5.1 Socio-economic characteristics of farmers
A total of 148 farmers were interviewed for this study. All interviewees were men as women do not work outside the home due to their common culture. Table 2 shows the age distribution of the respondents. The farmers were on average 49.8 years old, with the majority (almost 61%) being between 40 and 50 years of age.
Table 2 – frequency distribution of age of respondents
Age
|
Percent of total respondents
|
30-35
|
2.7
|
35-40
|
8.1
|
40-45
|
32.4
|
45-50
|
29.1
|
50-55
|
18.9
|
>55
|
8.8
|
Of the 148 respondents, 34% had orchard farms, 30% had crop farms, and 36% had mixes of orchard and crop farms. The diversity of the types of orchard trees and crops is shown in Figure 4. Apple tree presents in all investigated orchards. It takes 15 and 3 years for an apple and a peach tree respectively to become commercially beneficiary. Thus, peach trees are planted between apple trees to provide source of income for farmers in short time. In this way, farmers can have enough income to live on and keep investing in building apple orchards, which is why some farmers combine apple and peach fields.
The average and standard deviation of area are 1.7 ha and 3.4 ha for crop farms and 3.4 ha and 5.9 ha for orchard trees, respectively.
5.2 Irrigation behavior
5.2.1 Irrigation decision criteria
We extracted four criteria from farmers' responses to the question "How do you know when to start watering?" to examine their decisions about irrigation. The following criteria emerged:
- Fresh leaves: Farmers usually look at the leaves, and check them for freshness. The farmers decide to irrigate their fields if they feel that the leaves are not fresh enough. In other words, the freshness of the plant leaves is assessed using visual inspection. When farmers visually notice that plant leaves are not fresh, they irrigate crops or orchard trees with surface water. If there is no access to surface water, they use groundwater.
- Soil moisture: Farmers monitor soil moisture visually. If cracks are found in the soil, they dig a small hole to visually check the soil condition. They irrigate their crops with groundwater as there is no surface water.
- Fresh grass: Farmers check the grass condition under trees. If they find that the grass is drying out, they start irrigating with surface or groundwater.
- Fixed schedule: Regardless of all other factors, farmers have a fixed watering schedule.
According to the farmers' responses, before the Urmia Lake Restoration Program in 2015, there was always enough water in the irrigation canals. This allowed them to easily open the entrance gates of their farms for irrigation. However, since the beginning of this program, the surface water supply from the Mahabd dam to the irrigation canal has decreased by about 40%. Therefore, the Urmia Lake Restoration Program can be an important factor in explaining groundwater use by farmers. Under the program, surface water is distributed to farmers, and they have access to water once a month.
Based on our interviews, farmers fall into one or two of the above categories. For example, farmers can visually check both leaf freshness and soil moisture to make a watering decision. Figure 5 shows the frequency distribution of the criteria.
As shown in Figure 5, approximately 71.5% of farmers use "fresh leaf" as either the only or one of their factors for deciding whether to irrigate. 21% of farmers use "fresh leaf" and "soil dryness” as the factors in making their decision. In addition to "fresh leaf”, the use of “Soil dryness " can help farmers make irrigation decisions because leaf freshness decreases dramatically around midday, which can lead to wrong irrigation decisions. To measure leaf freshness, farmers visually check leaf characteristics such as greenness, crispness, limpness, edge shape, and softness. The data is used as input to their decision-making algorithm, which is made up of past experiences, common sense, technical knowledge, cultural beliefs, and the impact of neighbors' decisions.
In other words, farmers use mental shortcuts to determine irrigation time, which is common among farmers even in developed countries such as USA, where almost 75% of farmers use rules-of-thumb (like visual observation and “when neighbors begin to irrigate”) (NASS, 2017). This can lead to different irrigation behaviors among them.
Mental shortcuts can reveal how farmers are moving toward a reduction in water consumption. To analyze farmers’ decision on irrigation behavior, this study looks at two distinct definitions of deficit irrigation; technical deficit irrigation and behavioral deficit irrigation. Technical deficit irrigation has a well-known definition in which irrigation is less than the total water requirement of a plant and the amount of irrigation is done based on patterns (Attia et al., 2021; Khapte et al., 2019). Behavioral deficit irrigation is defined, in this study, as a subjective analysis in a farmer's mind, and relates to the farmer's decision regarding irrigation time. Upon inferring that the freshness of the plants is insufficient, the farmer starts irrigation, so deficit irrigation is not considered. Deficit irrigation is assumed to be an effective strategy for environmental conservation behavior (Montazar, 2021; UT et al., 2020), and can increase water productivity as well as farmers’ profit (Du et al., 2015; Fereres & Soriano, 2007; Karandish, 2021). While the extent of technical deficit irrigation can be assessed to find out possible options for water conservation, it can be concluded that farmers do not incorporate deficit irrigation into their decision making process. If a farmer wanted to apply deficit irrigation in his decision algorithm, he would respond with a sentence such as "when I see insufficient plant freshness, I wait a few days before starting irrigation to apply deficit irrigation". This could be the subject of another study to find out why farmers do not allow deficit irrigation.
