delta. Keywords: Soil electrical conductivity, Soil moisture sensor, Variable rate irrigation, Water management.

scholarly journals Zero Tilled-Paddy Straw Mulched Potato (Solanum tuberosum) Cultivation in the Coastal Saline Soils Reduce Soil Salinity, Increase Yield and Profitability

Proceedings ◽  
2020 ◽  
Vol 36 (1) ◽  
pp. 147
Author(s):  
Sukanta Kumar Sarangi ◽  
Buddheswar Maji ◽  
Parbodh Chander Sharma ◽  
Saheb Digar ◽  
Kshirendra Kumar Mahanta ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Soil Salinity ◽  
Irrigation Water ◽  
Block Design ◽  
Water Productivity ◽  
Foliar Spray ◽  
Cropping System ◽  
Dry Season ◽  
Paddy Straw ◽  
Net Return

Rice is the predominant crop during wet season (July–December) and majority of land remain fallow during dry season (January–June) in the coastal saline region of West Bengal, India. Sustainable cropping system intensification in this salt affected region needs improved package of practices which conserve soil moisture, facilitate early crop establishment, ensures profitability and has positive effect on soil health. To achieve these objectives in a rice-based cropping system, we evaluated seven treatments for potato crop during the dry season viz. T1: ridge sowing (control), T2: Zero tillage (ZT) sowing with 9 t ha−1 paddy straw mulching (PSM), T3: T2 + foliar spray of nutrients, T4: ZT sowing with 12 t ha−1 PSM, T5: T4 + foliar spray of nutrients, T6: ZT sowing with 15 t ha−1 PSM, T7: T6 + foliar spray of nutrients in randomized block design with five replications. This study was conducted during 2016-2019 in the Gosaba island of the Indian Sundarbans. Cost of cultivation of potato reduced by about 27% due to ZT sowing (₹ 81,287 ha−1) compared to ridge sowing (₹ 1,11,260 ha−1). Tuber yield, net return and irrigation water productivity was significantly increased in T5, T6 and T7 over other treatments. There was reduction in soil salinity (ECe reduced from 5 to 3 dS m−1), bulk density (from 1.49 to 1.44 Mg m−3), irrigation water use (less 20 cm), conservation of soil moisture (4–8%), and increase in organic carbon (0.39 to 0.44%) due to ZT sowing with PSM. Rice-ZT potato-green gram cropping system was the most profitable one with highest net return (₹ 1,71,752 ha−1), however, the benefit-cost ratio was highest (2.33) with Rice-ZT potato cropping system.

scholarly journals On-station Evaluation of Family Drip Irrigation System in North-West Ethiopia

2019 ◽  
pp. 1-7
Author(s):  
Kasa Mekonen Tiku ◽  
Shushay Hagoes ◽  
Berhane Yohanes
Keyword(s):  
Irrigation Water ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Water Productivity ◽  
Northwest Ethiopia ◽  
Furrow Irrigation ◽  
Drip Irrigation System ◽  
North West ◽  
Irrigation Methods ◽  
Irrigation Water Productivity

The study was carried out at the effect of drip and surface irrigation (Furrow irrigation) methods on onion and sesame crops from December 2011 to May 2012 in the Tigray region of Northwest Ethiopia. The objective was to evaluate the family drip irrigation system in comparison with furrow irrigation system in terms of irrigation water productivity (using 100% ETc for both commodities). The water saved in drip irrigation over furrow irrigation was found to be 33% for onion and sesame crops. The irrigation water productivity of onion was 0.9 kg/m3 and 0.55 kg/m3 under drip and furrow irrigation methods respectively. The irrigation water productivity of sesame was 0.14 kg/m3 and 0.045 kg/m3 under drip and furrow irrigation methods respectively.

IRRIGATION SCHEDULE OF LONG-FRUIT CUCUMBERS AND HYDROAMELIORATIVE REQUIREMENTS FOR DRIP IRRIGATION IN PLASTIC GREENHOUSE

2019 ◽  
pp. 307-313
Author(s):  
Rumiana Kireva ◽  
Roumen Gadjev
Keyword(s):  
Irrigation Water ◽  
Drip Irrigation ◽  
Water Productivity ◽  
Irrigation Schedule ◽  
Water Source ◽  
Climate Conditions ◽  
Irrigation Technology ◽  
Irrigation Technologies ◽  
Pressure Flows ◽  
Efficient Water Use

The deficit of the irrigation water requires irrigation technologies with more efficient water use. For cucumbers, the most suitable is the drip irrigation technology. For establishing of the appropriate irrigation schedule of cucumbers under the soil and climate conditions in the village of Chelopechene, near Sofia city, the researchеs was conducted with drip irrigation technology, adopting varying irrigation schedules and hydraulic regimes - from fully meeting the daily crops water requirements cucumbers to reduced depths with 20% and 40%. It have been established irrigation schedule with adequate pressure flows in the water source, irrigation water productivity and yields of in plastic unheated greenhouses of the Sofia plant.

