Biomass flow and water efficiency of cactus pear under different managements in the Brazilian Semiarid

Lopes, Marcos Neves; Cândido, Magno José Duarte; Gomes, Ellen da Costa; Pompeu, Roberto Cláudio Fernandes Franco; Silva, Rodrigo Gregório da

doi:10.5935/1806-6690.20180037

Cited by 5 publications

(6 citation statements)

References 2 publications

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“…Another fact that may have contributed to this result is the adaptability of the cactus pear. Lopes et al (2018) pointed out that the cactus pear performs well in dry regions of the world because it has biochemical, anatomical, morphological, and physiological characteristics adapted to the climatic rigours of these regions. It is a crop with high productive potential in these regions, in addition to high tolerance to arid and semi-arid conditions, as it has photosynthesis of the CAM type and high efficiency in the use of water (Silva et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Efficiency of fertilization with coated urea in the cultivation of cactus pear under rainfed conditions in Brazilian savannah

et al. 2021

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Cactus pear is an important species for animal feeding in the regions of dry climate. There is no information on the fertilization with coated urea in the cultivation of cactus pear under rainfed conditions in the savannah region. The aim of the current study was to evaluate the forage potential of Nopalea cochenillifera variety Doce in yellow latosol under rainfed conditions in the Brazilian savannah, comparing the fertilization with urea and coated urea in different levels. A randomized block design was adopted, in a 2 × 4 × 2 factorial scheme, with the factors corresponding to two sources of nitrogen (urea and urea coated with polymers, N+), four levels of nitrogen (0, 60, 120 and 240 kg/ha/year) and two harvests (year I and year II). The plants were evaluated after 1 year of growth, in each year of evaluation, regarding the characteristics of growth, production, chemical and mineral composition and nutritional value. The level of 240 kg/ha provided higher emission of cladodes per plant (17.33 and 18.17), respectively, for N+ and urea. The highest nitrogen use efficiency was found in the level of 60 kg N/ha (142 kg/ha/year). NFC values were 3.5 g/kg dry matter (DM) higher when the cactus pear was fertilized with urea in year I and 5.4 g/kg DM in year II. The use of conventional urea promoted better results of agronomic and nutritional characteristics of the cactus pear, under rainfed regime, when compared to the use of urea coated with polymers.

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Section: Discussionmentioning

confidence: 99%

Efficiency of fertilization with coated urea in the cultivation of cactus pear under rainfed conditions in Brazilian savannah

et al. 2021

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“…The estimations indicated that the balanced fertilization of N and P resulted in values of FDR higher than 2.5, allowing to infer that the balanced management of nutrient availability favored the good functioning of the photosynthetic process. The improvement observed in FDR might favor growth through gains in biomass flow (Lopes et al, 2018a), reflecting positively on cactus pear productivity (Dubeux Jr. et al, 2006), responding through the beneficial action of N on assimilation in CAM plants (Nobel and De la Barrera, 2002). As N and P combinations favored vitality indices (FDR) in the cactus pear crop, depending on the environmental conditions, the evaluated seasons (dry and rainy) and the parts of the plant under analysis, it can be inferred that the conversion of radiant energy into chemical energy and its use in the biochemical phase of the photosynthesis were more efficient, which will positively influence the photosynthetic process, with an increase in the net photosynthesis rate of the crop.…”

Section: Electron Transport Rate (Etr) and Fluorescence Decrease Ratio (Fdr)mentioning

confidence: 99%

“…Cactus pear belongs to the group of crassulacean acid metabolism (CAM) plants (Ranson and Thomas, 1960). This is an important mechanism for the adaptation of these plants to arid and semi-arid regions, associated with the features of stomatal diurnal closure and nocturnal opening, which minimizes water losses (Nobel, 2002) and confers high efficiency in the use of water (Silva et al, 2014;Lopes et al, 2018a;Souza et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Fertilization with nitrogen and phosphorus has shown effects on biomass flow and accumulation, water use efficiency (Lopes et al, 2018a), and productivity of cactus pear (Dubeux Jr. et al, 2006), as well as the proven influence on the accumulation and export of nutrients in forage biomass (Lopes et al, 2018b). Moreover, the positive effect of nitrogen is highlighted on gas exchanges, with increments in the photosynthetic rate (Pompeu et al, 2010;Lopes et al, 2011a;Silva et al, 2016) and elevation of growth rates, biomass flow, and productivity of different forage plants (Lopes et al, 2011b,c;Lopes et al, 2013), besides the positive relationship of N with the assimilation of CO 2 in hemiepiphytic cactus (Nobel and De la Barrera, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Photochemical activity modulated by water, nitrogen, and phosphorus status in cactus pear

