scholarly journals Effect of Activator on Levels of C, N, P and K Compost of Salak Sidimpuan Leaf Midrib

2019 ◽  
Vol 6 (3) ◽  
pp. 342-347
Author(s):  
Rizky Amnah ◽  
Meiliana Friska

Salak Sidimpuan leaf midrib is abundant pruning waste. Salak Sidimpuan leaf midrib can becomposted containing a number of nutrients (carbon, Nitrogen, phosphorus, and potassium) for plantgrowth. To speed up the process of composting of salak leaf midrib can be done by giving a numberof activators. This study aims to see the effect of activator on the level of elements C, N, P and Kcompost of salak Sidimpuan leaf midribs. This study used a one-factor randomized block design with4 levels of treatment of activator, K0 = control, K1 = chopped midribs+cow manure fertilizer, K2 =chopped midribs+EM4, K3 = chopped midribs+cow manure fertilizer+EM4) with three replications.Data were analyzed with ANOVA and continued with DMRT test at 5% level if the F test showed areal effect. The results showed that the K2 with treatment chopped salak Sidimpuan leaf midrib andEM4 activator tended to give the best results in reducing the levels of C-organic and C/N ratio aswell as increasing total Nitrogen, total phosphorus and total potassium after composting comparedto other activator delivery treatments.

2021 ◽  
Vol 17 (2) ◽  
pp. 502-508
Author(s):  
P. Bora ◽  
P. C. Bora ◽  
K. Kurmi ◽  
S. Kalita

A field experiment was conducted during the Rabi seasons of 2016-17 and 2017-18 at Instructional-Cum-Research (ICR) Farm, Assam Agricultural University, Jorhat to study the effect of different levels of primary major nutrients (nitrogen, phosphorus and potassium) as well as secondary nutrient (sulphur) on the uptake of the same by niger and yield of the crop. The experiment was laid out in Factorial Randomized Block Design and replicated thrice. The treatments consisted of three NPK levels viz., F1 (20-10-10 kg N-P2O5-K2O ha-1), F2 (25-12.5-12.5 kg N-P2O5-K2O ha-1), F3 (30-15-15 kg N-P2O5-K2O ha-1) and three sulphur levels viz., S1 (no sulphur), S2 (10 kg S ha-1), S3 (20 kg S ha-1). Application of F3 (30-15-15 kg N-P2O5-K2O ha-1) and S3 (20 kg sulphur ha-1) significantly increased the nitrogen, phosphorus, potassium and sulphur uptake by seed and stover as well as their total uptake by niger as compared to other treatments during both the years of study. Seed yield and protein content (%) of seed of niger were also increased significantly by application of F3 (30-15-15 kg N-P2O5-K2O ha-1) and S3 (20 kg sulphur ha-1) as compared to other treatments during both the years. Interaction effects of NPK (F) and sulphur (S) were found to be significant in respect of seed yield, nitrogen, phosphorus, potassium and sulphur uptake by seed as well as total nitrogen uptake by niger during both the years and phosphorus uptake by niger was found to be significant only in the first year of study.


2020 ◽  
Vol 36 (5) ◽  
Author(s):  
Jéssica Schroder Pacheco ◽  
Cecília Leão Pereira Resende ◽  
Rafael Correia Mendes ◽  
Helton Santos Pereira ◽  
Fabricio Rodrigues