ВОДНЫЙ РЕЖИМ ОРОШАЕМЫХ СОЛОНЦОВЫХ КОМПЛЕКСНЫХ ПОЧВ И ОСОБЕННОСТИ ЕГО РЕГУЛИРОВАНИЯ

2020 ◽  
Author(s):  
Valery Yashin
Keyword(s):  
Soil Moisture ◽  
Ground Water ◽  
Irrigation Water ◽  
Surface Runoff ◽  
Root Zone ◽  
Irrigation Methods ◽  
Salt Flats

Представлены материалы исследований формирования режима влажности и динамики грунтовых вод орошаемых солонцовых комплексных почв при различных способах полива, проведенные в Волгоградском Заволжье. Установлена значительная неравномерность распределения влажности почвы при поливах дождеванием. Отмечается поверхностный сток по микрорельефу до 30% от поливной нормы, что приводит к недостаточности увлажнения корневой зоны на солонцах и переувлажнению почв в понижениях микрорельефа и потере оросительной воды на инфильтрационное питание грунтовых вод.The article presents the materials of research on the formation of the humidity regime and dynamics of ground water of irrigated saline complex soils under various irrigation methods, conducted in the Volgograd Zavolzhye. A significant unevenness in the distribution of soil moisture during irrigation with sprinkling has been established. There is a surface runoff on the microrelief of up to 30% of the irrigation norm, which leads to insufficient moisture of the root zone on the salt flats and waterlogging of the soil in the microrelief depressions and loss of irrigation water for infiltration feed of ground water.

scholarly journals Water and Nitrogen Productivity of Potato Growth in Desert Areas under Low-Discharge Drip Irrigation

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 970 ◽  
Author(s):  
Pavel Trifonov ◽  
Naftali Lazarovitch ◽  
Gilboa Arye
Keyword(s):  
Drip Irrigation ◽  
Driving Forces ◽  
Root Zone ◽  
Agricultural Soils ◽  
Potato Crop ◽  
Water Productivity ◽  
Potato Production ◽  
N Leaching ◽  
Limiting Factor ◽  
Potato Growth

Narrow profit margins, resource conservation issues and environmental concerns are the main driving forces to improve fertilizer uptake, especially for potatoes. Potatoes are a high value crop with a shallow, inefficient root system and high fertilizer rate requirements. Of all essential nutrients, nitrogen (N) is often limiting to potato production. A major concern in potato production is to minimize N leaching from the root zone. Therefore, the main objective of this study was to examine the potato crop characteristics under drip irrigation with low-discharge (0.6 L h−1) and to determine the optimal combination of irrigation (40, 60, 80, and 100%) and fertigation (0, 50, and 100%) doses. In this study, the 80% (438.6 mm) irrigation dose and a 50% (50 mg N L−1) fertigation dose (W80%F50%) showed that these doses are sufficient for optimal potato yield (about 40 ton ha−1) in conjunction with water and fertilizer savings. Moreover, this treatment did not exhibit any qualitative changes in the potato tuber compared to the 100% treatments. When considering water productivity and yield, one may select a harsher irrigation regime if the available agricultural soils are not a limiting factor. Thus, higher yields can be obtained with lower irrigation and fertigation doses and a larger area.

scholarly journals Can Sustained Deficit Irrigation Save Water and Meet the Quality Characteristics of Mango?

Agriculture ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 448
Author(s):  
Leontina Lipan ◽  
Aarón A. Carbonell-Pedro ◽  
Belén Cárceles Rodríguez ◽  
Víctor Hugo Durán-Zuazo ◽  
Dionisio Franco Tarifa ◽  
...  
Keyword(s):  
Irrigation Water ◽  
Deficit Irrigation ◽  
Block Design ◽  
Water Productivity ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Drought Tolerant ◽  
Randomized Block Design ◽  
Peel Color

Mango is one of the most cultivated tropical fruits worldwide and one of few drought-tolerant plants. Thus, in this study the effect of a sustained deficit irrigation (SDI) strategy on mango yield and quality was assessed with the aim of reducing irrigation water in mango crop. A randomized block design with four treatments was developed: (i) full irrigation (FI), assuring the crop’s water needs, and three levels of SDI receiving 75%, 50%, and 33% of irrigation water (SDI75, SDI50, and SDI33). Yield, morphology, color, titratable acidity (TA), total soluble solids (TSS), organic acids (OA), sugars, minerals, fiber, antioxidant activity (AA), and total phenolic content (TPC) were analyzed. The yield was reduced in SDI conditions (8%, 11%, and 20% for SDI75, SDI50, and SDI33, respectively), but the irrigation water productivity was higher in all SDI regimes. SDI significantly reduced the mango size, with SDI33 generating the smallest mangoes. Peel color significantly changed after 13 days of ripening, with SDI75 being the least ripe. The TA, AA, and citric acid were higher in SDI75, while the TPC and fiber increased in all SDI levels. Consequently, SDI reduced the mango size but increased the functionality of samples, without a severe detrimental effect on the yield.

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