scholarly journals Establishment of Sufficiency Ranges to Determine the Nutritional Status of ‘Gigante’ Forage Cactus Pear—Macronutrients

2019 ◽  
Vol 11 (18) ◽  
pp. 213 ◽  
Author(s):  
Jean F. T. Alves ◽  
Sérgio L. R. Donato ◽  
Paulo E. R. Donato ◽  
João Abel da Silva ◽  
Bruno V. C. Guimarães

Determining the sufficiency range of essential macronutrients in plants is of utmost importance for successfully diagnosing the crop’s nutrient demands, thereby improving fertilizer recommendations. The aim of this study was to establish the macronutrients ranges in the cladodes for the evaluation of the nutritional status of ‘Gigante’ cactus pear. Macronutrients contents of cladodes and dry matter yield in 72 plots were used. The experiment consisted of four cattle manure rates (0, 30, 60, and 90 Mg ha-1 year-1), three spacings (1.00 × 0.50, 2.00 × 0.25, and 3.00 × 1.00 × 0.25 m) and two production cycles, arranged in a 4 × 3 × 2 factorial in randomized blocks, and three replicates. Sufficiency ranges of plots with dry matter ≥ 19.93 Mg ha-1 cycle-1 were determined as well as the mathematical chance for plots with dry matter ≥ 23.75 Mg ha-1 cycle-1 and the critical level. The sufficiency ranges, critical level and mathematical chance are, respectively, for each nutrient in g kg-1: N, 12.7-18.5; 14.4; 15.5-19.7; P, 1.0-1.8; 1.0; 0.4-1.7; K, 31.6-44.1; 31.9; 33.7-39.7; Ca, 23.2-32.8; 24.6; 25.0-29.6; Mg, 9.5-14.3; 10.2; 7.4-14.0; and S, 1.1-2.0; 1,1; 1.0-1.8. The mathematical chance model was adequate for all macronutrients except for P and Mg which showed low sufficiency range values. Sufficiency range and critical level of nutrients are useful for diagnosing macronutrient contents and improving the nutritional status of ‘Gigante’ forage cactus pear.

2019 ◽  
Vol 11 (18) ◽  
pp. 222 ◽  
Author(s):  
Jean F. T. Alves ◽  
Sérgio L. R. Donato ◽  
Paulo E. R. Donato ◽  
João Abel da Silva ◽  
Bruno V. C. Guimarães

Micronutrient sufficiency ranges are of great importance in crop nutritional diagnosing for improved fertilizer recommendations under field conditions. The objective of this paper was establishing the micronutrients ranges in the cladodes for the evaluation of the nutritional status of ‘Gigante’ forage cactus pear. Micronutrients contents in cladodes and dry matter yield of 72 plots were used. The experiment was composed of four cattle manure rates (0, 30, 60, and 90 Mg ha-1 year-1), three spacings (l.00 × 0.50, 2.00 × 0.25, and 3.00 × 1.00 × 0.25 m), and two production cycles, in a 4 × 3 × 2 factorial plan, designed in randomized blocks, with three replicates. Sufficiency ranges of plots with dry matter ≥ 19.93 Mg ha-1 cycle-1 were determined as well as the mathematical chance for plots with dry matter ≥ 23.75 Mg ha-1 cycle-1 and the critical level. The sufficiency range, critical level and mathematical chance are, respectively, for each micronutrient, in mg kg-1: B, 22.3-32.7; 23.7; 20.36-27.94; Cu, 2.0-3.7; 1.6; 1.8-2.8; Fe, 61.1-126.6; 62.0; 35.8-85.3; Mn, 260.0-507.7; 111.0; 54.8-252.2; Zn, 34.5-57.8; 30.3; 19.7-48.5; and, Na, 29.8-56.2; 19.4; 26.6-42.7. For B, Zn, and Na, the sufficiency range, mathematical chance, and the critical level are adequate; for Cu, Fe, and Mn, the critical level and mathematical chance are more adequate for nutritional evaluation of `Gigante` forage cactus pear, associated with dry matter yield ranging from 21.8 to 31.2 Mg ha-1 cycle-1.


