scholarly journals The influence of organic and mineral fertilization on nutrient status, nitrate accumulation, and yield of head chicory

2011 ◽  
Vol 49 (No. 5) ◽  
pp. 218-222 ◽  
Author(s):  
M. Ćustić ◽  
M. Poljak ◽  
L. Čoga ◽  
T. Ćosić ◽  
N. Toth ◽  
...  
Keyword(s):  
Latin Square ◽  
Mineral Fertilizer ◽  
Weather Conditions ◽  
Nutrient Status ◽  
Leafy Vegetables ◽  
Nitrogen And Phosphorus ◽  
Mineral Fertilization ◽  
Nitrate Accumulation ◽  
Plant Nitrogen ◽  
Set Up

The influence of different fertilizer forms and rates on nitrogen, phosphorus and potassium contents, nitrate accumulation and yield in red head chicory (Cichorium intybus var. foliosum L.) was investigated. Field fertilization trials were set up at two localities inNorthwest Croatia in 1999 and 2000. Trials were laid out according to the Latin square scheme in five fertilization treatments: manure 5 kg/m2, three rates of complex mineral fertilizer NPK (5:20:30) – 50, 100 and 150 g/m2, and an unfertilized control variant. The results of investigations indicate that there were no significant differences between treatments in the plant nitrogen and phosphorus contents. Significant fluctuations of the chicory potassium content (3.27–4.75% K) depending on the fertilization variant were recorded only in 1999 while in 2000 all values (4.13–5.12% K) were uniform. Plant nitrate levels were influenced by weather conditions more significantly than by the form and rates of fertilizers. All the recorded values are within the limits tolerated for leafy vegetables. Comparing the trial years, yields were generally higher in 1999 (1.58–4.95 kg/m2) than in 2000 (0.40–2.70 kg/m2). No significant differences in yield were recorded between the application of stable manure and the lowest mineral fertilizer rate.

scholarly journals Nitrogen and Crude Proteins in Beetroot (Beta vulgaris var. conditiva) under Different Fertilization Treatments

2012 ◽  
Vol 40 (2) ◽  
pp. 215 ◽  
Author(s):  
Marko PETEK ◽  
Mirjana HERAK CUSTIC ◽  
Nina TOTH ◽  
Sanja SLUNJSKI ◽  
Lepomir COGA ◽  
...  
Keyword(s):  
Protein Content ◽  
Beta Vulgaris ◽  
Crude Protein ◽  
Latin Square ◽  
Storage Period ◽  
Dry Weight ◽  
Fresh Weight ◽  
Mineral Fertilization ◽  
Stable Manure ◽  
Set Up

The research aim was to determine the influence of different organic and mineral fertilization treatments and post-harvest treatments on the content of nitrogen and crude proteins in the edible part of beetroot (Beta vulgaris var. conditiva). A field trial (2003-2005) was set up in a hilly part of Croatia according to the Latin square method with four types of fertilization (control, 50 t ha-1 stable manure, 500 and 1000 kg ha-1 NPK 5-20-30), while treatments involved harvested fresh beetroot and stored fresh beetroot. The highest dry weight (DW) content was determined in climatologically favourable 2004 (average 14.8% DW) and in the treatment with 1000 kg ha-1 NPK 5-20-30 (15.6% DW) in harvested beetroot. In 2004 and 2005, the highest levels of nitrogen and crude proteins in harvested beetroot were determined in the treatment with 1000 kg ha-1 NPK 5-20-30 (2.41 and 2.43 g N kg-1 in fresh weight and 15.07 and 15.21 g crude proteins kg-1 in fresh weight, respectively). Regardless of fertilization treatment or studied year, nitrogen and crude protein contents were higher in stored than in harvested beetroot, by 12% on average. The lowest crude protein content was determined in treatment with stable manure what confirmed that protein content decreased by organic fertilization. It can be concluded that beetroot lost some water during the storage period, which increased its content of nitrogen and crude proteins in fresh weight and thus increased the nutritional quality of beetroot as a functional food.

scholarly journals REPONSE A LA FERTILISATION ORGANIQUE ET MINERALE DE DEUX VARIETES DE GOMBO (ABELMOSCHUS ESCULENTUS (L) MOENCH, MALVACEA) A DALOA, COTE DIVOIRE

