scholarly journals Efficiency and response of conilon coffee clones to phosphorus fertilization

Revista CERES ◽  
2013 ◽  
Vol 60 (3) ◽  
pp. 406-411 ◽  
Author(s):  
Lima Deleon Martins ◽  
Marcelo Antonio Tomaz ◽  
José Francisco Teixeira do Amaral ◽  
Scheilla Marina Bragança ◽  
Herminia Emilia Prieto Martinez
Keyword(s):  
Dry Matter ◽  
Phosphorus Content ◽  
Dry Matter Production ◽  
Phosphorus Fertilization ◽  
Randomized Design ◽  
Matter Production ◽  
Phosphate Fertilization ◽  
Coffee Plants ◽  
Low Levels ◽  
Completely Randomized Design

Studies on nutritional efficiency of phosphorus in conilon coffee plants are important tools to unravel the high limitation that natural low levels of this nutrient in soil impose to these species cultivars. Therefore, this study aimed at evaluating the nutritional efficiency and the response to phosphorus of conilon coffee clones. Plants were managed during 150 days in pots containing 10 dm³ of soil, in greenhouse. A factorial scheme 13 x 2 was used, with three replications, being the factors: 13 clones constituting the clonal cultivar "Vitória Incaper 8142" and two levels of phosphate fertilization (0% and 150% of the P2O5 usualy recommended), in a completely randomized design (CRD). The results indicate a differentiated response of dry matter production and of phosphorus content on each level of phosphate fertilization for the conilon coffee clones and that CV-04, CV-05 and CV-08 clones are nutritionally efficient and responsive to the phosphate fertilization.

scholarly journals Biomassa de Plantas Daninhas Emergidas em Solo Solarizado

2020 ◽  
Vol 24 (1) ◽  
pp. 54-58
Author(s):  
Clodoaldo Moreno Paixão ◽  
Carlos Alberto Rezende Conelian ◽  
Joás Dos Santos Soares ◽  
Juliana Maria Defanti Petrazzini ◽  
Valéria Cristina Horbach
Keyword(s):  
Plant Species ◽  
Mass Production ◽  
Dry Matter ◽  
Cyperus Rotundus ◽  
Alternative Methods ◽  
Soil Solarization ◽  
Dry Matter Production ◽  
Randomized Design ◽  
Matter Production ◽  
Completely Randomized Design

O crescimento da agricultura orgânica, associado às mudanças de padrões de consumo e exigência dos consumidores evidencia um aumento da demanda por alimentos livres de resíduos de agrotóxicos e que apresentem menores riscos à saúde e ao meio ambiente. No entanto, por outro lado, a disponibilidade de métodos alternativos ao controle químico de plantas daninhas, entre outros organismos indesejáveis aos cultivos, ainda é um grande desafio. Dessa forma, o objetivo deste trabalho foi avaliar o efeito da solarização sobre o crescimento e desenvolvimento inicial de plantas daninhas, oriundas de propágulos presentes no solo. O experimento foi realizado na Universidade de Cuiabá, entre os dias 18/01/2018 e 22/02/2018. Foi adotado o delineamento inteiramente casualizado com cinco tratamentos e cinco repetições. Os tratamentos testados correspondem a cinco tempos de solarização do solo, sendo esses: testemunha (sem solarização), solarização por 7 dias, 14 dias, 21 dias e 28 dias. Os resultados mostraram que a solarização pode ser aplicada para a supressão de plantas daninhas. Os efeitos são variados e dependem do tempo de solarização e da espécie da planta. A solarização do solo por 14 dias demonstrou redução acima de 90% da produção de massa de matéria seca de Cyperus rotundus e a solarização por 28 dias demonstrou redução de aproximadamente 70% da produção de massa de matéria seca de Chamaesyce hirta. Palavras-chave: Solarização. Cyperus Rotundus. Chamaesyce Hirta. Controle Alternativo.   Abstract The growth of organic agriculture, associated with changes in consumption patterns and consumer’s demand, shows an increase in demand for food free from  residues of pesticides and have lower  risks to health and the environment. But on the other hand, the availability of alternative methods to chemical weed control, and other unwanted organisms to crops, is still a big challenge. Thus, the aim of this study was to evaluate the effect of solarization on growth and early development of weed plants from seedlings in the soil. The experiment was conducted at University of Cuiabá, between 01/18/2018 and 02/22/2018. A completely randomized design was adopted with five treatments and five replications. The treatments correspond to five times of soil solarization, namely : control (no solarization), solarization for 7 days, 14 days, 21 days and 28 days. The results showed that the solarisation can be applied to the weeds removal. The effects are varied and depend on the solarization time and plant species. Soil Solarization for 14 days showed over 90% reduction of mass production Cyperus rotundus dry matter and solarization for 28 days showed a reduction of approximately 70% by weight of dry matter production of Chamaesyce hirta. The effects are varied and depend on the solarization time and plant species. Soil Solarization for 14 days showed over 90% reduction of mass production Cyperus rotundus dry matter and solarization for 28 days showed a reduction of approximately 70% by weight of dry matter production of Chamaesyce hirta. The effects are varied and depend on the solarization time and plant species. Soil Solarization for 14 days showed over 90% reduction of mass production Cyperus rotundus dry matter and solarization for 28 days showed a reduction of approximately 70% by weight of dry matter production of Chamaesyce hirta. Keywords: Solarization. Cyperus Rotundus. Chamaesyce Hirta. Alternative Control

