scholarly journals The Impact of Bio-Organic and N, P, K Fertilizers on the Growth and Yield of Potato

2021 ◽  
Author(s):  
Duraid K.A. AL-Taey ◽  
Rusul F. AL-Shmary

Bio-organic agriculture considers the medium- and long-term impact of agricultural interferences on the agro-ecosystem. It aims to produce food while setting an ecological balance to soil fertility. Bio-organic agriculture takes a proactive design as opposed to treating problems after they emerge, so the study was conducted for studying two factors: First: the cultivars (Riviera and Arizona) class A resulting from cultivation of class E imported and cultivated in spring season 2018. The second factor: fertilizer combinations (bio-organic fertilizers compared with traditional chemical fertilizers). Arizona cultivar significantly achieved the highest values, in most of the study parameters compared to Rivera cultivar. Significant differences were observed between the treatments of fertilizer combinations, the treatment (organic fertilizer + bio-fertilizer + 25% chemical fertilizer) significantly achieved the best values compared to the control. Bi-interaction treatment (Arizona cultivar + organic fertilizer + bio-fertilizer + chemical fertilizer 25%) achieved the highest yield per hectare (43.24 tons.ha−1).

2021 ◽  
Vol 905 (1) ◽  
pp. 012038
Author(s):  
Supriyono ◽  
J R Zakiyyah ◽  
T D Sulistyo ◽  
B Pujiasmanto

Abstract The study aimed to obtain partial or complete replacement of N in ZA fertilizers with organic fertilizers without reducing, and even increasing yields in the context of sustainable agriculture in mixed crops with maize and cassava. The research was held in Wonorejo Village, Karanganyar, Indonesia in March-August 2020. The research was using one factor RCBD, four treatments, six replications, namely Control, 100% ZA, 50% ZA + 50% organic fertilizer, and 100% organic fertilizer. Data analysis using ANOVA and DMRT 5%. The result showed that 100% organic fertilizer influenced significantly on plant height, number of leaves and tillers, fresh and dry straw weight, stored rhizomes weight, dry weight of maize kernels and cassava tubers. Mixed crops are more efficient in land use than monoculture crops (LER > 1), but not in time used from planting to harvest (ATER < 1). Subsistence farmers are suitable to apply mixed crops because it is more profitable in terms of food needs fulfillment.


2019 ◽  
Vol 11 (12) ◽  
pp. 3251 ◽  
Author(s):  
Ladislav Holík ◽  
Lukáš Hlisnikovský ◽  
Roman Honzík ◽  
Josef Trögl ◽  
Hana Burdová ◽  
...  

Fertilization is a key factor for sustaining productivity in agroecosystems. A long-term experiment in cambisol following periodical application of several types of fertilization has been running at the experimental site since 1954. In this study, we determined the impact of applied inorganic and/or organic fertilizers on the activity of soil enzymes and on the structure of microorganisms at depths of 0–30 cm and 30–60 cm. Single-factor comparison showed that use of inorganic and/or organic fertilizer had an insignificant effect on the activities of soil enzymes (at depths 0–30 cm and 30–60 cm) and also on the structure of microbial communities at both depths studied. Only soil respirations exhibited stimulation by combined fertilization. The results, irrespective of sampling depth (0–60 cm), showed that application of combined organic and inorganic fertilization stimulated the activity of glucosidases and use of inorganic fertilizer inhibited the activity of arylsulphatases. Respirations were stimulated by application of organic fertilizer and combined fertilization. Nevertheless, principal component analyses, which calculate with multidimensional data, revealed differences in samples treated by sole mineral fertilizer compared to other variants, especially in the lower layer. In general, our results indicate that use of combined fertilization may improve biological characteristics in deeper parts of soil profile and possibly increase biological activity in agroecosystems.


2020 ◽  
Vol 12 (8) ◽  
pp. 152
Author(s):  
K. Sungthongwises ◽  
Anucha Laoken ◽  
Anan Polthanee

To investigate the effect of chemical and organic fertilizer management on growth, yield and nutrient uptake of two cassava cultivars under rainfed conditions, the study was laid out in factorial in randomised complete block design with four replications. The six treatments were TR1) Kasetsart 50 with 312.50 kg ha-1 of 15-15-15, TR2) CMR 33-38-48 with 312.50 kg ha-1 of 15-15-15, TR3) Kasetsart 50 with 312.50 kg ha-1 of 15-7-18, TR4) CMR 33-38-48 with 312.50 kg ha-1 of 15-7-18, TR5) Kasetsart 50 with 6,250 kg ha-1 of organic fertilizer and TR6) CMR 33-38-48 with 6,250 kg ha-1 of organic fertilizer. The results illustrated that Kasetsart 50 responded to chemical fertilizer management especially, 312.50 kg ha-1 of 15-7-18 formula and 6,250 kg ha-1 of organic fertilizer at 1 and 4 months after planting respectively, better than CMR 33-38-48 in terms of storage root fresh and dry weights, percentage of total starch and amylose content. CMR 33-38-48 responds to chemical fertilizer management and organic fertilizers in terms of stem and leaf growth.