2010 ◽  
Vol 39 (9) ◽  
pp. 1883-1888 ◽  
Author(s):  
Adônis Moreira ◽  
Nand Kumar Fageria ◽  
Gilberto Batista de Souza ◽  
Alfredo Ribeiro de Freitas

The objective of this work was to evaluate the effects of cattle manure, reactive natural phosphate and biotite schist on the soil fertility, yield and nutritional status of Megathyrsus spp. cv. Massai. The experiment was conducted under field conditions, in a dystrophic Red Yellow Latosol (Oxisol). It was used a randomized block experimental design with the following treatments: three natural reactive rock phosphate from Algeria (Djebel-Onk) doses (0, 100 and 200 kg ha-1 of P2O5), three biotite schist doses (0, 150 and 300 kg ha-1 of K2O) and three cattle manure doses (0, 20 and 40 t ha-1). The application of natural phosphate increased dry matter yield, however, application of cattle manure and biotite schist did not influence this variable. Foliar levels of nitrogen, potassium and magnesium (cattle manure), phosphorous and boron (natural rock phosphate) and potassium (biotite schist) were influenced by the applied fertilizer doses. Only the levels of phosphorous in the soil and in the plant and levels of magnesium and boron in the plant show interaction with dry matter yield of Massai cultivar.


Author(s):  
Paulo E. R. Donato ◽  
Sérgio L. R. Donato ◽  
João A. Silva ◽  
Aureliano J. V. Pires ◽  
Raul C. C. Rosa ◽  
...  

ABSTRACT The objective of this study was to evaluate the levels of macronutrients in cladodes and yield of cactus pear, cv. ‘Gigante’, cultivated with different cattle manure doses and plant spacings. The experimental design was randomized blocks in 4 x 3 factorial, with three replicates. The treatments consisted of the combination of four doses of cattle manure (0, 30, 60 and 90 Mg ha-1 year-1) with three spacings (1.00 x 0.50, 2.00 x 0.25 and 3.00 x 1.00 x 0.25 m). The contents of macronutrients and dry matter production of cladodes were assessed 600 days after planting. The plant spacings influenced the contents of nitrogen, potassium, calcium and sulfur in the cladodes of ‘Gigante’ cactus pear and there was interaction between spacing and manure dose for magnesium contents. The increment in cattle manure doses increases the contents of phosphorus, nitrogen, potassium and sulfur in the cladodes. The maximum dry matter production of cladodes is estimated at 21.8 Mg ha-1 year-1 at a dose of 71.8 Mg ha-1 year-1 of manure.


Author(s):  
Alex A. Lédo ◽  
Sergio L. R. Donato ◽  
Ignácio Aspiazu ◽  
João A. da Silva ◽  
Paulo E. R. Donato ◽  
...  

ABSTRACT The objective of this study was to evaluate nutrient concentration and nutritional efficiency in ‘Gigante’ cactus pear under different chemical, organic and organomineral fertilizations, planting configurations and spacings, during three production cycles. Seventy two treatments, involving two types of configuration in the plots, three spacings in the subplots and 12 types of fertilization in the sub-subplots were arranged in a split-split-plot scheme, in a randomized block design, with three repetitions. At the time of harvest of each production cycle, 40 cladode tissue samples were collected per treatment to determine dry matter mass and nutrient concentration, which were used to calculate the coefficients of biological utilization of nutrients. Organic fertilization reduces Mn concentrations in cladodes to levels below the sufficiency range. The nutritional efficiency of N, S, P, Mn and Zn is higher with organic and organomineral fertilizations and are associated with higher dry matter yields, whereas K nutritional efficiency is higher with mineral fertilization. The absence of fertilization or application of 30 Mg ha-1 year-1 of bovine manure is insufficient to ensure nutritional status and dry matter yield above 15 Mg ha-1 in ‘Gigante’ cactus pear.


