Soybean irrigation requirements and canopy-atmosphere coupling in Southern Brazil

Silva, Evandro H.F.M. da; Gonçalves, Alexandre Ortega; Pereira, Rodolfo A. A.; Júnior, Izael Martins Fattori; Sobenko, Luiz Ricardo; Marin, Fábio Ricardo

doi:10.1016/j.agwat.2019.03.003

Cited by 25 publications

(14 citation statements)

References 23 publications

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“…In Table 1, it can be seen that the provision of water every 10 days has a groundwater content in the vicinity and even slightly exceeds the groundwater content in the field capacity conditions of 43.49 to 46.97%, even though the amount of water given is the same as a whole, but this is the time of giving it which distinguishes the results, where by giving every 10 days and 15 Alfisol-type soil that is used as a growing medium has a light texture so that at the time of administration every 10 days or every 15 days the moisture content of the soil is around field capacity, even above field capacity. This is in accordance with the opinion [9], which states that the important factors underlying water management are the properties of plants to water needs, the amount of water supplied, the time of water and how to irrigation and the characteristics of the soil in storing water.…”

Section: Resultssupporting

confidence: 89%

Response to the Growth and Production of Soybeans (Glycine max L) to the Time of Giving Irrigated Water to Maintaining Soil Moisture

Aminah¹,

Khan²,

Nuraeni³

et al. 2021

Advances in Social Science, Education and Humanities Research

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This study aims to determine the response of growth and production of soybean (Glycine max L) on the time of offering irrigation water in maintaining soil moisture. Research in the form of an experiment using a randomized block design (RAK) consisted of four times of air giving, namely W1 = every 15 days of age, W2 = at full flowering, W3 = at the age of 15 days and at full flowering, W4 = every 10 days. The amount of air given is the same for each treatment, only the time to offer it is different, where the water requirement for soybean plants is obtained from previous research data where it was found that the water requirement for soybean crops was 6.1 liters per plant during its life cycle, the number of plants in one bed was 75 so that The total air needed in one bed until production is 457.5 liters = 458 liters. W1 = every 15 days of age (5 times to offer) = 458/5 = 91.6 = 92 liters, W2 = at full flowering (1 time to offer) = 458 liters, W3 = at the age of 15 days and when it is full (2 times giving) = 458/2 = 229 liters and W4 = every 10 days (8 times of giving) 458/8 = 57.25 = 57 liters. The results of the investigation showed that offering every 10 days showed the highest water content (soil moisture) compared to other treatments, but the highest moisture content was not in line with the increase in the production component. The treatment of giving water every 15 days and offering water while giving full warning of the best effect on almost all production components, namely the number of seeds planted (161.99), weight 100 seeds (27.5 grams), number of pods (80.67), the weight of seeds per plant (23.83 grams), and production per hectare (3.2 tons/hectare). This shows that the time to offer water at the age of 15 days and when it is in full bloom with the amount of giving 229 liters of water each time (twice) is able to meet the optimal water needs of the growth phase and development even to the production of soybean plants.

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Section: Resultssupporting

confidence: 89%

Response to the Growth and Production of Soybeans (Glycine max L) to the Time of Giving Irrigated Water to Maintaining Soil Moisture

Aminah¹,

Khan²,

Nuraeni³

et al. 2021

Advances in Social Science, Education and Humanities Research

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“…ese factors are also influenced by local agroecological conditions such as climate, soil type, and irrigation water availability. Lack of information on crop water needs in tropical conditions is one of the causes of inefficient water use and inadequate irrigation management [2].…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Water Management towards Soil Moisture Preservation on Soybeans

Aminah

Abdullah

Nuraeni

et al. 2020

International Journal of Agronomy

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In this study, factorial randomized experiments were conducted in a controlled greenhouse environment to investigate an efficient and effective component of water management technology in increasing soybean yield. The soybeans were planted in polybags with 6 kg of Alfisol soil media and fertilizer. The bags were perforated with 16 holes at approximately 1 to 2 cm from the base and put into a water container. The container was immersed in water levels of 5 cm and 10 cm. The application of these immersions was carried out in four stages: 0 to 15 days after planting (DAP), 15 to 30 DAP, 30 to 45 DAP, and continued until harvest. Observations of growth were carried out on the greenness of leaves, plant height, leaf area, root length, and dry weight of plants, and soil water content was checked every two weeks. The yield measured after harvest consisted of the number of pods, the number of seeds/plants, weight of 100 seeds, and weight of seeds per plants. The water level had a significant effect on plant height, dry weight, leaf greenness, number of pods, and number of seeds/plants. The immersion stage has significant effects on plant height, harvest age, dry weight, leaf greenness, number of pods, and number of seeds/plants. Continuous immersion in a water level of 5 cm has shown the best yield on number of pods (20.81) and number of seeds per plant (162.94). This treatment increased seed yield (seed weight) approximately by 19.23% compared to the field capacity.

