Organic fertilizer improves soil fertility and restores the bacterial community after 1,3-dichloropropene fumigation

2020 ◽  
Vol 738 ◽  
pp. 140345
Author(s):  
Hongyan Cheng ◽  
Daqi Zhang ◽  
Bin Huang ◽  
Zhaoxin Song ◽  
Lirui Ren ◽  
...  
Perspektif ◽  
2016 ◽  
Vol 14 (1) ◽  
pp. 61
Author(s):  
Djajadi Djajadi

<p class="Default">ABSTRACT</p><p class="Default">Organik matter has an important role in determining soil health of sugarcane, i.e. soil capacity to support sugarcane to produce sustainable high yield. Soil organic matter influences soil physical, chemical, and biological properties, so that a consequence of declining soil organic matter is poorer soil fertility and lower yield. This paper has an objective to elucidate the important role of organic matter on sustainable farming of sugarcane. The important role of organic matter in soil fertility has been known for a long time before Green Revolution concept was introduced. With more intensity in sugarcane farming and more increasing of sugar demand, application of organic fertilizer started to be substituted by chemical fertilizer. Using green manure and/or biofertilizer has a chance to be spread out to the farmers due to more practical and more efficient than solid organik fertilizer, such as dung manure or compost. Future research should be focusing on the efectivity of green manure and or biofertilzer sources in improving soil fertility and cane yield, minimizing soil pathogen, reducing soil erosion of sugar cane land monoculture, and improving awareness of farmers about soil degradation as consequences of sugarcane monoculture planting for years.</p><p class="Default">Keywords: Organic matter, sugarcane, soil health sustainable farming</p><p class="Default"> </p><p class="Default"><strong>Bahan Organik: Peranannya dalam Budidaya Tebu Berkelanjutan</strong></p><p class="Default">ABSTRAK</p><p class="Default">Bahan organik tanah berperan penting dalam menentukan kesehatan tanah tebu, yaitu kapasitas tanah yang dapat mendukung produksi tebu yang tinggi secara berkelanjutan. Kadar bahan organik tanah mempengaruhi sifat fisik, kimia dan biologi tanah. Paper ini bertujuan untuk menguraikan tentang peranan bahan organik dalam memperbaiki sifat fisik, kimia dan biologi tanah pertanaman tebu. Pentingnya peran bahan oganik tersebut sudah disadari dari dulu, sehingga sebelum revolusi hijau penggunaan pupuk organik sudah umum dilakukan petani. Dengan semakin intensifnya budidaya tebu dan semakin meningkatnya kebutuhan gula, pemanfaatan pupuk organik sudah jarang dilakukan. Diperlukan usaha untuk meningkatkan dan mempertahankan kadar bahan organik pada lahan tebu, antara lain berupa gerakan masal dalam bentuk gerakan nasional melalui program aplikasi bahan organik. Pemanfaatan pupuk hijau dan/atau pupuk hayati berpeluang untuk diterapkan karena lebih praktis dan efisien daripada penambahan pupuk organik padat. Penelitian ke depan perlu difokuskan untuk mengkaji jenis-jenis pupuk organik dan pupuk hayati yang efektif memperbaiki kesuburan, dalam menekan serangan penyakit, meminimalkan erosi pada lahan-lahan tebu monokultur, dan meningkatkan kesadaran petani tebu tentang terjadinya degradasi lahan akibat penanaman tebu yang terus menerus.</p><p class="Default">Kata kunci: Bahan organik, tebu, kesehatan tanah, budidaya berkelanjutan</p><p class="Default"> </p>


2020 ◽  
Vol 36 (4) ◽  
pp. 604-615
Author(s):  
Mohammad Yaghoubi Khanghahi ◽  
Giovanna Cucci ◽  
Giovanni Lacolla ◽  
Loredana Lanzellotti ◽  
Carmine Crecchio

2020 ◽  
Vol 984 ◽  
pp. 153-159
Author(s):  
Xun Zhang ◽  
Jin Long Luo ◽  
Chao Zhang ◽  
Sheng Xiang Chen

To explore the soil fertility and tea quality and yield during the process of replacing chemical fertilizer with organic fertilizer, we established three experiment groups: experimental group I (formulated fertilization and biogas slurry), experimental group II (habitual fertilization) and experimental group III (formulated fertilization). Comparing with soil fertility, quality and heavy metal contents in fresh leaves among three groups in five tea gardens of Mingshan District, explores the effects of three different fertilization treatments on. The results showed that the experimental group I and experimental group III could improve soil fertility (including increasing the organic matter, total nitrogen and alkali-hydrolyzable nitrogen content) compared with the experimental group II. On the Fresh leaf yield, experimental group I> experimental group III > experimental group II(P<0.05), in which experimental group I was 27.26% higher than experimental group III. On yield, different treatments had less effect on the main quality components of fresh leaves (P>0.05).Compared with the experimental group II and the experimental group III, the heavy metal content of the experimental group I was higher, but no more than the food safety standard limit. In summary, experimental group I and experimental group III can effectively improve soil fertility and fresh leaf yield compared with conventional fertilization, particular experimental group I.