The aim of this investigative study was to identify and categorize new bean cultivars regarding their efficiency and responsiveness to nitrogen, phosphorus, and potassium, both individually and simultaneously, as well as to stipulate the cultivars that would suit each niche market based on this classification. Three experiments were conducted in the field separated by nutrients adopting the randomized block design in a factorial scheme (11 x 4) of 11 cultivars in four doses with three replications. Grain yield was the variable investigated and the means were the basis for the classification separated by in four availabilities: low, partial, adequate dose, and nutritional excess. Genetic variability was observed among the bean cultivars for efficiency and responsiveness (agronomic efficiency) to nitrogen, phosphorus, and potassium. The following cultivars: BRS Agreste, BRS Estilo, BRS Notável, and Pérola revealed the greatest values of efficiency and responsive ratings for nitrogen, phosphorus, and potassium, with indications for low and high technological levels. On the contrary, the cultivars BRS Ametista and BRS Sublime based on the efficiency and non-responsive classification showed a low ability to acquire or utilize the nutrients for grain formation. The BRS Pontal cultivar for all three nutrients displayed a high degree of efficiency with a value exceeding the average under different conditions of stress, suggesting that a more rustic cultivar best suits the market niche of small farmers.


HortScience ◽  
2000 ◽  
Vol 35 (4) ◽  
pp. 554C-554b
Author(s):  
Ahmed A. Al-Badawy ◽  
El-Sayed H. Hussien

In a randomized complete-block design, two separate experiments were conducted to study the response of lead tree Leucaena leucocephala and Hibiscus rosa sinensis to the application of the organic fertilizer, SoilRich. Seedlings of both species were grown in pots filled with growing media containing sandy soil and SoilRich. SoilRich was added at the rates of 0%, 5%, 10%, or 15% (v/v). The obtained results indicated that the application of SoilRich significantly increased plant height, stem elongation, branch number, shoots fresh and dry weights, and enhanced root growth of both Leucaena leucocephala and Hibiscus rosa sinensis. Total nitrogen, phosphorus, and potassium percentages in the shoots were increased in both species as the applied rate of SoilRich was increased. SoilRich treatments increased the water holding capacity of the soil. Moreover, they increased organic matter, total nitrogen, phosphorus, and potassium percentages in the soil. The application of SoilRich at 15% gave the best results.


2016 ◽  
Vol 29 (2) ◽  
pp. 274-282 ◽  
Author(s):  
EDUARDO CASTRO PEREIRA ◽  
JOSÉ MARIA DA COSTA ◽  
FRANCISCO MICKAEL DE MEDEIROS CÂMARA ◽  
WAGNER CÉSAR DE FARIAS ◽  
VANDER MENDONÇA

ABSTRACT: The aim of this study was to evaluate different organic substrates and phosphorus doses on the growth and leaf content of nitrogen, phosphorus and potassium in rootstocks of Tamarindus indica L. The experiment was performed in a greenhouse nursery located on the campus of the Universidade Federal Rural do Semi-Árido (UFERSA), from March to October 2013. The treatments consisted of three organic sources at a concentration of 40% (v/v) (bovine manure, goat manure and a commercial organic compound) and four doses of simple superphosphate (0, 0 kg m-3, 2.5 kg m-3, 5.0 kg m-3 and 7.5 kg m-3). The experiment was conducted in a randomized block design (RBD), with 12 treatments (substrates), four replications and 10 plants per plot, totaling 480 plants. The goat manure and the organic compound were the most suitable treatments for the production of rootstocks of the tamarind tree. The maximum dose of 7.5 g kg-1 of simple superphosphate caused the highest levels of phosphorus and potassium in the dry mass of shoots. The nutrients in the dry matter of shoots accumulated in the following order: N > K > P.


Author(s):  
Raíssa P. D. Gazola ◽  
Salatiér Buzetti ◽  
Rodolfo de N. Gazola ◽  
Regina M. M. de Castilho ◽  
Marcelo C. M. Teixeira Filho ◽  
...  