About 11% of farmers use a fixed irrigation schedule. This fixed schedule implies that farmers do not follow the daily temperature variations that directly affect plant evapotranspiration, crops water needs and yields.
Figure 6 shows the time series of total water and agriculture release from the Mahabd dam. Total water release indicates the water volume released for agricultural, industrial, rural and environmental purposes. The total amount of water released has not decreased since 2015, but the amount released for agriculture has decreased by almost 29%. This is due to the start of the Water Cap project to reduce agricultural consumption by 40% during the Urmia Lake Restoration Program in 2015. To compensate for the reduction of available surface water, farmers have been using groundwater, which may explain the dramatic increase in groundwater use as well as the number of wells. The reduction project did not bring any changes to farmers' irrigation criteria, probably due to the ease of access to shallow groundwater (Khalaj et al., 2019; Valizadegan & Yazdanpanah, 2018). In other words, it seems farmers have not adapted to reduce water consumption.
5.2.2 Interactions among farmers
The farmer's answer to the question "If some of your neighbors start watering, will you start watering?" can show whether farmers' decisions are influenced by their neighbors or whether they are learning from their neighbors. Figure 7 shows the frequency distribution of farmers’ responses. Around 87% of farmers answered the question with "No". Lack of cooperative behavior among farmers can lead to unsustainable groundwater consumption, which can lead to increased competitive behavior and public tragedies in the future. Therefore, their cooperative behavior should be improved for future drought scenarios.
5.2.3 Forecasting future precipitation
In response to the question "Do you predict or look for precipitation forecasts for the next year?", the farmers replied "yes" or "no". Figure 8 shows the frequency distribution of answers to this question. Nearly 87% of farmers do not forecast rain or look for rain forecasts.
Surface water is supplied by the Mahabd dam which is filled with runoff from upstream precipitation. Groundwater is recharged by river flows, precipitation and irrigation seepage. Water is crucial to agricultural production, so it is expected that farmers have taken into account the precipitation forecast. Farmers do not look for data that can be attributed to water governance and technical knowledge. There are some reasons for the behavior.
Irrigation water strongly influences agriculture both on crop farms and orchard trees. Crop choice is an annual decision, and farmers have to choose a crop each year. Orchard growers do not make an annual decision, but need a production estimate to decide on production plans. These decisions are based on watering volume. Farmers were expected to follow precipitation forecast sources. Interviews revealed, however, that most farmers do not rely on precipitation forecasts. There are some possible explanations for this behavior.
Farmers in the Mahabad plain have access to reliable and scheduled water, including surface and underground water. During drought periods, a reliable source of groundwater replaced the deficit in surface water. In addition, surface water is provided by the government in a top-down structure which ignores the participatory role of farmers. Continuity of the process over the decades after the construction of Mahabad Dam led farmers to assume the government as the sole agent responsible for water supply. Thus, farmers do not see a direct relationship between precipitation distribution and their agricultural activities and incomes, so they ignore precipitation forecasts.
If crop farmers do not have access to alternative crops, they are not in a decision-making position, and will not take into account decision parameters such as rainfall. Lack of sufficient and up-to-date technical knowledge can prevent farmers from changing their crop types. In this context, farmers' knowledge and experience were analyzed based on their responses to the question "How many other crops have you grown in recent years?" (Figure 9).
The figure shows the diversity of crops that farmers are able to cultivate. To improve soil properties and reduce weed, disease and pest pressure, farmers have to practice crop rotation (Kremen et al., 2012). Therefore, those 86% of farmers who grow fewer than four different crops do not have many options to choose from each year. These farmers do not look for precipitation forecast data since it is of no use to them. Moreover, low crop diversity limits farmers' ability to adapt to hard water resource availability. Lack of agricultural knowledge or lack of financial sources may be the causes of low crop diversity.
5.3 Perception of farmers about water value in agriculture
5.3.1 Attitudes toward future
Farmers’ response to the question "If you have a new farm, which factors will you consider when choosing a crop or orchard?" will reveal the most significant influencing factors involved in their decision to choose a crop. The answer indicates whether water consumption is a significant factor or not. The content of the responses is as follows:
- I look for a lot of income, so I will choose between high value crops and orchard trees.