Lopes¹,

Gomes²,

Maranhão³

et al. 2021

Revista Brasileira De Zootecnia

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This study aimed to evaluate the effects of nitrogen (N) and phosphorus (P) associated with dry and rainy seasons on the photochemical activity of Opuntia ficus-indica (L.) Mill. cv. Gigante. Combinations of N (10.0, 70.0, 100.0, 130.0, and 190.0 kg ha −1 yr −1 ) and P 2 O 5 (10.0, 70.0, 100.0, 130.0, and 190.0 kg ha −1 yr −1 ) were evaluated in the dry and rainy seasons in semi-arid regions. A completely randomized block design with split-plot arrangement was adopted with four replications. In Quixadá, the maximum potential quantum efficiency of photosystem II (Fv/Fm) was 0.82, observed in third-order cladodes (rainy season and N/P 75.6/10.0 kg ha −1 yr −1 ), while in Tejuçuoca, the maximum Fv/Fm was 0.81, found in 2nd/3rd order cladodes (rainy season and N/P 10.0/190.0 kg ha −1 yr −1 ). In Quixadá, the maximum electron transport rate (ETR) was 31.6 μmol m −2 s −1 in 2nd/3rd order cladodes (rainy season and N/P 10.0/190.0 kg ha −1 yr −1 ), and in Tejuçuoca, the maximum ETR was 24.1 μmol m −2 s −1 , in second-order cladodes (rainy season and N/P 110.1/10.0 kg ha −1 yr −1 ). In Quixadá and Tejuçuoca, higher values of Fv/Fm and ETR were observed in the rainy season. In Quixadá, the maximum fluorescence decrease ratio (FDR) was 4.04 in third-order cladodes (rainy season and N/P 10.0/114.8 kg ha −1 yr −1 ), while in Tejuçuoca, the maximum FDR was 6.93, found in 2nd/3rd order cladodes (rainy season and N/P 190.0/10.0 kg ha −1 yr −1 ). In Quixadá and Tejuçuoca, there was predominance of higher FDR values in the rainy season. Nitrogen, phosphorus, and water status modulate the photochemical efficiency of cladodes of cactus pear cv. Gigante in semi-arid regions.

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“…A matter of concern for livestock exploitation in tropical regions is producing forage in rainfed conditions. The constant periods of drought, associated with successive years of low rainfall, change forage yield and quality, constituting a serious problem for producers (Lopes et al, 2018). On this basis, research is being conducted to assess the adaptability and production capacity of different forage species and cultivars to Forage Accumulation and Nutritional Characteristics of Brachiaria Cultivars Grown in a Semi-arid Environment identify resistant and productive crops to improve production indices in the semi-arid region (Lima et al, 2017;Fernandes et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Forage Accumulation and Nutritional Characteristics of Brachiaria Cultivars Grown in a Semi-arid Environment

Rodrigues

Difante

Ítavo

et al. 2023

Trop. Anim. Sci. J.

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Biomass flow and water efficiency of cactus pear under different managements in the Brazilian Semiarid

Cited by 5 publications

References 2 publications

Efficiency of fertilization with coated urea in the cultivation of cactus pear under rainfed conditions in Brazilian savannah

Efficiency of fertilization with coated urea in the cultivation of cactus pear under rainfed conditions in Brazilian savannah

Photochemical activity modulated by water, nitrogen, and phosphorus status in cactus pear

Forage Accumulation and Nutritional Characteristics of Brachiaria Cultivars Grown in a Semi-arid Environment

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