2016 ◽  
Vol 47 (1) ◽  
Author(s):  
Almrani & et al.

A field experiment was carried out at the Experimental Field of Hort. Dept/ College of  Agric .Abu-Ghraib/University of Baghdad during the  spring growth season and autumn of 2013, to study  effect organic fertilizer and magnetized water  on Growth and production of medicinal pumpkin from fixed oil and its components, the experiment included two factors, First was irrigation with normal water(A1), irrigation with magnetized water 500 gauss(A2) and the second factor included six levels of fertilizers are: control (without fertilization) (F1), chemical fertilization (Recommended) (F2) ,fertilization with mushrooms waste 5%(F3), 7.5% (F4), fertilization with poultry manure 5% (F5), 7.5% (F6). The experiment was implemented within Nested design and three replications for spring season (open field) and autumn season (green house). The results showed that the significant increase in plant height at treatments F6 and F4 with A2 in the open field and with A1 in green house (365.1, 312.3, 597.9, 504.9 cm respectively). Reached   highest number of branches and dry weight at treatment F6 with A2, leaf area with A1 of  open field, (3.2 branch .plant-1 , 113 dsm2 152.1 g respectively) and the highest increase in the leaf area and dry weight at treatment F4 with A1 of  green house (498.5 dsm2 , 273.5 g respectively). Highest yield of  the fruits was at treatment F2 with A1 and F6 with A2  in open field(40.0, 33.5 ton .h-1 respectively) and treatment F5 with A1in green house (29.7 ton .h-1). Happened  highest yield of seeds at treatment F6 and F4 with A1  in open field(240.4, 231.8 kg .h-1 respectively) and at treatment  F2 with A1 in green house (401.2 kg .h-1) also a higher yield of oil at  F4 and F6 with A1  in open field(58.1, 55.8 kg.h-1 respectively) and  at treatments F5, F4 with A1 in green house (142.1, 139.7 kg.h-1 respectively) Reached highest percentage of oleic  acid at F1 with A2  in green house (17.0%) while reached  higher percentage of linoleic acid at treatment F4 , F2 with A1 (68.3, 68.1% respectively) and the higher percentage of phytosterols at treatments F3 with A2 in open field (1.9%) and the treatment of F1 with A2 in green house (2.3%). 


Jurnal Agrium ◽  
2017 ◽  
Vol 14 (2) ◽  
pp. 37
Author(s):  
Muhammad Yusuf N ◽  
Muhamad Yusuf

This study aims to find out organic fertilizers and crops and lettuce products. The study was conducted in Blang Dalam Village Geunteng Nisam District, North Aceh District, from September to November 2017 with a height of  6 meters above sea level. This research will use Randomized Block Design (RAK) Factorial pattern. There are two factors studied, namely:  Liquid organic fertilizer (C) consists of 4 levels, namely: C0 = control (without fertilizer), C1 = application of liquid organic fertilizer 4 cc / liter of water,   C2 = application of liquid organic fertilizer 8 cc / liter of water, C3 = application of liquid organic fertilizer 12 cc / liter of water. Lettuce varieties (V) consists of 3 levels, namely:  V1 = Grand Rapids Varieties,  V2 = Lettuce Varieties,  V3 = Red Coral Varieties. Thus there were 12 treatment combinations with 3 replications, so there were 36 experimental units.  Based on the results of the study showed that: application of liquid organic fertilizer gives a very different effect on growth and yield of lettuce plants and there is a very real interaction


2021 ◽  
Vol 19 (1) ◽  
pp. 103-112
Author(s):  
S Bhujel ◽  
C Pant ◽  
S Sapkota

