Scheduling irrigation from wetting front depth

Stirzaker, Richard; Maeko, T.; Annandale, J. G.; Steyn, J. M.; Adhanom, G.T.; Mpuisang, T.

doi:10.1016/j.agwat.2016.06.024

Cited by 21 publications

(7 citation statements)

References 19 publications

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“…Liang et al (2016) used data of soil water tension from wireless soil moisture sensors and the van Genuchten model (van Genuchten, 1980) to schedule irrigation water. Stirzaker et al (2017) used electronic detectors for wetting front of infiltrated irrigation water through the soil profile to close a solenoid valve at a certain value to manage irrigation water. Those technologies, however, require high initial investment; therefore, the foundation of cheap technologies will encourage farmers to save irrigation water.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Irrigation Depth Using a Plant Growth Model and Weather Forecast

Baki¹,

Fujimaki²,

Tokumoto³

et al. 2018

JAS

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Numerical models of crop response to irrigation and weather forecasts with internet access should be fully utilized in modern irrigation management. In this respect, we developed a new numerical scheme to optimize irrigation depth that maximizes net income. Net income was calculated as a function of cumulative transpiration over irrigation interval which depends on irrigation depth. To evaluate this scheme, we carried out a field experiment for groundnut (Arachis hypogaea L.) grown in a sandy field of the Arid Land Research Center, Tottori University, Japan. Two treatments were established to compare the net income of the proposed scheme with that of an automated irrigation system. Results showed that although the proposed scheme gave a larger amount of seasonal irrigation water 28%, it achieved 2.18 times of net income owing to 51% higher yield compared to results of the automated irrigation system. This suggests that the proposed scheme would be more economical tool than automated irrigation systems to optimize irrigation depths.

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Section: Introductionmentioning

confidence: 99%

Optimizing Irrigation Depth Using a Plant Growth Model and Weather Forecast

Baki¹,

Fujimaki²,

Tokumoto³

et al. 2018

JAS

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“…Konsep penyediaan air dalam jumlah yang cukup dan seimbang dalam pertumbuhan tanaman adalah kandungan air antara kapasitas lapang dan titik layu permanen atau yang disebut dengan air tersedia (Liang, Liakos, Wendroth, & Vellidis, 2016;Stirzaker et al, 2016). Kapasitas lapang itu merupakan kandungan air dalam tanah, biasanya dapat dicapai 2 sampai 3 hari setelah saat kejadian hujan atau pembasahan ketika proses drainase berhenti.…”

Section: Analisis Curah Hujanunclassified

Analisis Penjadwalan Irigasi pada Budidaya Tanaman Talas Pratama (Colocasia esculenta (L). Schott var. Pratama) Menggunakan CROPWAT 8.0

Nurliani

Dwiratna²,

Prawiranegara³

2019

Teknotan

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Tanaman Talas (Colocasia esculenta (L). Schott ) merupakan salah satu bahan pangan lokal yang dapat digunakan sebagai penunjang swasembada pangan nasional. Salah satu cara untuk menunjang pertumbuhan dan perkembangan yang baik dilakukan kajian analisis penjadwalan irigasi yang tepat. Penelitian ini dilakukan untuk mengkaji penjadwalan irigasi pada budidaya Talas Pratama (Colocasia esculenta (L). Schott var. Pratama) di lahan penelitian menggunakan aplikasi Cropwat 8.0 untuk mengoptimalkan ketersediaan air. Metode yang digunakan dalam penelitian ini adalah deskriptif analisis yaitu dengan mengumpulkan data-data yang dibutuhkan serta menganalisis dan menggambarkan besarnya kebutuhan air dan interval pemberian air irigasi dengan menggunakan Software Cropwat 8.0 yang dikembangkan oleh FAO. Interval waktu yang digunakan yaitu berdasarkan setiap tahap pertumbuhan talas dengan jumlah air yang diberikan hingga memenuhi kapasitas lapang pada lahan penelitian. Hasil penelitian ini menunjukan bahwa jumlah kebutuhan air tanaman Talas Pratama (Colocasia esculenta (L). Schott var. Pratama) berdasarkan Cropwat 8.0 yaitu sebesar 1093.9 mm sedangkan kebutuhan air irihasi untuk interval 3 hari, dan 1.853.400 liter untuk interval 4 hari adalah 1.605.150 liter pada lahan seluas 1500 m2.

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“…Nitrogen in potato is critical for high yields, and nitrogen availability cannot limit for potato growth. The results of studies on fertilizer-irrigation relationship lead to the following conclusion: (i) water use efficiency is raised by fertilizer which increases dry matter production, (ii) the response to fertilizer is generally of a higher order under irrigated conditions than under unirrigated conditions, and (iii) response to frequent irrigations is generally enhanced by an increase in the level of fertilizer application [11], [24] - [28]. Figure 4 showed the nitrogen content of potato tubers Granola and Eigenheimer cultivar.…”

Section: Impact Of Irrigation Interval To Total Nitrogenmentioning

confidence: 99%

Impact of Interval Irrigation on Amino Acids Composition and Minerals Content of Potato Tubers Granola and Eigenheimer Cultivars

Bafdal

Wibowo

2019

Int. J. Adv. Sci. Eng. Inf. Technol.

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In general potato suitable cultivated in the highland area, the reasoning is in this altitude area the tuber's growth of potato in which provides the optimum climatic condition. Vegetable such as potato is growth at any time of the year, depending upon the availability of water or irrigation water. The farmers also the cultivation of potato in medium altitude area due to the availability of the area is limited. Therefore cultivation of tubers in medium altitude area is investigated. Potato Eigenheimer cultivars and Granola cultivars were planted at a medium altitude area of 754 m above sea level; in research station of campus Universitas Padjadjaran west Java Indonesia. The average temperature was 23°C. The treatments were three intervals of irrigation every two days (A1), four days (A2) and six days (A3); and the treatments were applied three of potassium fertilizer (KCL dosage: 50 (P1), 100 (P2) and 150 (P3) (kg/ha) which three levels of nitrogen. The result shows that two days of irrigation intervals (A1) and 100 kg/ha potassium (P2) obtain the highest essential amino acids concentration of Granola cultivar if compared with Eigenheimer cultivar. The interaction between the application of interval irrigation and potassium fertilizer effects to a mineral such as calcium and iron content in the tuber. While the content of both mineral is higher in Granola cultivar than that in Eigenheimer cultivar.

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Scheduling irrigation from wetting front depth

Cited by 21 publications

References 19 publications

Optimizing Irrigation Depth Using a Plant Growth Model and Weather Forecast

Optimizing Irrigation Depth Using a Plant Growth Model and Weather Forecast

Analisis Penjadwalan Irigasi pada Budidaya Tanaman Talas Pratama (Colocasia esculenta (L). Schott var. Pratama) Menggunakan CROPWAT 8.0

Impact of Interval Irrigation on Amino Acids Composition and Minerals Content of Potato Tubers Granola and Eigenheimer Cultivars

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