ABSTRACT Despite maintaining the green color in turfgrasses, nitrogen (N) fertilization affects shoot growth and, consequently, the frequency of cuts, the main factor in the costs of turfgrass maintenance. Therefore, this study aimed to evaluate N fertilization and the use of glyphosate as a growth regulator in Esmeralda grass (Zoysia japonica Steud.). The experiment was conducted in the field, from August 2014 to July 2015, using a randomized block design in a 5 x 4 factorial scheme with four repetitions and 20 treatments, namely: control (without N), 15 g m-2 of N in soil without foliar N; 30 g m-2 of N in soil without foliar N; 15 g m-2 of N in soil with foliar N (1% urea in 200 L ha-1) and 30 g m-2 of N in soil with foliar N combined with glyphosate doses (0, 200, 400 and 600 g ha-1 active ingredient (a.i.)). The N doses were split into five applications along the year. The following variables were evaluated: height, leaf chlorophyll index and foliar accumulation of nitrogen, phosphorus and potassium. Fertilization with 15 g m-2 of N in soil without foliar N application, split into five times along the year, was adequate for the turfgrass, while foliar fertilization did not promote benefits. The glyphosate dose of 400 g ha-1 a.i. was effective in reducing the growth of Esmeralda grass, without compromising its color and promoted less N, P and K accumulation in the leaves, reducing the height and dry matter production.


2020 ◽  
Vol 50 ◽  
Author(s):  
Jaídson Gonçalves da Rocha ◽  
Fábio Cunha Coelho ◽  
Rosana Teixeira Lelis ◽  
Gabriela Carvalho de Souza Santos ◽  
Mario Euclides Pechara da Costa Jaeggi

ABSTRACT In order to meet the need for nutrients or soil cover, when plants are used as green manure, it is necessary to determine the ideal plant population, as well as the amount and duration of released nutrients. This study aimed to assess the decomposition and nitrogen (N), phosphorus (P) and potassium (K) release rates of vetiver grass mulch. A split-plot arrangement was used, with the plots consisting of mulch decomposition times after cutting (0, 15, 25, 70 and 125 days) and the subplots of vetiver plant densities (1, 2, 3 and 4 plants m-2). A randomized block design was used, with four replications. The highest release rates for N, P and K were recorded during the first five days. The plant density of 3 plants m-2 exhibited the highest mulch dry weight at 125 days and contained more N, P and K, when compared to the populations of 1, 2 and 4 plants m-2.


2018 ◽  
Vol 8 (2) ◽  
pp. 659-666
Author(s):  
Ellisa Rusiani ◽  
Mahdiannoor Mahdiannoor ◽  
Farida Adriani

       Peanuts is a herbs plants, its flowers like a butterfly and its pods at the underground. Production decrease of peanuts at the Hulu Sungai Utara Regency because chemical fertilizers are used excessively. It causes the soil isn’t loose, hard, and sour. Liquid organic fertilizer (LOF) of coconut husk and banana trunk have many nutrients like nitrogen, phosphorus, and potassium. This study aims to (i) determine the growth and yield response of peanut to the application liquid organic fertilizer of coconut husk and banana trunk on lebak wetlands, (ii) determine the best dosage liquid organic fertilizer of coconut husk and banana trunk growth and yield of peanut in lebak wetlands. It used a randomized block design (RBD). The results showed that application liquid organic fertilizer of coconut husk and banana trunk had significant effect on plant height and number of leaves age 28 day after planting (DAP) and no effect on plant height and number of leaves age 14 and 21 DAP, age of the plant when the first flowering, number of pods and plant fresh weight of pods. p3 (250 ml) was the best dosage to growth and yield of peanut.


2017 ◽  
Vol 41 (2) ◽  
pp. 117-127 ◽  
Author(s):  
Thais Ramos da Silva ◽  
Jairo Osvaldo Cazetta ◽  
Samira Domingues Carlin ◽  
Bruna Robiati Telles

