scholarly journals Effect of Nitrogen and Potassium Rates on Early Development of Macaw Palm

2015 ◽  
Vol 39 (6) ◽  
pp. 1671-1680 ◽  
Author(s):  
Leonardo Duarte Pimentel ◽  
Claudio Horst Bruckner ◽  
Hermínia Emília Prieto Martinez ◽  
Sérgio Yoshimitsu Motoike ◽  
Candida Elisa Manfio ◽  
...  
Keyword(s):  
Block Design ◽  
Nutrient Use Efficiency ◽  
Fertilization Rate ◽  
Vegetative Development ◽  
Nutrient Contents ◽  
Economic Exploitation ◽  
Randomized Block Design ◽  
Nutrient Use ◽  
Leaf Tissues ◽  
Macaw Palm

ABSTRACT The economic exploitation of macaw palm [Acrocomia aculeate(Jacq.) Lodd. ex Mart.] is currently in transition, from extractivism to agricultural cultivation, thus requiring studies on the fertilization of the crop. This study evaluated the response of three genotypes of macaw palm to increasing rates of nitrogen and potassium, grown in the field until the 2nd year and to establish reference contents of mineral nutrients in the leaf. The experiment was a split-plot randomized block design with five main treatments (N and K rates) and three secondary treatments (genotypes), with three replications, each plot containing three plants. Plant height, leaf number, vigor, and nutrient contents in leaf tissues were evaluated at the end of 2nd year of cultivation. Differential responses were observed among genotypes, indicating that some genotypes are more efficient in the use of mineral inputs. There was a differentiated and positive response to increasing side-dressed N and K rates in the vegetative development of macaw genotypes until the 2nd year of field cultivation, indicating variability in the species in terms of nutrient use efficiency. The N and K fertilization rate corresponding to 360 g N + 480 g K2O per plant, in four split applications over the two years of cultivation, was insufficient to induce maximum vegetative development in the three macaw genotypes. There was no variation in macro- and micronutrient contents in leaf dry matter of the three macaw genotypes.

scholarly journals PERIODICITY OF EXPOSURE OF HYDROPONIC LETTUCE PLANTS TO NUTRIENT SOLUTION1

2020 ◽  
Vol 33 (1) ◽  
pp. 81-89
Author(s):  
CLEITON DALASTRA ◽  
MARCELO CARVALHO MINHOTO TEIXEIRA FILHO ◽  
PABLO FORLAN VARGAS
Keyword(s):  
Nutrient Solution ◽  
Block Design ◽  
Nutrient Use Efficiency ◽  
Production Costs ◽  
Fresh Weight ◽  
Solution Flow ◽  
Nutrient Contents ◽  
Randomized Block Design ◽  
Nutrient Use ◽  
Leaf Accumulation

ABSTRACT A balanced periodicity of the nutrient solution flow is essential for better agronomic performances and low production costs in hydroponic systems. Thus, the objective of this work was to evaluate the effect of periodicity of exposure of lettuce plants to the nutrient solution in an NFT hydroponic system on the production, nutrition, and profitability of this crop. The experiment was conducted in a randomized block design with five replications. The treatments consisted of four periodicities of exposure of lettuce plants to the nutrient solution, consisting of intervals of 60, 30, and 15 minutes between pumping periods of 15 minutes; and uninterrupted flow of the nutrient solution. The plants were harvested at 30 days after transplanting, and 15 lettuce plants of each experimental plot were used to determine total fresh weight; root fresh weight; shoot freshweight; and contents of N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, and Zn in shoots, roots, and in the diagnostic leaf; accumulation of these nutrients in shoots and roots; and nitrate and ammonium contents in plant shoot. The highest production and profitability of lettuce were found using uninterrupted nutrient solution flow, which provided higher shoot and root nutrient contents to plants, and resulted in a better nutrient use efficiency.

scholarly journals Balanced Fertilization for Improved Nutrient use Efficiency and Mulberry Productivity

2021 ◽  
pp. 205-217
Author(s):  
Mahesh Rajendran ◽  
Melissa Lalremruati ◽  
Soumen Chattopadhay ◽  
Sivaprasad Vankadara
Keyword(s):  
Zinc Sulphate ◽  
Block Design ◽  
Nutrient Use Efficiency ◽  
Total Soluble Protein ◽  
Leaf Quality ◽  
Balanced Fertilization ◽  
Randomized Block Design ◽  
Nutrient Use ◽  
Leaf Yield ◽  
Use Efficiency