2021 ◽  
Vol 9 (06) ◽  
pp. 51-60
Author(s):  
Kouame NGuessan ◽  
◽  
Beugre Manehonon Martine ◽  
Kouassi NDri Jacob ◽  
Yatty Kouadio Justin ◽  
...  
Keyword(s):  
Organic Fertilizer ◽  
Mineral Fertilizer ◽  
Chicken Manure ◽  
Abelmoschus Esculentus ◽  
Mineral Fertilization ◽  
En Bloc ◽  
Local Variety ◽  
Set Up

This study aims to assess the effect of variety and organic and mineral fertilization on the agronomic parameters of okra. The experimental set-up used was a completely randomized en bloc device. The treatments used are : T0 (controls without amendment), T1 (10 t / ha of chicken manure), T2 (10 t / ha of sawdust, T3 (2.5 t / ha of NPK 15-15 fertilizer) -13). The two varieties compared are the improved variety called Clemson spineless and the local variety Koto or Soudais or gombo Baoule. The results obtained showed significant differences between the two varieties as well as differences between the fertilizers used at (p> 0.05). Organic fertilizer made from chicken manure yielded the best results followed by mineral fertilizer and finally sawdust.

FERTILIZATION SYSTEM AS A WAY OF SOIL FERTILITY AND STABILIZATION OF FIELD CROP ROTATION PRODUCTIVENESS

1970 ◽  
pp. 38-41
Author(s):  
V. T. Sinegovskaya ◽  
E. T. Naumchenko
Keyword(s):  
Soil Fertility ◽  
Crop Rotation ◽  
C:N Ratio ◽  
Mineral Fertilizer ◽  
Organic Fertilizers ◽  
Nitrogen And Phosphorus ◽  
Rotation System ◽  
Mobile Phosphorus ◽  
Crop Rotation System ◽  
Fertilizer System

The article presents the results of comparative evaluation of the efficiency of the long-term application of mineral and organic fertilizers in the crop rotation system. It was found that the application of the mineral fertilizer system increased the value of hydrolytic acidity of the soil from 4,30 to 5,29 mg-eq per 100 g of soil, the indicator of metabolic acidity decreased from 5,2 to 4,9 pH units. By the end of the 11th rotation for both fertilizer systems, the content of mobile phosphorus increased by more than 4 times relative to the initial value, its mobility indicator – by 2,2-3,2 times compared with the control. The use of the organo-mineral system was accompanied by an increase in the content of humus by 0,35 % and a decrease in the C:N ratio from 11,2 to 8,9. The increased productivity of wheat was revealed when applying nitrogen and nitrogen-phosphorus fertilizers against the background of prolonged use of the mineral and organo-mineral fertilizer system. The change in wheat productivity by 56 % depended on the content of mineral nitrogen, mobile phosphorus, humus in the topsoil, and on the phosphate ion mobility. Soybean productivity depended on soil fertility indicators only by 24 %: the relationship between soybean productivity and the mineral forms of nitrogen and phosphorus is weak and direct, between productivity and P2O5 mobility - weak and inverse, with humus - moderate and direct.

scholarly journals Prediction of Pest Insect Appearance Using Sensors and Machine Learning

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4846
Author(s):  
Dušan Marković ◽  
Dejan Vujičić ◽  
Snežana Tanasković ◽  
Borislav Đorđević ◽  
Siniša Ranđić ◽  
...  
Keyword(s):  
Machine Learning ◽  
Relative Humidity ◽  
Weather Conditions ◽  
Daily Basis ◽  
Machine Learning Algorithms ◽  
Lower Percentage ◽  
Timely Manner ◽  
Proposed Model ◽  
Set Up ◽  
Accuracy Of Prediction

The appearance of pest insects can lead to a loss in yield if farmers do not respond in a timely manner to suppress their spread. Occurrences and numbers of insects can be monitored through insect traps, which include their permanent touring and checking of their condition. Another more efficient way is to set up sensor devices with a camera at the traps that will photograph the traps and forward the images to the Internet, where the pest insect’s appearance will be predicted by image analysis. Weather conditions, temperature and relative humidity are the parameters that affect the appearance of some pests, such as Helicoverpa armigera. This paper presents a model of machine learning that can predict the appearance of insects during a season on a daily basis, taking into account the air temperature and relative humidity. Several machine learning algorithms for classification were applied and their accuracy for the prediction of insect occurrence was presented (up to 76.5%). Since the data used for testing were given in chronological order according to the days when the measurement was performed, the existing model was expanded to take into account the periods of three and five days. The extended method showed better accuracy of prediction and a lower percentage of false detections. In the case of a period of five days, the accuracy of the affected detections was 86.3%, while the percentage of false detections was 11%. The proposed model of machine learning can help farmers to detect the occurrence of pests and save the time and resources needed to check the fields.