scholarly journals The amazonian capim-açú is less nitrogen dependente than antelope grass to produce leaf dry matter

2021 ◽  
Vol 25 (2) ◽  
pp. 124-131
Author(s):  
Ivo G. R. de Araújo ◽  
Jairo O. Cazetta ◽  
Rosane C. Rodrigues ◽  
Sâmara S. C. Sanchês ◽  
Clésio dos S. Costa ◽  
...  
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Native Grasses ◽  
Randomized Design ◽  
Matter Production ◽  
Completely Randomized Design ◽  
Native Pastures

ABSTRACT The Maranhão floodplain is dominated by native grasses like capim-açú (Paspalum plicatulum, Mich.). Due to scarce information on nutrient demands of native species, farmers are replacing native pastures by exotic and potentially invasive species such as antelope grass (Echinochloa pyramidalis, Lam). The aim of this study was to compare the growth of capim-açú and antelope grass, under varying N and K doses, to better understand the potential of capim-açú to be used as forage. The experiment was carried out in pots, consisting of a 2 × 5 × 2 factorial scheme (2 species × 5 N doses × 2 K doses) with four repetitions, in a completely randomized design. The N doses of 0, 50, 100, 150 and 200 mg dm-3 were combined with 10 and 30 mg dm-3 K2O. The capim-açú produces higher leaf to stem ratio aboveground by using lower nitrogen and potassium doses than antelope grass. Leaf, stalk, and total dry matter production of both studied species do not respond to potassium doses.

scholarly journals PENGARUH DOSIS BOKASHI TERHADAP PERTUMBUHAN DAN PRODUKSI PADA PEMOTONGAN PERTAMA RUMPUT GAJAH MINI (Pennisetum Purpureum cv. Mott)

2021 ◽  
Vol 5 (2) ◽  
pp. 105-113
Author(s):  
Azaria Dhea Gantina ◽  
Farida Fathul ◽  
Liman Liman ◽  
Muhtarudin Muhtarudin
Keyword(s):  
Plant Height ◽  
Dry Matter ◽  
Experimental Treatment ◽  
Pennisetum Purpureum ◽  
Optimum Dose ◽  
Treatment Unit ◽  
Randomized Design ◽  
Matter Production ◽  
Completely Randomized Design ◽  
Dwarf Elephant Grass

This research aims was to determine the effect of bokashi dose on plant height, number of tillers, percentage of stems, fresh production, and dry matter production and also to determine the optimum dose of bokashi to obtain the best results on growth and production at the first harvest of dwarf elephant grass. This research was conducted in March 2020 - July 2020 in Sidodadi Asri village, Jati Agung district, South Lampung regency. This research used a Completely Randomized Design (CRD) with 4 levels of treatment, namely P0 (control); P1 (bokashi dosage 30 tons/ha); P2 (bokashi dosage 40 tons/ha); and P3 (bokashi dosage 50 tons/ha). Each experimental treatment unit has plot measuring 2x2 m2. Each trial unit was repeated 3 times, so there were 12 trial units. The data were analyzed by variations analyzed at 5% and or 1% level, after that it was followed by orthogonal polynomial test. The results showed that the dose of bokashi had a significant effect (P<0,05) on plant height, fresh production, and dry production, but had no significant effect (P>0,05) on number of tillers, and percentage of stems. The effect of bokashi fertilizer on plant height was obtained by using the optimum bokashi dose of 36.73 tons/ha and the equation was = 60,13 + 35,38x - 6.62x2 [0 ; 50 ton/Ha] (P<0,01). The optimum dose was not obtained for the number of tillers, percentage of stems, fresh production, and dry production. Keywords: Plant height, Number of tillers, Percentage of stems, Fresh production, Dry production

