Evaluation of Different Moisture Depletion Levels for Water Productivity, Yield and Tuber Size of Potato under Drip Irrigation

2020 ◽  
pp. 105-108
Author(s):  
Syed Ijaz ul Hassan ◽  
Muhammad Akram ◽  
Habibullah Habib ◽  
Muhammad Imran ◽  
Muhammad Naveed Ahsan ◽  
...  
Keyword(s):  
Water Management ◽  
Soil Moisture ◽  
Drip Irrigation ◽  
Tuber Yield ◽  
Potato Crop ◽  
Water Productivity ◽  
Tuber Size ◽  
Management Research ◽  
Potato Tubers ◽  
Different Levels

A field experiment comprised of four different levels of management allowable depletion (MAD) of soil moisture for next irrigation to potato crop under drip irrigation was conducted during 2017-18 and repeated during 2018-19 at Water Management Research Farm, Renala Khurd, Okara, Pakistan. Cropwat 8.0 program was used to determine the interval and depth of next irrigation at 15, 30, 45 and 60% MAD of soil moisture. The experiments during both the years were organized in RCBD fashion with four replications. Irrigation to potato crop at 30% MAD level depicted the highest water productivity (17.28 kg/m3), followed by 60%, 15% and 45% MAD levels with water productivity values of 16.90, 16.63 and 14.60 kg/m3, respectively. The highest tuber yield was obtained when potato crop was irrigated at 60% MAD level (28.411 tons ha-1), followed by 30% MAD level (27.998 tons ha-1), 15% MAD level (26.736 tons ha-1) and 45% MAD level (24.081 tons ha-1). The maximum %age of medium sized tubers was achieved by applying irrigation to potato crop at 60% MAD level (65.70), followed by 30% MAD level (65.50), 45% MAD level (64.00) and 15% MAD level (60.50). The incidence of scab was found 2.50%, 2.75%, 3.25% and 3.75% in potato tubers at 15, 30, 45 and 60% MAD level, respectively indicating that the incidence of disease increased slightly with increase in MAD level.

scholarly journals Effect of deficit drip irrigation on yield and water productivity of potato crop

2021 ◽  
Vol 9 (2) ◽  
Author(s):  
Syed Ijaz-ul-Hassan ◽  
Arifa Khan ◽  
Shazia Erum
Keyword(s):  
Soil Moisture ◽  
Drip Irrigation ◽  
Tuber Yield ◽  
Potato Crop ◽  
Water Productivity ◽  
Water Application ◽  
Potato Tubers ◽  
The Right ◽  
Near Future ◽  
Adequate Management

On the eve of changing climate, it is expected that there will be a competition to reallocate water for agricultural, industrial and urban needs in near future. Thus, in view of the increased water scarcity, an adequate management for water application is required to maximize water use and increase yield. In this regard, a field trial comprising four deficit drip irrigation treatments on potato crop under drip irrigation was conducted in filed condition using RCB design with four replications. Cropwat 8.0 program was used to determine the interval and depth of next irrigation at 15, 30, 45 60% management allowable depletion (MAD) of soil moisture. The outcomes indicated that irrigation to potato crop at 30% MAD level gave the highest water productivity (17.28 kg/m3) followed by 60, 15 and 45% MAD levels. Maximum %age of medium sized tuber was achieved by applying irrigation to potato crop at 60% MAD level (65.70) followed by 30% MAD level (65.5), 45% MAD (64.0) and 15% MAD level (60.50). The incidence of scab was found 2.50%, 2.75%, 3.25% and 3.75% in potato tubers at 15, 30, 45 and 60% MAD level, respectively. Thus, growers can save the water by adopting this water saving technique without reduction in tuber yield. For proper adaptation of new technique and practice, common farmer of Pakistan should be educated in term of visits to govt. research institutions and adoptive research farms to understand the right step to words better yield.

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.

The effects of the growth-regulating compounds methyl decanoate and 2, 3, 5-triiodobenzoic acid on potato tuber size

1976 ◽  
Vol 86 (2) ◽  
pp. 251-255
Author(s):  
D. C. E. Wurr
Keyword(s):  
Potato Tuber ◽  
Size Distribution ◽  
Tuber Yield ◽  
Potato Crop ◽  
Total Yield ◽  
Tuber Size ◽  
Tuber Initiation ◽  
Triiodobenzoic Acid ◽  
Tuber Size Distribution ◽  
Methyl Decanoate

SummaryApplication of methyl decanoate to a potato crop about the time of tuber initiation reduced the total yield and the yield of tubers in the grade 2·5–5·5 cm though neither of these reductions were significant. However, application of 2,3,5-triiodobenzoic acid increased the yield of tubers 2·5–5·5 cm by up to 20% while having no significant effect on total tuber yield. This change in the tuber size distribution was due to a more even partition of photosynthate between tubers and not to an increase in the total number of tubers.