Aim: To study the effects of balanced fertilization in improving leaf yield, quality and nutrient use efficiency in mulberry. Study Design: Experiment was conducted in randomized block design (RBD) consisting of 7 treatments in 3 replications. Place and Duration of Study: The present study was conducted at Central Sericultural Research and Training Institute, Berhampore ((Latitude 24º05ʹN & Longitude 88º15ʹE; 18 m > MSL), West Bengal, India in two seasons during 2018 (July-August; September-October). Methodology: Existing S-1635 mulberry plantation (10year-old; 60 cm × 60 cm spacing; net plot area: 32 m2) was utilized. Experiments were conducted in two seasons (July-August, 2018; September-October, 2018) in randomized block design (RBD) consisting of 7 treatments in 3 replications. The treatments in this study included, T1: 100% N-P2O5-K2O+S+Zn with Urea-SSP-10:26:26 + Bentonite Sulphur (8 kg ha-1) + Zinc Sulphate (1 kg ha-1) as BF; T2: 75% BF; T3: 100% N-P2O5-K2O alone (Urea-SSP-10:26:26); T4: 75% N-P2O5-K2O alone (Urea-SSP-10:26:26); T5: 100% N-P2O5-K2O alone (Urea-DAP-MOP); T6: 100% N-P2O5-K2O alone (Urea-SSP-MOP) as farmers′ practice (FP); T7: Nutrients omission plot (Control). The recommended fertilizer dose (100%) for irrigated mulberry production in the Eastern region is N-P2O5-K2O=67-36-22 kg ha-1 crop-1. All the fertilizers were applied in two equal splits on 15th and 30th day after pruning. Results: This study reveals the importance of balanced fertilization of mulberry with N, P, K, S and Zn for sustainable productivity, which is reflected by the maximum values for leaf yield attributes, chlorophyll content and leaf yield. Further, mulberry leaf quality (in terms of total soluble protein and total soluble sugar) significantly improved with balanced fertilization. Higher PFP and AUE were also recorded with fertilization with compound/complex fertilizers than with straight fertilizers; but the balanced fertilization exhibited remarkable enhancement. Conclusion: The results prove that balanced fertilization of N-P2O5-K2O @ 67-36-22 kg ha-1 (Urea-SSP-10:26:26) with Bentonite sulphur (8 kg ha-1) and zinc sulphate (1 kg ha-1) were effective in improving mulberry productivity through enhanced nutrient use efficiency. This could be useful for realizing maximum productivity in mulberry as an efficient nutrient management strategy in mulberry cultivation.

Nutrients demand of cactus forage

2019 ◽  
Author(s):  
João Macedo Moreira ◽  
Aldrin Martin Pérez-Marin ◽  
Jucilene Silva Araújo ◽  
George Rodrigues Lambais ◽  
Aldo Sales
Keyword(s):  
Block Design ◽  
Nutrient Utilization ◽  
Nutrient Recovery ◽  
Fertilizer Treatment ◽  
Treatment Control ◽  
Mineral Fertilization ◽  
Randomized Block Design ◽  
Nutrient Use ◽  
Different Types ◽  
Semi Arid Region

The study aimed to evaluate the efficiency of nutrient use in three cactus forage (CF) cultivars (Opuntia stricta and Nopalea cochenillifera), 365 days after planting under different types of fertilizer in two research sites (Condado and Riachão) of the semi-arid region of Paraiba state, Brazil. The experimental design was a randomized block design with treatments in a factorial scheme (3×4), three cultivars of CF (Orelha de elefante Mexicana; Miúda; Bahiana), and four fertilizer treatment (Control; Manure; Manure with Nitrogen; Mineral fertilization) with four replications. The CF cultivars did not differ significantly in nutrient use. That means of physiological efficiency by CF cultivars were 1.62, and 2.36 kg of biomass per kg of nutrient applied in Condado and Riachão, respectively. The efficiency of nutrient recovery was 16% for the Condado, according the following order: K> P> Ca> N> C = Mg and 12% for Riachão: K> P> N> C = Ca = Mg. In the two research sites, the treatment with mineral fertilization significantly increased the efficiency use of N, P and K in comparison to the other treatments. The average for efficiency of nutrient utilization was 25% and 19% for Condado and Riachão, respectively, in the following order for Condado: K> P> N> Ca = Mg> C, and Riachão: K> P> N> C> Mg = Ca. In a CF production system aiming to obtain a yearly harvest cycle, it is necessary to replenish of K and P to maintain the nutritional balance between the soil and CF plant.

