Determination of Crop Water Requirements for Maize in Abshege Woreda, Gurage Zone, Ethiopia

Abirdew, Solomon; Mamo, Girma; Mengesha, Mengistu

doi:10.4172/2157-7617.1000439

Cited by 5 publications

(6 citation statements)

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“…According to [7] in rain-fed cropping, the estimated crop water requirement is an important parameter to use alternate practices like mulching, reducing plant population by certain percentage in order to reduce the stiff competition. To estimate the reference evapotranspiration and crop water requirement the major climate parameters are crucial, following the rule and regulation of scientific investigation and theories, ten years (2008-2017) Indibir station climatological records of (sunshine duration hr/day), maximum and minimum temperature ( O C), humidity (%) and wind speed (km/day) at 2 meters height will be used in FAO Penman Monteith model.…”

Section: Crop Water Requirementmentioning

confidence: 99%

Irrigation Practices as Alternative Means of Supporting Rain-fed Agriculture: A Case Study of Potato (Solanum tuberosum L.)

2019

JAAS

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Estimation of evapotranspiration is important for study, design, determining crop water requirement and management of irrigation systems. Also it's important for determining irrigation water requirement during dry spell and water shortage i.e. when the evapotranspiration is greater than effective rainfall. Based on this, the study was conducted in Cheha district, Gurage Zone with determine crop water requirement of potato. In line to this, ten years climatological recorded data (2008-2017) for Indibir station on (sunshine duration hr /day), maximum and minimum temperature (O C), humidity (%) and wind speed (km/day) at 2 meters height were used to determine ET o using Penman combination method. Secondary data were used to collect important soil parameters required for determination of crop water requirement. Lengths of growing periods, planting date and crop varieties data were received from the validation value of the local farmers and CDAO. Crop coefficients (kc), rooting depth, critical depletion fractions, yield response factors and crop height were obtained from food and agriculture organization of the United Nations guidelines (No. 56). The analyzed data indicated that reference crop evapotranspiration ranged from 2.40 to 4.73 mm with a mean of 3.56mm. The assessment has showed that the water requirement of potato is 63.2, 84.1, 145.8 and 77.2mm during initial, development, mid and late growth stages, respectively. The effective rainfall contribution throughout the growing stage of potato in the area is 8.5, 23, 187.2 and 158.1mm all through initial, development, mid and late growth stages, whereas the net irrigation requirement of potato throughout the dry spell period is 52.9, 61.3, 14.9 and 0mm in initial, development, mid and late growth stages, respectively. Soil and water conservation management practice, water harvesting technology and agronomic practices should be applied, principally mulching is very important to save soil moisture during high heat stress and dry spell or water shortage.

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Section: Crop Water Requirementmentioning

confidence: 99%

Irrigation Practices as Alternative Means of Supporting Rain-fed Agriculture: A Case Study of Potato (Solanum tuberosum L.)

2019

JAAS

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“…Crop water requirements play a key role in irrigation arrangement, designing, and water management in irrigated agriculture [2]. In agreement with this, the literature is rich in studies on ET c and its effects, especially for common crops such as maize [3], wheat [4], and paddy rice [2]. However, limited information is found on carrots, especially for the part of SSA.…”

Section: Introductionmentioning

confidence: 96%

Carrot Productivity under Various Levels of Irrigation and Fertilization

Ciza

Silungwe

Kihupi

2022

ARJA

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Carrot (Daucus carota L.) is normally grown under irrigation system. In Tanzania, carrot productivity is still low, mainly due to poor agronomic practices as a result of limited information on optimal levels of irrigation water that enhance crop production. Thus, a study was conducted to evaluate the interactions between various irrigation levels under drip irrigation and soil-based NPK fertilizer for optimal growth, yield, and sugar content of carrots in Morogoro, Tanzania. The crop water requirement was calculated in terms of crop evapotranspiration (ETc) as the product of ETo, Kc, and the ground cover reduction factor (Kr). Soil-based fertilizer was applied at a level of 150 kg NPK ha-1, while irrigation levels applied were 100, 80, and 60% of ETc. It was found that the growth, yield, and sugar content of carrots were affected differently at various irrigation water (IW) application levels. The growth parameters of carrots improved consistently to optimum IW levels. Further, the highest yield of 33.0 tons ha-1 of carrots was obtained under 100% of IW, and the lowest yield of 18.47 tons ha-1 was obtained at 60% of IW. The 60 and 80% IW level yields did not differ significantly (p>0.05). Carrots grown at a deficit irrigation water level of 80% were found to have the highest content of sugar. Therefore, for optimal growth and yield, an irrigation level of 100% is recommended for carrots. However, for high sugar content, an irrigation level of 80% is recommended.

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“…Thus, the total of the individual crop water requirements (CWR) determined for each irrigated crop is the net irrigation water requirements (NIWR) under a particular scheme for a given year. In order to automatically account for multiple cropping (several cropping periods per year), the crop water requirements for each cropping phase are individually calculated [3,4]. A value for the irrigation water requirements is produced by dividing the scheme's area, and it can be represented in mm.…”

Section: Introductionmentioning

confidence: 99%

“…When the soil water level is at the field's maximum, crops will transpire water at the fastest rate possible. In particular, during drought years, the seasonal crop water requirements is essential for planning your mixed crop planting [4]. In poor nations around the world, there is a lack of adequate data on the irrigation water requirements of the majority of crops [9,11].…”

Section: Introductionmentioning

confidence: 99%

Water Requirement of Selected Crops for Sangareddy District of Telangana Using CROPWAT 8.0

Kumar¹,

Gautam²,

Hemalatha³

et al. 2022

IJECC

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The precise selection of appropriate crops that are compatible with the soil and crop water requirements (CWR) in a particular area is necessary for effective land and water management. A study was conducted to ascertain the agricultural water requirements of a few chosen crops for the Sangareddy District of Telangana. The crops include Rice, Sugarcane, Soybean, Maize, Cotton, Black gram, Green gram, and Bengal gram. Using meteorological data from the past 10 years stored in CROPWAT, the amount of water needed by each crop was calculated. The FAO Penman-Monteith method was used to determine reference crop evapotranspiration (ET0). The study shows that reference crop evapotranspiration, ETo varied from 7.96 mm/day to 3.14 mm/day in the years between 2010 – 2021. The crop water requirement (CWR) and Net irrigation requirement for Rice were 595.5 mm and 331.9 mm, Maize was 366.6 mm and 64.3 mm, Cotton was 612.7 mm and 283.8 mm, Sugarcane was 1902.1 mm and 1189.3 mm, Soybean was 270.9 mm and 0.0mm, the Black gram was 332.1 mm and 22.1 mm, Green gram was 342.7 mm and 13.3 mm and Bengal gram was 344.9 mm and 316.1 mm. The results were accurate R2 was 0.84 compared with the Class A pan. This study demonstrates that the CROPWAT model is helpful for computing the crop water requirement which needs for the appropriate administration of water assets.

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Determination of Crop Water Requirements for Maize in Abshege Woreda, Gurage Zone, Ethiopia

Cited by 5 publications

References 0 publications

Irrigation Practices as Alternative Means of Supporting Rain-fed Agriculture: A Case Study of Potato (Solanum tuberosum L.)

Irrigation Practices as Alternative Means of Supporting Rain-fed Agriculture: A Case Study of Potato (Solanum tuberosum L.)

Carrot Productivity under Various Levels of Irrigation and Fertilization

Water Requirement of Selected Crops for Sangareddy District of Telangana Using CROPWAT 8.0

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