scholarly journals SPAD Leaf Greenness Index: Green Mass Yield Indicator of Maize (Zea mays L.), Genetic and Agriculture Practice Relationship

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 830
Author(s):  
Piotr Szulc ◽  
Jan Bocianowski ◽  
Kamila Nowosad ◽  
Waldemar Zielewicz ◽  
Joanna Kobus-Cisowska
Keyword(s):  
Mineral Fertilizer ◽  
Group Method ◽  
Growth Stages ◽  
Arithmetic Means ◽  
Stay Green ◽  
Plant Nitrogen ◽  
Green Mass ◽  
The Impact ◽  
Leaf Greenness ◽  
Greenness Index

The study presents the results of two field studies (Experiment I, Experiment II), whose aim was to assess the impact of agriculture factors on maize green mass and leaf greenness index (Soil and Plant Analysis Development, SPAD) in critical growth stages, as well as to determine the relationship between the SPAD index and the yield of green maize for ensiling. It was shown that thermal and humidity conditions in maize growing seasons determined the value of the SPAD leaf greenness index and the yield of maize harvested for silage. Row application of mineral fertilizer (N, NP) and selection of “stay-green” varieties guarantee a higher yield of maize green mass. Growing maize in direct sowing reduces chlorophyll content expressed in SPAD units, thereby reducing plant nitrogen condition, which significantly decreases the yield of biomass intended for silage. The SPAD leaf greenness index determined in critical stages of maize growth can be considered as a yield predictor of green mass for ensiling. The examined maize cultivars were divided into two groups on the basis of hierarchically grouping using the unweighted pair group method of arithmetic means. The first group comprised cultivars SY Cooky and Drim “stay-green,” while the second one included cultivars ES Paroli “stay-green” and ES Palazzo.

scholarly journals Setting Up a Lab-Scale Pilot Plant to Study the New Growing System (NGS®) for Leafy Vegetable and Culinary Herb Growth

Horticulturae ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 90
Author(s):  
Silvana Nicola ◽  
Giuseppe Pignata ◽  
Manuela Casale ◽  
Saeid Hazrati ◽  
Andrea Ertani
Keyword(s):  
Pilot Plant ◽  
Raw Material ◽  
Leafy Vegetables ◽  
Plant Densities ◽  
Culinary Herbs ◽  
Soilless Cultivation ◽  
Set Up ◽  
High Yields ◽  
Leaf Vegetable ◽  
Nutrient Solutions

New cultural techniques have been developed to improve the yield and raw material quality at harvest, and enhance the postharvest shelf life, by standardizing the growing system. Among the different Soilless Cultivation Systems, the New Growing System (NGS®) is a closed-recirculating system that was designed for open fields and protected cultivations. The aim of this work was to investigate the structural setting of the system and its functioning to harness the full potentiality of NGS®. A lab-scale pilot plant (LSPP) was designed with NGS® technology and the technical aspects have been set up to have a standardized and reproducible growing system. The trials were conducted on growing mature-leaf vegetable species; that is, on both head and multi-leaf vegetables, and on culinary herbs at high plant densities. Positive yield results were found for culinary herbs and leafy vegetables. Mints showed high yields for the two re-growths carried out after the first harvest. The LSPP can also be used in a series of reliable experiments and enable researches to test several species, substrates, hydroponic nutrient solutions, and fertigation scheduling.

scholarly journals Production of cabbage grown in pots containing legumes' root and shoot

Revista CERES ◽  
2012 ◽  
Vol 59 (5) ◽  
pp. 689-694 ◽  
Author(s):  
Thiago de Oliveira Vargas ◽  
Ellen Rúbia Diniz ◽  
Ricardo Henrique Silva Santos ◽  
Alysson Roberto de Almeida ◽  
Segundo Urquiaga ◽  
...  
Keyword(s):  
Block Design ◽  
Mineral Fertilizer ◽  
Dry Weight ◽  
N Fertilization ◽  
Recommended Dose ◽  
Legume Species ◽  
Mineral Fertilization ◽  
Mineral N ◽  
Plant Parts ◽  
Whole Plant