- I look for crops or orchard trees that are financially and technically supported by the government.
- I invested in an apple orchard, so I will continue to cultivate it.
- I look for plants that are easy to cultivate.
- No, I am not looking for other crops.
- I follow other farmers in making decisions.
- I choose crops that consume less water.
The response frequency distribution is shown in Figure 10. Since some farmers selected more than one factor, the sum of the factor frequencies exceeds 100%. The factors are:
- High income plants: Farmers choose the crop type or orchard tree that has economic value, and can generate high income for the farmer.
- Financial and technical support: Farmers look for a crop or orchard that receives technical and financial support from government agencies.
- Pursue investment in the apple orchard: Farmers definitely choose the apple tree.
- Low-difficulty cultivation: Farmers look for a type of crop or fruit that does not require much effort, such as deep plowing.
- Follow others: Farmers try to choose what other farmers usually choose.
- Plants with low water consumption: Farmers are concerned about water consumption and look for a type of crop or orchard with low needs for water.
In accordance with respondents' responses, environmental crises or water-related issues have the least impact on farmers' decisions because they are motivated by economic gain. Analysis of the responses can reveal possible future plans for farmers, especially those facing an economic downturn in apple orchards. Having a long history of producing apples in the region, the apple orchard corresponds with the farmers' responses because it generates the highest income (Panah et al., 2018), and it allows them to access experience and technical support.
Therefore, it is to be assumed that farmers have a high tendency to cultivate apple orchards. When a farmer decides to plant a field with an apple orchard, he invests about 15 years of his money and time to make the orchard profitable. Due to the high water use of apple trees, the percentage of farmers choosing to plant or replant a garden with apple orchards can cause a crisis of environmental overconsumption for decades. This means that water consumption in the region is expected to remain high.
On the contrary, there is an opportunity hidden in their response themes. The government can boost farmer productivity by offering incentives and promoting crops with low water needs, high incomes, and technical support, like the pistachio tree, which is a little-known crop. Apart from financial support, which is a challenge for the government due to difficulties, it can provide technical support and introduce the pistachio as a high-income product.
If the farmers’ attitude about the priority of water consumption changes the most sustainable environmental conditions will not happen. This change requires careful intervention based on social studies. For example, it is possible to alter farmers’ perception about the high income of apple orchards if all financial and health consequences of Lake Urmia desiccation and its main causes (Schmidt et al., 2021) are properly presented to them and incorporated into their economic decisions.
5.3.2 Self-evaluation of water consumption behavior
Analysis of farmers' responses to the question "To what extent do you think water resources are available compared to the previous question?" revealed the following themes:
- Excessive water resources: Farmers believe that water resources are plentiful, and they do not need to include the status of water resources in their decision-making process.
- Behavior with low water consumption: Farmers think that they are consuming little water.
- No other option: Farmers believe that they are in a forced situation, and cannot behave in another way to take into account the water resources.
- Other technologies will solve the problem: Farmers think that other solutions such as drip irrigation will solve the water crisis, and they have no action to take.
Farmers' perceptions of water scarcity can steer their actions towards more sustainable water management solutions (Fan et al., 2019). Community participation in water management can also be compromised if it is believed to have excessive water resources. Other studies indicate that drought periods and frequencies have increased and will increase in the future (Mirgol et al., 2021; Sobhani et al., 2019). In contrast, more than half of farmers feel that there are too many water resources in the basin. this means they do not consider it necessary to take water scarcity into account in their decisions. It's an alarm that needs a lot of attention to understand why some obvious and vague problems like the shrinking of Lake Urmia have not yet forced farmers to change their attitude to "having too much water".
Much more dangerous is the attitude of those 18.8% of farmers who believe that they have already reduced their water consumption. Since farms are dominated by rudimentary technologies and farmers' knowledge of water management is low due to the lack of an integrated training program, they are likely to have a misconception about "low water consumption", which may lead them to take no further responsibility for water level reduction schemes. This attitude makes farmers do nothing even if the lake disappears from the earth. In other words, they believe that they have taken all the necessary actions to reduce water consumption. They are likely to blame the government or other farmers for environmental problems as well as their economic consequences. Therefore, this situation can lead to violent protests and security problems.
There is a common misconception among people that technology is a perfect solution that can solve all water-related problems (De Châtel, 2007). Although only a limited number of farmers in Mahabad agree with this attitude, it can increase if serious environmental consequences directly affect their lives.