scholarly journals Research Concerning Organic Solutions Suitable for Fertilizing Permanent Pasture

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Ioan Gheorghe OROIAN ◽  
Laura PAULETTE ◽  
Ilie COVRIG ◽  
Antonia ODAGIU ◽  
Cristian IEDERAN
Keyword(s):  
Production Function ◽  
Dry Matter ◽  
Phosphorus Content ◽  
Dry Matter Production ◽  
Pasture Production ◽  
Permanent Pasture ◽  
Matter Production ◽  
Low Phosphorus ◽  
Administration Time ◽  
Organic Solutions

The aim of the study was to demonstrate the influence of “Vinassa” use upon dry matter production function of administration time and doses. The experiments were carried on a 13 ha pasture, divided in 13 plots located in the county of Cluj, during two consecutive years: 2008 and 2009. The permanent pasture composition was made of gramineous and perennial leguminous. The application of this organic unconventional fertilizer led to important pasture production gains, when administration dose was up to 5 t/ha in singular application, and over 4 t/ha administration dose, when was applied in combination with P50 or P75. It is recommended that administration of “Vinassa” fertilizer to be performed in spring in dosis of 3 - 5 t/ha, and in mixture with P50 or P75, in order to compensate the low phosphorus content of the fertilizer.

scholarly journals Aluminum toxicity reduces the nutritional efficiency of macronutrients and micronutrients in sugarcane seedlings

2020 ◽  
Vol 44 ◽  
Author(s):  
Carolina Eggers Borges ◽  
Jairo Osvaldo Cazetta ◽  
Francisco Bruno Ferreira de Sousa ◽  
Kamilla Silva Oliveira
Keyword(s):  
Root System ◽  
Aerial Part ◽  
Dry Matter ◽  
Aluminum Toxicity ◽  
Mineral Nutrients ◽  
Nutrient Accumulation ◽  
Randomized Design ◽  
Matter Production ◽  
Use Efficiency ◽  
Completely Randomized Design

ABSTRACT Although the effects of aluminum on the content and accumulation of mineral nutrients in crops have been studied, but nothing is known about its effect on the nutritional efficiency of sugarcane. Therefore, this study aimed to evaluate the effect of aluminum toxicity on nutritional efficiency, nutrient accumulation, and growth of sugarcane seedling. Sugarcane seedlings of the genotype IACSP95-5000, obtained from one-bud mini-cuttings (3 cm), were used in the test. Seedlings were subjected to treatments in a completely randomized design, with eight Al concentrations in the nutrient solution (0, 10, 20, 30, 40, 50, 60, and 70 mg L−1) and three replicates, totaling 24 experimental units. Analyses determined the contents, accumulation, and absorption, transport, and use efficiency of macronutrients, micronutrients, and aluminum, in addition to dry matter production. The results show that Al affected all variables analyzed, with a decrease in the nutritional efficiency of macronutrients and micronutrients and a drastic decrease in the accumulation of macronutrients in the aerial part, which reflected in the decrease in the dry matter of the plants. The root system was the most affected, with a decrease in growth of up to 60%. Aluminum reduced the use efficiency of nutrient in decreasing order: Ca (69%)> N (60%)> K (59%)> Mg (50%)> S (49%)> P (40%). As for micronutrients, the following decreasing order was observed: Fe (73%)> Zn (59%) = Cu (59%)> Mn (25%).

scholarly journals Sorghum yield after liming and combinations of phosphorus sources