scholarly journals Assessment of performance of potato crop under modified microclimates in rice based cropping system of Upper Brahmaputra valley zone of Assam

2021 ◽  
Vol 21 (3) ◽  
pp. 249-253
Author(s):  
M. PANGING ◽  
P. NEOG ◽  
R. L. DEKA ◽  
K. MEDHI
Keyword(s):  
Soil Moisture ◽  
Soil Temperature ◽  
Water Hyacinth ◽  
Tuber Yield ◽  
Growth Parameters ◽  
Potato Crop ◽  
Cropping System ◽  
Moisture Stress ◽  
Moisture Retention ◽  
Planting Dates

A field experiment was conducted during rabi, 2017-18 in Assam Agricultural University, Jorhat to identify appropriate adaptive strategies for combating ill effect of heat and moisture stress through modifying microclimate in rice-potato double cropping system. The potato variety – Kufri Jyoti was planted in split plot design with 3 dates starting from 10 November at 10 days interval (main plots) and three mulching treatments with water hyacinth, black polythene and without mulching (sub-plots) following recommended agronomic practices. The study revealed that there were 11.8 and 7.0 per cent increase in average soil moisture content under water hyacinth and black polythene, respectively as compared to non-mulched treatment. On the other hand, soil temperature was 0.5 to 1.5 °C (morning) and 1.1 to 2.3°C (evening) lower under water hyacinth, but 1.2 to 2.1°C (morning) and 1.7 to 2.6 (evening) higher underblack polythene as compared to non-mulched crop. In all planting dates, crop growth parameters like LAI and biomass production were observed to be highest under water hyacinth, followed by black polythene and without mulching. Among the mulching treatment the highest and lowest tuber yield was recorded under water hyacinth (120.81 q ha-1) and non-mulched treatment (85.0 q ha-1), respectively in all planting dates.It was found that the tuber yield was significantly and positively correlated (at 5% level) with theaverage soil moisture retention (mm) in upper 30 cm layer of soil during tuber formation to physiological maturity (r =77*). Increase in tuber yield (up to 42.2%) under water hyacintheven in case of late plantings (beyond 10 November) was probably due to increase insoil moisture retention (8.1 to 15.7 %) and reduction of soil temperature (1 to 1.8°C) under water hyacinthwhich endowed with favorablehydrothermal environment as compared to that under black polythene and non mulched treatment. 

The interactions of water and fertilizer nitrogen in effects on growth pattern and yield of potatoes

1978 ◽  
Vol 91 (1) ◽  
pp. 161-172 ◽  
Author(s):  
B. J. Clutterbuck ◽  
K. Simpson
Keyword(s):  
Soil Moisture ◽  
Field Experiments ◽  
Tuber Yield ◽  
Potato Crop ◽  
Nitrogen Application ◽  
Fertilizer Nitrogen ◽  
High Soil Moisture ◽  
Leaf Area Duration ◽  
Normal Rainfall ◽  
Made In

SummaryThree field experiments in 2 years were made in S.E. Scotland to investigate the effect of water (normal rainfall or irrigation to maintain soil moisture tension between pF 2·0 and 2·5) on the response of the potato crop to nitrogen fertilizer (0, 100, 200 or 300 kg N/ha).Final tuber yield was closely related to leaf area duration. Addition of water reduced the delay in early haulm growth resulting from fertilizer nitrogen application. The beneficial effect of reducing moisture tension could not be related to water per se, nitrate, ammonium or conductivity levels in the fertilizer band or nitrogen uptake. Accumulation of nitrate in the roots and stems + petioles early in the season indicated that the rate of protein synthesis was reduced at high soil moisture tension in the presence of fertilizer nitrogen.In a long growing season (1971, 153 days) there was a significant response of tuber yield to nitrogen, with an increase in yield even at the highest rate tested (300 kg N/ha) and irrigation enhanced this response.In a normal season (1970, ca.130 days) there was a significant irrigation x nitrogen interaction on tuber yield. Irrigation increased the optimum rate of nitrogen from 100 to 200 kg N/ha in one experiment and from nil to 200 kg N/ha in another.Addition of water increased the number of tubers at harvest but the effect of nitrogen was less consistent. Yield increases resulting from application of nitrogen or reduction in soil moisture tension were mainly due to increases in the proportion of large tubers.