Stem Cold Hardiness, Leaf Heat Tolerance, Growth, and Performance of Six Japanese Maples (Acer palmatum) in Northern Illinois

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 512e-512
Author(s):  
A.M. Shirazi
Keyword(s):  
Water Content ◽  
Heat Tolerance ◽  
Cold Hardiness ◽  
Block Design ◽  
Leaf Tissue ◽  
Ion Leakage ◽  
Randomized Block Design ◽  
Leaf Tissues ◽  
Artificial Freezing ◽  
And Performance

Six different Japanese Maples (Acer palmatum) cultivars `Water Fall', `Burgundy Lace', `Crimson Queen', `Oshio-Beni', `SangoKaKu', and `Bloodgood' from Monrovia Nursery were planted in a randomized block design on 4 June 1997 at the The Morton Arboretum. Leaf heat tolerance was evaluated by measuring ion leakage of the leaf tissue at 25–60 °C in July, Aug., and Sept. 1997. The LT50 (the temperature at which 50% of the tissues were injured) of all the cultivars were higher in July (≈53 °C) and were lower in September (≈47 °C). Water content of the leaf tissues were higher in July compare to August and September and were not related to heat tolerance of most cultivars. Stem cold hardiness was performed by artificial freezing tests in Oct., Dec., and Feb. 1997/98. The Lowest Survival Temperature (LST) for the most hardy to least hardy cultivars in October and December were: `Burgundy Lace' (–15, –27 °C), `Bloodgood' (–18, –24 °C), `Oshio-Beni' (–15, –24 °C), `Crimson Queen' (–15, –18 °C), `Water Fall' (–9, –18 °C) and `SangoKaKu' (–9, –12 °C), respectively. Growth, dormancy development, spring budbreak and performance of these cultivars will be compared.

scholarly journals Fertilization and Shading Trials to Promote Pinus nigra Seedlings’ Nursery Growth under the Climate Change Demands

2021 ◽  
Vol 13 (6) ◽  
pp. 3563
Author(s):  
Marianthi Tsakaldimi ◽  
Panagiota Giannaki ◽  
Vladan Ivetić ◽  
Nikoleta Kapsali ◽  
Petros Ganatsas
Keyword(s):  
Tree Species ◽  
Block Design ◽  
Pinus Nigra ◽  
Fertilization Rate ◽  
Early Growth ◽  
Climate Scenarios ◽  
Northern Greece ◽  
Randomized Block Design ◽  
Below Ground ◽  
High Fertilization

Pinus nigra is one of the most widely used tree species for reforestation within its geographical distribution, as well as being a potential substitute for other tree species in Central Europe under future climate scenarios. P. nigra is transplanted into the field as two-year or three-year old seedlings because of its relatively low growth rate in the nursery. This study investigated the effects of fertilization programs and shading on P. nigra seedlings, aiming to accelerate early growth, and thus to reduce the nursery rearing time. The experiment (a completely randomized block design) was conducted in an open-air nursery by sowing seeds from Grevena, Northern Greece, in Quick pots filled with peat and perlite in a 2:1 ratio. The seedlings were subjected to two levels of fertilization—5 and 10 g L−1 NPK (30-10-10)—and two shading levels: 50% and 70%. At the ends of the first and second nursery growing season, we recorded the seedlings’ above- and below-ground morphology and biomass data. The results show that the application of all of the treatments produced seedlings which met the targeted quality standards for outplanting. However, the combination of a high fertilization rate and low shading level resulted in seedlings of a higher morphological quality, which is often considered to be an indicator for a successful seedling establishment in the field.

scholarly journals Dry matter production and nutrient accumulation after successive crops of lettuce, tomato, rice, and andropogongrass in a substrate with zeolite

2010 ◽  
Vol 34 (2) ◽  
pp. 435-442 ◽  
Author(s):  
Alberto C. de Campos Bernardi ◽  
Marisa Bezerra de Mello Monte ◽  
Paulo Renato Perdigão Paiva ◽  
Carlos Guarino Werneck ◽  
Patrick Gesualdi Haim ◽  
...  
Keyword(s):  
Dry Matter ◽  
Slow Release ◽  
Block Design ◽  
Dry Matter Production ◽  
Natural Occurrence ◽  
Nutrient Source ◽  
Nutrient Contents ◽  
Randomized Block Design ◽  
Matter Production ◽  
Four Levels