Roots effect is not generally considered in studies assessing the performance of crops in response to green manuring. However, such effect can contribute to a better understanding of crop rotation. The aim of this study was to assess the effect of root and shoot of two legumes on the production of cabbage. The experiment was conducted in pots of 10 liters containing substrate of 2:1 soil/sand. The experiment was arranged in a factorial scheme (2x3 + 2) in a randomized block design with five replicates using two legume species (Crotalaria juncea L. and Canavalia ensiformis L), three plant parts (root, shoot, or whole plant), and two additional treatments (mineral fertilization with 100% and 50% of the recommended dose of N for growing cabbage). Pots with legume treatments received mineral fertilizer with 50% of the recommended dose of N for growing cabbage. The experimental plot consisted of a pot containing one plant of cabbage. Legumes were grown in pots and harvested at 78 days. The root biomass was determined in extra pots. Production was assessed using head fresh and dry weight. The application of the whole plant of both legume species reduced cabbage production. However, root or shoot of both legume species was equivalent to 50% of mineral N fertilization required for the cultivation of cabbage.

scholarly journals Mineral fertilizers as a governing factor of the regulation of the number of fungi in soil

2009 ◽  
pp. 201-207 ◽  
Author(s):  
Marijana Pesakovic ◽  
Dragutin Djukic ◽  
Leka Mandic ◽  
Milan Rakicevic ◽  
Rade Miletic
Keyword(s):  
Soil Fungi ◽  
Mineral Fertilizer ◽  
Mineral Fertilizers ◽  
Nitrogen Rate ◽  
Nutritive Medium ◽  
Governing Factor ◽  
Npk Fertilizer ◽  
Set Up ◽  
The One ◽  
Fertilizer Rates

Over 2003-2005 period, a study was performed on the effect of different rates of NPK fertilizer of formulation 8:16:24 + 3% MgO (N1 - 400 kg ha-1; N2 - 600 kg ha-1; N3 - 800 kg ha-1; N4 - 1000 kg ha-1) on development of the soil fungi. The trial was set up in the experimental plum orchard established by Fruit Research Institute Cacak, and the laboratory of Department of Microbiology, Faculty of Agronomy Cacak. Unfertilized soil was used as the control soil. Each of the stated variants was carried out in three replications. The size of the basic plot was 68 m2. The effect of the studied mineral fertilizer rates was determined three times over the growing season, the number of fungi being checked by the indirect rarefaction method on Chapek nutritive medium. The results of the study inferred that the application of mineral fertilizers brought about the decrease in the number of fungi. Of all studied variants, the one with the highest nitrogen rate (variant N4) exhibited the strongest effect. The influence of the fertilizer was highest at the third sampling. Furthermore, the effect was highest in season 2003.

scholarly journals Meat and bone meal as nitrogen and phosphorus supplier to cereals and oilseed rape

2014 ◽  
Vol 23 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Anna Nogalska ◽  
Lin Chen ◽  
Stanisław Sienkiewicz ◽  
Zenon Nogalski
Keyword(s):  
Oilseed Rape ◽  
Crop Yields ◽  
Field Trials ◽  
Protein Yield ◽  
Meat And Bone Meal ◽  
Bone Meal ◽  
Nitrogen And Phosphorus ◽  
Mineral Fertilization ◽  
Winter Triticale ◽  
North Eastern

The purpose of this study was to evaluate the effect of meat and bone meal (MBM) on cultivation of winter triticale, winter oilseed rape, winter wheat and maize. The average annual yields and protein yield achieved in crop rotation were studied. The field trials were carried out in north-eastern Poland in 2006–2010. The factor was dose of MBM: 1.0, 1.5, 2.0 and 2.5 t ha-1 year-1 or 2.0, 3.0, 4.0 and 5.0 t ha-1 every other year. The four-year experiment has proven that MBM is a valuable nitrogen and phosphorus fertilizer in cultivation of cereals and oilseed rape. By amendment of the tested meal into the soil it produced crop yield and protein yield similar to that achieved by mineral fertilization. However, the crude fat yield of rape was significantly higher under the influence of all the MBM doses. The yield-stimulating effect of MBM did not depend on the frequency of its application; therefore it is more convenient to apply it once every two years. Increasing MBM from 1.5 to 2.5 t ha-1 did not significantly increase any of the four crop yields, therefore for soils that had satisfactory nutrients content, 1 or 1.5 t ha-1 MBM is enough and increasing MBM will only increase economic burden for farmers and environmental risks.

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