ABSTRACT Although there are evidences that the proper supply of mineral nutrients to plants relieves water stress, little is known on the approach of how the drought affects the absorption and accumulation of nutrients by distinct sugar cane genotypes, or in different parts of a same plant. Thus, the objective of this study was to determine the content and accumulation of N, P and K in the aerial part of plant from three genotypes of sugar cane, submitted to three water potentials in the soil, and check the relationship of these variables with the tolerance of plants to prolonged drought. In order to access this objective, an experiment under greenhouse conditions, comprised by a fatorial 3 × 3, in a randomized block design, and four replicates was carried out. After 90 days from treatment imposition, the plant transpiration rate, plant dry mass, concentration of N, P and K were determined in leaves and culms, as well as in total plant shoot were measured. It was found that tolerance to drought in sugar cane is related to higher levels of N and K in the leaves and stems, and larger accumulations of K and P in the plant shoot. There is high positive correlations among accumulation of N, P and K in the plant shoot and dry matter production by plants submitted to drought. There are intermediate correlations among plant transpiration and nutrient uptake by plants under drought. Plants of the genotype SP81-3250 are more tolerante to prolonged drought, than the RB855453 and IACSP95-5000 plants.


2019 ◽  
Vol 11 (9) ◽  
pp. 120
Author(s):  
Cecília L. P. Resende ◽  
Leandro F. Damaso ◽  
Mylla C. R. Ávila ◽  
Daniel D. C. Carvalho ◽  
Patrícia G. S. Melo ◽  
...  

The efficiency and responsiveness agronomic to the main macronutrients is becoming increasingly important due to the risk of supply, since it is a finite resource. In addition, excess fertilizer decreases the quality of water and air. Thus, the objective of this work was to assess the corn hybrids in terms of their efficiency and responsiveness to nitrogen (N), phosphorus (P) and potassium (K), and identify the ones most suitable for fresh consumption, according to the product type and technological level to be adopted by the farmer. The randomized complete block design in a 10 × 3 (hybrids and doses) factorial scheme was adopted for the experiment, with three replications, for two season crops (2013/14 and 2014/15). Ten hybrids (2B512PW, 2B587PW, 2B707PW, 30F35HR, 30F53YH, AG1051, BRS1055, BM3061, P3646H e P3862YH) were used in isolation under low availability (without application) and partial, of N, P and K, in an isolated manner, also evaluated under the recommended dose, aiming at fresh consumption. The most efficient and responsive hybrid must first be identified in isolation, based on the availability it is subjected to and later, by its sale, focused on fresh consumption. The hybrids indicated for low availability (low technological level) were BRS1055 and 30F53YH, with respect to responsiveness or agronomic efficiency, the hybrid P3862YH was the one that presented the best performance and indicated for technological levels of medium to high, considering the classification obtained for the nitrogen, phosphorus, and potassium for production vegetable corn.


The study was conducted in the nursery of Hort. Dept., College of Agriculture and Forestry, Mosul University, Iraq, during 2018 season to study the response of budded "Zaghinia" apricot on seedlings rootstock to bio, organic and chemical fertilizers, and their effects on seedling growth. The studied factors were as follows: Bio fertilizer Fulzyme (0,1and 2 g. seedling-1 ), organic fertilizer (Rice residue) (0, 1 and 2 kg. seedling-1 ) and DAP fertilizers (0, 5 and 10 g. seedling-1 ). The study was performed by using split-split plots within factorial experiment in randomized complete block design (RCBD), with 3 factors and 3 replicates, by using 6 seedlings for each treatment. Treatment means were compared by using Duncan multiple levels at 5% p. the most important results obtained were as follows: 1 and 2 gm.seedling-1 of bio fertilizer (Fulzyme) and Chemical fertilizer (DAP) at the levels 5 and 10 g. seedling-1 affected significantly resulted in a significant increase in soil available nitrogen, while the addition of organic fertilizer (rice residues) and for both levels 1 and 2 kg. Seedling-1 gave a significant increase in nitrogen, phosphorus, ready-made potassium and pH of the seedling soil, and the bilateral interaction had a significant role in the growth of seedlings, especially the treatment of the interaction between the fertilizer (Fulzym) and organic fertilizer (Rice residues), which have a significant effect in giving the best results in available nitrogen, phosphorus and potassium in the soil, and the triple interference also gave a significant increase in all studied traits.


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