An experiment was conducted to evaluate the yield performance of potato varieties with chemical and organic fertilizer at Chilime, Rasuwa. The experiment consisted of eight treatment combinations laid out in two factors Randomized Complete Block Design (RCBD) with three replications. Four potato varieties (Khumal-Seto-1, Khumal-Ujjwal, Janak-Dev and Kufri-Jyoti) with fertilizer (Recommended dose of chemical fertilizer (100:100:60 NPK kg ha-1) and organic farmyard manure (15 mt ha-1) were used to make eight treatment combinations. The results showed that Janak-Dev had the highest plant height (69.3 cm) and canopy diameter (60.92 cm). Khumal-Seto-1 had highest number of main stems per hill (3.75) which were statistically similar to Kufri-Jyoti (3.42) and Khumal-Ujjwal (3.25). Janak-Dev had the lowest number of main stems per hill (1.87). The effect of fertilizer was nonsignificant. Flowering occurred earlier in Janak-Dev at 61.17 days after sowing while Kufri-Jyoti flowered after 73.17 days after sowing. The highest number of tubers were found in Khumal-Seto-1 (9.167) and lowest in Janak-Dev (5.750). Number of tubers per plant was not affected by types of fertilizers used. Maximum weight of each tuber (107.7 grams), yield per plant (780 grams) and yield per hectare (37.1 mt ha-1) were obtained from Kufri-Jyoti. These parameters were the highest from chemical fertilizer application. This field experiment showed that Kufri-Jyoti with recommended dose of chemical fertilizer was appropriate to get optimum yield under Chilime condition. SAARC J. Agric., 19(1): 103-112 (2021)


Coronaviruses ◽  
2020 ◽  
Vol 01 ◽  
Author(s):  
Yam Nath Paudel ◽  
Efthalia Angelopoulou ◽  
Bhupendra Raj Giri ◽  
Christina Piperi ◽  
Iekhsan Othman ◽  
...  

: COVID-19 has emerged as a devastating pandemic of the century that the current generations have ever experienced. The COVID-19 pandemic has infected more than 12 million people around the globe and 0.5 million people have succumbed to death. Due to the lack of effective vaccines against the COVID-19, several nations throughout the globe has imposed a lock-down as a preventive measure to lower the spread of COVID-19 infection. As a result of lock-down most of the universities and research institutes has witnessed a long pause in basic science research ever. Much has been talked about the long-term impact of COVID-19 in economy, tourism, public health, small and large-scale business of several kind. However, the long-term implication of these research lab shutdown and its impact in the basic science research has not been much focused. Herein, we provide a perspective that portrays a common problem of all the basic science researchers throughout the globe and its long-term consequences.


2021 ◽  
pp. 089443932098413
Author(s):  
Carina Cornesse ◽  
Ines Schaurer

While online panels offer numerous advantages, they are often criticized for excluding the offline population. Therefore, some probability-based online panels have developed offline population inclusion strategies. Two dominant approaches prevail: providing internet equipment and offering an alternative survey participation mode. We investigate the impact of these approaches on two probability-based online panels in Germany: the German Internet Panel, which provides members of the offline population with internet equipment, and the GESIS Panel, which offers members of the offline population to participate via postal mail surveys. In addition, we explore the impact of offering an alternative mode only to non-internet users versus also offering the alternative mode to internet users who are unwilling to provide survey data online. Albeit lower recruitment and/or panel wave participation probabilities among offliners than onliners, we find that including the offline population has a positive long-term impact on sample accuracy in both panels. In the GESIS Panel, the positive impact is particularly strong when offering the alternative participation mode to non-internet users and internet users who are unwilling to provide survey data online.


2020 ◽  
Vol 20 (3) ◽  
pp. 317-351
Author(s):  
Scott Desposato ◽  
Gang Wang

AbstractDemocracy movements in authoritarian regimes usually fail and are repressed, but they may still affect attitudes and norms of participants and bystanders. We exploit several features of a student movement to test for enduring effects of social movements on democratic attitudes. College students were the core of the movement and had wide exposure to the ideas and activities of the movement, as well as the suppression of the movement. College-bound high school students had limited exposure to the movement and its activities. Time of college entry could in theory be manipulated and endogenous, so we also use birthdate as an exogenous instrument for enrollment year. Applying a fuzzy regression discontinuity, we test for the impact of exposure to the movement on long-term attitudes. We find significant attitudinal differences between those in college during the movement, and those who started college post-movement. These results are strongest for alumni of the four universities that were most connected to the movement.


2021 ◽  
pp. 003329412110051
Author(s):  
Rashmi Gupta ◽  
Jemima Jacob ◽  
Gaurav Bansal

Psychosocial stressors and social disadvantages contribute to inequalities in opportunities and outcomes. In the current paper, we use an epidemiological perspective and highlight the role stress plays on individuals by reviewing the outcomes of major stressors such as poverty and unemployment. We further analyzed the psychological and physical cost of these stressors and their long-term impact. We examined the role of universal basic income and closely looked at income experiments that were implemented in the past, in terms of their effectiveness in enhancing the community as well as individual outcomes and propose the UBI as a tool for alleviating the impact of these stressors. At a time when a major pandemic (e.g., COVID-19) threatens economic stability and health globally, we believe the UBI is relevant now, more than ever.


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