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.

scholarly journals Promoting Social Learning in Soil Water and Nutrients Management Using Farmer—Friendly Monitoring Technology

Proceedings ◽  
2019 ◽  
Vol 36 (1) ◽  
pp. 19 ◽  
Author(s):  
Fandika ◽  
Stirzaker ◽  
Chipula
Keyword(s):  
Water Management ◽  
Soil Moisture ◽  
Social Learning ◽  
Soil Water ◽  
Smallholder Farmers ◽  
Water Productivity ◽  
Measurement Data ◽  
Learning By Doing ◽  
Learning System ◽  
Sensor Technology

Soil water management is typically by trial and error among smallholder farmers. Social learning in the use of farmer—friendly soil-water and nutrients monitoring tools were promoted in Malawi to improve productivity. A simple tool (chameleon) which was designed to fit the mental model of African farmers and to give an output that is linked to action was deployed to 198 farmers in nine irrigation schemes. Chameleon illustrates information on soil moisture status by colours—blue, green and red colours representing adequate moisture, moderate and dry soil status, respectively. The use of colours and not numbers promoted inclusiveness across illiterate and all gender categories. Farmers participated in sensors’ installation, soil moisture measurement, data visualization and learning by doing to get insights from their participation. The chameleon was combined with an on-line communication and learning system to improve water management at scheme level. The results indicated that: (1) the tool gave farmers new frames of reference; (2) it improved farmers on time, labour and water saving by reducing irrigation intervals; (3) it gave farmers new reference of experience to change their irrigation traditions; (4) it also reduced conflict for water in irrigation schemes between users apart from improving water productivity. Use of these tools made a rigor that make scientists easily communicate science to lay farmer and initiated the movement of farmers who know how to manage water. Social learning in sensor technology helped to increase farmers’ resilience to climate change and shaping the science of the future.

scholarly journals Dynamics of the Potato Root (Solanum Spp.) Under Different Levels of Soil Moisture, in the Geographical Region of Riobamba, Ecuador

2021 ◽  
Author(s):  
R. Peña Murillo ◽  
J. Velasteguí Cáceres ◽  
J. León Ruiz
Keyword(s):  
Soil Moisture ◽  
Drip Irrigation ◽  
Sandy Loam ◽  
Maximum Yield ◽  
Gravimetric Method ◽  
Field Capacity ◽  
Front Wall ◽  
Root Dynamics ◽  
Different Levels ◽  
Solanum Spp

The root system of the potato (Solanum spp.) is often characterized as superficial and inefficient, with little capacity to extract water from the soil. Through a geographical study of the study area and root dynamics, the root behavior of the Victoria variety in Riobamba, Ecuador was evaluated, with the aim of assessing the applicability of “drip irrigation strategies with different levels of soil moisture” that allow the optimization of the water resource and the degree of tolerance of the crop to the lack of water through three treatments, 25%, 50% and 75%, between the levels of field capacity and permanent wilting point that are equivalent to 12.25% (T1), 10.5% (T2) and 8.75% (T3) of sandy loam soil moisture. Through front-wall rhizotrons the gravimetric method for recording soil moisture, and the Scheffé test, with a randomized block experimental design, were completed. The maximum root development was reached 110 days after the cultivation was established, with 77.5 cm (T3) at lower water availability. The maximum yield was reached at 132 days, with 34.72 t/ha (T1), followed by 32.11 t/ha (T2) with 126 days, and 28.45 t/ha (T3) with 121 days. Therefore, it is concluded that the maximum permissible humidity level for the variety is 10.5%, since lower levels would generate large losses. Keywords: rizotron, drip irrigation, soil moisture, geographical analysis. Resumen El sistema de raíces de la papa (Solanum spp.) a menudo se caracteriza por ser superficial e ineficiente, con poca capacidad para extraer agua del suelo. Mediante un estudio geográfico del área de estudio y la dinámica radicular se evalúa el comportamiento radicular de la variedad victoria en Riobamba-Ecuador, con el objetivo de valorar la aplicabilidad de estrategias de “riego por goteo con diferentes niveles de humedad en el suelo” que permitan la optimización del recurso hídrico y el grado de tolerancia del cultivo a la falta de agua mediante tres tratamientos 25%, 50% y 75% entre los niveles de capacidad de campo y punto de marchitez permanente que equivalen a 12,25%(T1), 10,5%(T2) y 8,75%(T3) de humedad del suelo franco arenoso. A través de rizotrones de pared frontal, el método gravimétrico para el registro de la humedad del suelo y la prueba de Scheffé, con un diseño experimental de bloques completos al azar. El máximo desarrollo radicular se alcanzó a los 110 días de establecido el cultivo con 77,5cm (T3) a una menor disponibilidad de agua. El rendimiento máximo se alcanzó a los 132 días con 34,72t/ha (T1), seguido de 32,11t/ha (T2) con 126 días y 28,45t/ha (T3) con 121 días. Por lo tanto, se concluye que el máximo nivel de humedad permisible para la variedad es 10,5%, ya que niveles inferiores generarían grandes pérdidas. Palabras claves: rizotrón, riego por goteo, humedad del suelo, análisis geográfico.

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