2018 ◽  
Vol 22 (4) ◽  
pp. 243-248
Author(s):  
Thiago C. Silveira ◽  
Rodinei F. Pegoraro ◽  
Marcos K. Kondo ◽  
Arley F. Portugal ◽  
Álvaro V. Resende
Keyword(s):  
Dry Matter ◽  
Block Design ◽  
Dry Matter Production ◽  
Single Superphosphate ◽  
Dry Matter Partitioning ◽  
Natural Phosphate ◽  
Randomized Block Design ◽  
Matter Production ◽  
Phosphorus Sources ◽  
Phosphate Fertilization

ABSTRACT Phosphate fertilization has increased sorghum yield, but few studies are available on sorghum production and efficient fertilizer management related to liming and phosphorus (P) sources. This work evaluates production, dry matter partitioning and agronomic efficiency (AEI) in successive sorghum cycles after application of limestone and combinations of phosphorus sources. Two cycles were conducted in sequence in the same experimental field, in a 2 x 6 factorial scheme, corresponding to soil with or without liming and six combinations of P2O5 sources: control (0 kg ha-1 P2O5), 100% Itafós natural phosphate (NP), 75% NP + 25% single superphosphate (SS), 50% NP + 50% SS, 25% NP + 75% SS and 100% SS. Pots with capacity for 8 dm3 were used in a randomized block design with four replicates. The first cycle, conducted in the summer/autumn season, reached the highest dry matter production and P accumulation in treatments with higher SS proportions, leading to higher AEI. Subsequently, in the second cycle, conducted considering only the residual phosphate fertilization of the first cycle, highest dry matter production and AEI were obtained in the treatment with 100% or higher proportions of natural phosphate in the presence of liming, most likely due to the gradual release of P.

scholarly journals Forage production of elephant grass under intermittent stocking

2013 ◽  
Vol 48 (2) ◽  
pp. 234-240 ◽  
Author(s):  
Carla Silva Chaves ◽  
Carlos Augusto de Miranda Gomide ◽  
Karina Guimarães Ribeiro ◽  
Domingos Sávio Campos Paciullo ◽  
Francisco José da Silva Ledo ◽  
...  
Keyword(s):  
Dry Matter ◽  
Accumulation Rate ◽  
Stocking Density ◽  
Rest Period ◽  
Pennisetum Purpureum ◽  
Elephant Grass ◽  
Forage Production ◽  
Randomized Design ◽  
Matter Production ◽  
Completely Randomized Design

The objective of this work was to evaluate the dry matter production of elephant grass (Pennisetum purpureum) genotypes, managed under intermittent stocking. A completely randomized design was used, with two genotypes and three replicates. The treatments consisted of factorial combinations (2x2x2) of genotypes ('BRS Kurumi' and the clone CNPGL 00‑1‑3), two light interception levels (LI) at the onset of grazing (90 and 95%), and two post‑grazing canopy heights (30 and 50 cm). A total of 24 Holstein x Zebu crossbred heifers were used. The stocking density varied in order to finish the grazing periods in two days. The interval between the defoliation, based on 95% LI, resulted in a higher leaf mass per grazing cycle. The post‑grazing height of 30 cm did not affect the number of grazing cycles but provided a greater herbage accumulation rate. The cultivar BRS Kurumi has higher pasture growth, lower rest period, and greater number of grazing cycles, which results in increased forage production in the growing season.

Evaluation of perennial herbaceous legumes with different phosphorus sources and levels in a Brazilian Ultisol

2005 ◽  
Vol 20 (1) ◽  
pp. 56-62 ◽  
Author(s):  
J.A.A. Espindola ◽  
J.G.M. Guerra ◽  
D.L. Almeida ◽  
M.G. Teixeira ◽  
S. Urquiaga
Keyword(s):  
Cover Crops ◽  
Dry Matter ◽  
Soil Layer ◽  
Soil Surface ◽  
Dry Matter Production ◽  
Organic C ◽  
Herbaceous Legumes ◽  
Matter Production ◽  
Phosphorus Sources ◽  
Phosphate Fertilization