Author(s):  
Paulo E. R. Donato ◽  
Sérgio L. R. Donato ◽  
João A. Silva ◽  
Aureliano J. V. Pires ◽  
Ancilon A. e Silva Junior

ABSTRACT This study aimed to evaluate the extraction/exportation of macronutrients by cladodes of ‘Gigante’ cactos pear, grown under diferente spacings and doses of cattle manure applied to the soil 600 days after planting. Twelve treatments were used, three spacing (1.00 x 0.50; 2.00 x 0.25 and 3.00 x 1.00 x 0.25 m) and four doses of cattle manure (0, 30, 60 and 90 Mg ha-1 year-1), arranged in a 3 x 4 factorial scheme in randomized blocks, with three replicates. The extraction/exportation of N, P, K, S, Ca and Mg was determined, whose respective values for maximum dry matter production (21.8 Mg ha-1), with a cattle manure dose of 71.8 Mg ha-1 year-1 were: 287.9, 46.2, 924.2, 40.7, 609.7 and 249.1 kg ha-1, 600 days after planting. The amounts extracted/exported from N, P, K and Ca varied independently with spacings and manure doses, while Mg and S were dependent on the interaction between factors. The doses of manure are insufficient to meet the demand of extracted/exported K, Ca and Mg. The increments in the doses promote greater nutrient uptake by the plant. The extracted/exported macronutrients in largest amounts are: K, Ca, N, Mg, P and S, in this order.


2016 ◽  
Vol 38 (3) ◽  
Author(s):  
BRUNA PEREIRA DE SOUZA ◽  
ENILSON DE BARROS SILVA ◽  
MARIA DO CÉU MONTEIRO DA CRUZ ◽  
EDSON PERITO AMORIM ◽  
SÉRGIO LUIZ RODRIGUES DONATO

ABSTRACT The knowledge of the requirements and micronutrients efficiency in banana is relevant to the development of fertilizer recommendations. This study aimed to evaluated requirements and nutritional efficiencies of banana seedlings submitted to omission of micronutrients in nutritive solution. Treatments were complete nutritive solution and solution with individual omission of B, Cu, Fe, Mn and Zn, and two Prata-Anã and BRS Platina hybrid genotypes. Leaf area, dry matter of leaves, rhizome, roots and total and micronutrient contents were determined. With results, the following indexes were calculated: uptake, transport and micronutrient utilization efficiency. B deficiency effected more intensely the growth of both banana genotypes. The nutrient uptake corresponded to the following sequence: Fe > Mn > Zn > B > Cu, which reflects the plant requirements. The BRS Platina hybrid showed higher B, Fe and Zn absorption efficiency in relation to Prata Anã cultivar, which had higher Cu absorption efficiency. BRS Platina hybrid showed higher efficiency in the transport of Fe and Mn, while Prata Anã only for Cu. Prata Anã cultivar showed higher micronutrient utilization efficiency in complete treatment and treatment with omission of micronutrients.


2009 ◽  
Vol 57 (2) ◽  
pp. 119-125
Author(s):  
G. Hadi

The dry matter and moisture contents of the aboveground vegetative organs and kernels of four maize hybrids were studied in Martonvásár at five harvest dates, with four replications per hybrid. The dry matter yield per hectare of the kernels and other plant organs were investigated in order to obtain data on the optimum date of harvest for the purposes of biogas and silage production.It was found that the dry mass of the aboveground vegetative organs, both individually and in total, did not increase after silking. During the last third of the ripening period, however, a significant reduction in the dry matter content was sometimes observed as a function of the length of the vegetation period. The data suggest that, with the exception of extreme weather conditions or an extremely long vegetation period, the maximum dry matter yield could be expected to range from 22–42%, depending on the vegetation period of the variety. The harvest date should be chosen to give a kernel moisture content of above 35% for biogas production and below 35% for silage production. In this phenophase most varieties mature when the stalks are still green, so it is unlikely that transport costs can be reduced by waiting for the vegetative mass to dry.


Sign in / Sign up

Export Citation Format

Share Document