Investigating the effect of drainage on bean yield and yield components

Number of pages: 61 File Format: word File Code: 32514
Year: 2014 University Degree: Master's degree Category: Agricultural Engineering
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    Academic Thesis for Master's Degree

    Field: Agricultural Engineering, Major: Agriculture

    Abstract:

    There are about 238 thousand hectares of paddy fields in Gilan province. In order to maintain sustainable agriculture, increase production, create employment, increase the financial capacity of farmers, comply with crop rotation and thus preserve the environment, planning and managing the second crop, especially in the rice fields of the north of the country, has a high priority. One of the problems of the lack of development of the cultivated area of ??beans in the paddy fields of Gilan province is the heavy soil and the flooding of the fields due to heavy rains, especially at the beginning of growth. The construction of underground and surface drains is one of the effective solutions to prevent the flooding of fields and as a result the development of bean cultivation in the region. This research was carried out in 2012 in the research farm of the Rice Research Institute of the country located in Rasht in a factorial manner in the form of a basic design of randomized complete blocks with three replications. This experiment had 2 factors: 1) surface drainage with surfaces: without drainage, surface drainage with 5-meter intervals and surface drainage with 10-meter intervals and 2) deep drainage with surfaces without deep drainage, deep drainage with 7.5-meter intervals, deep drainage with 10-meter intervals and deep drainage with 15-meter intervals. The results showed that the effect of underground drainage on the traits of the number of sub-branches, plant height, number of pods, total weight of bean pods, weight of beans with plants in one square meter, weight of bean pods in one square meter, fresh weight and weight of dry matter was significant at a statistical level of 1%. Also, the effect of surface drainage on the traits of the number of sub-branches, total weight of bean pods, weight of beans with plants in one square meter, weight of bean pods in one square meter at a statistical level of 1% and on height traits Plant, number of pods and fresh weight were statistically significant at 5%. The mutual effect of surface and underground drainage was also significant on plant height traits and bean pod weight at a statistical level of 1% and on bean and plant weight at a statistical level of 5%. The underground drainage treatment had a significant effect on the characteristics of plant height, number of pods, number of seeds in a pod, total weight of bean pods, weight of beans with a plant in one square meter, weight of bean pods in one square meter, fresh weight and weight of dry matter. Also, the effect of surface drainage treatment on all traits showed that surface drainage with 5-meter intervals is the best treatment and no surface drainage is the worst treatment. Also, the mutual effect of surface and underground drainage showed that in the traits of plant height and bean weight per plant per square meter, underground drainage at 7.5-meter intervals and surface drainage at 5-meter intervals is the best treatment and without surface and underground drainage is the worst treatment. Also, the mutual effect of surface and underground drainage on the characteristics of the total weight of bean pods in each treatment showed that underground drainage at intervals of 10 meters and surface drainage at intervals of 5 meters is the best treatment and without surface and underground drainage is the worst treatment. Surface drainage with a distance of 5 and 10 meters compared to the control increases grain yield by 31.5 and 23.8 percent. Underground drainage with a distance of 15, 10 and 7.5 meters compared to the control increases grain yield by 54.8, 87.3 and 100.5%, respectively.

       Keywords: surface drainage, underground drainage, beans, second crop. This issue shows its importance in societies that are in need of essential animal protein. Due to their ability to coexist with molecular nitrogen-fixing bacteria, legumes are important in establishing the balance of soil mineral elements in agricultural ecosystems and reducing the population of weeds and increasing the quality of soil fertility (Khosravi 2013). Bean plant is one of the oldest agricultural plants, the cultivation of which is considered due to its protein richness, creating diversity in agricultural systems and increasing the price of animal feed. Compared to other crops, these plants need less nitrogen input, and the nitrogen due to the activity of their roots with rhizobium is also available to the next crops.In Iran, for a long time, the production of legumes has been considered as the second source of food for the society after cereals. The cultivated area of ??broad beans in Iran is about 35,000 hectares, and Golestan province is the largest producer of broad beans in Iran, with more than 35% of the cultivated area of ??the country, with a yield of 10,308 kg/ha of green pods in wet conditions and 8,385 kg/ha in dry conditions. The Barkat variety of beans was introduced in Gorgan in 1365, and with the introduction of this variety, the yield per unit area of ??beans increased up to two times, and the farmers of the region welcomed this variety. Due to its high yield, large grain, quick ripening and marketability, this variety is considered the dominant variety in the region (Sabbaghpour 2013). In order to maintain sustainable agriculture, increase production, create employment, increase the financial capacity of farmers, comply with crop rotation and thus preserve the environment, planning and managing the second crop, especially in the rice fields of the north of the country, has a high priority. One of the problems of the lack of development of the cultivated area of ??beans in the paddy fields of Gilan province is the heavy soil and the flooding of the fields due to heavy rains, especially at the beginning of growth. The construction of underground and surface drains is one of the effective solutions to prevent the flooding of fields and as a result the development of bean cultivation in the region. Due to the lack of research on the effect of surface and underground drains on bean yield, this project was designed and implemented in order to determine the best underground and surface drains on the yield and yield components of bean plant in the paddy fields of the province. Research:

    1- Drainage is effective on the performance of beans as a second crop in paddy fields.

    2- The type of drainage (surface or underground) and their distance is effective on the performance and performance of beans.

    The purpose of this research:

    1- Examining the effect of drainage and its type (surface and underground) on the performance and yield components of beans.

    2- Determination of the most suitable distance of surface and underground drainage for the second cultivation of beans in paddy fields with heavy texture

    Since there are very limited studies in the field of drainage and Its type (surface and underground), the distance and depth of the drains are based on the performance of the plants. Conducting this research can create a new trend in the field of drainage discussion on the valuable plant of broad beans as a second crop in the paddy fields of Gilan province. Considering that such a research has not been done so far, it is considered as a new and innovative research in this field.

    1-1- Objectives and effects of agricultural drainage

    Generally, the purpose of drainage as a part of agricultural water management is to increase crop growth and maintain soil fertility.  The main objectives of agricultural drainage are (Figure (1-1)):

    Removal of excess underground and surface water

    Removal of dissolved salts along with (extra) water from the soil profile

    Maintaining the level of underground water at a suitable level

     

    Abstract

    In Guilan province, there are rice fields measuring approximately 238,000 acres. In order to maintain sustainable agriculture, production improvement, job creation, increase of financial power of farmers, compliance with crop rotation and consequently the environmental protection, issues such as planning and management of the second crop, especially in rice fields of the north of Iran have high priority. One of the problems of the lack of development in beans under cultivation in Guilan rice fields is the heavy soil and water logging farms, due to heavy rainfalls, especially at the beginning of the growth.

  • Contents & References of Investigating the effect of drainage on bean yield and yield components

    List:

    1- Introduction. 3

    1-1- Objectives and effects of agricultural drainage. 4

    1-2-need for drainage. 6

    1-3-types of drainage methods. 7

    1-3-1-drainage by well 8

    1-3-2-drainage by the mole method. 8

    1-3-3-open drainage network 9

    1-3-4-pipe drainage network. 9

    1-4-drainage in paddy fields. 11

    5-1 Drainage needs of paddy fields. 12

    1-5-1- Paddy field drainage in the middle of the rice growing season. 12

    1-5-2- Drainage during harvesting. 13

    1-5-3- Drainage of paddy fields and development of second cultivation. 13

    2- review sources. 15

    2-1 Review of sources on underground drainage. 15

    2-1-1-drainage history. 15

    2-1-2- Drainage situation in the world. 16

    2-1-3- Drainage situation in Iran. 19

    2-2- Review of past studies: 21

    3- Materials and methods 32

    3-1 Placement of underground drainage pipes in the ground. 32

    3-2- observation wells. 33

    3-3 planting operation. 33

    3-4 Measurement of traits: 36

    4- Data analysis 40

    4-1 The effect of drainage on the weight of one hundred seeds. 42

    4-2 The effect of drainage on harvest index. 42

    4-3 The effect of drainage on seed yield. 43

    4-4 The effect of drainage on the yield of green pods 44

    4-5 The effect of drainage on biological performance: 46

    4-6 The effect of drainage on the number of seeds per plant. 47

    4-7 The effect of drainage on the number of seeds in a pod: 49

    4-8 The effect of drainage on the number of pods per plant. 50

    4-9 The effect of drainage on plant height. 52

    4-10 Drainage effect on pod length. 52

    4-11 The effect of drainage on the number of branches. 54

    4-12 The effect of drainage on surface soil moisture. 55

    Conclusion: 58

    Suggestions: 60

    List of references. 62

    Source:

    List of sources

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Investigating the effect of drainage on bean yield and yield components