Zeolites are hydrated crystalline aluminosilicate minerals of natural occurrence, structured in rigid third dimension net that can be used as slow release plant-nutrient source. The main objective of this study was to evaluate the effects of plant growth substrate under zeolite application, enriched with N, P and K, on dry matter yield and on nutrient contents in consecutive crops of lettuce, tomato, rice, and andropogon grass. The experiment was carried out in a greenhouse, with 3 kg pots with an inert substrate, evaluated in a randomized block design with three replications. Treatments consisted of four types of enrichment of concentrated natural zeolite: concentrated zeolite (Z) only, zeolite + KNO3 (ZNK), zeolite + K2HPO4 (ZPK) and zeolite + H3PO4 + apatite (ZP), and a control grown in substrate fertilized with a zeolite-free nutrient solution. Four levels of enriched zeolite were tested: 20, 40, 80, and 160 g/pot. Four successive crops were grown on the same substrate in each pot: lettuce, tomato, rice, and andropogon grass. Results indicated that N, P and K enriched zeolite was an adequate slow-release nutrient source for plants. The total dry matter production of above-ground biomass of four successive crops followed a descending order: ZP > ZPK > ZNK > Z.

scholarly journals Variations in biomass, nutrient contents and nutrient use efficiency among Chinese fir provenances

2011 ◽  
Vol 60 (1-6) ◽  
pp. 95-105 ◽  
Author(s):  
Pengfei Wu ◽  
Mulualem Tigabu ◽  
Xiangqing Ma ◽  
Per Christer Odén ◽  
Youlan He ◽  
...  
Keyword(s):  
Southern China ◽  
Nutrient Use Efficiency ◽  
Nutrient Content ◽  
Chinese Fir ◽  
Total Biomass ◽  
Improvement Program ◽  
Nutrient Contents ◽  
Nutrient Use ◽  
Use Efficiency ◽  
Phosphorus And Potassium

Abstract A provenance trial involving 16 Chinese fir provenances was established in southern China in 1979, and biomass, nutrient content and nutrient use efficiency were assessed at the age of 23. One-way analysis of variance revealed significant inter-provenance variation (p<0.0001) in measured variables. The mean total biomass ranged from 98.8±5.3 to 163.3±4.2 t ha−1, and the stemwood accounted for 47–65% of the total biomass, followed by roots (11–24%), stembark (7.4–13.7%), and needles and branches (< 10 %). Much of the nitrogen, phosphorus and potassium were stored in the needles, although the concentration varies among provenances. Whole-tree nutrient use efficiency varied from 115.4±2.1 to 180.2±1.02 g g−1, while efficiency in stemwood production ranged from 53.9±3.1 to 106.3±1.1 g g−1. Provenances did not display consistent variation in all measured variables, suggesting the need for multiple criteria for selection in future tree improvement program. In conclusion, the study reveals the existence of considerable variation in biomass production and nutrient use efficiency among Chinese fir provenances that can be exploited for selecting desirable genotypes for enhancing productivity of Chinese fir plantations.

scholarly journals Effect of magnesium fertilization on yield and nutrient status of rice in kole lands

2021 ◽  
Vol 58 (4) ◽  
pp. 525-529
Author(s):  
Latha A ◽  
Chijina K ◽  
Asha V Pillai
Keyword(s):  
Field Experiments ◽  
Block Design ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Plant Nutrient ◽  
Yield Attributes ◽  
Nutrient Contents ◽  
Pooled Data ◽  
Randomized Block Design

The field experiments were conducted in farmer's field at five locations each of kole lands to study the effect of Magnesium (Mg) on yield and soil and plant nutrient status of rice during 2012-2013 and 2013-2014. The experiment was laid out in randomized block design with three replications. The treatments comprised of different levels of Mg viz; 40, 60, 80, 100, and 120 kg Magnesium sulphate(MgSO4)/ha along with control. Observations on growth characters yield attributes, yield and soil and plant nutrient status were recorded. The results revealed that application of 100 kg MgSO4 / ha recorded the maximum number of panicles/m2 (419.13), number of grains/panicle (109.36), thousand grain weight (28.78 g), grain (9.27 t/ha) and straw yield (9.04 t/ha) of rice. The results of pooled data on plant and soil nutrient status revealed that application of magnesium had a positive effect on nutrient content and availability of nutrients in soil. A significant positive correlation was also noticed between Mg application, yield attributes, yield and nutrient contents. The study concluded that application of 100 kg MgSO4 / ha was found to be optimum for correcting the deficiency in Mg deficient areas of kole lands under below sea level farming.