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“…In the final third of the experimental cycle, Kc's mean values for C. diffusa, C. rotundus, and C. dactylon were 1.32, 0.93, and 0.90, respectively. It can be noted that the Kc value for C. diffusa is higher than the Kc found in the phase of highest water demand of many crops, such as corn (1.20), soybean (1.27), coffee (1.10), and citrus (0.85); for coffee and citrus, this Kc value is already for crops with the presence of weeds (Allen et al, 1998;Segovia-Cardoso et al, 2019;Silva et al, 2019). In the lysimeters cultivated with P. notatum, as expected, the ratio between ET W and the ETo estimated by the Penman-Monteith model remained almost equal to the unit (0.9916) throughout the experimental cycle.…”

Section: Et W /Eto Ratio (Crop Coefficient)mentioning

confidence: 98%

Water use of different weed species using lysimeter and NDVI

Rodrigues¹,

Cunha²,

Silva³

et al. 2021

Advances in Weed Science

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This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are credited. IntroductionWeeds compete with agronomic crops for water, light, and nutrients, significantly affecting agricultural yields (Fialho et al., 2012;Swanton et al., 2015). According to Cirujeda et al. (2012), the infestation of Cyperus rotundus in tomato plantation was responsible for a 64% reduction in yield compared to the area without interference from this weed. Besides the competition for resources, weeds can cause other types of damage, such as the damage to mechanized harvesting, allelopathic effects, pest and disease hosting, changes in the secondary metabolism of crops, among others (Rockenbach et al., 2018). Given this scenario, it is evident that a greater understanding of the interactions between crops and weeds is of fundamental importance for developing more efficient and sustainable agriculture.Among the various existing species of weeds, Cyperus rotundus, Commelina diffusa, and Cynodon dactylon stand out because they are difficult to control and have an intense competition and dissemination capacity. According to Das ( 2008), Cyperus rotundus is present in the world's tropical and subtropical regions, interfering in 52 crops in 92 countries. Commelina diffusa, on the other hand, for being tolerant to the herbicide glyphosate, has become a major problem with the advent of the transgenic technology Roundup Ready (RR) in different crops (Opeña et al., 2014). Cynodon dactylon, according to Johnson and Davis (2012), causes significant economic damage in organic plantations due to its high capacity to reproduce by rhizomes, stolons, and seeds, combined with the absence of efficient control compatible with organic production standards.Several studies demonstrate that weeds have greater development than agronomic crops in environments with limited resources (Berger et al., 2010;Opeña et al., 2014;Swanton et al., 2015). This occurs because, along with the genetic improvement of cultivated plants, the yield and quality of fruits were valued to the detriment of rusticity and edaphoclimatic adaptation (Bai et al., 2018). On the other hand, most spontaneous plants evolved through natural selection, developing several resistance mechanisms to adverse conditions in the environment, especially to water deficit in soil.Water is vital for several physiological processes in plants, such as respiration, photosynthesis, cell division, absorption, and transport of nutrients, among others (Berger et al., 2010). However, the dispute with other sectors for this resource has increased every day due to climate changes combined with poor management of its Abstract: Background: Weeds reduce water use efficiency in crops due to water used by the weed and to the reduction in crop yield. In addition to the usual presence of weeds in the interrow of different crops, the management of these plants ...

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Soybean irrigation requirements and canopy-atmosphere coupling in Southern Brazil

Cited by 25 publications

References 23 publications

Response to the Growth and Production of Soybeans (Glycine max L) to the Time of Giving Irrigated Water to Maintaining Soil Moisture

Response to the Growth and Production of Soybeans (Glycine max L) to the Time of Giving Irrigated Water to Maintaining Soil Moisture

Effectiveness of Water Management towards Soil Moisture Preservation on Soybeans

Water use of different weed species using lysimeter and NDVI

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