Author(s):  
I WAYAN BUDI ARTAWAN ◽  
NI WAYAN SRI ASTITI ◽  
WAYAN SUDARTA

Farmers Knowledge Level in the Use of Organic Fertilizer and Its Applicationin Rice Cultivation (Case in Subak Penarungan, Sub-District of Mengwi,Badung Regency) Public attention to the issue of agriculture and the environment in recent years haveincreased as a result of a big negative impact on the environment, compared with itspositive impact on increasing the productivity of agricultural crops. This encouragesseveral regions to hold organic farming. Organic farming is a natural farming whichin practice trying to avoid the use of chemicals and fertilizers that are poisoning theenvironment with the aim to obtain a healthy environmental condition.This studyaims to determine (1) the level of farmers' knowledge on organic fertilizer; and (3)the application of organic fertilizers by the farmers in the cultivation of lowland rice.The research was conducted at the Subak of Penarungan, Mengwi Sub-District ofBadung Regency. The choice of research location was conducted by purposivesampling. The population of the research was the active members of Subak ofPenarungan totaling of 167 people. The sample size was determined by using theformula of Slovin, so that the number of respondents was 63 people.This researchuse method analysaize descriptive qualitative. The results showed that farmers'knowledge about organic fertilizers can be categorized in the high category withachieving a score of 3.41. However, the application of organic fertilizer by thefarmers is classified in the medium category by achieving a score of 3.05. Based onthe results of this study can be suggested farmers as actors should be more activedoing weeding and want to optimize the use of organic fertilizer as recommended bythe extension. Because the use of sustainable organic fertilizer for the future will givea big influence in soil fertility, quality and not damage the environment.


2008 ◽  
Vol 18 (2) ◽  
pp. 215-226 ◽  
Author(s):  
K. Delate ◽  
C. Cambardella ◽  
A. McKern

With the continuing 20% growth rate in the organic industry, organic vegetable crop production has increased to 98,525 acres in the United States. The requirement for certified organic vegetable producers to implement a soil-building plan has led to the development of soil fertility systems based on combinations of organic fertilizers and cover crops. To determine optimal soil fertility combinations, conventional and organic bell pepper (Capsicum annuum) production was evaluated from 2001 to 2003 in Iowa, comparing combinations of two synthetic fertilizers and three compost-based organic fertilizers, and a cover crop treatment of hairy vetch (Vicia villosa) and rye (Secale cereale) in a strip-tilled or fully incorporated cover crop system. Organic pepper growth and yields equaled or surpassed conventional production when nitrogen (N) was provided at 56 or 112 kg·ha−1 from compost-based organic fertilizer. Soil analysis revealed higher N in plots where cover crops were tilled compared with strip-tilled plots, leading to recommendations for sidedressing N in strip-tilled organic pepper production. Increased incidence of disease was also detected in strip-tilled plots. Postharvest weight loss after 6 weeks in storage was similar in organic and conventional peppers. The addition of calcium and sulfur products in conventional or organic fertilizer regimes did not increase pepper production or postharvest storage potential. Despite application challenges, cover crops will remain as critical components of the organic farm plan for their soil-building benefits, but supplementation with approved N sources may be required for optimal pepper production. Organic growers should conduct their own tests of organic-compliant soil amendments to determine cost effectiveness and value for their site before large-scale application.


Author(s):  
O. O. Korytko

The article summarizes information on the use of peat - a natural substrate in agro-industrial production, maintaining the cleanliness of the soil and maintaining the cleanliness of the environment. Intensive anthropological activity in modern conditions often leads to the deterioration of the ecological situation of the environment, disruption of the interaction between living organisms and the environment. Biological destruction of the ecological system inherent in a given area can occur under the influence of excessive use of agrochemicals, pesticides, microorganisms with altered characteristics due to interaction with infectious agents or parasites, as well as due to changes in the gene pool of living under the influence of genetic engineering. At the present stage in world development, importance is attached to the approximation of agricultural technologies to the natural conditions of operation. Cleaning the environment, preserving and increasing soil fertility, obtaining high-quality and environmentally friendly agricultural products is a vital but at the same time costly process, which involves significant economic costs. Therefore, there is a need to find cheap ways to solve this problem, replace expensive fertilizers with alternative means, the rational use of biological factors that increase the effectiveness of chemicals. For this purpose, biosubstrates, peat, natural fertilizers and preparations are widely used in world, especially organic agriculture, which are created by the method of selection of effective compositions of microorganism strains in order to activate regenerative processes in soils and ensure their potential. Peat is a natural raw material, an important agro-industrial resource with great potential, which has a multifaceted application. The most reactive part of peat is the population of microorganisms. With the participation of symbiotic microorganisms, the mineralization of peat components occurs, as a result of which nutrients become available to plants. The practice of using peat in agriculture shows its effectiveness as an organic fertilizer, peat-based composts increase soil fertility, agricultural productivity in general, improve environmental cleanliness. Peat has long been used in livestock facilities for bedding. Peat litter has advantages over straw litter due to its high absorption and moisture retention capacity, antibiotic properties. Waste litter is used for composting, as a valuable organic fertilizer to improve soil fertility. Peat is an important source of humic substances in the world, so it is used to produce humic preparations.


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