AbstractThis study was carried out under field conditions with the aim of evaluating the period of time necessary for soil cover, dry matter production and accumulation of nutrients by perennial herbaceous legumes with different phosphorus sources at different levels. Four legumes were evaluated: calopo (Calopogonium mucunoides Desv.), forage groundnut (Arachis pintoi Krap. & Greg.), siratro (Macroptilium atropurpureum (OC.) Urb.) and tropical kudzu (Pueraria phaseoloides (Roxb.) Benth.). Each of these species received different phosphorus (P) sources and levels: no phosphate fertilization; 44 and 88 kg of P ha−1 applied as rock phosphate; and 44 kg of P ha−1 as triple superphosphate. Calopo, siratro and tropical kudzu completely covered the soil surface 129 days before forage groundnut. Phosphate fertilization did not increase the dry matter production of any species. The legumes forage groundnut, siratro and tropical kudzu showed desirable characteristics that promote their use as cover crops, such as high dry matter production and shoot accumulation of nitrogen (N) and potassium (K). Forage groundnut had the highest proportion of N derived from the atmosphere at the end of the rainy season, while there were no significant differences between the legumes at the end of the dry season. There was an elevation of soil pH and calcium+magnesium (Ca+Mg) contents, associated with a reduction of aluminum (Al) content, in the surface soil layer (0–5 cm) for siratro in relation to groundnut and tropical kudzu. Tropical kudzu promoted higher soil organic C contents when compared to groundnut.

scholarly journals Pengaruh Pupuk Organik Cair NASA terhadap Nitrogen Bintil Akar dan Produksi Macroptilium Atropurpureum

2012 ◽  
Vol 12 (2) ◽  
pp. 20-23
Author(s):  
M. Nur Husin
Keyword(s):  
Experimental Design ◽  
Dry Matter ◽  
Root Nodule ◽  
Animal Nutrition ◽  
Randomized Design ◽  
Matter Production ◽  
Plastic Bag ◽  
Macroptilium Atropurpureum ◽  
Completely Randomized Design ◽  
Banda Aceh

The effect of liquid organic fertilizing NASA on nitrogen root nodule and production of siratro ABSTRACT.  A study was carried out in Experimental Farm and Laboratory for Animal Nutrition of the Faculty of Agriculture in Syiah Kuala University, Darussalam Banda Aceh to know the dose of liquid organic fertilizing (LOF) NASA on nitrogen root nodule and production of Siratro plants. The study use pot (plastic bag) containing 15 kg of soil. The soil type was of kind of Alluvial. Experimental design was of Completely Randomized Design (CRD). Treatment with LOF NASA was of 0.00 cc/l water, 2.50 cc/l water, 5.00 cc/l water, 7.50 cc/l water, and 10 cc/l water. Result showed that a maximum nitrogen root nodule of Siratro 8.54 mg/m2/day and maximum dry matter production of Siratro 2.26 g/m2/day was founded at 10 cc/l water LOF NASA.

Performance of Southern African Digitaria spp. in southern Queensland

1974 ◽  
Vol 14 (67) ◽  
pp. 186 ◽  
Author(s):  
RW Strickland
Keyword(s):  
Dry Matter ◽  
Mineral Content ◽  
Phosphorus Content ◽  
Clay Soil ◽  
Dry Matter Production ◽  
Cool Season ◽  
Rhodes Grass ◽  
Matter Production ◽  
Chloris Gayana

Dry matter production and quality of 45 Digitaria accessions were measured over the period 1964-70. In three experiments at Samford, south-east Queensland, the accessions were fertilized with either 336 or 672 kg ha-1 of N a year and cut four-weekly. Both total and cool season production was measured. Highest annual yields were produced by D. smutsii (40,000 kg ha-1), D. macroglossa (37,000 kg ha-1) and D. decumbens (30,000 kg ha-1). D. decumbens yielded up to 5000 kg ha-1 dry matter between May and September compared with up to 6800 kg ha-1 from D. pentzii, 6700 kg ha-1 from D. macroglossa and 6400 kg ha-1 from D. smutsii. In two other experiments persistence and production of nine accessions were compared with those of Rhodes grass (Chloris gayana) on heavy, gilgaied clay soil at Meandarra, Queensland and with Panicum coloratum var. makarikariense on a shallow, self mulching, sedentary black earth at Southbrook, Queensland. D. decumbens showed the greatest potential for persistence and production at Meandarra and one strain of D. smutsii had the greatest yields at Southbrook. Digestibility and mineral content varied little between species and were generally satisfactory for animal production. Digitaria tended to be higher in phosphorus content than P. coloratum and C. gayana.

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