scholarly journals Growth, Yield and Nutrient Uptake Capacity of Rice under Different Sulphur Levels

2016 ◽  
Vol 4 (7) ◽  
pp. 557 ◽  
Author(s):  
A. K. M. Sajjadul Islam ◽  
Md. Shohel Rana ◽  
Dr. Md. Mazibur Rahman ◽  
Md. Jainul Abedin Mian ◽  
Md. Mezanur Rahman ◽  
...  
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Rice Variety ◽  
Nutrient Use Efficiency ◽  
Growth Yield ◽  
Growth And Yield ◽  
Control Treatment ◽  
Yield Attributes ◽  
Nutrient Use ◽  
S Deficiency

Because of using sulphur free fertilizer, rice crop facing tremendous sulphur (S) deficiency throughout the world as well as in Bangladesh. However, farmers of Bangladesh often overlook the importance of sulphur fertilization on rice yield. Therefore, the present study was conducted to investigate the influence of different levels of sulphur on growth, yield attributes and uptake of N, P, K and S by grain and straw of BRRI dhan41 rice variety. The experiment was laid out in randomized complete block design with three replication and eight treatments including control. The result of the study revealed that the highest plant height, panicle length, filled grain was found in T1 (50% RFD of S) treatment, while the utmost number of effective tiller and straw yield was recorded in T5 (150% RFD of S) treatment. Interestingly, maximum grain yield as well as uptake of N, P, K and S by grain and straw was significantly higher in T6 (175% RFD of S) treatment. The highest grain yield of T6 treatment might be due to maximum nutrient use efficiency. However, in all cases control treatment (T0) gave the worst result. The present study clearly indicates that higher rates (175% of the recommended dose) of S along with other fertilizers may be recommended for better growth and yield of BRRI dhan41 in Bangladesh soil.

Maximization of Nutrient use Efficiency and Yield through Application of Biofertilizers in Field Pea (Pisum sativum L.)

2021 ◽  
Author(s):  
R.K. Singh ◽  
S.R.K. Singh ◽  
Narendra Kumar ◽  
A.K. Singh
Keyword(s):  
Block Design ◽  
Nutrient Use Efficiency ◽  
Growth Parameter ◽  
Soil Microbiology ◽  
Field Pea ◽  
Phosphate Solubilizing Bacteria ◽  
Chemical Fertilizers ◽  
Combined Application ◽  
Nutrient Use ◽  
Use Efficiency

Background: The negative effects of continuous use of chemical fertilizers on soil microbiology and agricultural sustainability are well established. The chemical fertilizers load in environment can be minimized by combined application of fertilizers and biofertilizers in crops like pulses which require less fertilizer-N and respond well to the use of biofertilizers. The objectives of the study were to see the effect of different biofertilizers in reduction of total fertilizer use and the response of field pea to combined application of chemical- and bio-fertilizers in terms of growth, yield and NUE.Methods: A field experiment was conducted during 2 consecutive rabi season of 2017-18 and 2018-19 at KVK, Chhatarpur, Jabalpur (Madhya Pradesh), India to evaluate the application of fertilizers and biofertilizers on growth parameter, nodulation, nutrient content and uptake, nutrient use efficiency, yield and economics of field pea. The experiment was laid out in randomized block design with five treatments in four replications. Treatments comprised of Control, Recommended dose (RD) of NPK (20: 60: 20 kg N, P2O5 and K2O/ha, respectively) (RDNPK), RDNPK + seed inoculation with Rhizobium @ 20 g/kg seed (RDNPK +R), RDNPK+R+phosphate solubilizing bacteria @ 20 g each/kg seed (RDNPK + R+PSB) and 75% of RDNPK + R+ PSB + potash solubilizing bacteria @ 5 kg/ha (75% RDNPK+ R+PSB+KSB). All other practices followed as per recommendation for the region and different observations and indices were recorded by following standard procedures.Conclusion: The application of 75% RDNPK+R+PSB+KSB was found best treatment among all others which resulted in highest grain yield (1682 kg/ha), protein content (23.1%), protein yield (388.5 kg/ha), net return (Rs. 46 623/ha) and B:C ratio (2.94). The nutrient use efficiency such as Partial Factor Productivity (PFP), Agronomic efficiency (AE), Physiological Efficiency (PE) and Economic Efficiency (EE) were also higher under combined application of fertilizers and biofertilizers. Thus, 75% RDNPK along with combined application of biofertilizers (R+PSB+KSB) may be applied for higher yield and return from field pea.

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